2014 Flex Workshop Manual

SECTION 501-10: Seating	2014 Flex Workshop Manual
DIAGNOSIS AND TESTING	Procedure revision date: 07/31/2013

Seating

Special Tool(s)
	Flex Probe Kit NUD105-R025D or equivalent
	Test Light SGT27000 or equivalent 250-300 mA incandescent bulb test lamp

Medium Speed Controller Area Network (MS-CAN)

This vehicle utilizes a communication system called a Medium Speed Controller Area Network (MS-CAN). When diagnosing the memory seat or climate controlled seats, use a Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool with the latest software update with the capability of communicating over the MS-CAN bus.

Principles of Operation

Driver and Passenger Power Seats Without Memory

The driver and front passenger power seat uses a 6-way power seat track and 3 electric motors directly controlled by a seat-mounted seat control switch for horizontal (forward/rearward), front height and rear height adjustment. The driver and passenger seats can also be equipped with a power recliner mechanism with power lumbar.

Power Driver Seat With Memory

NOTE: A memory recall can be initiated only if the vehicle is in PARK or NEUTRAL gear and the ignition is not in START. A memory recall in progress is not affected by the ignition being in START or by moving the gearshift lever out of PARK or NEUTRAL.

NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.

The driver power memory seat is controlled by the Driver Seat Module (DSM). The memory seat feature allows the driver to program a personalized seat position that can be recalled using the memory switch or a Remote Keyless Entry (RKE) transmitter. There are 2 memory settings possible. The 2 settings consist of 8 possible directions: the seat can be moved forward or backward and the front and back of the cushion can be moved up and down independently. The backrest of the seat can be moved forward and backward. Adjustable lumbar is not a memory option. The power seat feature operates independent of the ignition position.

The driver seat control switch provides voltage to the DSM when activated. The NEUTRAL position of the driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate circuit from ground to voltage for operating the motors.

As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove voltage from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor.

The DSM communicates DTCs and other information using the MS-CAN communication bus. It should be noted for diagnostics that because MS-CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the MS-CAN bus circuits disconnected or shorted to ground. Refer to Section 418-00 for information concerning MS-CAN bus communication.

For information on programming memory positions or recalling a stored memory position, refer to Memory Position Programming in this section. For information on RKE transmitter programming, refer to Section 501-14B .

The DSM is located under the driver seat. To install a new DSM , refer to Driver Seat Module (DSM) . Programmable Module Installation (PMI) must be carried out when installing a new DSM . Refer to Section 418-01 .

Driver Seat Module (DSM) Hard Stop/Soft Stop

A hard stop occurs when the seat track or backrest (recline) axes physically reach the end of travel. A soft stop occurs when the seat stops before physically reaching the end of travel. The hard stop is set by seat design and cannot be changed or adjusted. The soft stop is set by the DSM . To prevent unnecessary stress on the seat, the DSM sets 2 soft stops for each moving axis of the seat track and backrest. The DSM uses a preset distance from the hard stop to determine where the soft stop occurs. When an axis reaches the hard stop and the switch is held for approximately one second, it then backs up 180 milliseconds and establishes the soft stop for that axis in that direction.

Easy Exit/Easy Entry

The easy entry/exit feature is a function of the DSM . When the ignition key is removed or for vehicles equipped with passive entry/passive start, when the button is pushed to turn the ignition off, the driver seat moves backward a maximum of 51 mm (2 in) or to the soft stop. The DSM receives a key out command over the MS-CAN communication network and powers the driver seat rearward. The DSM will cancel this operation if a valid input command is received from the driver seat control switch, memory SET switch or exterior mirror control switch.

The DSM will record the current seat position before powering the seat for an easy exit function. This recorded position will be used to return the seat to this position on the easy entry operation. During easy entry operation, the seat is returned to the position previous to the easy exit operation when the key is inserted into the ignition lock cylinder or for vehicles equipped with passive entry/passive start, the ignition button is pressed. Easy entry operation will be cancelled if a valid input command is received by the DSM .

The easy entry/exit feature can be enabled/disabled using a scan tool. When enabled, the feature becomes a user accessible item on the message center allowing the user to turn the feature on and off. Refer to the Owner's Literature or Section 413-01 for information on the message center.

Heated Seats — Front

The driver and passenger heated seat control buttons and indicators are located on the touchscreen interface ( FDIM ). The FDIM is mounted directly to the APIM . The heated seat system functions independently of the vehicle's climate control system. Each time the heated seat button is pressed, the APIM sends the request to the FCIM using the I-CAN . The FCIM sends the message to the IPC using the I-CAN . The IPC sends the request message to the BCM over the HS-CAN . Finally, the BCM sends the request to the HVAC module which decreases one setting (the sequence is high, low, off, high, etc.).

When activated, the HVAC module supplies voltage to the selected seat's heater circuit. Each seat's cushion heater mat and backrest heater mat is connected in a series circuit to the HVAC module and powered by the output circuit for that seat. The HVAC module monitors inputs from a temperature sensor located in each seat's cushion heater mat, and maintains seat temperature by cycling the heater circuits on/off. The heated seat remains ON until the heated seat switch button is pressed to cycle the HVAC module OFF or the ignition is set to OFF.

If a fault is detected by the HVAC module, the module stops supplying voltage to that individual left or right seat that the fault was detected on until the ignition is turned OFF and then ON.

Heated Seats — Rear

Vehicles equipped with rear heated seats are equipped with a single-heated seat module to control both rear heated seats. The heated seat module does not time out. The system will function with the ignition in RUN, whether the engine is running or not. The heated seat module supplies voltage to the heater mats and regulates seat temperature by monitoring a thermostat located in the cushion heater mat.

The heated seat buttons are located in the rear panel of the front floor console. When a heated seat button is pressed, a momentary ground is sent to the heated seat module to turn the heated seat on or off. Pressing the high or low button once turns the heated seat on and pressing the same button a second time turns it off. The heated seat module will send voltage to the separate indicator circuit at the heated seat switch to indicate an on state. The heated seat module will remain on until the heated seat switch is pressed for that high or low mode currently on, sending a second momentary ground signal to the heated seat module or the ignition is set to OFF.

When the heated seat module is on, it provides voltage to the separate indicator circuit at the heated seat button to indicate an on state.

The heated seat module does not report DTCs and does not communicate on the CAN . If a fault is detected, the module will disable the affected seat(s) and indicator(s).

After the fault is corrected, the heated seat module needs to be reset by cycling the ignition OFF and then ON. After the heated seat module has been reset, the module will return to an off state.

Climate Controlled Seat System

NOTICE: Avoid applying voltage directly to a Thermo-Electric Device (TED) for testing its operation. Doing so may cause damage to the TED .

NOTE: When installing a new Dual Climate Controlled Seat Module (DCSM), it is necessary to carry out Programmable Module Installation (PMI). Refer to Section 418-01 .

Both the driver and front passenger climate controlled seats are independently controlled by the DCSM . The climate controlled seat system only operates with the engine running above 350 rpm, however, if using a scan tool to command the DCSM , diagnostic testing can be carried out with the ignition on and engine off. The DCSM does not time out. The DCSM receives voltage from the Battery Junction Box (BJB) on 2 redundant circuits. If one pin does not receive voltage, both seats will remain operational because the voltage supply circuits are internally connected in the DCSM .

If a fault occurs setting a DTC, only the affected seat will be disabled by the module. If the system shuts down due to a DTC fault, cycling the ignition OFF and then ON again will reset the DCSM to function until the DTC resets.

Each driver and front passenger seat cushion and backrest is equipped with a TED and blower motor assembly. Voltage is applied to the TED to heat/cool the seat. Applying voltage polarity to the TED in one direction causes the TED to heat. Applying voltage polarity in the opposite direction causes the TED to cool. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the incoming air depending on the control switch settings. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once activated, the DCSM maintains the heating/cooling modes until deactivated.

The temperature differences between the individual heated and cooled settings is minimal. For example, it is difficult to distinguish between low cool and medium cool settings. Measuring seat temperature at different settings is possible by monitoring the DCSM PIDs using the scan tool.

When the climate control seat buttons are activated on the touchscreen interface, the APIM sends the climate controlled seat commands to the FCIM using the I-CAN . The FCIM sends the request message to the IPC using the I-CAN . The IPC sends the request message to the BCM over the HS-CAN . Finally the BCM sends the communicates climate controlled seat commands to the DCSM using the MS-CAN . The MS-CAN is connected to the DLC for diagnostic use. No direct connection exists between the DCSM and touchscreen interface for the climate controlled seat buttons. The climate controlled seats can be commanded on or off using the scan tool to verify both module communication on the MS-CAN and operation of the DCSM . This method may be useful for isolating a control switch concern. Refer to Section 418-00 for information concerning CAN .

The climate controlled seats can be commanded using the diagnostic tool to verify both module communication on the MS-CAN bus and operation of the DCSM . This method may be useful for isolating a control switch concern. It should also be noted that because MS-CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the MS-CAN bus circuits disconnected or shorted to ground. Refer to Section 418-00 for information concerning MS-CAN bus communication.

Heating Characteristics

NOTE: The presence of overtemperature faults (DTCs B2729, B2730, B272A and B272B) can be induced by incorrect operation of the climate controlled seat system after an initial HEAT setting has been attained. If a HEAT setting is repeatedly turned OFF and ON in an attempt to increase the seat temperature, an overtemperature condition can result and the DTCs will be set.

In the LOW setting, the DCSM is set to maintain TED temperature at approximately 47°C (117°F).
In the MEDIUM setting, the DCSM is set to maintain TED temperature at approximately 55°C (131°F)
In the HIGH setting, the DCSM is set to maintain TED temperature at approximately 62°C (144°F).
When heating, the DCSM will vary the speed of the fans and the TED duty cycle in order to reach and maintain the temperature determined by the switch setting.

Cooling Characteristics

In cool mode, the TED circuits of a given seat are wired in series internally in the DCSM .
In cool mode, the TED can remove up to 8°C (14°F) from the ambient air temperature entering the system.
When cooling, the DCSM maintains constant fan speed and TED supply voltage (duty cycle) in open loop cool mode.

Climate Controlled Seat System Recovery Mode

NOTE: The presence of overtemperature faults (DTCs B2729, B2730, B272A and B272B) can be induced by incorrect operation of the climate controlled seat system after an initial heat setting has been attained. If a heat setting is repeatedly turned OFF and ON in an attempt to increase the seat temperature or repeatedly toggled between heat and cool modes, an overtemperature condition can result and the DTCs will be set.

If the temperature at one of the TEDs rises above 110°C (230°F) in the heat mode or 65°C (149°F) in the cool mode for more than 4 seconds, the DCSM will record an overtemperature DTC, remove voltage from the TEDs and go into recovery mode (blower only) for 30 seconds to cool down the TEDs . The same will occur if a temperature difference of 60°C (108°F) or greater is seen between the backrest and cushion TEDs on either front seat. The DCSM will continue to monitor the TEDs while in recovery mode. If the temperature of the TEDs does not drop to 105°C (221°F) in the heat mode or 60°C (140°F) in the cool mode after 30 seconds, the system will continue to cool the TEDs in recovery mode for up to 5 minutes. If the TEDs cool down at anytime after 30 seconds, but before 5 minutes (checked at 4-second intervals), the system will operate as normal. An overtemperature DTC will still be recorded even if the system recovers and is operating normally. Recovery mode is more likely to occur during extreme cabin temperatures with significant seat back sunload. If the system does not recover within 30 seconds in heat mode or within 5 minutes in cool mode, the DCSM will disable that seat (fault mode) and remain off until the ignition is cycled. Also, if the DCSM detects temperature differential fault twice during the same ignition cycle, it will shutdown. When a fault causes a shutdown, the climate controlled seat indicators will turn off for the affected seat and that seat will not be operational until the next key cycle.

Second Row Power-Fold Seat

For the second row power-fold seat to operate, voltage is supplied by the BCM to the power-fold seat relay, enabling the seats to then be moved by pressing the second row power-fold seat switch.

The power-fold seat relay provides voltage on the coil side from the BCM for 30 minutes when the transmission selector is in PARK, and the liftgate, or liftgate glass, is open. The voltage is disabled 30 minutes after turning the vehicle OFF. If the relay is disabled after 30 minutes, it can be enabled by opening any door, pressing the unlock key on the key fob, pressing any keyless keypad button or turning the ignition key.

The second row power-fold seat motor retracts a cable to release the backrest recliner latches and allows the backrest assist spring to fold the backrest forward onto the seat cushion. The power-fold seat motor continues to retract to release the seat-to floor latches and allows the assist spring and strut dampener to lift and tumble the seat forward to the E-Z entry position for third row seat access. Immediately after the seat is fully released, the power-fold seat motor returns the release cable and latches to a relaxed state, ready for manual latching. To return to a seating position, the seat must be manually latched to the floor and the backrest must be manually latched upright.

Third Row Power Seats

The third row power seat system includes the following components:

Third row power seat relay
Power-Fold Seat Module (PFSM)
Seat control switch
Power-stow seat motor assembly (contains LH and RH motors and sensors)
LH and RH power-fold seat motor and sensor assemblies (backrest)
LH and RH latch assemblies (contains latch motor and latch switch)

The third row power seat relay coil receives voltage from the battery saver relay in the BCM (courtesy lamp circuit) and ground from the chassis. When energized, the relay switch closes and supplies battery voltage from the Battery Junction Box (BJB) to the PFSM . Sufficient battery voltage is required for PFSM operation. If battery voltage drops below 8 volts, a started seat movement stops.

When the gear selector lever is in the PARK position and the liftgate is open, the BCM supplies voltage to the PFSM enable circuit for 30 minutes. With the ignition OFF, the BCM disables the battery saver relay after 10 minutes. The system can be re-enabled by opening any door, pressing the unlock button on the RKE transmitter or turning the ignition ON. A short to voltage on the PFSM enable circuit can result in the third row power seat being operational any time the battery saver relay is energized, regardless of gear selector lever or tailgate position.

The seat control switch contains the seat selector switch button and seat position switch buttons. The PFSM receives a voltage signal from the seat selector switch for 3 modes:

LH seat
RH seat
BOTH seats

The PFSM receives voltage signals from the seat position switches for 4 possible seat positions:

NORMAL
FOLD
STOW
TAILGATE

The power-stow seat motor assemblies rotate the LH or RH seat cushion assemblies together or separately (based on seat[s] selected) and are located at the outboard seat positions. The motor assemblies contain Hall-effect sensors that indicate seat position to the PFSM . The power-stow seat motor assemblies are part of the third row seat pivot tube assembly and are not serviceable separately.

The power-fold motor assemblies rotate the LH or RH seat backrests and are located at the backrest lower outboard positions. The motor assemblies contain Hall-effect sensors that indicate seat backrest position to the PFSM . The LH and RH power-fold motor assemblies are serviceable individually.

The LH and RH latch motors receive voltage from the PFSM . The motors share a common ground supplied by the PFSM . The seat latch motors energize and release the seat latch mechanism(s) when STOW and TAILGATE positions are selected.

The latch switches are normally open and receive approximately 12 volts from the PFSM . The LH and RH latch switches share a common return circuit in series to the PFSM . The PFSM monitors the latch switch circuits to determine if the seat latches are open or closed. The latch switch is mounted to seat latch mechanism and is not serviceable. A new power seat latch must be installed.

When STOW, FOLD or TAILGATE is selected the backrest folds forward enough to release the spring loaded headrest. If the head restraint is not folded prior to achieving FOLD, STOW or TAILGATE positions, the head restraint becomes an obstruction and prevents the seat from completing the seat movement. When an obstruction is detected during any seat movement, the seat stops, reverses movement a few inches and then stops again until the obstruction is removed. When the obstruction has been removed the seat control switch must be pressed again to reset the request. The seat moves to the home position (seat folded and latched to the floor) and then continues to the requested seat position.

On the first press of the seat control switch after the seat is repaired and a new system component has been installed, the PFSM moves the seat to the home position (seat folded and latched to the floor) before continuing to move to the selected seat position. This allows the PFSM to relearn the position of the affected motors.

Inspection and Verification

Verify the customer concern.

Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart

Mechanical	Electrical
Switch(es) Seat tracks obstructed or damaged Lumbar assembly damaged Power/manual recliner assembly damaged Thermo-Electric Device (TED) assembly filter dirty (cushion or backrest)	Battery Junction Box (BJB) fuse(s): 22 (30A) 23 (30A) 28 (30A) 29 (20A) 30 (20A) 42 (30A) Body Control Module (BCM) fuse(s): 2 (15A) 4 (10A) 7 (7.5A) 34 (10A) Wiring harness Loose or corroded connector(s) Seat control switch Latch Memory SET switch Power seat motor (seat track) Power recliner motor (power recliner assembly) Power-fold seat relay(s) Power-fold seat motor Power-stow seat motor Power-Fold Seat Module (PFSM) Heater mat (damaged seat coverings or foam pad) Heated seat module TED assembly (cushion or backrest) Dual Climate Controlled Seat Module (DCSM) Driver Door Module (DDM) DSM HVAC module Auxiliary climate control assembly Front Controls Interface Module (FCIM)

Mechanical

Electrical

Switch(es)
Seat tracks obstructed or damaged
Lumbar assembly damaged
Power/manual recliner assembly damaged
Thermo-Electric Device (TED) assembly filter dirty (cushion or backrest)

Battery Junction Box (BJB) fuse(s):
- 22 (30A)
- 23 (30A)
- 28 (30A)
- 29 (20A)
- 30 (20A)
- 42 (30A)
Body Control Module (BCM) fuse(s):
- 2 (15A)
- 4 (10A)
- 7 (7.5A)
- 34 (10A)
Wiring harness
Loose or corroded connector(s)
Seat control switch
Latch
Memory SET switch
Power seat motor (seat track)
Power recliner motor (power recliner assembly)
Power-fold seat relay(s)
Power-fold seat motor
Power-stow seat motor
Power-Fold Seat Module (PFSM)
Heater mat (damaged seat coverings or foam pad)
Heated seat module
TED assembly (cushion or backrest)
Dual Climate Controlled Seat Module (DCSM)
Driver Door Module (DDM)
DSM
HVAC module
Auxiliary climate control assembly
Front Controls Interface Module (FCIM)

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

If the concern is with the power seat (non-memory seat) or climate controlled seat and the cause is not visually evident, verify the symptom and GO to Symptom Chart .

NOTE: Make sure to use the latest scan tool software release.
If the concern is with the memory seat and the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

NOTE: The Vehicle Communication Module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM .
If the scan tool does not communicate with the VCM :
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM .
- refer to Section 418-00 , No Power To The Scan Tool, to diagnose no power to the scan tool.

If the scan tool does not communicate with the vehicle:
- verify the ignition is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to Section 418-00 to diagnose no response from the PCM.

Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Section 418-00 .
- If the network test passes, retrieve and record Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Clear the continuous DTCs and carry out the self-test diagnostics for the BCM , DDM , Driver Seat Module (DSM), DCSM and HVAC module.

If the DTCs retrieved are related to the concern, go to BCM DTC Chart, Driver Door Module (DDM) DTC Chart, Driver Seat Module (DSM) DTC Chart, Dual Climate Controlled Seat Module (DCSM) DTC Chart or HVAC Module DTC Chart. For all other DTCs, refer to Section 419-10 .

If no DTCs related to the concern are retrieved, GO to Symptom Chart .

DTC Charts

Body Control Module (BCM) DTC Chart

DTC	Description	Retrieved	Action
B1317:11	Third Row Power Fold Seat Output: Circuit Short To Ground	On-Demand	GO to Pinpoint Test AF .
B1317:15	Third Row Power Fold Seat Output: Circuit Short To Battery or Open	On-Demand and Continuous	If the third row power-fold seats do not operate, GO to Pinpoint Test AF . If the third row power-fold seats do operate, REPAIR the Power-Fold Seat Module (PFSM) enable circuit CPS48 (BU) for a short to voltage. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
All Other DTCs	—	—	REFER to Section 419-10 .

Dual Climate Controlled Seat Module (DCSM) DTC Chart

DTC	Description	Retrieved	Action
B103B	Thermoelectric Driver Overcurrent Low	On-Demand and Continuous	GO to Pinpoint Test BE .
B103C	Thermoelectric Driver Open Load	On-Demand and Continuous	GO to Pinpoint Test BF .
B103D	Blower Driver Overtemperature	On-Demand and Continuous	GO to Pinpoint Test BG .
B1111	Driver Thermo Electric Device Control Overtemperature Fault	On-Demand and Continuous	GO to Pinpoint Test BE .
B1113	Passenger Thermo Electric Device Control Overtemperature Fault	On-Demand and Continuous	GO to Pinpoint Test BH .
B111B	Passenger Thermoelectric Driver Overcurrent Low	On-Demand and Continuous	GO to Pinpoint Test BH .
B111C	Passenger Thermoelectric Driver Open Load	On-Demand and Continuous	GO to Pinpoint Test BI .
B111D	Passenger Blower Driver Overtemperature	On-Demand and Continuous	GO to Pinpoint Test BJ .
B1342	ECU is Faulted	On-Demand and Continuous	INSTALL a new Dual Climate Controlled Seat Module (DCSM). REFER to Dual Climate Controlled Seat Module (DCSM) in this section.
B19A1	Passenger Seat Cushion Blower Speed Short to Battery	On-Demand and Continuous	GO to Pinpoint Test BK .
B19A2	Passenger Seat Back Blower Speed Short to Battery	On-Demand and Continuous	GO to Pinpoint Test BL .
B19A3	Driver Seat Cushion Blower Speed Short to Battery	On-Demand and Continuous	GO to Pinpoint Test BM .
B19A4	Driver Seat Back Blower Speed Short to Battery	On-Demand and Continuous	GO to Pinpoint Test AQ .
B19A5	Passenger Seat Cushion Blower Speed Short to Ground	On-Demand and Continuous	GO to Pinpoint Test AR .
B19A6	Passenger Seat Back Blower Speed Short to Ground	On-Demand and Continuous	GO to Pinpoint Test AS .
B19A7	Driver Seat Cushion Blower Speed Short to Ground	On-Demand and Continuous	GO to Pinpoint Test AT .
B19A8	Driver Seat Back Blower Speed Short to Ground	On-Demand and Continuous	GO to Pinpoint Test AU .
B2477	Module Configuration Failure	On-Demand and Continuous	NOTE: This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost. CARRY OUT Programmable Module Installation (PMI) on the DCSM . REFER to Section 418-01 . REPEAT the self-test. If PMI is successful, the DTC will not be present.
B2486	Climate Control Seat Module Voltage Out of Range	On-Demand and Continuous	GO to Pinpoint Test AV .
B2729	Cushion Over-Temp Detected	On-Demand and Continuous	GO to Pinpoint Test AW .
B272A	Passenger Cushion Over-Temp Detected	On-Demand and Continuous	GO to Pinpoint Test AX .
B272B	Passenger Back Over-Temp Detected	On-Demand and Continuous	GO to Pinpoint Test AY .
B272C	Driver Differential Temperature Fault	On-Demand and Continuous	GO to Pinpoint Test AZ .
B272D	Passenger Differential Temperature Fault	On-Demand and Continuous	GO to Pinpoint Test BA .
B272E	Driver Ignition Run/Blower Circuit Short to Ground	On-Demand and Continuous	GO to Pinpoint Test BB .
B272F	Passenger Ignition Run/Blower Circuit Short to Ground	On-Demand and Continuous	GO to Pinpoint Test BC .
B2730	Back Over-Temp Detected	On-Demand and Continuous	GO to Pinpoint Test BD .
U2050	No Application Present	Continuous	INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. REPEAT the self-test.

Driver Door Module (DDM) DTC Chart

DTC	Description	Action
B1534	Memory 1 Switch Circuit Short to Ground	GO to Pinpoint Test K .
B1538	Memory 2 Switch Circuit Short to Ground	GO to Pinpoint Test K .
All other DTCs	—	REFER to Section 501-14A or Section 501-14B .

Driver Seat Module (DSM) DTC Chart

DTC	Description	Retrieved	Action
B106E	Solid State Driver Disabled Due To Short Circuit	Driver Seat Module (DSM)	GO to Pinpoint Test AM .
B106F	Module Disabled Due To External Fault	DSM	GO to Pinpoint Test AM .
B112B	Mirror Power Fold Switch Input Short to Battery	DSM	REFER to Section 501-09 .
B1317	Battery Voltage High	Continuous	GO to Pinpoint Test AD .
B1318	Battery Voltage Low	Continuous	GO to Pinpoint Test AN .
B1342	ECU is Faulted	On-Demand and Continuous	INSTALL a new Driver Seat Module (DSM). REFER to Driver Seat Module (DSM) in this section. CLEAR the DTCs. REPEAT the self-test.
B1663	Seat Driver Front Up/Down Motor Stalled	On-Demand	If the motor does not operate, GO to Pinpoint Test J . If motor operates, GO to Pinpoint Test K .
B1664	Seat Driver Rear Up/Down Motor Stalled	On-Demand	If the motor does not operate, GO to Pinpoint Test J . If motor operates, GO to Pinpoint Test K .
B1665	Seat Driver Forward/Backward Motor Stalled	On-Demand	If the motor does not operate, GO to Pinpoint Test J . If motor operates, GO to Pinpoint Test K .
B1666	Seat Driver Recline Motor Stalled	On-Demand	If the motor does not operate, GO to Pinpoint Test J . If motor operates, GO to Pinpoint Test K .
B1669	Mirror Passenger Up/Down Motor Stalled	—	REFER to Section 501-09 .
B1670	Mirror Passenger Right/Left Motor Stalled	—	REFER to Section 501-09 .
B1703	Seat Driver Recline Forward Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1707	Seat Driver Recline Rearward Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1711	Seat Driver Front Up Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1715	Seat Driver Front Down Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1719	Seat Driver Forward Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1723	Seat Driver Rearward Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1727	Seat Driver Rear Up Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1731	Seat Driver Rear Down Switch Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test J .
B1952	Seat Rear Up/Down Position Feedback Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test K .
B1953	Seat Rear Up/Down Position Feedback Circuit Short To Ground	On-Demand and Continuous	GO to Pinpoint Test K .
B1956	Seat Front Up/Down Position Feedback Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test K .
B1957	Seat Front Up/Down Position Feedback Circuit Short To Ground	On-Demand and Continuous	GO to Pinpoint Test K .
B1960	Seat Recline Forward/Backward Position Feedback Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test K .
B1961	Seat Recline Forward/Backward Position Feedback Circuit Short To Ground	On-Demand and Continuous	GO to Pinpoint Test K .
B1964	Seat Horizontal Forward/Rearward Position Feedback Circuit Short To Battery	On-Demand and Continuous	GO to Pinpoint Test K .
B1965	Seat Horizontal Forward/Rearward Position Feedback Circuit Short To Ground	On-Demand and Continuous	GO to Pinpoint Test K .
B2224	Mirror Passenger Drive Circuit Failure	—	REFER to Section 501-09 .
B2312	Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure	—	REFER to Section 501-09 .
B2314	Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Battery	—	REFER to Section 501-09 .
B2316	Mirror Passenger Vertical Feedback Potentiometer Circuit Failure	—	REFER to Section 501-09 .
B2318	Mirror Passenger Vertical Feedback Potentiometer Circuit Short to Battery	—	REFER to Section 501-09 .
B2477	Module Configuration Failure	Continuous	REFER to Section 418-01 .
U0140	Lost Communication With Body Control Module (GEM)	Continuous	GO to Pinpoint Test AO .
U2050	No Application Present	Continuous	INSTALL a new Driver Seat Module (DSM). REFER to Driver Seat Module (DSM) in this section. CLEAR the DTCs. REPEAT the self-test.

HVAC Module DTC Chart

DTC	Description	Action to Take
B1034:11	Left Front Seat Heater Element: Circuit Short to Ground	GO to Pinpoint Test N .
B1034:13	Left Front Seat Heater Element: Circuit Open	GO to Pinpoint Test N .
B1036:11	Right Front Seat Heater Element: Circuit Short to Ground	GO to Pinpoint Test O .
B1036:13	Right Front Seat Heater Element: Circuit Open	GO to Pinpoint Test O .
B1038:11	Left Front Seat Heater Sensor: Circuit Short to Ground	GO to Pinpoint Test N .
B1038:12	Left Front Seat Heater Sensor: Circuit Short to Battery	GO to Pinpoint Test N .
B103A:11	Right Front Seat Heater Sensor: Circuit Short to Ground	GO to Pinpoint Test O .
B103A:12	Right Front Seat Heater Sensor: Circuit Short to Battery	GO to Pinpoint Test O .
All other DTCs	—	REFER to Section 412-00 .

Symptom Chart

Symptom Chart
Condition	Possible Sources	Action
DSM does not respond to the scan tool	Fuse(s) Wiring, terminals or connectors Driver Seat Module (DSM)	REFER to Section 418-00 .
The power seat is inoperative — driver, with power recliner	Fuse Wiring, terminals or connectors Seat control switch	GO to Pinpoint Test A .
The power seat is inoperative — driver, without power recliner	Fuse Wiring, terminals or connectors Seat control switch	GO to Pinpoint Test B .
The power seat is inoperative — passenger, without power recliner	Fuse Wiring, terminals or connectors Seat control switch	GO to Pinpoint Test C .
The power seat is inoperative — passenger, with power recliner	Fuse Wiring, terminals or connectors Seat control switch	GO to Pinpoint Test G .
The power seat moves but is noisy (squeals) when moving the seat horizontally	Front seat motor cable	INSTALL a new front seat motor cable. REFER to Front Seat Motor Cable .
The power seat does not move horizontally/vertically/recline — driver, with power recliner	Wiring, terminals or connectors Seat control switch Horizontal seat track motor Power seat track assembly Power recliner mechanism	GO to Pinpoint Test D .
The power seat does not move horizontally/vertically — driver, without power recliner	Wiring, terminals or connectors Seat control switch Horizontal seat track motor Power seat track assembly	GO to Pinpoint Test E .
The power seat does not move horizontally/vertically — passenger, without power recline	Wiring, terminals or connectors Seat control switch Horizontal seat track motor Power seat track assembly	GO to Pinpoint Test F .
The power seat does not move horizontally/vertically/recline — passenger, with power recline	Wiring, terminals or connectors Seat control switch Horizontal seat track motor Power seat track assembly	GO to Pinpoint Test H .
The power lumbar is inoperative — driver	Wiring, terminals or connectors Seat control switch Power lumbar motor assembly	GO to Pinpoint Test AE .
The power lumbar is inoperative — passenger	Wiring, terminals or connectors Seat control switch Power lumbar motor assembly	GO to Pinpoint Test I .
The memory seat is inoperative/does not operate correctly — does not operate horizontally/vertically/recline	Fuse Wiring, terminals or connectors Seat control switch Horizontal seat track motor Memory seat track assembly Power recliner motor DSM	GO to Pinpoint Test J .
The memory seat does not operate correctly — the seat moves in one-second intervals	Wiring, terminals or connectors Horizontal seat track motor Memory seat track assembly DSM	CHECK for Driver Seat Module (DSM) DTCs. REFER to the DTC Chart.
The memory seat does not operate correctly — does not operate using the memory SET switch	Wiring, terminals or connectors Memory SET switch Horizontal seat track motor Memory seat track assembly Seat recliner motor Medium Speed Controller Area Network (MS-CAN) communication fault DDM DSM	GO to Pinpoint Test K .
The memory seat does not operate correctly — does not operate using the Remote Keyless Entry (RKE) transmitter	RKE transmitter is not correctly associated to a memory position Wiring, terminals or connectors RKE transmitter DSM Body Control Module (BCM)	VERIFY the Remote Keyless Entry (RKE) transmitter is operating correctly and is associated to a memory position. REFER to Owner's Literature, Section 501-14A or Section 501-14B or for information on associating a RKE transmitter. RUN the DSM self-test. REFER to the Driver Seat Module (DSM) DTC Chart to diagnose any DTCs retrieved.
Easy exit/easy entry is inoperative/does not operate correctly	Easy entry/exit feature is not enabled Wiring, terminals or connectors Missing status information (Controller Area Network (CAN) communication bus messages): key-in-ignition status gear selector position Key in ignition switch Start/stop switch (if equipped) DSM	GO to Pinpoint Test L .
The heated seat is inoperative/does not operate correctly — driver	Fuse Wiring, terminals or connectors FDIM APIM FCIM Heater mat HVAC module	GO to Pinpoint Test N .
The heated seat is inoperative/does not operate correctly — front passenger	Fuse Wiring, terminals or connectors FDIM APIM FCIM Heater mat HVAC module	GO to Pinpoint Test O .
All climate controlled seats are inoperative	Fuse Wiring, terminals or connectors I-CAN communication fault HS-CAN communication fault MS-CAN communication fault Dual Climate Controlled Seat Module (DCSM) APIM FCIM FDIM	VERIFY BJB fuse 28 (30A) is OK. If OK, CARRY OUT the network test using a scan tool and VERIFY network communication of the FCIM and Dual Climate Controlled Seat Module (DCSM). REFER to Section 418-00 to diagnose a module communication or network concern. If OK, CARRY OUT the Dual Climate Controlled Seat Module (DCSM) self-test and RETRIEVE any DTCs. If any DTC is present, REFER to the Dual Climate Controlled Seat Module (DCSM) DTC Chart. VERIFY the touchscreen operation. If the touchscreen does not operate correctly, REFER to Section 415-00B or Section 415-00C to diagnose the touchscreen. If OK, INSTALL a new Dual Climate Controlled Seat Module (DCSM). REFER to Dual Climate Controlled Seat Module (DCSM) in this section.
A single climate controlled seat is inoperative	Wiring, terminals or connectors Touchscreen DCSM	NOTE: If a fault occurs setting a DTC specific to only one climate controlled seat, the DCSM will disable only the affected seat outputs and allow the other seat to remain operational. CHECK for DTCs specific to the affected climate controlled seat and, if a DTC is present, REFER to the Dual Climate Controlled Seat Module (DCSM) DTC Chart. GO to Pinpoint Test BN .
A single climate controlled seat does not operate correctly — exhibits poor airflow or performance	Excessive sunload or extreme cabin temperatures Incorrectly installed TED or manifold Airflow blockage Disconnected air duct	CARRY OUT the DCSM self-test and retrieve any DTCs. If any DTC is present, REFER to the DCSM DTC Chart. If no DTC is present, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components ( TED , manifold air duct and foam pad) and REPAIR as needed. If OK, CHECK for air flow restrictions ( TED inlets and outlets, TED -to-manifold connections, filters and ducts) and REPAIR as needed. RETEST the system for normal operation.
The power seat is inoperative/does not operate correctly — second row, power-fold	Fuse(s) Wiring, terminals or connectors Power-fold switch Power-fold seat actuator Seat recliner Seat track Gas assist strut	GO to Pinpoint Test R .
The power seat is inoperative — second row, power-fold seat does not latch to the floor	Fuse Wiring, terminals or connectors Latch(es) Release cable(s) Latch release pull strap Power-fold seat actuator BCM	GO to Pinpoint Test S .
The heated seats are inoperative — rear	Fuse(s) Wiring, terminals or connectors Heated seat module	GO to Pinpoint Test T .
The heated seat is inoperative/does not operate correctly — left rear	Fuse(s) Wiring, terminals or connectors Heater mat Auxiliary climate control assembly Rear heated seat module	GO to Pinpoint Test U .
The heated seat is inoperative/does not operate correctly — right rear	Fuse(s) Wiring, terminals or connectors Heater mat Auxiliary climate control assembly Rear heated seat module	GO to Pinpoint Test V .
The heated seat does not operate correctly — left rear seat does heat but the heated seat indicator does not illuminate when pressed	Wiring, terminals or connectors Auxiliary climate control assembly Rear heated seat module	GO to Pinpoint Test W .
The heated seat does not operate correctly — right rear seat does heat but the heated seat indicator does not illuminate when pressed	Wiring, terminals or connectors Auxiliary climate control assembly Rear heated seat module	GO to Pinpoint Test X .
The heated seat does not operate correctly — left rear seat does heat but the heated seat indicator is on all the time	Wiring, terminals or connectors Rear heated seat module	GO to Pinpoint Test Y .
The heated seat does not operate correctly — right rear seat does heat but the heated seat indicator is on all the time	Wiring, terminals or connectors Rear heated seat module	GO to Pinpoint Test Z .
The seat backrest will not fold upright — second row, 60 percent	Safety belt web stop missing Inboard recliner Outboard recliner	GO to Pinpoint Test AA .
The seat backrest will not fold down — second row, 60 percent	Recliner cable disconnected or damaged Outboard recliner Inboard recliner	GO to Pinpoint Test AB .
The seat backrest will not fold down/fold upright — second row, 40 percent (RH or LH)	Recliner cable disconnected or damaged Recliner	GO to Pinpoint Test AC .
The power seat is inoperative/does not operate correctly — third row power seat	Fuse(s) Wiring, terminals or connectors Third row power seat relay Seat control switch Power-stow seat motor Power-fold seat motor Latch Power-Fold Seat Module (PFSM) BCM	GO to Pinpoint Test AF .
The third row power seat operates in one-second intervals	Wiring, terminals or connectors Power-stow seat motor Power-fold seat motor Sensor (integral to the motor) PFSM	GO to Pinpoint Test AF .
The third row power seat head restraint does not release and fold down correctly when the seat is moved	Head restraint assembly Seat backrest cover or backrest foam pad incorrectly installed	CHECK for a bind between the head restraint and backrest cover. If binding is present, CORRECTLY INSTALL the backrest cover and foam pad. REFER to Seat Backrest Cover — Third Row, Power in this section. If binding is not present, INSTALL a new head restraint assembly. REFER to Seat Backrest — Third Row, Power in this section. TEST the system for normal operation.

Pinpoint Tests

NOTICE: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.

Refer to Inspection and Verification, the Driver Seat Module (DSM) DTC Chart, HVAC Module DTC Chart, BCM DTC Chart and the Symptom Chart for direction to the appropriate pinpoint test.

Pinpoint Test A: The Power Seat is Inoperative — Driver, With Power Recliner

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The driver seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies voltage and ground to a power seat track motor or power recliner motor to move the seat or backrest to the desired position. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). There is an additional motor in the power recliner mechanism to move the seat backrest forward and rearward. If a new motor needs to be installed, it is necessary to install an entire power seat track or power recliner mechanism.

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
Seat control switch

PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE — DRIVER, WITH POWER RECLINER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
A1 CHECK THE DRIVER SEAT CONTROL SWITCH FOR VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Control Switch C369 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the voltage between driver seat control switch C369-5, circuit CBX05 (VT/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to A2 . No VERIFY Battery Junction Box (BJB) fuse 23 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify possible causes of the circuit short. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
A2 CHECK DRIVER SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
Measure the resistance between driver seat control switch C369-3, circuit GD904 (BK/BU), harness side and ground. Is the resistance less than 3 ohms?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test B: The Power Seat is Inoperative — Driver, Without Power Recliner

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The driver seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat to the desired position. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). If a new motor needs to be installed, it is necessary to install an entire power seat track.

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
Seat control switch

PINPOINT TEST B: THE POWER SEAT IS INOPERATIVE — DRIVER, WITHOUT POWER RECLINER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
B1 CHECK THE DRIVER SEAT CONTROL SWITCH FOR VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Control Switch C360 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the voltage between driver seat control switch C360-4, circuit CBX05 (VT/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to B2 . No VERIFY Battery Junction Box (BJB) fuse 23 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify possible causes of the circuit short. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
B2 CHECK DRIVER SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
Measure the resistance between driver seat control switch C360-2, circuit GD904 (BK/BU), harness side and ground. Is the resistance less than 3 ohms?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test C: The Power Seat is Inoperative — Passenger, Without Power Recliner

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The passenger seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies voltage and ground to the appropriate seat track motor to move the seat to the desired position. There are 3 seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down).

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
Seat control switch

PINPOINT TEST C: THE POWER SEAT IS INOPERATIVE — PASSENGER, WITHOUT POWER RECLINER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
C1 CHECK THE PASSENGER SEAT CONTROL SWITCH FOR VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Control Switch C3190 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the voltage between passenger seat control switch C3190-4, circuit CBX05 (VT/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to C2 . No VERIFY Battery Junction Box (BJB) fuse 42 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify possible causes of the circuit short. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
C2 CHECK THE PASSENGER SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
Measure the resistance between passenger seat control switch C3190-2, circuit GD903 (BK/WH), harness side and ground. Is the resistance less than 3 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test D: The Power Seat Does Not Move Horizontally/Vertically/Recline — Driver, With Power Recliner

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The driver seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies voltage and ground to the appropriate power seat track motor or power recliner motor to move the seat or backrest. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). There is an additional motor in the power recliner mechanism to pivot the seat backrest forward and rearward.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Seat control switch
Horizontal seat track motor
Power seat track assembly
Power recliner mechanism

PINPOINT TEST D: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY/RECLINE — DRIVER, WITH POWER RECLINER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
D1 CHECK HORIZONTAL MOTOR FOR CORRECT OPERATION
Operate the driver power seat forward and rearward. Does the seat move horizontally?	Yes GO to D2 . No GO to D3 .
D2 CHECK RECLINER MOTOR FOR CORRECT OPERATION
Recline the driver backrest forward and rearward. Does the seat backrest recline forward and rearward?	Yes GO to D6 . No GO to D13 .
D3 CHECK THE VOLTAGE TO THE DRIVER SEAT HORIZONTAL MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Horizontal Motor C362 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between driver seat horizontal motor C362-1, circuit CPS23 (GN/VT), harness side and C362-2, circuit CPS28 (GN), harness side, while pushing the driver seat control switch forward and rearward. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new front seat track motor. REFER to Seat Track Motor — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to D4 .
D4 CHECK HORIZONTAL MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C369 . Measure the resistance between: driver seat control switch C369-4, circuit CPS23 (GN/VT), harness side and driver seat horizontal motor C362-1, circuit CPS23 (GN/VT), harness side. driver seat control switch C369-4, circuit CPS23 (GN/VT), harness side and ground. Is the resistance less than 3 ohms between the driver seat horizontal motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes GO to D5 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D5 CHECK HORIZONTAL MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Measure the resistance between: driver seat control switch C369-9, circuit CPS28 (GN), harness side and driver seat horizontal motor C362-2, circuit CPS28 (GN), harness side. driver seat control switch C369-9, circuit CPS28 (GN), harness side and ground. Is the resistance less than 3 ohms between the driver seat horizontal motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D6 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Adjust both front and rear seat height up and down to determine the failure. Does the seat front or rear height adjust up and down?	Yes If only front height adjustment operates, GO to D7 . If only rear height adjustment operates, GO to D10 . No INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D7 CHECK THE VOLTAGE TO THE DRIVER SEAT REAR HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Rear Height Motor C363 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between driver seat rear height motor C363-5, circuit CPS26 (YE/BU), harness side and C363-1, circuit CPS27 (BU/BN), harness side, while operating the seat control switch rear height adjust up and down. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to D8 .
D8 CHECK THE REAR SEAT HEIGHT MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C369 . Measure the resistance between: driver seat control switch C369-1, circuit CPS27 (BU/BN), harness side and driver seat rear height motor C363-1, circuit CPS27 (BU/BN), harness side. driver seat control switch C369-1, circuit CPS27 (BU/BN), harness side and ground. Is the resistance less than 3 ohms between the driver seat rear height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes GO to D9 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D9 CHECK THE REAR SEAT HEIGHT MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Measure the resistance between: driver seat control switch C369-12, circuit CPS26 (YE/BU), harness side and driver seat rear height motor C363-5, circuit CPS26 (YE/BU), harness side. driver seat control switch C369-12, circuit CPS26 (YE/BU), harness side and ground. Is the resistance less than 3 ohms between the driver seat rear height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D10 CHECK THE VOLTAGE TO THE DRIVER SEAT FRONT HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Front Height Motor C382 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between driver seat front height motor C382-1, circuit CPS24 (GY), harness side and C382-2, circuit CPS25 (WH/VT), while pushing the seat control switch front height adjust up and down. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to D11 .
D11 CHECK THE DRIVER SEAT FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C369 . Measure the resistance between: driver seat control switch C369-2, circuit CPS25 (WH/VT), harness side and driver seat front height motor C382-2, circuit CPS25 (WH/VT), harness side. driver seat control switch C369-2, circuit CPS25 (WH/VT), harness side and ground. Is the resistance less than 3 ohms between the driver seat front height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes GO to D12 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D12 CHECK THE DRIVER SEAT FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN AND A SHORT TO GROUND
Measure the resistance between: driver seat control switch C369-6, circuit CPS24 (GY) harness side, and driver seat front height motor C382-1, circuit CPS24 (GY), harness side. driver seat control switch C369-6, circuit CPS24 (GY), harness side and ground. Is the resistance less than 3 ohms between the driver seat front height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D13 CHECK THE VOLTAGE TO THE DRIVER SEAT RECLINER MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Recliner Motor C3187 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between driver seat recliner motor C3187-3, circuit CPS08 (VT/OG), harness side and C3187-1, circuit CPS07 (GY/BN), while pushing the recline switch forward and rearward. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new driver seat recliner motor. REFER to Seat Recliner Motor — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to D14 .
D14 CHECK DRIVER SEAT RECLINER MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C369 . Measure the resistance between: driver seat control switch C369-8, circuit CPS30 (VT/BN), harness side and driver seat recliner motor C3187-3, circuit CPS08 (VT/OG), harness side. driver seat control switch C369-8, circuit CPS30 (VT/BN), harness side and ground. Is the resistance less than 3 ohms between the driver seat recliner motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes GO to D15 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
D15 CHECK DRIVER SEAT RECLINER MOTOR CIRCUIT FOR AN OPEN AND A SHORT TO GROUND
Measure the resistance between: driver seat control switch C369-11, circuit CPS29 (WH/BN) harness side, and driver seat recliner motor C3187-1, circuit CPS07 (GY/BN), harness side; driver seat control switch C369-11, circuit CPS29 (WH/BN), harness side and ground. Is the resistance less than 3 ohms between the driver seat recliner motor and the driver seat control switch, and greater than 10,000 ohms between the seat control switch and ground?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test E: The Power Seat Does Not Move Horizontally/Vertically — Driver, Without Power Recliner

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The driver seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). If a new motor needs to be installed, it is necessary to install an entire power seat track.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Seat control switch
Horizontal seat track motor
Power seat track assembly

PINPOINT TEST E: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY — DRIVER, WITHOUT POWER RECLINER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
E1 CHECK HORIZONTAL MOTOR FOR CORRECT OPERATION
Operate the driver power seat forward and rearward. Does the seat move horizontally?	Yes GO to E5 . No GO to E2 .
E2 CHECK THE VOLTAGE TO THE DRIVER SEAT HORIZONTAL MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Horizontal Motor C362 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between driver seat horizontal motor C362-1, circuit CPS23 (GN/VT), harness side and C362-2, circuit CPS28 (GN), harness side, while pushing the driver seat control switch forward and rearward. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new front seat track motor. REFER to Seat Track Motor — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to E3 .
E3 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C360 . Measure the resistance between: driver seat control switch C360-3, circuit CPS23 (GN/VT), harness side and driver seat horizontal motor C362-1, circuit CPS23 (GN/VT), harness side; driver seat control switch C360-3, circuit CPS23 (GN/VT), harness side and ground. Is the resistance less than 3 ohms between the driver seat horizontal motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes GO to E4 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
E4 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Measure the resistance between: driver seat control switch C360-6, circuit CPS28 (GN), harness side and driver seat horizontal motor C362-2, circuit CPS28 (GN), harness side. driver seat control switch C360-6, circuit CPS28 (GN), harness side and ground. Is the resistance less than 3 ohms between the driver seat horizontal motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
E5 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Adjust both front and rear seat height up and down to determine the failure. Does the seat front or rear height adjust up and down?	Yes If only front height adjust operates, GO to E6 . If only rear height adjust operates, GO to E9 . No INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
E6 CHECK THE VOLTAGE TO THE DRIVER SEAT REAR HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Rear Height Motor C363 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between driver seat rear height motor C363-5, circuit CPS26 (YE/BU), harness side and C363-1, circuit CPS27 (BU/BN), harness side, while operating the seat control switch rear height adjust up and down. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to E7 .
E7 CHECK THE DRIVER SEAT REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C360 . Measure the resistance between: driver seat control switch C360-5, circuit CPS27 (BU/BN), harness side and driver seat rear height motor C363-1, circuit CPS27 (BU/BN), harness side. driver seat control switch C360-5, circuit CPS27 (BU/BN), harness side and ground. Is the resistance less than 3 ohms between the driver seat rear height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes GO to E8 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
E8 CHECK THE DRIVER SEAT REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Measure the resistance between: driver seat control switch C360-7, circuit CPS26 (YE/BU), harness side and driver seat rear height motor C363-5, circuit CPS26 (YE/BU), harness side. driver seat control switch C360-7, circuit CPS26 (YE/BU), harness side and ground. Is the resistance less than 3 ohms between the driver seat rear height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
E9 CHECK THE VOLTAGE TO THE DRIVER SEAT FRONT HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Front Height Motor C382 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between driver seat front height motor C382-1, circuit CPS24 (GY), harness side and C382-2, circuit CPS25 (WH/VT), while operating the seat control switch front height adjust up and down. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to E10 .
E10 CHECK THE FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C360 . Measure the resistance between: driver seat control switch C360-1, circuit CPS25 (WH/VT), harness side and driver seat front height motor C382-2, circuit CPS25 (WH/VT), harness side. driver seat control switch C360-1, circuit CPS25 (WH/VT), harness side and ground. Is the resistance less than 3 ohms between the driver seat front height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes GO to E11 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
E11 CHECK THE FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN AND A SHORT TO GROUND
Measure the resistance between: driver seat control switch C360-8, circuit CPS24 (GY) harness side, and driver seat front height motor C382-1, circuit CPS24 (GY), harness side. driver seat control switch C360-8, circuit CPS24 (GY), harness side and ground. Is the resistance less than 3 ohms between the driver seat front height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test F: The Power Seat Does Not Move Horizontally/Vertically — Passenger, Without Power Recline

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The passenger seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There is a power seat track motor that moves the seat horizontally (forward/reverse) and a motor in the power recliner mechanism that moves the seat backrest forward or rearward.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Seat control switch
Horizontal seat track motor
Power seat track assembly

PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY — PASSENGER, WITHOUT POWER RECLINE

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
F1 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION
Operate the power seat forward and backward. Does the seat move horizontally?	Yes GO to F2 . No GO to F3 .
F2 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Operate the front and rear seat height adjustments. Does the seat front and rear height adjust up and down?	Yes If only front height adjust operates, GO to F6 . If only rear height adjust operates, GO to F9 . No INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation.
F3 CHECK THE VOLTAGE TO THE HORIZONTAL MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Safety Belt Buckle C3066 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Horizontal Motor C332 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between horizontal motor C332-1, circuit CPS38 (GN/BU), harness side and C332-2, circuit CPS33 (WH), harness side, while depressing the seat control switch forward and backward. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new front seat track motor. REFER to Seat Track Motor — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to F4 .
F4 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
Disconnect: Seat Control Switch C3190 . Measure the resistance between seat control switch C3190-6, circuit CPS38 (GN/BU), harness side and horizontal motor C332-1, circuit CPS38 (GN/BU), harness side. Is the resistance less than 3 ohms?	Yes GO to F5 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
F5 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
Measure the resistance between seat control switch C3190-3, circuit CPS33 (WH), harness side and horizontal motor C332-2, circuit CPS33 (WH), harness side. Is the resistance less than 3 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
F6 CHECK THE VOLTAGE TO THE REAR HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Rear Height Motor C3075 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between rear height motor C3075-1, circuit CPS37 (WH/BU), harness side and C3075-5, circuit CPS36 (YE/GY), harness side, while depressing the seat control switch rear height adjust up and down. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to F7 .
F7 CHECK THE REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
Disconnect: Seat Control Switch C3190 . Measure the resistance between seat control switch C3190-7, circuit CPS37 (WH/BU), harness side and rear height motor C3075-1, circuit CPS37 (WH/BU), harness side. Is the resistance less than 3 ohms?	Yes GO to F8 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
F8 CHECK THE REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
Measure the resistance between seat control switch C3190-5, circuit CPS36 (YE/GY), harness side and rear height motor C3075-5, circuit CPS36 (YE/GY), harness side. Is the resistance less than 3 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
F9 CHECK THE VOLTAGE TO THE FRONT HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Front Height Motor C3074 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between front height motor C3074-1, circuit CPS35 (VT/GN), harness side and C3074-2, circuit CPS34 (GY/BU), while depressing the seat control switch front height adjust up and down. Is the voltage greater than 11 volts when the seat control switch is operated and 0 volt in the rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to F10 .
F10 CHECK THE FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN
Disconnect: Seat Control Switch C3190 . Measure the resistance between seat control switch C3190-8, circuit CPS35 (VT/GN), harness side and front height motor C3074-1, circuit CPS35 (VT/GN), harness side. Is the resistance less than 3 ohms?	Yes GO to F11 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
F11 CHECK THE FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN
Measure the resistance between seat control switch C3190-1, circuit CPS34 (GY/BU), harness side, and front height motor C3074-2, circuit CPS34 (GY/BU), harness side. Is the resistance less than 3 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test G: The Power Seat is Inoperative — Passenger, With Power Recliner

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The passenger seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies voltage and ground to a power seat track motor or power recliner motor to move the seat or backrest to the desired position. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). There is an additional motor in the power recliner mechanism to move the seat backrest forward and rearward. If a new motor needs to be installed, it is necessary to install an entire power seat track or power recliner mechanism.

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
Seat control switch

PINPOINT TEST G: THE POWER SEAT IS INOPERATIVE — PASSENGER, WITH POWER RECLINER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
G1 CHECK THE PASSENGER SEAT CONTROL SWITCH FOR VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Control Switch C330 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the voltage between driver seat control switch C330-5, circuit CBX05 (VT/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to G2 . No VERIFY Battery Junction Box (BJB) fuse 42 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify possible causes of the circuit short. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
G2 CHECK THE PASSENGER SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
Measure the resistance between passenger seat control switch C330-3, circuit GD903 (BK/WH), harness side and ground. Is the resistance less than 3 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test H: The Power Seat Does Not Move Horizontally/Vertically/Recline — Passenger, With Power Recline

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Seat control switch
Horizontal seat track motor
Power seat track assembly
Power recliner mechanism

PINPOINT TEST H: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY/RECLINE — PASSENGER, WITH POWER RECLINE

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
H1 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION
Operate the passenger seat forward and rearward. Will the seat move horizontally?	Yes GO to H2 . No GO to H3 .
H2 CHECK THE RECLINER MOTOR FOR CORRECT OPERATION
Recline the passenger backrest forward and rearward. Will the seat backrest recline forward and rearward?	Yes GO to H6 . No GO to H13 .
H3 CHECK FOR VOLTAGE TO THE HORIZONTAL MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Horizontal Motor C332 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between passenger seat horizontal motor C332-1, circuit CPS38 (GN/BU), harness side and C332-2, circuit CPS33 (WH), harness side, while pushing the passenger seat control switch forward and rearward. Is the voltage greater than 11 volts when the seat control switch is operated in both directions and 0 volt in the rest position?	Yes INSTALL a new front seat track motor. REFER to Seat Track Motor — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to H4 .
H4 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
Disconnect: Passenger Seat Control Switch C330 . Measure the resistance between passenger seat control switch C330-9, circuit CPS38 (GN/BU), harness side and passenger seat horizontal motor C332-1, circuit CPS38 (GN/BU), harness side. Is the resistance less than 3 ohms?	Yes GO to H5 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
H5 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
Measure the resistance between passenger seat control switch C330-4, circuit CPS33 (WH), harness side and passenger seat horizontal motor C332-2, circuit CPS33 (WH), harness side. Is the resistance less than 3 ohms?	Yes INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
H6 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Operate the seat front and rear height adjustments. Does the seat front and rear height adjust up and down?	Yes If only the front height adjust motor operates, GO to H7 . If only the rear height adjust motor operates, GO to H10 . No INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation.
H7 CHECK FOR VOLTAGE TO THE REAR HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Rear Height Motor C3075 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between passenger seat rear height motor C3075-5, circuit CPS36 (YE/GY), harness side and C3075-1, circuit CPS37 (WH/BU), harness side, while depressing the rear height adjust switch up and down. Is the voltage greater than 11 volts when the seat control switch is operated in both directions and 0 volt in the rest position?	Yes INSTALL a new seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to H8 .
H8 CHECK THE REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
Disconnect: Passenger Seat Control Switch C330 . Measure the resistance between passenger seat control switch C330-1, circuit CPS36 (YE/GY), harness side and passenger seat rear height motor C3075-5, circuit CPS36 (YE/GY), harness side. Is the resistance less than 3 ohms?	Yes GO to H9 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
H9 CHECK THE REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
Measure the resistance between passenger seat control switch C330-12, circuit CPS37 (WH/BU), harness side and passenger seat rear height motor C3075-1, circuit CPS37 (WH/BU), harness side. Is the resistance less than 3 ohms?	Yes INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
H10 CHECK FOR VOLTAGE TO THE FRONT HEIGHT MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Front Height Motor C3074 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between passenger seat front height motor C3074-1, circuit CPS35 (VT/GN), harness side and C3074-2, circuit CPS34 (GY/BU), while depressing the front height adjust switch up and down. Is the voltage greater than 11 volts when the seat control switch is operated in both directions and 0 volt in the rest position?	Yes INSTALL a new seat track assembly. REFER to Seat Track — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to H11 .
H11 CHECK THE FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN
Disconnect: Passenger Seat Control Switch C330 . Measure the resistance between passenger seat control switch C330-2, circuit CPS34 (GY/BU), harness side and passenger seat front height motor C3074-2, circuit CPS34 (GY/BU), harness side. Is the resistance less than 3 ohms?	Yes GO to H12 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
H12 CHECK THE FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN
Measure the resistance between passenger seat control switch C330-6, circuit CPS35 (VT/GN) harness side, and passenger seat front height motor C3074-1, circuit CPS35 (VT/GN), harness side. Is the resistance less than 3 ohms?	Yes INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
H13 CHECK FOR VOLTAGE TO THE RECLINER MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Recliner Motor C3189 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between passenger seat recliner motor C3189-3, circuit CPS08 (VT/OG), harness side and C3189-1, circuit CPS07 (GY/BN), while pushing the recline switch forward and rearward. Is the voltage greater than 11 volts when the seat control switch is operated in both directions and 0 volt in the rest position?	Yes INSTALL a new seat recliner motor. REFER to Seat Recliner Motor — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to H14 .
H14 CHECK THE RECLINER MOTOR CIRCUIT FOR AN OPEN
Disconnect: Passenger Seat Control Switch C330 . Measure the resistance between passenger seat control switch C330-11, circuit CPS39 (GY/YE), harness side and passenger seat recliner motor C3189-1, circuit CPS07 (GY/BN), harness side. Is the resistance less than 3 ohms?	Yes GO to H15 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
H15 CHECK THE RECLINER MOTOR CIRCUIT FOR AN OPEN
Measure the resistance between passenger seat control switch C330-8, circuit CPS40 (VT/GY) harness side, and passenger seat recliner motor C3189-3, circuit CPS08 (VT/OG), harness side. Is the resistance less than 3 ohms?	Yes INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test I: The Power Lumbar is Inoperative — Passenger

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 123 , Memory Seats for schematic and connector information.

Normal Operation

The seat control switch is supplied battery voltage and ground at all times. When the lumbar button is pressed, voltage and ground are supplied to the power lumbar motor to move the lumbar assembly in the desired direction.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Seat control switch
Power lumbar motor assembly

PINPOINT TEST I: THE POWER LUMBAR IS INOPERATIVE — PASSENGER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
I1 CHECK FOR VOLTAGE TO THE LUMBAR MOTOR
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Power Lumbar Motor C3216 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure voltage between power lumbar motor C3216-B, circuit CPS18 (BN/GN), harness side and power lumbar motor C3216-A, circuit CPS19 (GY/VT), harness side. Operate the seat control switch in both directions. Is the voltage greater than 11 volts in both directions?	Yes INSTALL a new power lumbar assembly. REFER to Lumbar Assembly — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to I2 .
I2 CHECK THE LUMBAR MOTOR CIRCUITS FOR AN OPEN
Disconnect: Passenger Seat Control Switch C330 . Measure the resistance between: seat control switch C330-10, circuit CPS20 (VT), harness side and power lumbar motor C3216-B, circuit CPS18 (BN/GN), harness side. seat control switch C330-7, circuit CPS21 (WH/OG), harness side and power lumbar motor C3216-A, circuit CPS19 (GY/VT), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test J: The Memory Seat is Inoperative/Does Not Operate Correctly — Does Not Operate Horizontally/Vertically/Recline

Refer to Wiring Diagrams Cell 123 , Memory Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 149 , Component Testing for component testing.

Normal Operation

The driver seat control switch is supplied battery voltage and ground. When pressed, the seat control switch supplies voltage and ground to the applicable Driver Seat Module (DSM) inputs. The DSM then supplies voltage and ground to the appropriate power seat track or recline motor based on the inputs received from the seat control switch. There are 3 power seat track motors that combine to move the seat horizontally (forward/backward) and vertically (front up/down and rear up/down). The recliner mechanism uses a single motor to pivot the seat backrest forward and backward.

Each motor in the memory seat track and recliner contain a Hall-effect position sensor. The DSM supplies a shared signal feed circuit to each sensor. Each position sensor sends a signal pulse back to the DSM to monitor the position of the power seat and seat backrest. The DSM uses this information to return the seat to a stored pre-programmed position when pressing the memory SET switch or a Remote Keyless Entry (RKE). For information on programming memory positions or recalling a stored memory position, refer to Memory Position Programming in this section.

The following pinpoint test diagnoses a memory seat that does not operate in one or more directions when using the seat control switch. If the memory seat moves in all directions using the seat control switch, but does not operate using the memory SET switch, GO to Pinpoint Test K .

DTC Description	Fault Trigger Conditions
B1663 — Seat Driver Front Up/Down Motor Stalled B1664 — Seat Driver Rear Up/Down Motor Stalled B1665 — Seat Driver Forward/Backward Motor Stalled	During self-test, the Driver Seat Module (DSM) attempts to operate the appropriate seat track motor and uses the motor position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM will retry motor operation on the next activation of the seat control switch. If no movement continues to be monitored after 250 milliseconds, the DSM disables the output.
B1666 — Seat Driver Recline Motor Stalled	During self-test, the DSM attempts to operate the recliner motor and uses the recliner motor position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM will retry motor operation on the next activation of the seat control switch. If no motor movement is still monitored after 250 milliseconds, the DSM disables the output.
B1703 — Seat Driver Recline Forward Switch Circuit Short to Battery B1707 — Seat Driver Recline Rearward Switch Circuit Short to Battery	If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
B1711 — Seat Driver Front Up Switch Circuit Short to Battery B1715 — Seat Driver Front Down Switch Circuit Short to Battery	If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
B1719 — Seat Driver Forward Switch Circuit Short to Battery B1723 — Seat Driver Rearward Switch Circuit Short to Battery	If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
B1727 — Seat Driver Rear Up Switch Circuit Short to Battery B1731 — Seat Driver Rear Down Switch Circuit Short to Battery	If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
Seat control switch
Missing status information — Medium Speed Controller Area Network (MS-CAN) communication bus messages:
Horizontal seat track motor
Memory seat track assembly
Power recliner motor
DSM

PINPOINT TEST J: THE MEMORY SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

NOTE: If a new DSM has been installed, all memory seat soft stops must be reset. If a new seat track or recline motor has been installed, only reset the soft stops for that component being installed new. To reset the soft stops, refer to Principles of Operation in this section.

NOTE: Refer to Description and Operation, Intelligent Access with Push Button Start in Section 419-01A to review the procedures for achieving the various ignition states (ignition OFF, ignition in ACCESSORY, ignition ON, ignition START) on vehicles with this feature.

Test Step

Result / Action to Take

J1 RETRIEVE THE DSM DTCs

Operate the memory seat in all directions through the full range of travel.
Place the memory seat in central travel positions.
Enter the following diagnostic mode on the scan tool: Self-Test — DSM .
Are any DTCs retrieved?

Yes
If DTCs B1663, B1664, B1665 and B1666 are all retrieved, GO to J10 .

If DTC B1663, GO to J20 .

If DTC B1664, GO to J23 .

If DTC B1665, GO to J26 .

If DTC B1666, GO to J29 .

If DTC B1703, B1707, B1711, B1715, B1719, B1723, B1727 or B1731, GO to J3 .

If DTC B1342, INSTALL a new . REFER to Driver Seat Module (DSM) in this section. CLEAR the DTCs. REPEAT the self-test.

For any other DTCs, REFER to the Driver Seat Module (DSM) DTC Chart.

No
GO to J2 .

J2 CHECK THE DSM SEAT CONTROL SWITCH PIDs

Enter the following diagnostic mode on the scan tool: DataLogger — DSM — PIDs .
Operate the seat control switch in all positions and monitor the following DSM seat control switch PIDs:

Driver Power Seat Front Up/Down Switch (SFNT_SW)
Driver Power Seat Forward/Backward Switch (SFWD_SW)
Driver Power Seat Rear Up/Down Switch (SREARSW)
Driver Power Seat Recline Switch Status (SRCL_SW)

Do the PID states agree with the switch positions?

Yes
GO to J9 .

No
VERIFY Body Control Module (BCM) fuse 2 (15A) is OK.

If the fuse fails while operating the seat control switch, DISCONNECT the seat control switch C369 and GO to J7 .

If the fuse is OK, GO to J3 .

J3 CHECK THE SEAT CONTROL SWITCH

Remove the seat control switch. Refer to Seat Control Switch — Front in this section.
Check the seat control switch.
Refer to Wiring Diagrams Cell 149 , Component Testing for component testing.
Is the seat control switch OK?

Yes
GO to J4 .

No
INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section.CLEAR the DTCs. REPEAT the self-test

J4 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the voltage between seat control switch C369-5, circuit CBX04 (WH/RD), harness side and ground.

Is the voltage greater than 11 volts?

Yes
GO to J5 .

No
VERIFY Body Control Module (BCM) fuse 2 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J5 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

Measure the resistance between seat control switch C369-3, circuit GD904 (BK/BU), harness side and ground.

Is the resistance less than 3 ohms?

Yes
GO to J6 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J6 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM FOR A SHORT TO VOLTAGE

Disconnect: DSM C341B .
Ignition ON.
Measure voltage between seat control switch C369, harness side and ground using the following chart:

Connector	Circuit
C369-1	CPS27 (BU/BN)
C369-2	CPS25 (WH/VT)
C369-4	CPS23 (GN/VT)
C369-6	CPS24 (GY)
C369-8	CPS30 (VT/BN)
C369-9	CPS28 (GN)
C369-11	CPS29 (WH/BN)
C369-12	CPS26 (YE/BU)

Is voltage present on any circuits?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
GO to J7 .

J7 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: DSM C341B .
Disconnect: Driver Seat Control Switch C369 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between seat control switch C369, harness side and ground using the following chart:

Connector	Circuit
C369-1	CPS27 (BU/BN)
C369-2	CPS25 (WH/VT)
C369-4	CPS23 (GN/VT)
C369-6	CPS24 (GY)
C369-8	CPS30 (VT/BN)
C369-9	CPS28 (GN)
C369-11	CPS29 (WH/BN)
C369-12	CPS26 (YE/BU)

Are the resistances greater than 10,000 ohms?

Yes
GO to J8 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J8 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM FOR AN OPEN

Measure the resistance between seat control switch C369, harness side and DSM C341B, harness side using the following chart:

Seat Control Switch Connector	Circuit	DSM Connector
C369-1	CPS27 (BU/BN)	C341B-17
C369-2	CPS25 (WH/VT)	C341B-18
C369-4	CPS23 (GN/VT)	C341B-16
C369-6	CPS24 (GY)	C341B-6
C369-8	CPS30 (VT/BN)	C341B-7
C369-9	CPS28 (GN)	C341B-15
C369-11	CPS29 (WH/BN)	C341B-19
C369-12	CPS26 (YE/BU)	C341B-5

Are the resistances less than 3 ohms?

Yes
INSTALL a new . REFER to Driver Seat Module (DSM) in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J9 CHECK THE SEAT TRACK OPERATION USING DSM ACTIVE COMMANDS AND PIDs

Enter the following diagnostic mode on the scan tool: DataLogger — DSM — PIDs .
Toggle the following DSM active commands ON and OFF while monitoring the seat movement:

Front Motor Up (FRONT_UP)
Front Motor Down (FRONT_DWN)
Rear Motor Up (REAR_UP)
Rear Motor Down (REAR_DWN)
Horizontal Motor Forward (HORZ_FWD)
Horizontal Motor Backward (HORZ_BWD)
Recline Motor Backward (RECL_BWD)
Recline Motor Forward (RECL_FWD)

Does the driver seat operate correctly?

Yes
The condition may be intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
If no seat movement, GO to J10 .

If no front vertical seat movement, GO to J20 .

If no rear vertical seat movement, GO to J23 .

If no horizontal seat movement, GO to J26 .

If no recline seat movement, GO to J29 .

J10 CHECK FOR VOLTAGE TO THE DSM

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: DSM C341A and C341B .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the voltage between:

DSM C341A-1, circuit CBX05 (VT/RD), harness side and ground.

DSM C341B-1, circuit CBX03 (BU/RD), harness side and ground.

Are the voltages greater than 11 volts?

Yes
GO to J11 .

No
VERIFY Battery Junction Box (BJB) fuse 23 (30A) or fuse 7 (7.5A) are OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J11 CHECK THE DSM GROUND CIRCUITS FOR AN OPEN

Disconnect: DSM C341B .
Measure the resistance between:

DSM C341A-2, circuit GD906 (BK/GY), harness side and ground.

DSM C341B-24, circuit GD905 (BK/GN), harness side and ground.

Is the resistance less than 3 ohms?

Yes
GO to J12 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J12 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Disconnect: DSM C341B .
Measure the resistance between:

DSM C341B-23, circuit CPS03 (VT/GY), harness side and ground.

DSM C341B-11, circuit CPS02 (GY/YE), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to J14 .

No
GO to J13 .

J13 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Disconnect: Power Seat Motor C382 .
Measure the resistance between:

DSM C341B-23, circuit CPS03 (VT/GY), harness side and ground.

DSM C341B-11, circuit CPS02 (GY/YE), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new driver seat track assembly. REFER to Seat Track — Front in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J14 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Measure the resistance between:

DSM C341B-22, circuit CPS05 (BU/WH), harness side and ground.

DSM C341B-10, circuit CPS04 (YE/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to J16 .

No
GO to J15 .

J15 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Disconnect: Power Seat Motor C363 .
Measure the resistance between:

DSM C341B-22, circuit CPS05 (BU/WH), harness side and ground.

DSM C341B-10, circuit CPS04 (YE/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

J16 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND

Measure the resistance between:

DSM C341B-9, circuit CPS06 (GN/WH), harness side and ground.

DSM C341B-12, circuit CPS01 (GN/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to J18 .

No
GO to J17 .

J17 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND

Disconnect: Power Seat Motor C362 .
Measure the resistance between:

DSM C341B-9, circuit CPS06 (GN/WH), harness side and ground.

DSM C341B-12, circuit CPS01 (GN/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new front seat track motor. REFER to Seat Track Motor — Front in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J18 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND

Measure the resistance between:

DSM C341B-13, circuit CPS07 (GY/BN), harness side and ground.

DSM C341B-21, circuit CPS08 (VT/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

J19 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND

Disconnect: Driver Power Seat Recliner Motor C3187 .
Measure the resistance between:

DSM C341B-13, circuit CPS07 (GY/BN), harness side and ground.

DSM C341B-21, circuit CPS08 (VT/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new driver seat recliner motor. REFER to Seat Recliner Motor — Front in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

J20 CHECK THE FRONT HEIGHT MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Front Height Motor C382 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Enter the following diagnostic mode on the scan tool: DataLogger — DSM — PIDs .

Front Motor Up (FRONT_UP)
Front Motor Down (FRONT_DWN)

NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated.
Measure the voltage between front height motor C382-2, circuit CPS03 (VT/GY) and C382-1, circuit CPS02 (GY/YE), harness side while using DSM active commands front motor up and front motor down, ON and OFF.

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?

J21 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DSM C341B .
Ignition ON.
Measure the voltage between:

DSM C341B-23, circuit CPS03 (VT/GY), harness side and ground.

DSM C341B-11, circuit CPS02 (GY/YE), harness side and ground.

Is voltage present on either circuit?

J22 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN

Ignition OFF.
Measure the resistance between:

DSM C341B-23, circuit CPS03 (VT/GY), harness side and front height motor C382-2, circuit CPS03 (VT/GY), harness side.

DSM C341B-11, circuit CPS02 (GY/YE), harness side and front height motor C382-1, circuit CPS02 (GY/YE), harness side.

Are the resistances less than 3 ohms?

J23 CHECK THE REAR HEIGHT MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Rear Height Motor C363 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Enter the following diagnostic mode on the scan tool: DataLogger — DSM PIDs .

Rear Motor Up (REAR_UP)
Rear Motor Down (REAR_DWN)

NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated.
Measure the voltage between rear height motor C363-1, circuit CPS05 (BU/WH), harness side and C363-5, circuit CPS04 (YE/OG), harness side while using active commands rear motor up and rear motor down, ON and OFF.

Is the voltage greater than 11 volts when commanded ON in both directions and no voltage present when commanded OFF?

J24 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DSM C341B .
Ignition ON.
Measure the voltage between:

DSM C341B-22, circuit CPS05 (BU/WH), harness side and ground.

DSM C341B-10, circuit CPS04 (YE/OG), harness side and ground.

Is voltage present on either circuit?

J25 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN

Ignition OFF.
Measure the resistance between:

DSM C341B-22, circuit CPS05 (BU/WH), harness side and rear height motor C363-1, circuit CPS05 (BU/WH), harness side.

DSM C341B-10, circuit CPS04 (YE/OG), harness side and rear height motor C363-5, circuit CPS04 (YE/OG), harness side.

Are the resistances less than 3 ohms?

J26 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Horizontal Motor C362 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Enter the following diagnostic mode on the scan tool: DataLogger — DSM PIDs .

Horizontal Motor Forward (HORZ_FWD)
Horizontal Motor Backward (HORZ_BWD)

NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated.
Measure the voltage between power seat motor C362-1, circuit CPS01 (GN/BU) and C362-2, circuit CPS06 (GN/WH), harness side while using the scan tool to operate DSM active commands horizontal motor forward and horizontal motor backward, ON and OFF.

Is the voltage greater than 11 volts when commanded ON in both directions and no voltage present when commanded OFF?

J27 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DSM C341B .
Ignition ON.
Measure the voltage between:

DSM C341B-9, circuit CPS06 (GN/WH), harness side and ground.

DSM C341B-12, circuit CPS01 (GN/BU), harness side and ground.

Is voltage present on either circuit?

Yes
REPAIR the circuit(s). CLEAR the DTCs. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
GO to J28 .

J28 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN

Ignition OFF.
Measure the resistance between:

DSM C341B-9, circuit CPS06 (GN/WH), harness side and horizontal motor C362-2, circuit CPS06 (GN/WH), harness side.

DSM C341B-12, circuit CPS01 (GN/BU), harness side and horizontal motor C362-1, circuit CPS01 (GN/BU), harness side.

Are the resistances less than 3 ohms?

J29 CHECK VOLTAGE AT THE RECLINER MOTOR USING DSM RECLINER MOTOR PIDs

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Driver Seat Power Recliner Motor C3187 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Enter the following diagnostic mode on the scan tool: DataLogger — DSM .

Recline Motor Forward (RECL_FWD)
Recline Motor Backward (RECL_BWD)

NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated.
Measure the voltage between driver seat power recliner motor C3187-1, circuit CPS07 (GY/BN) and C3187-3, circuit CPS08 (VT/OG), harness side while using the scan tool to operate the DSM active commands recline motor forward and recline motor backward, ON and OFF.

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?

J30 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DSM C341B .
Ignition ON.
Measure voltage between:

DSM C341B-13, circuit CPS07 (GY/BN), harness side and ground.

DSM C341B-21, circuit CPS08 (VT/OG), harness side and ground.

Is voltage present on either circuit?

J31 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN

Ignition OFF.
Measure the resistance between:

DSM C341B-13, circuit CPS07 (GY/BN), harness side and recliner power seat motor C3187-1, circuit CPS07 (GY/BN), harness side.

DSM C341B-21, circuit CPS08 (VT/OG), harness side and recliner power seat motor C3187-3, circuit CPS08 (VT/OG), harness side.

Are the resistances less than 3 ohms?

Pinpoint Test K: The Memory Seat Does Not Operate Correctly — Does Not Operate Using the Memory SET Switch

Refer to Wiring Diagrams Cell 123 , Memory Seats for schematic and connector information.

Normal Operation

Each motor in the memory seat track and recliner mechanism contains a Hall-effect position sensor. The Driver Seat Module (DSM) supplies a voltage signal to each sensor. Each position sensor sends a signal pulse back to the DSM to monitor the position of the power seat and seat backrest. The DSM stores the sensor position data when a SET command is received and uses this information to return the seat to the stored position when a recall command is received.

The memory SET switch is supplied a ground circuit. When SET button 1 or 2 is pressed, the memory SET switch supplies ground to the Driver Door Module (DDM) input circuit. The DDM communicates a memory SET command to the DSM on the Medium Speed Controller Area Network (MS-CAN). The DSM then supplies voltage and ground to the power seat track motors and power recliner motor to move the seat to the stored position. For information on programming memory positions or recalling a stored memory position, refer to Memory Position Programming in this section.

The following pinpoint test diagnoses a memory seat that does not operate correctly using the memory SET switch. If the memory seat does not move in all directions using the seat control switch, GO to Pinpoint Test J .

DTC Description	Fault Trigger Conditions
B1534 — Memory 1 Switch Circuit Short to Ground B1538 — Memory 2 Switch Circuit Short to Ground	If any activity is sensed on the switch input circuit during the Driver Door Module (DDM) self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
B1663 — Seat Driver Front Up/Down Motor Stalled B1664 — Seat Driver Rear Up/Down Motor Stalled B1665 — Seat Driver Forward/Backward Motor Stalled	During self-test the DSM attempts to operate the seat track motors and uses the motor position sensor to monitor movement. If no motor movement is sensed, a DTC is set. The DSM will retry motor operation on the next activation of the seat control switch. If no movement continues to be monitored after 250 milliseconds, the DSM disables the output.
B1666 — Seat Driver Recline Motor Stalled	During self-test the DSM attempts to operate the recliner motor and uses the recliner motor position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM will retry motor operation on the next activation of the seat control switch. If no motor movement is still monitored after 250 milliseconds, the DSM disables the output.
B1952 — Seat Rear Up/Down Position Feedback Circuit Short to Battery B1956 — Seat Front Up/Down Position Feedback Circuit Short to Battery B1960 — Seat Recline Forward/Backward Position Feedback Circuit Short to Battery B1964 — Seat Horizontal Forward/Rearward Position Feedback Circuit Short to Battery	If a short to voltage condition is present on the affected motor position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in one second increments.
B1953 — Seat Rear Up/Down Position Feedback Circuit Short to Ground B1957 — Seat Front Up/Down Position Feedback Circuit Short to Ground B1961 — Seat Recline Forward/Backward Position Feedback Circuit Short to Ground B1965 — Seat Horizontal Forward/Rearward Position Feedback Circuit Short to Ground	If a short to ground or open condition is present on the affected motor position sensor (Hall effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in one second increments.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Memory SET switch
Missing status information — MS-CAN communication bus messages:
- ignition key status
- gear selector position
Horizontal seat track motor
Memory seat track assembly
Seat recliner motor
DDM
DSM

PINPOINT TEST K: THE MEMORY SEAT DOES NOT OPERATE CORRECTLY — DOES NOT OPERATE USING THE MEMORY SET SWITCH

NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.

NOTE: Verify the PID(s) states agree with the ignition and transmission gear selector in all positions before proceeding with memory seat diagnosis.

Test Step

Result / Action to Take

K1 CHECK PCM TRANSMISSION RANGE (TR) PID STATES

Enter the following diagnostic mode on the scan tool: DataLogger — PCM PID: TR .
Operate the transmission gear selector in all positions while monitoring the PCM PID TR states.
Do the PID states agree with the selected positions?

Yes
GO to K2 .

No
To diagnose a transmission gear selector (PRNDL) status concern, REFER to Section 307-01 .

K2 CHECK DDM IGNITION KEY STATUS (KEYST) PID STATES

Enter the following diagnostic mode on the scan tool: DataLogger — DDM PID: KEYST .
Operate the ignition while monitoring the DDM PID KEYST states.
Do the PID states agree?

Yes
GO to K3 .

No
To diagnose an ignition status concern, REFER to Section 211-05 .

K3 RETRIEVE THE DSM DTCs

Operate the memory seat and memory mirrors in all directions through the full range of travel.
Enter the following diagnostic mode on the scan tool: Self Test — DSM .
Enter the following diagnostic mode on the scan tool: Self Test — DDM .
Are any DSM or DDM DTCs retrieved?

Yes
If DTCs B1952, B1956, B1960 and B1964 are all retrieved, GO to K10 .

If DTCs B1953, B1957, B1961 and B1965 are all retrieved, GO to K10 .

If DTC B1534 or B1538, GO to K5 .

If DTC B1956, B1957 or B1663, GO to K11 .

If DTC B1952, B1953 or B1664, GO to K14 .

If DTC B1665, B1964 or B1965, GO to K17 .

If DTC B1960, B1961, or B1666, GO to K20 .

If DTC B1342, INSTALL a new . REFER to Driver Seat Module (DSM) in this section. CLEAR the DTCs. REPEAT the self-test.

For any other DTCs, REFER to the Driver Seat Module (DSM) DTC Chart.

For any other Driver Door Module (DDM) DTCs, REFER to the Driver Door Module (DDM) DTC Chart.

No
GO to K4 .

K4 MONITOR DSM PIDs AND CHECK FOR CORRECT MEMORY SET SWITCH INPUTS

Enter the following diagnostic mode on the scan tool: DataLogger — DSM PIDs .

Memory 1 recall switch status (MEM_1)
Memory 2 recall switch status (MEM_2)

Monitor the DSM PIDs while activating the memory recall 1 and recall 2 buttons.
Do the PID values agree with the switch button positions?

Yes
GO to K10 .

No
GO to K5 .

K5 CHECK THE MEMORY SET SWITCH

Ignition OFF.
Disconnect: Memory SET Switch C503 .
Measure the resistance between the memory SET switch pins, component side, while pressing the indicated switch buttons and compare the results to the table.

Memory Switch Button	Pins	Ohms
Memory Switch 1	2 and 7	Less than 20
Memory Switch 2	2 and 3	Less than 20

Is the resistance less than 20 ohms with the switch buttons depressed and greater than 10,000 ohms with the switch buttons released?

Yes
GO to K6 .

No
INSTALL a new memory SET switch. REFER to Memory Set Switch in this section.

CLEAR the DTCs. REPEAT the self-test.

K6 CHECK THE MEMORY SWITCH GROUND CIRCUIT FOR AN OPEN

Measure the resistance between memory SET switch C503-2, circuit GD233 (BK), harness side and ground.

Is the resistance less than 3 ohms?

Yes
GO to K7 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

K7 CHECK CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DDM C501B .
Ignition ON.
Measure the voltage between memory SET switch C503, harness side and ground using the following chart.

Connector	Circuit
C503-7	CPS15 (VT/WH)
C503-3	CPS16 (YE)

Is any voltage present?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

No
GO to K8 .

K8 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between SET switch C503, harness side and ground using the following chart.

Connector	Circuit
C503-7	CPS15 (VT/WH)
C503-3	CPS16 (YE)

Are the resistances greater than 10,000 ohms?

Yes
GO to K9 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

K9 CHECK MEMORY SET SWITCH CIRCUITS FOR AN OPEN

Measure the resistance between memory SET switch C503 and DDM C501B, using the following chart.

DDM	Circuit	Memory SET Switch
C501B-17	CPS16 (YE)	C503-3
C501B-16	CPS15 (VT/WH)	C503-7

Are the resistances less than 3 ohms?

Yes
INSTALL a new . REFER to Section 501-14A or Section 501-14B . CLEAR the DTCs. REPEAT the self-test.

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

K10 MONITOR THE DSM PIDs

Enter the following diagnostic mode on the scan tool: DataLogger — DSM PIDs .

Driver Power Seat Front Up/Down Sense (SFNT_MT)
Driver Power Seat Forward/Backward Sense (SFWD_MT)
Driver Power Seat Recline Sense (SRCL_MT)
Driver Power Seat Rear Up/Down Sense (SREARMT)

Using the switch, operate the memory seat in all directions through the full range of travel while monitoring the following DSM PIDs:
Does each PID indicate the sensor is operational throughout each associated motor full range of travel?

Yes
INSTALL a new . REFER to Driver Seat Module (DSM) in this section. CLEAR the DTCs. REPEAT the self-test.

No
If front up/down position sensor PID value indicates not present, GO to K11 .

If rear up/down position sensor PID value indicates not present, GO to K14 .

If forward/rearward position sensor PID value indicates not present, GO to K17 .

If recline position sensor PID value indicates not present, GO to K17 .

K11 CHECK FRONT HEIGHT MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: DSM C341B .
Disconnect: Front Height Motor C382 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure the voltage between:

front height motor C382-4, circuit VPS10 (BU/GN), harness side and ground.

front height motor C382-3, circuit RPS13 (GN/OG), harness side and ground.

Is any voltage present?

K12 CHECK FRONT HEIGHT MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

front height motor C382-4, circuit VPS10 (BU/GN), harness side and ground.

front height motor C382-3, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to K13 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

K13 CHECK THE FRONT HEIGHT MOTOR SENSOR CIRCUITS FOR AN OPEN

Measure the resistance between:

front height motor C382-4, circuit VPS10 (BU/GN), harness side and DSM C341B-4, circuit VPS10 (BU/GN), harness side.

front height motor C382-3, circuit RPS13 (GN/OG), harness side and DSM C341B-8, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 3 ohms?

K14 CHECK THE REAR HEIGHT MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: DSM C341B .
Disconnect: Rear Height Motor C363 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure the voltage between:

rear height motor C363-4, circuit VPS11 (GN/BN), harness side and ground.

rear height motor C363-2, circuit RPS13 (GN/OG), harness side and ground.

Is any voltage present?

K15 CHECK THE REAR HEIGHT MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

rear height motor C363-4, circuit VPS11 (GN/BN), harness side and ground.

rear height motor C363-2, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to K16 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

K16 CHECK THE REAR HEIGHT MOTOR SENSOR CIRCUITS FOR AN OPEN

Measure the resistance between:

rear height motor C363-4, circuit VPS11 (GN/BN), harness side and DSM C341B-3, circuit VPS11 (GN/BN), harness side.

rear height motor C363-2, circuit RPS13 (GN/OG), harness side and DSM C341B-8, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 3 ohms?

K17 CHECK THE HORIZONTAL MOTOR FORWARD SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: DSM C341B .
Disconnect: Horizontal Motor C362 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure the voltage between:

horizontal motor C362-4, circuit VPS09 (BN/BU), harness side and ground.

horizontal motor C362-3, circuit RPS13 (GN/OG), harness side and ground.

Is any voltage present?

K18 CHECK THE HORIZONTAL MOTOR FORWARD SENSOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

horizontal motor C362-4, circuit VPS09 (BN/BU), harness side and ground.

horizontal motor C362-3, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to K19 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

K19 CHECK THE HORIZONTAL MOTOR FORWARD SENSOR CIRCUITS FOR AN OPEN

Measure the resistance between:

horizontal motor C362-4, circuit VPS09 (BN/BU), harness side and DSM C341B-14, circuit VPS09 (BN/BU), harness side.

horizontal motor C362-3, circuit RPS13 (GN/OG), harness side and DSM C341B-8, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 3 ohms?

K20 CHECK THE RECLINER MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: DSM C341B .
Disconnect: Recliner Motor C3187 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure the voltage between:

recliner motor C3187-2, circuit VPS12 (GY/OG), harness side and ground.

recliner motor C3187-4, circuit RPS13 (GN/OG), harness side and ground.

Is any voltage present?

K21 CHECK THE RECLINER MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

recliner motor C3187-2, circuit VPS12 (GY/OG), harness side and ground.

recliner motor C3187-4, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to K22 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

K22 CHECK THE RECLINER MOTOR SENSOR CIRCUITS FOR AN OPEN

Measure the resistance between:

recliner motor C3187-2, circuit VPS12 (GY/OG), harness side and DSM C341B-20, circuit VPS12 (GY/OG), harness side.

recliner motor C3187-4, circuit RPS13 (GN/OG), harness side and DSM C341B-8, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 3 ohms?

Yes
INSTALL a new driver seat recliner motor. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

Pinpoint Test L: Easy Exit/Easy Entry is Inoperative/Does Not Operate Correctly

Normal Operation

The Driver Seat Module (DSM) receives a key out command over the Medium Speed Controller Area Network (MS-CAN) communication network and powers the driver seat rearward about 51 mm (2 in).

This pinpoint test is intended to diagnose the following:

Easy entry/exit feature is not enabled
Missing status information (Controller Area Network (CAN) communication bus messages):
- key-in-ignition status
- gear selector position
Wiring, terminals or connectors
Key-in-ignition switch
Start/stop switch (if equipped)
DSM

PINPOINT TEST L: EASY EXIT/EASY ENTRY IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.

NOTE: The transmission gear selector must be in PARK and either the key removed (without Intelligent Access) or the ignition OFF (with Intelligent Access) for the easy entry/exit feature to function.

NOTE: If a new DSM is installed, the driver seat must be operated in all directions through the full range of travel to avoid a premature stopping point occurrence after the vehicle is returned to the customer.

NOTE: Make sure all memory seat DTC and symptom based faults are corrected before proceeding with easy entry/exit diagnosis. Verify the PID(s) states agree with the ignition and transmission gear selector in all positions before proceeding with easy entry/exit diagnosis.

Test Step	Result / Action to Take
L1 CHECK FOR EASY ENTRY FEATURE ENABLE AND DRIVER POWER SEAT OPERATION
Ignition ON. Check the message center to verify the EASY ENTRY feature is enabled. Select the EASY ENTRY feature using the SETUP button. If enabled, ON should be displayed. If not, select ON using the RESET button. Using the seat control switch, verify the driver power seat operates fully forward and rearward. Is the EASY ENTRY feature enabled and the seat operating horizontally using the seat control switch?	Yes RE-POSITION the seat at least 51 mm (2 in) from its rear stopping point and GO to L2 . No If disabled, ENABLE the easy entry/exit feature. TEST the system for normal operation. If OK, INSTRUCT the customer on correct feature operation. If the seat does not move horizontally using the seat control switch, GO to Pinpoint Test K .
L2 CHECK THE DSM FOR DTCs
Connect the scan tool. Enter the following diagnostic mode on the scan tool: Self Test — DSM . Are any DSM DTCs retrieved during self-test?	Yes REFER to the Driver Seat Module (DSM) DTC Chart. No GO to L3 .
L3 CHECK THE TRANSMISSION RANGE (TR) PID
Enter the following diagnostic mode on the scan tool: DataLogger/PCM PID: Transmission Range (TR) . Monitor the PCM PID TR value with the transmission gear selector in PARK. Does the PID state agree with the selected transmission gear PARK position?	Yes GO to L4 . No To diagnose a transmission gear selector status concern, REFER to Section 307-01 .
L4 CHECK THE DSM FOR CORRECT IGNITION SWITCH POSITION (IGN_SW) PID STATES
Enter the following diagnostic mode on the scan tool: DataLogger/ DSM PID: Ignition Switch (IGN_SW) . Operate the ignition while monitoring the DSM IGN_SW PID states. For vehicles equipped with an ignition lock cylinder and key, insert and remove the ignition key from the ignition lock cylinder. For vehicles equipped with passive entry/passive start, push the ignition button on and off. Does the PID states agree?	Yes INSTALL a new DSM . REFER to Driver Seat Module (DSM) in this section. CLEAR the DTCs. REPEAT the self-test. No To diagnose the key-in-ignition warning switch fault, REFER to Section 413-01 .

Pinpoint Test N: The Heated Seat is Inoperative/Does Not Operate Correctly — Driver

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

If a fault is detected by the HVAC module, the module stops supplying voltage to that individual left or right seat that the fault was detected on until the ignition is turned OFF and then ON.

DTC Description	Fault Trigger Conditions
B1034:11 — Left Front Seat Heater Element: Circuit Short To Ground	Sets when the HVAC module senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1034:13 — Left Front Seat Heater Element: Circuit Open	Sets when the HVAC module senses the left front heater element current draw is less than a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1038:11 — Left Front Seat Heater Sensor: Circuit Short To Ground	Sets when the HVAC module senses the left front heater sensor voltage is out-of-range low. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1038:12 — Left Front Seat Heater Sensor: Circuit Short To Battery	Sets when the HVAC module senses the left front heater sensor voltage is out-of-range high. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
FDIM
APIM
FCIM
Heater mat
HVAC module

PINPOINT TEST N: THE HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — DRIVER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
N1 CHECK THE HVAC MODULE DRIVER HEATED SEAT POWER FEED FOR VOLTAGE
Ignition OFF. Disconnect: HVAC Module C228B . Measure the voltage between HVAC module C228B-1, circuit SBB29 (GY/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to N2 . No VERIFY BJB fuse 29 (20A) is OK. If the fuse is OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. TEST the system for normal operation.
N2 CHECK THE HVAC MODULE DTCs
Ignition OFF. Connect: HVAC Module C228B . Start the engine. Attempt to activate the driver heated seat. Enter the following diagnostic mode on the scan tool: Self Test — HVAC Module . Are any DTCs retrieved?	Yes For DTCs B1034:11 or B1034:13, GO to N4 . For DTCs B1038:11 or B1038:12, GO to N5 . For any other HVAC module DTCs, REFER to the HVAC Module DTC Chart in this section. No GO to N3 .
N3 CHECK THE TOUCHSCREEN CONTROLS OPERATION
Start the engine. Select each audio and climate control function using the touchscreen controls. Do all touchscreen controls operate correctly?	Yes GO to N13 . No REFER to Section 415-00B or Section 415-00C to diagnose the inoperative touchscreen.
N4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: HVAC Module C228B . Disconnect: Driver Seat Cushion Heater Mat C364 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the resistance between: driver seat cushion heater mat C364-1, circuit CHS02 (YE/BU), harness side and ground. driver seat cushion heater mat C364-1, circuit CHS02 (YE/BU), harness side and HVAC module C228B-16, circuit CHS11 (VT/GN), harness side. Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?	Yes GO to N8 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N5 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: HVAC Module C228B . Disconnect: Driver Seat Cushion Heater Mat C364 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the resistance between: driver seat cushion heater mat C364-2, circuit VHS26 (VT), harness side and ground. driver seat cushion heater mat C364-2, circuit VHS26 (VT), harness side and HVAC module C228B-30, circuit VHS26 (VT), harness side. Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?	Yes GO to N6 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N6 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
Disconnect: HVAC Module C228A . Measure the resistance between: driver seat cushion heater mat C364-3, circuit RHS05 (YE/VT), harness side and ground. driver seat cushion heater mat C364-3, circuit RHS05 (YE/VT), harness side and HVAC module C228A-23, circuit RH111 (GY/BU), harness side. Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?	Yes GO to N7 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
Ignition ON. Measure the voltage between driver seat cushion heater mat C364-2, circuit VHS26 (VT), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to N12 .
N8 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
Disconnect: Driver Seat Backrest Heater Mat C365 . Measure the resistance between driver seat backrest heater mat C365-2, circuit GD904 (BK/BU), harness side and ground. Is the resistance less than 0.5 ohms?	Yes GO to N9 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N9 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
Measure the resistance between driver seat cushion heater mat C364 pins 1 and 4, component side; and between driver seat cushion heater mat C364 pin 1, component side and ground. Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?	Yes GO to N10 . No INSTALL a new driver seat cushion heater mat. REFER to Seat Cushion Heater Mat — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N10 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
Measure the resistance between driver seat backrest heater mat C365 pins 1 and 2, component side; and between driver seat backrest heater mat C365 pin 2, component side and ground. Is the resistance between 0.6 and 2 ohms between pins 1 and 2: and greater than 10,000 ohms between pin 2 and ground?	Yes GO to N11 . No INSTALL a new driver front seat backrest heater mat. REFER to Seat Backrest Heater Mat — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N11 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
Measure the resistance between: seat cushion heater mat C364-4, circuit CHS01 (GY/VT), harness side and seat backrest heater mat C365-1, circuit CHS01 (GY/VT) harness side. seat cushion heater mat C364-4, circuit CHS01 (GY/VT), harness side and ground. Is the resistance less than 3 ohms between C364-4 and C365-1; and greater than 10,000 ohms between C364-4 and ground?	Yes GO to N13 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N12 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
Ignition OFF. Measure the resistance between heated seat cushion C364 pins 2 and 3, component side; and between heated seat cushion C364 pin 2, component side and ground. Is the resistance between 300 ohms and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?	Yes GO to N13 . No INSTALL a new driver seat cushion heater mat. REFER to Seat Cushion Heater Mat — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
N13 CHECK FOR CORRECT HVAC MODULE OPERATION
Disconnect and inpsect the HVAC module connectors. Repair: corrosion (Install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Connect the HVAC module connectors. Make sure they seat and latch correctly. Connect: Driver Seat Cushion Heater Mat C364 (if previously disconnected). Connect: Driver Seat Backrest Heater Mat C365 (if previously disconnected). Operate the system and determine if the concern is still present. Is the concern still present?	Yes CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern, INSTALL a new HVAC module. REFER to Section 412-01 . TEST the system for normal operation. If the SRS was previously depowered, DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues. If the SRS was previously depowered, DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test O: The Heated Seat is Inoperative/Does Not Operate Correctly — Front Passenger

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

If a fault is detected by the HVAC module, the module stops supplying voltage to that individual left or right seat that the fault was detected on until the ignition is turned OFF and then ON.

DTC Description	Fault Trigger Conditions
B1036:11 — Right Front Seat Heater Element: Circuit Short To Ground	Sets when the HVAC module senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1036:13 — Right Front Seat Heater Element: Circuit Open	Sets when the HVAC module senses the right front heater element current draw is less than a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B103A:11 — Right Front Seat Heater Sensor: Circuit Short To Ground	Sets when the HVAC module senses the right front heater sensor voltage is out-of-range low. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B103A:12 — Right Front Seat Heater Sensor: Circuit Short To Battery	Sets when the HVAC module senses the right front heater sensor voltage is out-of-range high. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
FDIM
APIM
FCIM
Heater mat
HVAC module

PINPOINT TEST O: THE HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — FRONT PASSENGER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
O1 CHECK THE HVAC MODULE DRIVER HEATED SEAT POWER FEED FOR VOLTAGE
Ignition OFF. Disconnect: HVAC Module C228B . Measure the voltage between HVAC module C228B-2, circuit SBB29 (GY/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to O2 . No VERIFY BJB fuse 29 (20A) is OK. If the fuse is OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. TEST the system for normal operation.
O2 CHECK THE HVAC MODULE DTCs
Ignition OFF. Connect: HVAC Module C228B . Start the engine. Attempt to activate the passenger heated seat. Enter the following diagnostic mode on the scan tool: Self Test — HVAC Module . Are any DTCs retrieved?	Yes For DTCs B10364:11 or B1036:13, GO to O4 . For DTCs B103A:11 or B103A:12, GO to O5 . For any other HVAC module DTCs, REFER to the HVAC Module DTC Chart in this section. No GO to O3 .
O3 CHECK THE TOUCHSCREEN CONTROLS OPERATION
Start the engine. Select each audio and climate control function using the touchscreen controls. Do all touchscreen controls operate correctly?	Yes GO to O13 . No REFER to Section 415-00B or Section 415-00C to diagnose the inoperative touchscreen.
O4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: HVAC Module C228B . Disconnect: Passenger Seat Cushion Heater Mat C334 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the resistance between: passenger seat cushion heater mat C334-1, circuit CHS02 (YE/BU), harness side and ground. passenger seat cushion heater mat C334-1, circuit CHS02 (YE/BU), harness side and HVAC module C228B-17, circuit CHS12 (YE/GN), harness side. Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?	Yes GO to O8 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O5 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: HVAC Module C228B . Disconnect: Passenger Seat Cushion Heater Mat C334 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure the resistance between: passenger seat cushion heater mat C334-2, circuit VHS26 (VT), harness side and ground. passenger seat cushion heater mat C334-2, circuit VHS26 (VT), harness side and HVAC module C228B-15, circuit VHS27 (WH), harness side. Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?	Yes GO to O6 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O6 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
Disconnect: HVAC Module C228A . Measure the resistance between: passenger seat cushion heater mat C334-3, circuit RHS05 (YE/VT), harness side and ground. passenger seat cushion heater mat C334-3, circuit RHS05 (YE/VT), harness side and HVAC module C228A-23, circuit RH111 (GY/BU), harness side. Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?	Yes GO to O7 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
Ignition ON. Measure the voltage between the following passenger seat cushion heater mat C334-2, circuit VHS26 (VT), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to O12 .
O8 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
Disconnect: Passenger Seat Backrest Heater Mat C335 . Measure the resistance between passenger seat backrest heater mat C335-2, circuit GD904 (BK/BU), harness side and ground. Is the resistance less than 0.5 ohms?	Yes GO to O9 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O9 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
Measure the resistance between passenger seat cushion heater mat C334 pins 1 and 4, component side; and between passenger seat cushion heater mat C334 pin 1, component side and ground. Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?	Yes GO to O10 . No INSTALL a new passenger seat cushion heater mat. REFER to Seat Cushion Heater Mat — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O10 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
Measure the resistance between passenger seat backrest heater mat C335 pins 1 and 2, component side; and between passenger seat backrest heater mat C335 pin 2, component side and ground. Is the resistance between 0.6 and 2 ohms between pins 1 and 2: and greater than 10,000 ohms between pin 2 and ground?	Yes GO to O11 . No INSTALL a new passenger front seat backrest heater mat. REFER to Seat Backrest Heater Mat — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O11 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
Measure the resistance between: passenger seat cushion heater mat C334-4, circuit CHS01 (GY/VT), harness side and seat backrest heater mat C335-1, circuit CHS01 (GY/VT) harness side. passenger seat cushion heater mat C334-4, circuit CHS01 (GY/VT), harness side and ground. Is the resistance less than 3 ohms between C334-4 and C335-1, and greater than 10,000 ohms between C334-4 and ground?	Yes GO to O13 . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O12 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
Ignition OFF. Measure the resistance between passenger heated seat cushion C334 pins 2 and 3, component side; and between heated seat cushion C334 pin 2, component side and ground. Is the resistance between 300 ohms and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?	Yes GO to O13 . No INSTALL a new passenger seat cushion heater mat. REFER to Seat Cushion Heater Mat — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
O13 CHECK FOR CORRECT HVAC MODULE OPERATION
Disconnect and inpsect the HVAC module connectors. Repair: corrosion (Install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Connect the HVAC module connectors. Make sure they seat and latch correctly. Connect: Passenger Seat Cushion Heater Mat C334 (if previously disconnected). Connect: Passenger Seat Backrest Heater Mat C335 (if previously disconnected). Operate the system and determine if the concern is still present. Is the concern still present?	Yes CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern, INSTALL a new HVAC module. REFER to Section 412-01 . TEST the system for normal operation. If the SRS was previously depowered, DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues. If the SRS was previously depowered, DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test R: The Power Seat is Inoperative/Does Not Operate Correctly — Second Row, Power-Fold

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

Each second row power-fold seat receives battery voltage from the Body Control Module (BCM) at all times. The power-fold seat motors contain internal switching that operate the motor until it moves to the reset position and turns off. The demand lighting/battery saver voltage output circuit from the BCM provides the control signal voltage to each seat control switch. The seat control switches have momentary contacts. When the seat control switch is pressed and held for at least one second, switched voltage is supplied to the power-fold seat motor control circuits to initiate a pull and release cycle. The power-fold seat motor retracts a release cable connected to the same mechanical release lever in the seat latch mechanism as the manual release pull strap. When the power-fold seat motor is cycled, the pull strap retraction and release/reset is noticeable.

This pinpoint test is intended to diagnose the following:

Fuse(s)
Wiring, terminals or connectors
Power-fold switch
Power-fold seat actuator
Seat recliner
Seat track
Gas assist strut

PINPOINT TEST R: THE POWER SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — SECOND ROW, POWER-FOLD

NOTE: Make sure the second row power-fold seats manually release and latch before troubleshooting the electrical system.

Test Step	Result / Action to Take
R1 CHECK MANUAL RELEASE OPERATION OF THE SEAT BACKREST
NOTE: Before performing this step, make sure there are no aftermarket accessories or foreign objects that may affect the seat not to fold properly. Pull the release strap of the affected seat and check the manual release operation of the backrest. Does the backrest unlatch and fold forward onto the seat cushion properly?	Yes GO to R2 . No If the backrest does not unlatch, DISASSEMBLE the seat as necessary to CHECK the cables and cable mounting for disconnection. CHECK latch release mechanism and latch feet for binding or damage. REPAIR as needed. TEST the system for normal operation. If the backrest unlatches but does not fold forward onto the seat cushion properly, CHECK for aftermarket accessories or foreign objects that may be causing the binding condition. If OK, INSTALL a new seat recliner. REFER to Seat Recliner — Second Row, 40 Percent in this section. TEST the system for normal operation.
R2 CHECK MANUAL RELEASE OPERATION OF THE SEAT CUSHION WITH THE SEAT FULLY FORWARD
Position the seat cushion track to the fully forward position. Pull the release strap of the affected seat and check the manual release operation. Does the seat cushion lift and fold forward to the E-Z entry position properly without manual assistance?	Yes GO to R3 . No If the seat cushion does not unlatch, DISASSEMBLE the seat as necessary to CHECK the cables and cable mounting for disconnection. CHECK latch release mechanism and latch feet for binding or damage. REPAIR as needed. TEST the system for normal operation. If the seat cushion unlatches but does not lift and fold forward to the E-Z entry position properly, GO to R4 .
R3 CHECK MANUAL RELEASE OPERATION OF THE SEAT CUSHION WITH THE SEAT FULLY REARWARD
Position the seat cushion track to the fully rearward position. Pull the release strap of the affected seat and check the manual release operation. Does the seat cushion lift and fold forward to the E-Z entry position properly without manual assistance?	Yes GO to R5 . No GO to R4 .
R4 NEUTRALIZE THE SEAT TRACK AND MOUNTING BRACKETS
Loosen the affected seat track-to-floor fasteners. Move the seat track back and forth through the full horizontal range of motion. NOTE: Make sure not to lean or apply any lateral pressure on the seat assembly when tightening the seat track-to-floor fasteners. Doing so may cause a binding condition which may adversely affect the operation of the seat. Tighten the seat track-to-floor fasteners to specification. For additional information, refer to Seat — Second Row in this section. Does the seat cushion lift and fold forward to the E-Z entry position properly without manual assistance?	Yes The system is operating correctly at this time. Concern was caused due to binding condition within the seat track assembly. No INSTALL a new gas assist strut. TEST the system for normal operation. If concern is still present, INSTALL a new seat track assembly. REFER to Seat Track — Second Row, 40 Percent in this section. TEST the system for normal operation.
R5 CHECK THE INTERIOR DEMAND LIGHTING/ BATTERY SAVER OPERATION
Open any of the vehicle doors and check the operation of the map/reading lamps. Do the interior map/reading lamps operate?	Yes GO to R6 . No REFER to Section 417-02 to diagnose the inoperative demand lighting/ battery saver concern.
R6 CHECK FOR VOLTAGE TO THE POWER-FOLD SEAT MOTORS
Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. If equipped with inflatable safety belts, disconnect 2nd Row Safety Belt Inflator C3801 (LH) or C3645 (RH). To access the electrical connector(s): Remove 5 screws and the seat track inboard inner and outer covers. Detach the cushion cover front and inboard retainers. Lift the cushion cover and foam pad. Disconnect: LH Power-Fold Seat Motor C3345 or RH Power-Fold Seat Motor C3346 . Measure the voltage between LH power-fold seat motor C3345-1, circuit SBP02 (YE/RD), harness side and ground; or between RH power-fold seat motor C3346-1, circuit SBP02 (YE/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to R7 . No VERIFY BCM fuse 2 (15A) is OK. If the fuse is OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. TEST the system for normal operation. If equipped with inflatable safety belts, GO to R13 .
R7 CHECK FOR AN OPEN GROUND CIRCUIT
Measure the resistance between LH power-fold seat motor C3345-2, circuit GD349 (BK/GY), harness side and ground; or between RH power-fold seat motor C3346-2, circuit GD351 (BK/GN), harness side and ground. Is the resistance less than 3 ohms?	Yes GO to R8 . No REPAIR the circuit in question. TEST the system for normal operation. If equipped with inflatable safety belts, GO to R13 .
R8 CHECK FOR VOLTAGE FROM THE SEAT CONTROL SWITCH
NOTE: If the demand lighting/battery saver system has timed out, close and re-open any of the vehicle doors to activate the system before measuring the voltage. Press and hold the LH or RH seat control switch and measure the voltage between LH power-fold seat motor C3345-3, circuit CPS56 (GN/BN), harness side and ground; or between RH power-fold seat motor C3346-3, circuit CPS57 (GY/BN), harness side and ground. Is the voltage greater than 11 volts?	Yes INSTALL a new LH or RH power-fold seat motor. REFER to Power-Fold Seat Motor — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to R13 . No GO to R9 .
R9 CHECK THE SEAT CONTROL SWITCH FOR VOLTAGE
NOTE: If the demand lighting/ battery saver system has timed out, close and re-open any of the vehicle doors to activate the system before measuring the voltage. Disconnect: LH Seat Control Switch C3343 or RH Seat Control Switch C3344 . Measure the voltage between LH seat control switch C3343-3, circuit CLN09 (YE/GN), harness side and ground; or between RH seat control switch C3344-3, circuit CLN09 (YE/GN), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to R10 . No REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. TEST the system for normal operation. If equipped with inflatable safety belts, GO to R13 .
R10 CHECK THE SEAT CONTROL SWITCH
Measure the resistance between LH or RH seat control switch pins 3 and 4, component side, while pressing and releasing the seat control switch. Is the resistance less than 1 ohms with the switch pressed; and greater than 10,000 ohms with the switch released?	Yes GO to R11 . No INSTALL a new LH or RH seat control switch. REFER to Seat Control Switch — Second Row, Power-Fold . TEST the system for normal operation. If equipped with inflatable safety belts, GO to R13 .
R11 CHECK THE POWER-FOLD SEAT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
NOTE: If the demand lighting/ battery saver system has timed out, close and re-open any of the vehicle doors to activate the system before measuring the voltage. Ignition ON. Measure the voltage between LH seat control switch C3343-4, circuit CPS56 (GN/BN), harness side and ground; or between RH seat control switch C3344-4, circuit CPS57 (GY/BN), harness side and ground. Is any voltage present?	Yes REPAIR the affected circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to R13 . No GO to R12 .
R12 CHECK THE POWER-FOLD SEAT MOTOR CIRCUITS FOR AN OPEN
Ignition OFF. Measure the resistance between: LH seat control switch C3343-4, circuit CPS56 (GN/BN), harness side and LH power-fold seat motor C3345-3, circuit CPS56 (GN/BN), harness side; or between RH seat control switch C3344-4, circuit CPS57 (GY/BN), harness side and RH power-fold seat motor C3346-3, circuit CPS57 (GY/BN), harness side. Is the resistance less than 3 ohms?	Yes The system checks OK at this time. CHECK all connections are clean and fully connected. TEST the system for normal operation. REPEAT the pinpoint test if the seat does not release. If equipped with inflatable safety belts, GO to R13 . No REPAIR the circuit in question. TEST the system for normal operation. If equipped with inflatable safety belts, GO to R13 .
R13 CHECK FOR SRS DTCs
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: 2nd Row Safety Belt Inflator C3801 (LH) or C3645 (RH) . Ignition ON. Using a scan tool, clear the RCM DTCs. Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTCs retrieved during self-test?	Yes REFER to Section 501-20B for pinpoint test direction. No The repair is complete. RETURN the vehicle to the customer.

Pinpoint Test S: The Power Seat is Inoperative — Second Row, Power-Fold Seat Does Not Latch to the Floor

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

Each second row power-fold seat receives battery voltage from the Body Control Module (BCM) at all times. The power-fold seat motors contain internal switching that operate the motor until it moves to the reset position and turns off. The demand lighting/ battery saver voltage output circuit from the BCM provides the control signal voltage to each seat control switch. The seat control switches are momentary contact switches when pressed and held for at least one second supply switched voltage to the power-fold seat motor control circuit to initiate a pull and release cycle. The power-fold seat motor retracts a release cable connected to the same mechanical release lever in the seat latch mechanism as the manual release pull strap. When the power-fold seat motor is cycled, the pull strap retraction and release/reset is noticeable.

This pinpoint test is intended to diagnose the following:

Fuse
Wiring, terminals or connectors
Latch(es)
Release cable(s)
Latch release pull strap
Power-fold seat actuator
BCM

PINPOINT TEST S: THE POWER SEAT IS INOPERATIVE — SECOND ROW, POWER-FOLD SEAT DOES NOT LATCH TO THE FLOOR

Test Step	Result / Action to Take
S1 CHECK THE INTERIOR DEMAND LIGHTING/ BATTERY SAVER OPERATION
Open any of the vehicle doors and check the map/reading lamp operation. Check the electrical operation of the opposite seat release system to verify system voltage is present. Do the interior map/reading lamps operate correctly?	Yes If the opposite seat does not operate from the seat control switch, GO to S3 . Otherwise, GO to S2 . No REFER to Section 417-02 to diagnose the inoperative demand lighting/ battery saver concern.
S2 CHECK THE SEAT LATCH FEET FOR MANUAL MECHANICAL OPERATION
Inspect both latch feet on the affected seat to make sure neither of the latches are closed and manually release them from the pull strap if needed. Check the seat release pull strap is not binding and holding the latches in a released state. Inspect the release cables for kinks or damage causing the cable(s) to bind. Check the cables and cable mounting for disconnection. Is a mechanical concern found?	Yes DISASSEMBLE the seat as necessary to REPAIR the latch(es), cable(s) or release pull strap. TEST the system for normal operation. If the cause is not found, DETACH the power-fold release cable from the latch and RETEST the mechanical latch operation. If the latch(es) continue to be inoperative with the cable detached, INSTALL a new latch mechanism or latch foot/feet as needed. REASSEMBLE the seat and TEST for normal operation. If the seat latches and manually releases correctly with the power-fold seat motor cable disconnected, GO to S3 . No GO to S3 .
S3 CHECK FOR VOLTAGE TO THE POWER-FOLD SEAT MOTOR
Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. If equipped with inflatable safety belts, disconnect 2nd Row Safety Belt Inflator C3801 (LH) or C3645 (RH). To access the electrical connector(s): Remove 5 screws and the seat track inboard inner and outer covers. Detach the cushion cover front and inboard retainers. Lift the cushion cover and foam pad. Disconnect: LH Power-Fold Seat Motor C3345 or RH Power-Fold Seat Motor C3346 . Measure the voltage between LH power-fold seat motor C3345-1, circuit SBP02 (YE/RD), harness side and ground; or between RH power-fold seat motor C3346-1, circuit SBP02 (YE/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to S4 . No VERIFY BCM fuse 2 (15A) is OK. If the fuse is OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. TEST the system for normal operation. If equipped with inflatable safety belts, GO to S5 .
S4 CHECK FOR AN OPEN GROUND CIRCUIT
Measure the resistance between LH power-fold seat motor C3345-2, circuit GD349 (BK/GY), harness side and ground; or between RH power-fold seat motor C3346-2, circuit GD351 (BK/GN), harness side and ground. Is the resistance less than 3 ohms?	Yes INSTALL a new LH or RH power-fold seat motor. REFER to Power-Fold Seat Motor — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to S5 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to S5 .
S5 CHECK FOR SRS DTCs
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: 2nd Row Safety Belt Inflator C3801 (LH) or C3645 (RH) . Ignition ON. Using a scan tool, clear the RCM DTCs. Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTCs retrieved during self-test?	Yes REFER to Section 501-20B for pinpoint test direction. No The repair is complete. RETURN the vehicle to the customer.

Pinpoint Test T: The Heated Seats are Inoperative — Rear

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

When ignition voltage is supplied and the driver or passenger heated seat button on the auxiliary climate control assembly is pressed, a momentary ground signal is sent to the heated seat module to command the system on or off. Upon receiving a signal, the heated seat module decreases one setting (the sequence is high, low, off, high). The heated seat module monitors temperature sensors contained within the cushion heater mats on the left and right rear seats. The temperature sensors share a common return circuit to the heated seat module. If the temperature sensor return circuit opens (resistance greater than 300,000 ohms), the heated seat module disables the outputs to both seats. The system remains disabled until the circuit is repaired and the heated seat module is reset by cycling the ignition OFF and ON.

This pinpoint test is intended to diagnose the following:

Fuse(s)
Wiring, terminals or connectors
Heated seat module

PINPOINT TEST T: THE HEATED SEATS ARE INOPERATIVE — REAR

Test Step	Result / Action to Take
T1 CHECK THE VOLTAGE TO THE REAR HEATED SEAT MODULE
Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. If equipped with inflatable safety belts, disconnect 2nd Row Safety Belt Inflator C3801 (LH). To access the electrical connector: Remove 5 screws and the seat track inboard inner and outer covers. Detach the cushion cover front and inboard retainers. Lift the cushion cover and foam pad. Disconnect: Heated Seat Module C3304B . Ignition ON. Measure the voltage between: heated seat module C3304B-2, circuit CBP34 (VT/BN), harness side and ground. heated seat module C3304B-1, circuit SBB30 (BN/RD), harness side and ground. Are the voltages greater than 11 volts?	Yes GO to T2 . No VERIFY BJB fuse 30 (20A) and BCM fuse 34 (10A). If OK, REPAIR the affected circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. TEST the system for normal operation. If equipped with inflatable safety belts, GO to T7 .
T2 CHECK THE HEATED SEAT MODULE GROUND CIRCUIT FOR AN OPEN
Ignition OFF. Measure the resistance between heated seat module C3304B-5, circuit GD374 (BK/WH), harness side and ground. Is the resistance less than 3 ohms?	Yes GO to T3 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to T7 .
T3 CHECK TEMPERATURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
Disconnect: Heated Seat Module C3304A . Ignition ON. Measure the voltage between: heated seat module C3304A-3, circuit VHS42 (GN), harness side and ground. heated seat module C3304A-9 , circuit VHS45 (GY/BN), harness side and ground. Is any voltage present?	Yes REPAIR the affected circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to T7 . No GO to T4 .
T4 CHECK TEMPERATURE SENSOR CIRCUITS FOR A SHORT TO GROUND
Ignition OFF. Measure the resistance between: heated seat module C3304A-3, circuit VHS42 (GN), harness side and ground. heated seat module C3304A-9 , circuit VHS45 (GY/BN), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes GO to T5 . No REPAIR the affected circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to T7 .
T5 CHECK THE TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN
Measure the resistance between heated seat module C3304A-12, circuit RHS41 (GN/BN), harness side and left rear heated seat C3304A-3, circuit VHS42 (GN), harness side. Is the resistance between 300 and 300,000 ohms?	Yes GO to T6 . No REPAIR circuit RHS41 (GN/BN). TEST the system for normal operation. If equipped with inflatable safety belts, GO to T7 .
T6 CHECK THE AUXILIARY CLIMATE CONTROL ASSEMBLY OUTPUT
Connect: Heated Seat Module C3304A . Connect: Heated Seat Module C3304B . Ignition ON. NOTE: The following measurement must be taken by back-probing the heated seat module C3304A. NOTE: The voltage on circuit CHS47 (VT/GN) should drop momentarily when the LH rear heated seat control button is pressed. Measure the voltage between heated seat module C3304A-2, circuit CHS47 (VT/GN), harness side and ground by back-probing heated seat module C3304A-2. Press the LH rear heated seat control button on the auxiliary climate control assembly and note the voltage. Is the voltage greater than 11 volts before pressing the LH rear heated seat control button, then momentarily drops when the heated seat control button is pressed?	Yes INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to T7 . No If the voltage is greater than 11 volts but did not drop when the LH rear heated seat button was pressed, INSTALL a new rear auxiliary climate control assembly. REFER to Section 412-02 . If the voltage is less than 11 volts, INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to T7 .
T7 CHECK FOR SRS DTCs
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: 2nd Row Safety Belt Inflator C3801 (LH) . Ignition ON. Using a scan tool, clear the RCM DTCs. Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTCs retrieved during self-test?	Yes REFER to Section 501-20B for pinpoint test direction. No The repair is complete. RETURN the vehicle to the customer.

Pinpoint Test U: The Heated Seat is Inoperative/Does Not Operate Correctly — Left Rear

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The heated seat module receives constant battery voltage. When the ignition is on and the LH rear heated seat button on the auxiliary climate control assembly is pressed, a momentary ground signal is sent to the heated seat module on command circuit to turn the system on or off. Upon receiving a signal, the heated seat module decreases one setting (the sequence is high, low, off, high). The heated seat module supplies voltage to the cushion and backrest heater mats. The cushion and backrest heater mats are connected in series and operate together. Temperature is maintained by a temperature sensor contained within the cushion heater mat. The heated seat module supplies a reference voltage to the temperature sensor and monitors the signal to control current flow to the heater mats.

This pinpoint test is intended to diagnose the following:

Fuse(s)
Wiring, terminals or connectors
Heater mat
Auxiliary climate control assembly
Rear heated seat module

PINPOINT TEST U: THE HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — LEFT REAR

Test Step	Result / Action to Take
U1 CHECK THE VOLTAGE TO THE REAR HEATED SEAT MODULE
Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. If equipped with inflatable safety belts, disconnect 2nd Row Safety Belt Inflator C3801 (LH). To access the electrical connector: Remove 5 screws and the seat track inboard inner and outer covers. Detach the cushion cover front and inboard retainers. Lift the cushion cover and foam pad. Disconnect: Heated Seat Module C3304B . Measure the voltage between: heated seat module C3304B-1, circuit SBB30 (BN/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to U2 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U2 CHECK LEFT REAR HEATER MATS RESISTANCE AND HEATER CIRCUITS FOR AN OPEN
Measure the resistance between rear heated seat module C3304B-4, circuit CHS39 (GN/BU), harness side and ground. Is the resistance between 1.2 and 4 ohms?	Yes GO to U7 . No GO to U3 .
U3 CHECK LEFT REAR SEAT CUSHION HEATER CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Cushion Heater Mat C3167 . Measure the resistance between: heated seat module C3304B-4, circuit CHS39 (GN/BU), harness side and driver seat cushion heater mat C3167-1, circuit CHS39 (GN/BU), harness side. heated seat module C3304B-4, circuit CHS39 (GN/BU), harness side and ground. Is the resistance less than 3 ohms between heated seat module and cushion heater mat and greater than 10,000 ohms between the heated seat module and ground?	Yes GO to U4 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U4 CHECK LEFT REAR HEATER MATS GROUND CIRCUIT FOR AN OPEN
Disconnect: Backrest Heater Mat C3168 . Measure the resistance between left rear backrest heater mat C3168-2, circuit GD349 (BK/GY), harness side and ground. Is the resistance less than 3 ohms?	Yes GO to U5 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U5 CHECK LEFT REAR CUSHION HEATER MAT FOR AN OPEN
Measure the resistance between left rear cushion heater mat C3167 pins 1 and 4, component side. Is the resistance between 0.6 and 2 ohms?	Yes GO to U6 . No INSTALL a new left rear cushion heater mat. REFER to Seat Cushion Heater Mat — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U6 CHECK LEFT REAR BACKREST HEATER MAT FOR AN OPEN
Measure the resistance between left rear backrest heater C3168 pins 1 and 2, component side. Is the resistance between 0.6 and 2 ohms?	Yes REPAIR circuit CHS40 (GY/VT). TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 . No INSTALL a new rear seat backrest heater mat. REFER to Seat Backrest Heater Mat — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U7 CHECK TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
Disconnect: Heated Seat Module C3304A . Ignition ON. Measure the voltage between rear heated seat module C3304A-3, circuit VHS42 (GN), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 . No GO to U8 .
U8 CHECK HEATED SEAT TEMPERATURE SENSOR CIRCUITS FOR AN OPEN AND SHORT TO GROUND
Ignition OFF. Measure the resistance between: rear heated seat module C3304A-3, circuit VHS42 (GN), harness side and C3304A-12, circuit RHS41 (GN/BN), harness side. rear heated seat module C3304A-3, circuit VHS42 (GN), harness side and ground. Is the resistance greater than 300 and less than 300,000 ohms between C3304A-3 and C3304A-12 and greater than 10,000 ohms between C3304A-3 and ground?	Yes GO to U11 . No GO to U9 .
U9 CHECK HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Cushion Heater Mat C3167 . Measure the resistance between: rear heated seat module C3304A-3, circuit VHS42 (GN), harness side and rear seat cushion heater mat C3167-2, circuit VHS42 (GN), harness side. rear heated seat module C3304A-3, circuit VHS42 (GN), harness side and ground. Is the resistance less than 3 ohms between C3304A-3 and C3167-2, and greater than 10,000 ohms between C3304A-3 and ground?	Yes GO to U10 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U10 CHECK TEMPERATURE SENSOR FOR AN OPEN
Measure the resistance between rear heated seat cushion C3167 pin 2 and pin 3, component side. Is the resistance between 300 ohms and 300,000 ohms?	Yes REPAIR circuit RHS41 (GN/BN). TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 . No INSTALL a new rear seat cushion heater mat. REFER to Seat Cushion Heater Mat — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U11 CHECK HEATED SEAT MODULE COMMAND CIRCUIT FOR SHORT TO VOLTAGE
Disconnect: Auxiliary Climate Control Assembly C3198 . Ignition ON. Measure the voltage between heated seat module C3304A-2, circuit CHS47 (VT/GN), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 . No GO to U12 .
U12 CHECK HEATED SEAT MODULE COMMAND CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Measure the resistance between heated seat module C3304A-2, circuit CHS47 (VT/GN), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to U13 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U13 CHECK HEATED SEAT MODULE COMMAND CIRCUIT FOR AN OPEN
Measure the resistance between heated seat module C3304A-2, circuit CHS47 (VT/GN), harness side and auxiliary climate control assembly C3198-16, circuit CHS47 (VT/GN), harness side. Is the resistance less than 3 ohms?	Yes GO to U14 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U14 CHECK THE AUXILIARY CLIMATE CONTROL ASSEMBLY OUTPUT
Connect: Auxiliary Climate Control Assembly C3198 . Connect: Heated Seat Module C3304A . Connect: Heated Seat Module C3304B . Ignition ON. NOTE: The following measurement must be taken by back-probing the heated seat module C3304A. NOTE: The voltage on circuit CHS47 (VT/GN) should drop momentarily when the driver heated seat control button is pressed. Measure the voltage between heated seat module C3304A-2, circuit CHS47 (VT/GN), harness side and ground by back-probing heated seat module C3304A-2. Press the LH rear heated seat control button on the auxiliary climate control assembly and note the voltage. Is the voltage greater than 11 volts before pressing the LH rear heated seat control button, then momentarily drops when the heated seat control button is pressed?	Yes INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 . No If the voltage is greater than 11 volts but did not drop when the driver heated seat button was pressed, INSTALL a new auxiliary climate control assembly. REFER to Section 412-02 . If the voltage is less than 11 volts, INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to U15 .
U15 CHECK FOR SRS DTCs
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: 2nd Row Safety Belt Inflator C3801 (LH) . Ignition ON. Using a scan tool, clear the RCM DTCs. Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTCs retrieved during self-test?	Yes REFER to Section 501-20B for pinpoint test direction. No The repair is complete. RETURN the vehicle to the customer.

Pinpoint Test V: The Heated Seat is Inoperative/Does Not Operate Correctly — Right Rear

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

When the ignition is on and the driver heated seat button on the auxiliary climate control assembly is pressed, a momentary ground signal is sent to the heated seat module on the command circuit to turn the system on or off. Upon receiving a signal, the heated seat module decreases one setting (the sequence is high, low, off, high). The heated seat module supplies voltage to the cushion and backrest heater mats. The cushion and backrest heater mats are connected in series and operate together. Temperature is maintained by a temperature sensor contained within the cushion heater mat. The heated seat module supplies a reference voltage to the temperature sensor and monitors the signal to control current flow to the heater mats.

This pinpoint test is intended to diagnose the following:

Fuse(s)
Wiring, terminals or connectors
Heater mat
Auxiliary climate control assembly
Rear heated seat module

PINPOINT TEST V: THE HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — RIGHT REAR

Test Step	Result / Action to Take
V1 CHECK THE VOLTAGE TO THE REAR HEATED SEAT MODULE
Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. If equipped with inflatable safety belts, disconnect 2nd Row Safety Belt Inflator C3645 (RH). To access the electrical connector: Remove 5 screws and the seat track inboard inner and outer covers. Detach the cushion cover front and inboard retainers. Lift the cushion cover and foam pad. Disconnect: Heated Seat Module C3304B . Measure the voltage between: heated seat module C3304B-3, circuit SBB30 (BN/RD), harness side and ground. Is the voltage greater than 11 volts?	Yes GO to V2 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V2 CHECK RIGHT REAR HEATER MATS RESISTANCE AND HEATER CIRCUITS FOR AN OPEN
Measure the resistance between rear heated seat module C3304B-6, circuit CHS43 (GY/BU), harness side and ground. Is the resistance between 1.2 and 4 ohms?	Yes GO to V7 . No GO to V3 .
V3 CHECK RIGHT REAR SEAT CUSHION HEATER CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Cushion Heater Mat C3169 . Measure the resistance between: heated seat module C3304B-6, circuit CHS43 (GY/BU), harness side and passenger seat cushion heater mat C3169-1, circuit CHS43 (GY/BU), harness side. heated seat module C3304B-6, circuit CHS43 (GY/BU), harness side and ground. Is the resistance less than 3 ohms between heated seat module and cushion heater mat and greater than 10,000 ohms between the heated seat module and ground?	Yes GO to V4 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V4 CHECK RIGHT REAR HEATER MATS GROUND CIRCUIT FOR AN OPEN
Disconnect: Backrest Heater Mat C3170 . Measure the resistance between right backrest heater mat C3170-2, circuit GD351 (BK/GN), harness side and ground. Is the resistance less than 3 ohms?	Yes GO to V5 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V5 CHECK RIGHT REAR CUSHION HEATER MAT FOR AN OPEN
Measure the resistance between right rear cushion heater mat C3169 pins 1 and 4, component side. Is the resistance between 0.6 and 2 ohms?	Yes GO to V6 . No INSTALL a new right rear cushion heater mat. REFER to Seat Cushion Heater Mat — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V6 CHECK RIGHT REAR BACKREST HEATER MAT FOR AN OPEN
Measure the resistance between right rear backrest heater C3170 pins 1 and 2, component side. Is the resistance between 0.6 and 2 ohms?	Yes REPAIR circuit CHS44 (GN/VT). TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 . No INSTALL a new rear seat backrest heater mat. REFER to Seat Backrest Heater Mat — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V7 CHECK TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
Disconnect: Heated Seat Module C3304A . Ignition ON. Measure the voltage between rear heated seat module C3304A-9, circuit VHS45 (GY/BN), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 . No GO to V8 .
V8 CHECK HEATED SEAT TEMPERATURE SENSOR CIRCUITS FOR AN OPEN AND SHORT TO GROUND
Ignition OFF. Measure the resistance between: rear heated seat module C3304A-9, circuit VHS45 (GY/BN), harness side and C3304A-12, circuit RHS41 (GN/BN), harness side. rear heated seat module C3304A-9, circuit VHS45 (GY/BN), harness side and ground. Is the resistance greater than 300 and less than 300,000 ohms between C3304A-9 and C3304A-12 and greater than 10,000 ohms between C3304A-9 and ground?	Yes GO to V11 . No GO to V9 .
V9 CHECK HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Cushion Heater Mat C3169 . Measure the resistance between: rear heated seat module C3304A-9, circuit VHS45 (GY/BN), harness side and rear seat cushion heater mat C3169-2, circuit VHS45 (GY/BN), harness side. rear heated seat module C3304A-9, circuit VHS45 (GY/BN), harness side and ground. Is the resistance less than 3 ohms between C3304A-9 and C3169-2, and greater than 10,000 ohms between C3304A-9 and ground?	Yes GO to V10 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V10 CHECK THE TEMPERATURE SENSOR FOR AN OPEN
Measure the resistance between rear heated seat cushion C3169 pin 2 and pin 3, component side. Is the resistance between 300 ohms and 300,000 ohms?	Yes REPAIR ground circuit RHS41 (GN/BN). TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 . No INSTALL a new rear seat cushion heater mat. REFER to Seat Cushion Heater Mat — Second Row, 40 Percent in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V11 CHECK HEATED SEAT MODULE COMMAND CIRCUIT FOR SHORT TO VOLTAGE
Disconnect: Auxiliary Climate Control Assembly C3198 . Ignition ON. Measure the voltage between heated seat module C3304A-8, circuit CHS51 (YE/GY), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 . No GO to V12 .
V12 CHECK HEATED SEAT MODULE COMMAND CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Measure the resistance between heated seat module C3304A-8, circuit CHS51 (YE/GY), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to V13 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V13 CHECK HEATED SEAT MODULE COMMAND CIRCUIT FOR AN OPEN
Measure the resistance between heated seat module C3304A-8, circuit CHS51 (YE/GY), harness side and auxiliary climate control assembly C3198-13, circuit CHS51 (YE/GY), harness side. Is the resistance less than 3 ohms?	Yes GO to V14 . No REPAIR the circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V14 CHECK THE AUXILIARY CLIMATE CONTROL ASSEMBLY OUTPUT
Connect: Auxiliary Climate Control Assembly C3198 . Connect: Heated Seat Module C3304A . Connect: Heated Seat Module C3304B . Ignition ON. NOTE: The following measurement must be taken by back-probing the heated seat module C3304A. NOTE: The voltage on circuit CHS51 (YE/GY) should drop momentarily when the RH rear heated seat control button is pressed. Measure the voltage between heated seat module C3304A-8, circuit CHS51 (YE/GY), harness side and ground by back-probing heated seat module C3304A-8. Press the RH rear heated seat control button on the auxiliary climate control assembly and note the voltage. Is the voltage greater than 11 volts before pressing the RH rear heated seat control button, then momentarily drops when the heated seat control button is pressed?	Yes INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 . No If the voltage is greater than 11 volts but did not drop when the RH rear heated seat button was pressed, INSTALL a new auxiliary climate control assembly. REFER to Section 412-02 . If the voltage is less than 11 volts, INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to V15 .
V15 CHECK FOR SRS DTCs
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: 2nd Row Safety Belt Inflator C3645 (RH) . Ignition ON. Using a scan tool, clear the RCM DTCs. Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTCs retrieved during self-test?	Yes REFER to Section 501-20B for pinpoint test direction. No The repair is complete. RETURN the vehicle to the customer.

Pinpoint Test W: The Heated Seat Does Not Operate Correctly — Left Rear Seat Does Heat but the Heated Seat Indicator Does Not Illuminate When Pressed

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

Upon receiving a pulsed ground from the auxiliary climate control assembly, the rear heated seat module decreases one setting (the sequence is high, low, off, high). There are 2 circuits between the rear heated seat module and auxiliary climate control assembly that control the indicator operation. When voltage is supplied to the auxiliary climate control assembly on either of these circuits the appropriate indicator illuminates. When a heated seat is set to high, both indicators on the heated seat control button illuminate. When a heated seat is set to low, only the lower indicator illuminates. When a heated seat is set to off, neither is illuminated.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Auxiliary climate control assembly
Rear heated seat module

PINPOINT TEST W: THE HEATED SEAT DOES NOT OPERATE CORRECTLY — LEFT REAR SEAT DOES HEAT BUT THE HEATED SEAT INDICATOR DOES NOT ILLUMINATE WHEN PRESSED

Test Step	Result / Action to Take
W1 CHECK THE INDICATOR CIRCUITS FOR A SHORT TO GROUND
Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. If equipped with inflatable safety belts, disconnect 2nd Row Safety Belt Inflator C3801 (LH). To access the electrical connector: Remove 5 screws and the seat track inboard inner and outer covers. Detach the cushion cover front and inboard retainers. Lift the cushion cover and foam pad. Disconnect: Auxiliary Climate Control Assembly C3198 . Disconnect: Heated Seat Module C3304A . Measure the resistance between: heated seat module C3304A-4, circuit CHS49 (VT), harness side and ground. heated seat module C3304A-5, circuit CHS48 (YE), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes GO to W2 . No REPAIR the affected circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to W5 .
W2 CHECK THE INDICATOR CIRCUITS FOR AN OPEN
Measure the resistance between: rear heated seat module C3304A-4, circuit CHS49 (VT), harness side and auxiliary climate control assembly C3198-14, circuit CHS49 (VT), harness side. rear heated seat module C3304A-5, circuit CHS48 (YE), harness side and auxiliary climate control assembly C3198-15, circuit CHS48 (YE), harness side. Are the resistances less than 3 ohms?	Yes GO to W3 . No REPAIR the affected circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to W5 .
W3 CHECK THE HEATED SEAT HIGH INDICATOR
Connect: Auxiliary Climate Control Assembly C3198 . Disconnect: Heated Seat Module C3304B . Ignition ON. Connect a fused jumper lead between rear heated seat module C3304A-5, circuit CHS48 (YE), harness side and C3304B-1, circuit SBB30 (BN/RD), harness side. Does the high indicator illuminate on the auxiliary climate control assembly?	Yes GO to W4 . No INSTALL a new auxiliary climate control assembly. REFER to Section 412-02 . If equipped with inflatable safety belts, GO to W5 .
W4 CHECK THE HEATED SEAT LOW INDICATOR
Connect a fused jumper lead between heated seat module C3304A-4, circuit CHS49 (VT), harness side and C3304B-1, circuit SBB30 (BN/RD), harness side. Does the low indicator illuminate on the auxiliary climate control assembly?	Yes INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to W5 . No INSTALL a new auxiliary climate control assembly. REFER to Section 412-02 . TEST the system for normal operation. If equipped with inflatable safety belts, GO to W5 .
W5 CHECK FOR SRS DTCs
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: 2nd Row Safety Belt Inflator C3801 (LH) . Ignition ON. Using a scan tool, clear the RCM DTCs. Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTCs retrieved during self-test?	Yes REFER to Section 501-20B for pinpoint test direction. No The repair is complete. RETURN the vehicle to the customer.

Pinpoint Test X: The Heated Seat Does Not Operate Correctly — Right Rear Seat Does Heat but the Heated Seat Indicator Does Not Illuminate When Pressed

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

Upon receiving a pulsed ground from the auxiliary climate control assembly, the rear heated seat module decreases one setting (the sequence is high, low, off, high). There are 2 circuits between the rear heated seat module and auxiliary climate control assembly that control the indicator operation. When voltage is supplied to the auxiliary climate control assemblyon either of these circuits the appropriate indicator illuminates. When a heated seat is set to high, both indicators on the heated seat control button illuminate. When a heated seat is set to low, only the lower indicator illuminates. When a heated seat is set to off, neither is illuminated.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Auxiliary climate control assembly
Rear heated seat module

PINPOINT TEST X: THE HEATED SEAT DOES NOT OPERATE CORRECTLY — RIGHT REAR SEAT DOES HEAT BUT THE HEATED SEAT INDICATOR DOES NOT ILLUMINATE WHEN PRESSED

Test Step	Result / Action to Take
X1 CHECK THE INDICATOR CIRCUITS FOR A SHORT TO GROUND
Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. If equipped with inflatable safety belts, disconnect 2nd Row Safety Belt Inflator C3645 (RH). To access the electrical connector: Remove 5 screws and the seat track inboard inner and outer covers. Detach the cushion cover front and inboard retainers. Lift the cushion cover and foam pad. Disconnect: Auxiliary Climate Control Assembly C3198 . Disconnect: Heated Seat Module C3304A . Measure the resistance between: heated seat module C3304A-10, circuit CHS53 (WH/BN), harness side and ground. heated seat module C3304A-11, circuit CHS52 (BU), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes GO to X2 . No REPAIR the affected circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to X5 .
X2 CHECK THE INDICATOR CIRCUITS FOR AN OPEN
Measure the resistance between: auxiliary climate control assembly C3198-11, circuit CHS53 (WH/BN), harness side and heated seat module C3304A-10, circuit CHS53 (WH/BN), harness side. auxiliary climate control assembly C3198-12, circuit CHS52 (BU), harness side and heated seat module C3304A-11, circuit CHS52 (BU), harness side. Are the resistances less than 3 ohms?	Yes GO to X3 . No REPAIR the affected circuit. TEST the system for normal operation. If equipped with inflatable safety belts, GO to X5 .
X3 CHECK THE HEATED SEAT HIGH INDICATOR
Connect: Auxiliary Climate Control Assembly C3198 . Disconnect: Heated Seat Module C3304B . Ignition ON. Connect a fused jumper lead between heated seat module C3304A-11, circuit CHS52 (BU), harness side and C3304B-3, circuit SBB30 (BN/RD), harness side. Does the high indicator illuminate on the auxiliary climate control assembly?	Yes GO to X4 . No INSTALL a new auxiliary climate control assembly. REFER to Section 412-02 . If equipped with inflatable safety belts, GO to X5 .
X4 CHECK THE HEATED SEAT LOW INDICATOR
Connect a fused jumper lead between heated seat module C3304A-10, circuit CHS53 (WH/BN), harness side and C3304B-3, circuit SBB30 (BN/RD), harness side. Does the low indicator illuminate on the auxiliary climate control assembly?	Yes INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. If equipped with inflatable safety belts, GO to X5 . No INSTALL a new auxiliary climate control assembly. REFER to Section 412-02 . If equipped with inflatable safety belts, GO to X5 .
X5 CHECK FOR SRS DTCs
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: 2nd Row Safety Belt Inflator C3645 (RH) . Ignition ON. Using a scan tool, clear the RCM DTCs. Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTCs retrieved during self-test?	Yes REFER to Section 501-20B for pinpoint test direction. No The repair is complete. RETURN the vehicle to the customer.

Pinpoint Test Y: The Heated Seat Does Not Operate Correctly — Left Rear Seat Does Heat but the Heated Seat Indicator is On All the Time

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

Pressing the left rear heated seat switch once in either the high or low mode commands on the left rear heated seat. Voltage is then supplied to the left rear heated seat switch from the heated seat module on one circuit for high heat mode or another for low heat mode to illuminate the switch indicator. Pressing the left rear heated seat switch again in the mode that is currently on sets the left rear heated seat to off and also turns that LED off.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Rear heated seat module

PINPOINT TEST Y: THE HEATED SEAT DOES NOT OPERATE CORRECTLY — LEFT REAR SEAT DOES HEAT BUT THE HEATED SEAT INDICATOR IS ON ALL THE TIME

Test Step	Result / Action to Take
Y1 CHECK HEATED SEAT INDICATOR CIRCUITS FOR A SHORT TO VOLTAGE
Disconnect: Heated Seat Module C3304A . Did the affected high or low indicator LED turn off when the heated seat module was disconnected?	Yes INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. No REPAIR the affected circuit. TEST the system for normal operation.

Pinpoint Test Z: The Heated Seat Does Not Operate Correctly — Right Rear Seat Does Heat but the Heated Seat Indicator is On All the Time

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

Pressing the right rear heated seat switch once in either the high or low mode commands on the right rear heated seat. Voltage is then supplied to the right rear heated seat switch from the heated seat module on one circuit for high heat mode or another for low heat mode to illuminate the switch indicator. Pressing the right rear heated seat switch again in the mode that is currently on sets the right rear heated seat to off and also turns that LED off.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Rear heated seat module

PINPOINT TEST Z: THE HEATED SEAT DOES NOT OPERATE CORRECTLY — RIGHT REAR SEAT DOES HEAT BUT THE HEATED SEAT INDICATOR IS ON ALL THE TIME

Test Step	Result / Action to Take
Z1 CHECK HEATED SEAT INDICATOR CIRCUITS FOR A SHORT TO VOLTAGE
Disconnect: Heated Seat Module C3304A . Did the affected high or low indicator LED turn off when the heated seat module was disconnected?	Yes INSTALL a new heated seat module. REFER to Heated Seat Module — Rear in this section. TEST the system for normal operation. No REPAIR the affected circuit. TEST the system for normal operation.

Pinpoint Test AA: The Seat Backrest Will Not Fold Upright — Second Row, 60 Percent

Normal Operation

The seat recliner contains a safety mechanism to prevent the backrest from being raised upright until the seat latches are latched to the strikers on the floor. When the backrest is folded down, the safety mechanism is engaged by the cable attached to the outboard latch foot and outboard recliner. The safety mechanism is disengaged when the seat latch feet are completely locked around the strikers allowing the backrest to be raised upright.

The safety belt retractor in the backrest uses a stop button in the safety belt webbing to prevent the webbing from retracting too far into the retractor. If the web stop button is damaged or missing and the seat backrest is lowered, the safety belt webbing may retract farther than intended and may also prevent the backrest from being raised fully upright. A service kit is available for web stop button installation.

This pinpoint test is intended to diagnose the following:

Safety belt web stop button missing
Inboard recliner
Outboard recliner

PINPOINT TEST AA: THE SEAT BACKREST WILL NOT FOLD UPRIGHT — SECOND ROW, 60 PERCENT

Test Step	Result / Action to Take
AA1 CHECK IF SAFETY BELT WEB STOP BUTTON IS PRESENT
Check the safety belt webbing for the web stop button at the retractor bezel on the top of the backrest. Is the web stop button present on the safety belt webbing?	Yes DISASSEMBLE as necessary to CHECK for disconnected or damaged cables or damaged RH or LH recliner. INSTALL new components as needed. TEST the system for normal operation. No INSTALL a new safety belt web stop button and follow all the instruction steps with the kit. TEST the system for normal operation.

Pinpoint Test AB: The Seat Backrest Will Not Fold Down — Second Row, 60 Percent

Normal Operation

Pulling the seat recliner handle releases the backrest for recline positions and to fold down. When the backrest is folded fully down, pulling the recliner handle again to the second stop position releases the seat latch feet from the strikers for the E-Z entry position. The inboard and outboard recliners operate in a synchronized manner and both lock the backrest when upright. The outboard recliner is released directly by the recliner lever while the inboard recliner is released by a cable attached to the recliner lever.

This pinpoint test is intended to diagnose the following:

Recliner cable disconnected or damaged
Outboard recliner
Inboard recliner

PINPOINT TEST AB: THE SEAT BACKREST WILL NOT FOLD DOWN — SECOND ROW, 60 PERCENT

Test Step	Result / Action to Take
AB1 CHECK FOR INTERMITTENT OPERATION OR BINDING RELEASE
NOTICE: The backrest must be folded flat before the floor latches can be released. Make sure there are no objects on the seat before lowering the backrest(s). Failure to follow this instruction may cause damage or incorrect operation of the seat. Operate the recline handle and check for intermittent operation or if excessive force is required to release the backrest. If the backrest remains stuck in the upright position, push rearward on the seat backrest while operating the recline handle in both directions. Does the seat fold intermittently or is excessive force on the recline handle required to release the backrest?	Yes INSTALL a new RH recliner (inboard). REFER to Seat Recliner — Inboard, Second Row, 60 Percent in this section. TEST the system for normal operation. No GO to AB2 .
AB2 CHECK THE LH RECLINER AND CABLES FOR DAMAGE
Remove the LH recliner outer cover (outboard) and check for foreign objects, disconnected or damaged cables or obvious damage to the LH recliner. Pull the release strap and check the LH recliner operation. The release lever should move smoothly in both directions without binding and return to the rest position with light spring tension. With the strap pulled, the backrest should move forward and rearward in all the recline positions. With the backrest fully upright, release strap pulled fully rearward and with forward pressure applied to the backrest, the LH side of the backrest should move slightly forward beyond the stopping point. Is there any foreign object, disconnected or damaged cables or obvious damage to the LH recliner found?	Yes INSTALL a new RH recliner (inboard). Do not re-use the original cable. REFER to Seat Recliner — Inboard, Second Row, 60 Percent in this section. TEST the system for normal operation. No REPAIR or INSTALL new components as needed. TEST the system for normal operation.

Pinpoint Test AC: The Seat Backrest Will Not Fold Down/Fold Upright — Second Row, 40 Percent (RH or LH)

Normal Operation

Pulling the seat recliner handle releases the backrest for recline positions and to fold down. When the backrest is folded fully down, pulling the recliner handle again to the second stop position releases the seat latch feet from the strikers for the E-Z entry position. The inboard and outboard recliners operate in a synchronized manner and both lock the backrest when upright. When folding the backrest down, the outboard recliner is released directly by the recliner lever while the inboard recliner is released by a cable attached to the outboard recliner. If the backrest is not folded all the way down, the seat does not release to the E-Z entry position.

The seat recliner contains a safety mechanism to prevent the backrest from being raised upright until the seat latches are latched to the strikers on the floor. When the backrest is folded down, the safety mechanism is engaged by the cable attached to the inboard latch foot and outboard recliner. The safety mechanism is disengaged when the seat latch feet are completely locked around the strikers allowing the backrest to be raised upright.

This pinpoint test is intended to diagnose the following:

Recliner cable disconnected or damaged
Recliner

PINPOINT TEST AC: THE SEAT BACKREST WILL NOT FOLD DOWN/FOLD UPRIGHT — SECOND ROW, 40 PERCENT (RH OR LH)

Test Step	Result / Action to Take
AC1 CHECK THE OUTBOARD RECLINER AND CABLES FOR DAMAGE
Remove the outboard recliner outer cover and check for foreign objects, disconnected or damaged cables or obvious damage to the outboard recliner. Pull the release strap and check the outboard recliner operation. The release lever should move smoothly in both directions without binding and return to the rest position with light spring tension. With the strap pulled, the backrest should move forward and rearward in all the recline positions. With the backrest fully upright, release strap pulled fully rearward and with forward pressure applied to the backrest, the backrest should move slightly forward beyond the stopping point. Is there any foreign object, disconnected or damaged cables or obvious damage to the outboard recliner found?	Yes REPAIR any disconnected or damaged cables or damaged RH or LH recliner. INSTALL new components as needed. TEST the system for normal operation. No GO to AC2 .
AC2 CHECK THE RECLINER HANDLE POSITION
Check if the recline handle is pointing downward instead of forward as compared the handle position of the 60 percent seat. Is the recline handle pointing downward?	Yes INSTALL a new outboard recliner. REFER to Seat Recliner — Second Row, 40 Percent in this section. TEST the system for normal operation. No DISASSEMBLE as necessary to CHECK for disconnected or damaged cables or damaged recliners. INSTALL new components as needed. TEST the system for normal operation.

Pinpoint Test AD: DTC B1317

Refer to Wiring Diagrams Cell 123 , Memory Seats for schematic and connector information.

Normal Operation

The Driver Seat Module (DSM) continuously monitors the input voltage for correct operation. If the DSM detects input voltage below 11 volts, it stores DTC B1318 in memory. If the DSM detects input voltage above 15 volts, it stores DTC B1317 in memory. If DTC B1317 or B1318 is set, the DSM disables the memory system outputs for the driver seat memory operation.

DTC B1317 (Battery Voltage High) — This DTC sets if the DSM detects voltage above 15 volts.

This pinpoint test is intended to diagnose the following:

Charging system concern
DSM

PINPOINT TEST AD: DTC B1317

NOTE: DTC B1317 may be stored in the module memory due to previous battery charging or vehicle jump starting events.

Test Step	Result / Action to Take
AD1 CHECK FOR DTC B1317, B1676 OR P0563 SET IN OTHER MODULES
Ignition ON. Enter the following diagnostic mode on the scan tool: (All Modules) Self-Test . Retrieve the continuous memory DTCs from all modules. Is DTC B1317, B1676 or P0563 (PCM) set in more than one module?	Yes REFER to Section 414-00 to diagnose an overcharging condition. No GO to AD2 .
AD2 CHECK THE BATTERY VOLTAGE
Turn off all interior/exterior lights and accessories. Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage. Does the battery voltage rise to 15 volts or higher?	Yes REFER to Section 414-00 to diagnose an overcharging condition. No GO to AD3 .
AD3 RECHECK FOR DTC B1317
Turn the engine off. Ignition ON. Enter the following diagnostic mode on the scan tool: DSM Self-Test . Clear the continuous memory DTCs. Carry out the DSM self-test. Is DTC B1317 present?	Yes INSTALL a new DSM . REFER to Driver Seat Module (DSM) in this section. TEST the system for normal operation. No The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

Pinpoint Test AE: The Power Lumbar is Inoperative — Driver

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 123 , Memory Seats for schematic and connector information.

Normal Operation

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Seat control switch
Power lumbar motor assembly

PINPOINT TEST AE: THE POWER LUMBAR IS INOPERATIVE — DRIVER

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
AE1 CHECK THE POWER LUMBAR MOTOR FOR VOLTAGE
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Power Lumbar Motor C3215 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure the voltage between power lumbar motor C3215-B, circuit CPS18 (BN/GN), harness side and power lumbar motor C3215-A, circuit CPS19 (GY/VT), harness side, while operating the lumbar switch in both directions. Is the voltage greater than 11 volts when the switch is operated in both directions and 0 volt in the rest position?	Yes INSTALL a new power lumbar assembly. REFER to Lumbar Assembly — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to AE2 .
AE2 CHECK THE LUMBAR MOTOR CIRCUITS FOR AN OPEN
Disconnect: Seat Control Switch C369 . Measure the resistance between: seat control switch C369-7, circuit CPS19 (GY/VT), harness side and power lumbar motor C3215-A, circuit CPS19 (GY/VT), harness side. seat control switch C369-10, circuit CPS18 (BN/GN), harness side and power lumbar motor C3215-B, circuit CPS18 (BN/GN), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AF: Functional Test — Third Row Power Seat

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The Third Row Power Seat Functional Test checks the complete seat for correct operation and functionality. This pinpoint test focuses of those faults which affect operation of both seats.

B1317:11 (Third Row Power Fold Seat Output: Circuit Short To Ground) — sets when the BCM detects a short to ground in circuit CPS48 (BU).
B1317:15 (Third Row Power Fold Seat Output: Circuit Short To Battery or Open) — sets when the Body Control Module (BCM) detects an open or short to battery in circuit CPS48 (BU).

This pinpoint test is intended to diagnose the following:

Fuse(s)
Wiring, terminals or connectors
Third row power seat relay
Seat control switch
PFSM
BCM

PINPOINT TEST AF: FUNCTIONAL TEST — THIRD ROW POWER SEAT

NOTICE: The following pinpoint test uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this section. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.

NOTE: Verify good battery condition before diagnosing the Power-Fold Seat Module (PFSM) system. Poor battery condition may interfere with PFSM operation. If battery voltage drops below 11 volts, seat movement does not start. If battery voltage drops below 8 volts, a started seat movement stops.

NOTE: The demand lighting/ battery saver system times-out after 10 minutes and disables the third row power seat operation. Meter voltage measurements may be inaccurate when this occurs, which could lead to misdiagnosis . To enable the demand lighting/ battery saver system during diagnosis and testing, close and open any vehicle door.

NOTE: Very cold weather conditions can cause the power-fold mechanisms to bind resulting in incorrect seat operation. In cold weather, allow the seat to warm up before checking seat operation.

Test Step

Result / Action to Take

AF1 CHECK SEAT(S) OPERATION

Check the seat(s).

Verify the vehicle is in PARK and liftgate open to enable the system and access the seat control switch. To diagnose an inoperative power liftgate, refer to Section 501-03 .

Check the LIFTGATE AJAR warning indicator on the IPC module display. If the warning indicator is not illuminated, the power-fold seat system may not be enabled due to a concern with the liftgate ajar switch circuitry (part of demand lighting system). Refer to Section 417-02 to diagnose the demand lighting/ battery saver.

Verify no objects/obstructions are present between, below, in front or in back of the seats.

Select BOTH using the seat select button.

Operate the seats to each position (NORMAL, STOW, FOLD and TAILGATE) allowing the seats to complete each selection.

Does either seat move to any position?

Yes
If both seats operate to each selected position correctly, GO to AF2 for additional checks.

If only the LH seat does not operate correctly, GO to Pinpoint Test AG .

If only the RH seat does not operate correctly, GO to Pinpoint Test AH .

If both seats move but neither seat correctly obtains all the selected positions, GO to AF19 .

No
GO to AF3 .

AF2 CHECK THE OPERATION OF EACH SEAT SEPARATELY

Check the seats.

Select LH using the seat select button and operate the seat to each position (NORMAL, STOW, FOLD and TAILGATE) allowing the seat to complete each selection.

Select RH using the seat select button and operate the seat to each position allowing the seat to complete each selection.

Do both seats operate correctly?

Yes
The system is operating correctly at this time. CHECK for causes of an intermittent concern such as loose, corroded or disconnected connectors, pinched or damaged wiring and REPAIR as necessary.

No
GO to AF13 .

AF3 CHECK THE BCM FOR DTCs

Ignition ON.
Enter the following diagnostic mode on the scan tool: Self Test — BCM .
Are DTCs present?

Yes
For DTC B1317:11 or B1317:15, GO to AF10 .

For any other DTCs, REFER to Section 419-10 .

No
GO to AF4 .

AF4 CHECK FOR VOLTAGE AND GROUND TO THE PFSM

Disconnect: PFSM C4250A .

To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.

Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Measure the voltage between PFSM C4250A-8, circuit CBB22 (GN/OG), harness side and PFSM C4250A-10, circuit GD349 (BK/GY), harness side.

Is the voltage greater than 11 volts?

Yes
GO to AF12 .

No
GO to AF5 .

AF5 CHECK THE PFSM FOR VOLTAGE

Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Measure the voltage between PFSM C4250A-8, circuit CBB22 (GN/OG), harness side and ground.

Is the voltage greater than 11 volts?

Yes
REPAIR circuit GD349 (BK/GY) for an open. TEST the system for normal operation.

No
GO to AF6 .

AF6 CHECK THE THIRD ROW POWER SEAT RELAY FOR VOLTAGE AND GROUND

Disconnect: Third Row Power Seat Relay .
Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Measure the voltage between third row power seat relay socket pin 1, circuit CLN09 (YE/GN), and third row power seat relay socket pin 2, circuit GD120 (BK/GN).

Is the voltage greater than 11 volts?

Yes
GO to AF8 .

No
GO to AF7 .

AF7 CHECK THE THIRD ROW POWER SEAT RELAY FOR VOLTAGE

Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Measure the voltage between third row power seat relay socket pin 1, circuit CLN09 (YE/GN) and ground.

Is the voltage greater than 11 volts?

Yes
REPAIR circuit GD120 (BK/GN) for an open. TEST the system for normal operation.

No
REPAIR circuit CLN09 (YE/GN). TEST the system for normal operation.

AF8 CHECK THE THIRD ROW POWER SEAT RELAY FOR VOLTAGE

Measure the voltage between third row power seat relay socket pin 3, circuit SBB22 (BN/RD), harness side and ground.

Is the voltage greater than 11 volts?

Yes
GO to AF9 .

No
VERIFY Battery Junction Box (BJB) fuse 22 (30A) is OK. If the fuse is OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify possible causes of the circuit short. TEST the system for normal operation.

AF9 CHECK THE CIRCUIT BETWEEN THE PFSM AND THE THIRD ROW POWER SEAT RELAY FOR AN OPEN

Ignition OFF.
Measure the resistance between PFSM C4250A-8, circuit CBB22 (GN/OG), harness side and third row power seat relay socket pin 5, circuit CBB22 (GN/OG).

Is the resistance less than 3 ohms?

Yes
INSTALL a new third row power seat relay. TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

AF10 CHECK THE PFSM ENABLE CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: PFSM C4250E .

To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.

Disconnect: BCM C2280C .
Measure the voltage between PFSM C4250E-4, circuit CPS48 (BU), harness side and ground.

Is any voltage present?

Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.

No
GO to AF11 .

AF11 CHECK THE PFSM ENABLE CIRCUIT FOR AN OPEN AND SHORT TO GROUND

Ignition OFF.
Disconnect: PFSM C4250E .

To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.

Disconnect: BCM C2280C .
Measure the resistance between:

PFSM C4250E-4, circuit CPS48 (BU), harness side and BCM C2280C-2, circuit CPS48 (BU), harness side.

PFSM C4250E-4, circuit CPS48 (BU), harness side and ground.

Is the resistance less than 3 ohms between C4250E and C2280C, and greater than 10,000 ohms between C4250E and ground?

Yes
GO to AF21 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.

AF12 CHECK THE PFSM ENABLE CIRCUIT FOR VOLTAGE

Disconnect: PFSM C4250E .

To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.

Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Measure the voltage between PFSM C4250E-4, circuit CPS48 (BU), harness side and ground.

Is the voltage greater than 11 volts?

Yes
GO to AF13 .

No
GO to AF21 .

AF13 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

Connect: PFSM C4250A (if previously disconnected) .
Remove the third row seat control switch but do not disconnect the electrical connector at this time. Refer to Seat Control Switch — Third Row in this section.
Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
With all the switch buttons at rest and seat select set to BOTH, measure voltage between the seat control switch and ground by back-probing switch connector pins as indicated in the following table:

Switch Connector	Circuit	Expected Voltage
C4179-2	CPSA1 (WH/GN)	Between 7 and 12.9 volts
C4179-3	CPSB2 (GY)	Between 3.5 and 4.0 volts
C4179-4	CPSB1 (GN)	Between 3.5 and 4.0 volts

Do the voltages agree with the expected voltages in the table?

Yes
GO to AF18 .

No
GO to AF14 .

AF14 CHECK CIRCUITS FOR VOLTAGE WITH THE SEAT CONTROL SWITCH DISCONNECTED

Disconnect: Seat Control Switch C4179 .
Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Measure the voltage between seat control switch C4179, harness side and ground using the following table:

Switch Connector	Circuit	Expected Voltage
C4179-2	CPSA1 (WH/GN)	Greater than 11 volts
C4179-3	CPSB2 (GY)	Greater than 4 volts
C4179-4	CPSB1 (GN)	Greater than 4 volts

Do the voltages agree with the expected voltages in the table?

Yes
INSTALL a new seat control switch. REFER to Seat Control Switch — Third Row in this section. TEST the system for normal operation.

No
GO to AF15 .

AF15 CHECK THE SEAT CONTROL SWITCH CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: PFSM C4250C .
Disconnect: PFSM C4250D .
Measure the voltage between seat control switch C4179, harness side and ground using the following table:

Switch Connector	Circuit
C4179-2	CPSA1 (WH/GN)
C4179-3	CPSB2 (GY)
C4179-4	CPSB1 (GN)

Is any voltage present?

Yes
REPAIR the circuit(s). TEST the system for normal operation.

No
GO to AF16 .

AF16 CHECK THE SEAT CONTROL SWITCH CIRCUITS FOR AN OPEN OR SHORT TO GROUND

Measure the resistance between seat control switch circuits, harness side and PFSM , harness side; and between seat control switch circuits, harness side and ground using the following table:

Seat Control Switch Connector	Circuit	PFSM Connector / Chassis Ground
C4179-2	CPSA1 (WH/GN)	Chassis Ground
C4179-3	CPSB2 (GY)	Chassis Ground
C4179-4	CPSB1 (GN)	Chassis Ground
C4179-2	CPSA1 (WH/GN)	C4250C-1
C4179-3	CPSB2 (GY)	C4250D-3
C4179-4	CPSB1 (GN)	C4250D-2
C4179-5	RPSB2 (BN)	C4250C-4

Are the resistances less than 3 ohms between C4179 and PFSM and greater than 10,000 ohms between the C4179 and ground?

Yes
GO to AF17 .

No
REPAIR the affected circuit(s). TEST the system for normal operation.

AF17 CHECK THE SEAT CONTROL SWITCH CIRCUITS FOR A SHORT TOGETHER

Measure the resistance between seat control switch C4179 circuits, harness side, using the following table:

C4179	Circuits
5 and 2	RPSB2 (BN) and CPSA1 (WH/GN)
5 and 3	RPSB2 (BN) and CPSB2 (GY)
5 and 4	RPSB2 (BN) and CPSB1 (GN)
2 and 4	CPSA1 (WH/GN) and CPSB1 (GN)
3 and 4	CPSB2 (GY) and CPSB1 (GN)
3 and 2	CPSB2 (GY) and CPSA1 (WH/GN)

Are the resistances greater than 10,000 ohms?

Yes
GO to AF22 .

No
REPAIR the affected circuit(s). TEST the system for normal operation.

AF18 CHECK THE VOLTAGE AT THE SEAT CONTROL SWITCH CIRCUITS

NOTE: C4250E must be disconnected or inaccurate meter measurements may be taken.

Disconnect: PFSM C4250E .

To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.

Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Measure the voltage between seat control switch C4179 and ground by back-probing switch connector pins and pressing the switch buttons as indicated in the following table:

Connector	Circuit	Switch Position	Expected Voltage
C4179-2	CPSA1 (WH/GN)	LH	Between 4.2 and 8.1 volts
C4179-2	CPSA1 (WH/GN)	RH	Between 3.0 and 5.9 volts
C4179-2	CPSA1 (WH/GN)	BOTH (LH and RH)	Between 7 and 12.9 volts
C4179-3	CPSB2 (GY)	FOLD	Between 1.2 and 1.5 volts
C4179-3	CPSB2 (GY)	TAILGATE	Between 1.9 and 2.2 volts
C4179-4	CPSB1 (GN)	NORMAL	Between 1.2 and 1.5 volts
C4179-4	CPSB1 (GN)	STOW	Between 1.8 and 2.2 volts

Do the measured voltages agree with the table?

Yes
GO to AF22 .

No
INSTALL a new seat control switch. REFER to Seat Control Switch — Third Row in this section. TEST the system for normal operation.

AF19 CHECK THE SEAT CONTROL SWITCH CIRCUITS FOR A SHORT TOGETHER

Disconnect: Seat Control Switch C4179 .
Disconnect: PFSM C4250C .
Disconnect: PFSM C4250D .
Using the following table, measure the resistance between the seat control switch C4179 pins indicated, harness side:

C4179 Pins	Circuits
5 and 2	GD149 (BK/GY) and CPS48 (BU)
5 and 3	GD149 (BK/GY) and CPS49 (BN/GN)
5 and 4	GD149 (BK/GY) and CPS50 (BU/BN)
2 and 4	CPS48 (BU) and CPS50 (BU/BN)
3 and 4	CPS49 (BN/GN) and CPS50 (BU/BN)
3 and 2	CPS49 (BN/GN) and CPS48 (BU)

Are the resistances greater than 10,000 ohms?

Yes
GO to AF20 .

No
REPAIR the affected circuit(s). TEST the system for normal operation.

AF20 CHECK THE LATCH SWITCH AND LATCH MOTOR RETURN CIRCUITS FOR AN OPEN

Gain access to the LH latch switch connector. Refer to the appropriate steps in Seat Latch — Third Row, Power in this section.
Disconnect: Left Seat Latch Switch C4241 .
Disconnect: Left Seat Latch Motor C4243 .
Disconnect: PFSM C4250A .
Measure the resistance between:

PFSM C4250A-12, circuit RPSB0 (BN/WH), harness side and left seat latch switch C4241-2, circuit RPSB0 (BN/WH), harness side.

PFSM C4250A-6, circuit CPSA9 (VT/OG), harness side and left seat latch motor C4243-2, circuit CPSA9 (VT/OG), harness side.

Are the resistances less than 3 ohms?

Yes
GO to AF22 .

No
REPAIR the affected circuit(s). TEST the system for normal operation.

AF21 CHECK BCM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM

Inspect BCM C2280C for corrosion and pushed out or damaged pins and repair as necessary.
Connect: BCM C2280C .
Connect: PFSM C4250E .
Operate the seats and determine if the concern is still present.
Is the concern still present?

Yes
INSTALL a new . REFER to Section 419-10 . TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

AF22 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM

Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary.
Reconnect all the PFSM connectors.
Connect: Left Seat Latch Switch C4241 .
Connect: Left Seat Latch Motor C4243 .
Operate the seats and determine if the concern is still present.
Is the concern still present?

Yes
INSTALL a new . Refer to Power-Fold Seat Module (PFSM) in this section. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test AG: Seat Latch Motor and Latch Switch Functional Test — LH Third Row Power Seat

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The Power-Fold Seat Module (PFSM) supplies voltage and ground to the seat latch release motor to electronically release the seat latch from the latched position (seat folded and latched to the floor) when the third row seat control switch sends a signal to the PFSM to move the seat to the STOW or TAILGATE position. The PFSM monitors the latch switch to determine if the position of the latch is closed or released. If the seat latch does not release, the latch must be mechanically released to move the seat from the latched home position. If a fault is detected during a seat operation the seat may enter a faulted state. When the seat is in a faulted state the seat backrest and cushion fold together to prevent the seat from being occupied.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Latch release motor and switch
PFSM

PINPOINT TEST AG: SEAT LATCH MOTOR AND LATCH SWITCH FUNCTIONAL TEST — LH THIRD ROW POWER SEAT

NOTE: The demand lighting/battery saver system times-out after 10 minutes and disables the third row power seat operation. Meter voltage measurements may be inaccurate when this occurs, which could lead to misdiagnosis . To enable the accessory delay system during diagnosis and testing, close and open any vehicle door.

Test Step

Result / Action to Take

AG1 CONFIRM THE FUNCTIONAL TEST HAS BEEN COMPLETED

Verify the Functional Test — Third Row Power Seat has been completed before testing the latch assembly.
Has the Functional Test been completed?

Yes
GO to AG2 .

No
CARRY OUT the Functional Test — Third Row Power Seat. GO to Pinpoint Test AF and return to this test only if directed to do so.

AG2 CHECK FOR AUDIBLE SEAT LATCH OPERATION

Select the LH seat switch position and press the NORMAL or FOLD button.
Press the STOW button and observe and listen for latch motor operation.
Does the latch motor operate or is it audible?

Yes
GO to AG7 .

No
GO to AG3 .

AG3 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE SEAT LATCH MOTOR

Access the PFSM . If necessary, to release an inoperative latch or to reposition an inoperative power-stow motor, refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.
Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Connect a test lamp between C4250A-3, circuit CPSA8 (GY/OG) and C4250A-6, circuit CPSA9 (VT/OG) by back-probing the connector.

Press the STOW button and monitor the test lamp.
Does the test lamp illuminate momentarily when the STOW button is pressed?

Yes
GO to AG4 .

No
GO to AG5 .

AG4 CHECK THE SEAT LATCH MOTOR CIRCUITS FOR AN OPEN

Disconnect: PFSM C4250A .
Disconnect: LH Latch Motor C4243 .

To access to the LH latch motor connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between:

PFSM C4250A-3, circuit CPSA8 (GY/OG), harness side and LH latch motor C4243-1, circuit CPSB9 (VT/BN), harness side.

PFSM C4250A-6, circuit CPSA9 (VT/OG), harness side and LH latch motor C4243-2, circuit CPSA9 (VT/OG), harness side.

Are the resistances less than 3 ohms?

Yes
INSTALL a new power seat latch. REFER to Seat Latch — Third Row, Power in this section. TEST the system for normal operation.

No
REPAIR the affected circuit(s). TEST the system for normal operation.

AG5 CHECK THE SEAT LATCH MOTOR AND CIRCUIT FOR A SHORT TO GROUND

Disconnect: PFSM C4250A .
Measure the resistance between PFSM C4250A-3, circuit CPSA8 (GY/OG), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AG13 .

No
GO to AG6 .

AG6 CHECK THE SEAT LATCH MOTOR CIRCUIT FOR A SHORT TO GROUND

Disconnect: LH Latch Motor C4243 .

To access to the LH latch motor connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between PFSM C4250A-3, circuit CPSA8 (GY/OG), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new power seat latch. Refer to Seat Latch — Third Row, Power in this section. TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

AG7 CHECK THE SEAT LATCH SWITCH AND CIRCUITS FOR A SHORT TO GROUND

Disconnect: PFSM C4250A .

To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.

With the latch released, measure the resistance between PFSM C4250A-13, circuit CPSB0 (YE/OG), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AG9 .

No
GO to AG8 .

AG8 CHECK THE SEAT LATCH SWITCH CIRCUITS FOR A SHORT TO GROUND OR SHORT TOGETHER

Disconnect: LH Latch Switch C4241 .

To access to the LH latch switch connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between:

PFSM C4250A-13, circuit CPSB0 (YE/OG), harness side and ground.

PFSM C4250A-13, circuit CPSB0 (YE/OG), harness side and PFSM C4250A-12, circuit RPSB0 (BN/WH), harness side.

Are the resistances greater then 10,000 ohms?

AG9 CHECK THE SEAT LATCH SWITCH AND CIRCUITS FOR AN OPEN

Use a suitable tool and manually lock the latch.
With the latch locked, measure the resistance between PFSM C4250A-13, circuit CPSB0 (YE/OG), harness side and PFSM C4250A-12, circuit RPSB0 (BN/WH), harness side.

Is the resistance less than 3 ohms?

Yes
GO to AG11 .

No
GO to AG10 .

AG10 CHECK THE SEAT LATCH SWITCH CIRCUITS FOR AN OPEN

Disconnect: LH Latch Switch C4241 .

To access to the LH latch switch connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between:

PFSM C4250A-13, circuit CPSB0 (YE/OG), harness side and LH latch switch C4241-1, circuit CPSC0 (BU/GY), harness side.

PFSM C4250A-12, circuit RPSB0 (BN/WH), harness side and LH latch switch C4241-2, circuit RPSB0 (BN/WH), harness side.

Are the resistances less than 3 ohms?

AG11 CHECK THE SEAT LATCH SWITCH CIRCUIT FOR VOLTAGE AT THE PFSM

Connect: PFSM C4250A .
Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Back-probe PFSM C4250A and measure the voltage between PFSM C4250A-13, circuit CPSB0 (YE/OG), and PFSM C4250A-12, circuit RPSB0 (BN/WH).

Press the STOW button to release the latch and measure the voltage.
Is the voltage greater than 11 volts?

Yes
The latch assembly checks OK. GO to AG12 .

No
GO to AG13 .

AG12 IDENTIFY THE SEAT FUNCTION(S) USING THE TABLE AND DETERMINE THE DIAGNOSTIC DIRECTION

Reconnect all disconnected electrical connectors.
Operate the seat to each position (NORMAL, STOW, FOLD and TAILGATE) allowing the seat to complete each selection and note all resulting seat movements and seat positions obtained.
Compare the step results to the table and determine the diagnostic direction.

Originating Seat Position	Only Seat Position Obtained	Components and Circuits to Check
NORMAL	FOLD	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AI .
NORMAL	None (attempts power-stow seat motor movement but no power-fold seat motor [backrest] movement)	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AK .
STOW	FOLD	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AK .
STOW	None (power-fold seat motor [backrest] may attempt movement)	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AI .
FOLD	NORMAL	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AI .
FOLD	STOW	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AK .
TAILGATE	NORMAL	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AK .
TAILGATE	None (power-fold seat motor [backrest] attempts to operate, may require manual assistance)	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AI .

Does the seat operate correctly?

Yes
The fault is not present and cannot be recreated at this time. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. GO to AG13 .

No
To check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AI .

To check the power-fold seat motor (backrest), fold sensor and circuits, GO to Pinpoint Test AK .

AG13 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM

Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary.
Reconnect all the PFSM connectors.
Operate the seats and determine if the concern is still present.
Is the concern still present?

Pinpoint Test AH: Seat Latch Motor and Latch Switch Functional Test — RH Third Row Power Seat

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Latch release motor and switch
PFSM

PINPOINT TEST AH: SEAT LATCH MOTOR AND LATCH SWITCH FUNCTIONAL TEST — RH THIRD ROW POWER SEAT

NOTE: The demand lighting/battery saver system times-out after 10 minutes and disables the third row power seat operation. Meter voltage measurements may be inaccurate when this occurs, which could lead to misdiagnosis . To enable the accessory delay system during diagnosis and testing, close and open any vehicle door.

Test Step

Result / Action to Take

AH1 CONFIRM THE SYSTEM FUNCTIONAL TEST HAS BEEN COMPLETED

Verify the System Functional Test — Third Row Power Seat has been completed before testing the latch assembly.
Has the Functional Test been completed?

Yes
GO to AH2 .

No
CARRY OUT the Functional Test — Third Row Power Seat. GO to Pinpoint Test AF and return to this test only if directed to do so.

AH2 CHECK FOR AUDIBLE SEAT LATCH OPERATION

Select the RH seat switch position and press the NORMAL or FOLD button.
Press the STOW button and observe and listen for latch motor operation.
Does the latch motor operate or is audible?

Yes
GO to AH7 .

No
GO to AH3 .

AH3 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE SEAT LATCH MOTOR

Access the PFSM . If necessary, to release an inoperative latch or to reposition an inoperative power-stow motor, refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.
Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Connect a test lamp between C4250A-4, circuit CPSB9 (VT/BN) and C4250A-6, circuit CPSA9 (VT/OG) by back-probing the connector.

Press the STOW button and monitor the test lamp.
Does the test lamp illuminate momentarily when the STOW button is pressed?

Yes
GO to AH4 .

No
GO to AH5 .

AH4 CHECK THE SEAT LATCH MOTOR CIRCUITS FOR AN OPEN

Disconnect: PFSM C4250A .
Disconnect: RH Latch Motor C4244 .

To access to the RH latch motor connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between:

PFSM C4250A-4, circuit CPSB9 (VT/BN), harness side and RH latch motor C4244-1, circuit CPSB9 (VT/BN), harness side.

PFSM C4250A-6, circuit CPSA9 (VT/OG), harness side and RH latch motor C4244-2, circuit CPSA9 (VT/OG), harness side.

Are the resistances less than 3 ohms?

Yes
INSTALL a new power seat latch. Refer to Seat Latch — Third Row, Power in this section. TEST the system for normal operation.

No
REPAIR the affected circuit(s). TEST the system for normal operation.

AH5 CHECK THE SEAT LATCH MOTOR AND CIRCUIT FOR A SHORT TO GROUND

Disconnect: PFSM C4250A .
Measure the resistance between PFSM C4250A-4, circuit CPSB9 (VT/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AH13 .

No
GO to AH6 .

AH6 CHECK THE SEAT LATCH MOTOR CIRCUIT FOR A SHORT TO GROUND

Disconnect: RH Latch Motor C4244 .

To access to the RH latch motor connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between PFSM C4250A-4, circuit CPSB9 (VT/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new power seat latch. Refer to Seat Latch — Third Row, Power in this section. TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

AH7 CHECK THE SEAT LATCH SWITCH AND CIRCUITS FOR A SHORT TO GROUND

Disconnect: PFSM C4250A .

To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section.

With the latch released, measure the resistance between PFSM C4250A-11, circuit CPSC0 (BU/GY), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AH9 .

No
GO to AH8 .

AH8 CHECK THE SEAT LATCH SWITCH CIRCUITS FOR A SHORT TO GROUND OR SHORT TOGETHER

Disconnect: RH Latch Switch C4242 .

To access to the RH latch switch connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between:

PFSM C4250A-11, circuit CPSC0 (BU/GY), harness side and ground.

PFSM C4250A-11, circuit CPSC0 (BU/GY), harness side and PFSM C4250A-12, circuit RPSB0 (BN/WH), harness side.

Are the resistances greater then 10,000 ohms?

AH9 CHECK THE SEAT LATCH SWITCH AND CIRCUITS FOR AN OPEN

Use a suitable tool and manually lock the latch.
With the latch locked, measure the resistance between PFSM C4250A-11, circuit CPSC0 (BU/GY), harness side and PFSM C4250A-12, circuit RPSB0 (BN/WH), harness side.

Is the resistance less than 3 ohms?

Yes
GO to AH11 .

No
GO to AH10 .

AH10 CHECK THE SEAT LATCH SWITCH CIRCUITS FOR AN OPEN

Disconnect: RH Latch Switch C4242 .

To access to the RH latch switch connector, refer to the appropriate steps in Seat Latch — Third Row, Power in this section.

Measure the resistance between:

PFSM C4250A-11, circuit CPSC0 (BU/GY), harness side and RH latch switch C4242-1, circuit CPSC0 (BU/GY), harness side.

PFSM C4250A-12, circuit RPSB0 (BN/WH), harness side and RH latch switch C4242-2, circuit RPSB0 (BN/WH), harness side.

Are the resistances less than 3 ohms?

AH11 CHECK THE SEAT LATCH SWITCH CIRCUIT FOR VOLTAGE AT THE PFSM

Connect: PFSM C4250A .
Verify the vehicle is in PARK and the liftgate is open.
Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle.
Back-probe PFSM C4250A and measure the voltage between PFSM C4250A-11, circuit CPSC0 (BU/GY), and PFSM C4250A-12, circuit RPSB0 (BN/WH).

Press the STOW button to release the latch and measure the voltage.
Is the voltage greater than 11 volts?

Yes
The latch assembly checks OK. GO to AH12 .

No
GO to AH13 .

AH12 IDENTIFY THE SEAT FUNCTION(S) USING THE TABLE AND DETERMINE THE DIAGNOSTIC DIRECTION

Reconnect all disconnected electrical connectors.
Operate the seat to each position (NORMAL, STOW, FOLD and TAILGATE) allowing the seat to complete each selection and note all resulting seat movements and seat positions obtained.
Compare the step results to the table and determine the diagnostic direction.

Originating Seat Position	Only Seat Position Obtained	Components and Circuits to Check
NORMAL	FOLD	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AJ .
NORMAL	None (attempts power-stow seat motor movement but no power-fold seat motor [backrest] movement)	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AL .
STOW	FOLD	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AL .
STOW	None (power-fold seat motor [backrest] may attempt movement)	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AJ .
FOLD	NORMAL	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AJ .
FOLD	STOW	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AL .
TAILGATE	NORMAL	Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test AL .
TAILGATE	None (power-fold seat motor [backrest] attempts to operate, may require manual assistance)	Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AJ .

Does the seat operate correctly?

Yes
The fault is not present and cannot be recreated at this time. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. GO to AH13 .

No
To check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test AJ .

To check the power-fold seat motor (backrest), fold sensor and circuits, GO to Pinpoint Test AL .

AH13 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM

Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary.
Reconnect all the PFSM connectors.
Operate the seats and determine if the concern is still present.
Is the concern still present?

Pinpoint Test AI: Power-Stow Seat Motor and Sensor Functional Test — LH Third Row Power Seat

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The Power-Fold Seat Module (PFSM) supplies voltage and ground to the power-stow seat motor to move the seat to and from the STOW position when selected by the seat control switch. When STOW is selected from NORMAL or TAILGATE, the backrest folds forward to release the spring loaded headrest. If an obstruction is detected in the STOW axis of movement the seat stops, reverses movement a few inches and then stops again until the obstruction is removed. When the obstruction has been removed the seat control switch must be depressed again to reset the request. The seat goes to the power-stow seat motor home position (seat folded and latched to the floor) and then continues with the STOW request. If the PFSM detects an open or short in the power-stow seat motor circuitry, motor operation is disabled. If a short to ground is present the motor works in only one direction.

A Hall effect sensor is located inside each of the power-stow seat motor assemblies to detect power-stow seat motor movement and position to the PFSM . If the sensor does not detect motor movement during a request from the seat control switch, the PFSM disables the power-stow seat motor output. When the seat control switch is pressed again the seat moves in short increments indicating a fault with the sensor or circuitry.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Power-stow seat motor and sensor
PFSM

PINPOINT TEST AI: POWER-STOW SEAT MOTOR AND SENSOR FUNCTIONAL TEST — LH THIRD ROW POWER SEAT

NOTE: The demand lighting/battery saver system times-out after 10 minutes and disables the third row power seat operation. Meter voltage measurements may be inaccurate when this occurs, which could lead to misdiagnosis . To enable the accessory delay system during diagnosis and testing, close and open any vehicle door.

Test Step	Result / Action to Take
AI1 CONFIRM THE SYSTEM FUNCTIONAL TEST HAS BEEN COMPLETED
Verify the Functional Test — Third Row Power Seat has been completed before testing the power-stow seat motor and sensor. Has the Functional Test been completed?	Yes GO to AI2 . No CARRY OUT the Functional Test — Third Row Power Seat. GO to Pinpoint Test AF and return to this test only if directed to do so.
AI2 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE POWER-STOW SEAT MOTOR
Access the PFSM . To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section. NOTICE: Before moving the seat, make sure all parts are out from under it or damage can occur. Reposition the PFSM and wiring away from the seat so that the seat can be moved during testing without damaging the PFSM or wire harness. Detach the PFSM and wire harness completely from the LH load floor flapper panel. Lower the PFSM and wire harness to the floor in front of the seat. Before the seat is moved, make sure the wiring is clear from the pivot areas of the seat and can not be pinched or torn by seat movement. Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Connect a test lamp between PFSM C4250C-12, circuit CPSA2 (BU/GN) and PFSM C4250C-10, circuit CPSA3 (GN/OG), by back-probing the connector. Press the STOW button and monitor the test lamp. Does the test lamp illuminate (may be momentary) when the STOW button is pressed?	Yes GO to AI5 . No GO to AI3 .
AI3 CHECK THE LH POWER-STOW SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Disconnect: PFSM C4250C . Measure the resistance between: PFSM C4250C-12, circuit CPSA2 (BU/GN), harness side and ground. PFSM C4250C-10, circuit CPSA3 (GN/OG), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes GO to AI11 . No GO to AI4 .
AI4 CHECK THE LH POWER-STOW SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Disconnect: LH Power-Stow Seat Motor C4181 . Remove the rear quarter trim finish panel to access the LH power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Measure the resistance between: PFSM C4250C-12, circuit CPSA2 (BU/GN), harness side and ground. PFSM C4250C-10, circuit CPSA3 (GN/OG), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes INSTALL a new power-stow seat motor. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AI5 CHECK THE LH POWER-STOW SEAT MOTOR AND CIRCUITS FOR AN OPEN
Disconnect: PFSM C4250C . Measure the resistance between PFSM C4250C-12, circuit CPSA2 (BU/GN), harness side and PFSM C4250C-10, circuit CPSA3 (GN/OG), harness side. Is the resistance less than 3 ohms?	Yes GO to AI7 . No GO to AI6 .
AI6 CHECK THE POWER-STOW SEAT MOTOR CIRCUITS FOR AN OPEN
Disconnect: LH Power-Stow Seat Motor C4181 . Remove the rear quarter trim finish panel to access the LH power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Measure the resistance between: PFSM C4250C-12, circuit CPSA2 (BU/GN), harness side and LH power-stow seat motor C4181-3, circuit CPSA2 (BU/GN), harness side. PFSM C4250C-10, circuit CPSA3 (GN/OG), harness side and LH power-stow seat motor C4181-1, circuit CPSA3 (GN/OG), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-stow seat motor. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AI7 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE STOW SENSOR
Connect: PFSM C4250C . Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Measure the voltage between PFSM C4250C-2, circuit LPSA4 (VT/WH) and PFSM C4250C-5, circuit RPSA4 (YE/VT), by back-probing the connector. Is the voltage greater than 5 volts?	Yes GO to AI10 . No GO to AI8 .
AI8 CHECK THE LH POWER-STOW SEAT MOTOR SENSOR AND CIRCUIT FOR A SHORT TO GROUND
Disconnect: PFSM C4250C . Measure the resistance between PFSM C4250C-2, circuit LPSA4 (VT/WH), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AI11 . No GO to AI9 .
AI9 CHECK THE LH POWER-STOW SEAT MOTOR SENSOR CIRCUIT FOR A SHORT TO GROUND
Disconnect: LH Power-Stow Seat Motor C4181 . Remove the rear quarter trim finish panel to access the LH power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Measure the resistance between PFSM C4250C-2, circuit LPSA4 (VT/WH), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new power-stow seat motor assembly. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the circuit. TEST the system for normal operation.
AI10 CHECK THE LH POWER-STOW SEAT MOTOR SENSOR CIRCUITS FOR AN OPEN
Disconnect: LH Power-Stow Seat Motor C4181 . Remove the rear quarter trim finish panel to access the LH power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Disconnect: PFSM C4250C . Measure the resistance between: PFSM C4250C-2, circuit LPSA4 (VT/WH), harness side and LH power-stow seat motor C4181-2, circuit LPSA4 (VT/WH), harness side. PFSM C4250C-5, circuit RPSA4 (YE/VT), harness side and LH power-stow seat motor C4181-4, circuit RPSA4 (YE/VT), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-stow seat motor assembly. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AI11 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM
Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary. Reconnect all the PFSM connectors. Operate the seats and determine if the concern is still present. Is the concern still present?	Yes INSTALL a new PFSM . Refer to Power-Fold Seat Module (PFSM) in this section. TEST the system for normal operation. No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test AJ: Power-Stow Seat Motor and Sensor Functional Test — RH Third Row Power Seat

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Power-stow seat motor and sensor
PFSM

PINPOINT TEST AJ: POWER-STOW SEAT MOTOR AND SENSOR FUNCTIONAL TEST — RH THIRD ROW POWER SEAT

NOTE: The demand lighting/battery saver system times-out after 10 minutes and disables the third row power seat operation. Meter voltage measurements may be inaccurate when this occurs, which could lead to misdiagnosis . To enable the accessory delay system during diagnosis and testing, close and open any vehicle door.

Test Step	Result / Action to Take
AJ1 CONFIRM THE SYSTEM FUNCTIONAL TEST HAS BEEN COMPLETED
Verify the Functional Test — Third Row Power Seat has been completed before testing the power-stow seat motor and sensor. Has the Functional Test been completed?	Yes GO to AJ2 . No CARRY OUT the Functional Test — Third Row Power Seat. GO to Pinpoint Test AF and return to this test only if directed to do so.
AJ2 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE POWER-STOW SEAT MOTOR
Access the PFSM . To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section. Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Connect a test lamp between PFSM C4250C-14, circuit CPSB3 (BU/OG) and PFSM C4250C-13, circuit CPSB4 (YE/BU), by back-probing the connector. Press the STOW button and monitor the test lamp. Does the test lamp illuminate (may be momentary) when the STOW button is pressed?	Yes GO to AJ5 . No GO to AJ3 .
AJ3 CHECK THE POWER-STOW SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Disconnect: PFSM C4250C . Measure the resistance between: PFSM C4250C-14, circuit CPSB3 (BU/OG), harness side and ground. PFSM C4250C-13, circuit CPSB4 (YE/BU), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes GO to AJ11 . No GO to AJ4 .
AJ4 CHECK THE POWER-STOW SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Remove the rear quarter trim finish panel to access the power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Disconnect: RH Power-Stow Seat Motor C4182 . Measure the resistance between: PFSM C4250C-14, circuit CPSB3 (BU/OG), harness side and ground. PFSM C4250C-13, circuit CPSB4 (YE/BU), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes INSTALL a new power-stow seat motor. REFER to Power-Stow Seat Motor — Third Row in this section. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AJ5 CHECK THE POWER-STOW SEAT MOTOR AND CIRCUITS FOR AN OPEN
Disconnect: PFSM C4250C . Measure the resistance between PFSM C4250C-14, circuit CPSB3 (BU/OG), harness side and PFSM C4250C-13, circuit CPSB4 (YE/BU), harness side. Is the resistance less than 3 ohms?	Yes GO to AJ7 . No GO to AJ6 .
AJ6 CHECK THE POWER-STOW SEAT MOTOR CIRCUITS FOR AN OPEN
Disconnect: RH Power-Stow Seat Motor C4182 . Remove the rear quarter trim finish panel to access the RH power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Measure the resistance between: PFSM C4250C-14, circuit CPSB3 (BU/OG), harness side and RH power-stow seat motor C4182-3, circuit CPSB3 (BU/OG), harness side. PFSM C4250C-13, circuit CPSB4 (YE/BU), harness side and RH power-stow seat motor C4182-1, circuit CPSB4 (YE/BU), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-stow seat motor. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AJ7 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE STOW SENSOR
Connect: PFSM C4250C . Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Measure the voltage between PFSM C4250B-3, circuit LPSB5 (GN/WH) and PFSM C4250B-1, circuit RPSB5 (WH/BU), by back-probing the connector. Is the voltage greater than 5 volts?	Yes GO to AJ10 . No GO to AJ8 .
AJ8 CHECK THE STOW SENSOR AND CIRCUIT FOR A SHORT TO GROUND
Disconnect: PFSM C4250B . Measure the resistance between PFSM C4250B-3, circuit LPSB5 (GN/WH) , harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AJ11 . No GO to AJ9 .
AJ9 CHECK THE STOW SENSOR CIRCUIT FOR A SHORT TO GROUND
Remove the rear quarter trim finish panel to access the power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Disconnect: RH Power-Stow Seat Motor C4182 . Measure the resistance between PFSM C4250B-3, circuit LPSB5 (GN/WH) , harness side and ground. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new power-stow seat motor assembly. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the circuit. TEST the system for normal operation.
AJ10 CHECK THE STOW SENSOR CIRCUITS FOR AN OPEN
Remove the rear quarter trim finish panel to access the power-stow seat motor electrical connector. For additional information, refer to the exploded view in Section 501-05 . Disconnect: RH Power-Stow Seat Motor C4182 . Disconnect: PFSM C4250B . Measure the resistance between: PFSM C4250B-3, circuit LPSB5 (GN/WH), harness side and RH power-stow seat motor C4182-2, circuit LPSB5 (GN/WH), harness side. PFSM C4250B-1, circuit RPSB5 (WH/BU), harness side and RH power-stow seat motor C4182-4, circuit RPSB5 (WH/BU), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-stow seat motor assembly. REFER to Power-Stow Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AJ11 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM
Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary. Reconnect all the PFSM connectors. Operate the seats and determine if the concern is still present. Is the concern still present?	Yes INSTALL a new PFSM . Refer to Power-Fold Seat Module (PFSM) in this section. TEST the system for normal operation. No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test AK: Power-Fold Seat Motor (Backrest) and Sensor Functional Test — LH Third Row Power Seat

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

The Power-Fold Seat Module (PFSM) supplies voltage and ground to the power-fold seat motor to move the seat to and from the FOLD and NORMAL positions when selected by the seat control switch. When FOLD is selected the backrest folds forward and releases the spring loaded headrest. If an obstruction is detected in the FOLD/NORMAL axis of movement the seat stops, reverses movement a few inches and then stops again until the obstruction is removed. When the obstruction has been removed the seat control switch must be depressed again to reset the request. The seat goes to the power-fold seat motor home position (seat folded and latched to floor) and then continues with any seat position requested. If the PFSM detects a power-fold seat motor circuit fault (open or short), motor operation is disabled. If a short to ground is present the motor works in only one direction.

A Hall effect sensor is located inside each of the power-fold seat motor assemblies to detect motor movement and seat position to the PFSM . If the sensor does not detect motor movement during a request from the seat control switch, the PFSM disables the power-fold seat motor output.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Power-fold seat motor (backrest) and sensor
PFSM

PINPOINT TEST AK: POWER-FOLD SEAT MOTOR (BACKREST) AND SENSOR FUNCTIONAL TEST — LH THIRD ROW POWER SEAT

NOTE: The demand lighting/battery saver system times-out after 10 minutes and disables the third row power seat operation. Meter voltage measurements may be inaccurate when this occurs, which could lead to misdiagnosis . To enable the accessory delay system during diagnosis and testing, close and open any vehicle door.

Test Step	Result / Action to Take
AK1 CONFIRM THE FUNCTIONAL TEST HAS BEEN COMPLETED
Verify the Functional Test — Third Row Power Seat has been completed before testing the power-fold seat motor (backrest) and sensor. Has the Functional Test — Third Row Power Seat been completed?	Yes GO to AK2 . No CARRY OUT the Functional Test — Third Row Power Seat. GO to Pinpoint Test AF and return to this test only if directed to do so.
AK2 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE POWER-FOLD SEAT MOTOR
Access the PFSM . To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section. NOTICE: Before moving the seat, make sure all parts are out from under it or damage can occur. Reposition the PFSM and wiring away from the seat so that the seat can be moved during testing without damaging the PFSM or wire harness. Detach the PFSM and wire harness completely from the LH load floor flapper panel. Lower the PFSM and wire harness to the floor in front of the seat. Before the seat is moved, make sure the wiring is clear from the pivot areas of the seat and can not be pinched or torn by seat movement. Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Connect a test lamp between PFSM C4250C-8, circuit CPSA5 (BU/BN) and PFSM C4250C-9, circuit CPSA6 (VT), by back-probing the connector. Press the NORMAL button then the FOLD button, monitor the test lamp and allow the seat to complete any movement. Does the test lamp illuminate (may be momentary) when either button is pressed?	Yes GO to AK5 . No GO to AK3 .
AK3 CHECK THE POWER-FOLD SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Disconnect: PFSM C4250C . Measure the resistance between: PFSM C4250C-8, circuit CPSA5 (BU/BN), harness side and ground. PFSM C4250C-9, circuit CPSA6 (VT), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes GO to AK11 . No GO to AK4 .
AK4 CHECK THE POWER-FOLD SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Remove the backrest latch outer cover to gain access to the LH power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: LH Power-Fold Seat Motor C4245 . Measure the resistance between: PFSM C4250C-8, circuit CPSA5 (BU/BN), harness side and ground. PFSM C4250C-9, circuit CPSA6 (VT), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes INSTALL a new power-fold seat motor. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AK5 CHECK THE POWER-FOLD SEAT MOTOR AND CIRCUITS FOR AN OPEN
Disconnect: PFSM C4250C . Measure the resistance between PFSM C4250C-8, circuit CPSA5 (BU/BN), harness side and PFSM C4250C-9, circuit CPSA6 (VT), harness side. Typical motor resistance is 1.3 ohms. Is the resistance less than 3 ohms?	Yes GO to AK7 . No GO to AK6 .
AK6 CHECK THE POWER-FOLD SEAT MOTOR CIRCUITS FOR AN OPEN
Remove the backrest latch outer cover to gain access to the LH power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: LH Power-Fold Seat Motor C4245 . Measure the resistance between: PFSM C4250C-8, circuit CPSA5 (BU/BN), harness side and LH power-fold seat motor C4245-3, circuit CPSB6 (GY/BN), harness side. PFSM C4250C-9, circuit CPSA6 (VT), harness side and LH power-fold seat motor C4245-1, circuit CPSB7 (YE/GN), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-fold seat motor. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AK7 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE FOLD SENSOR
Connect: PFSM C4250C . Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Measure the voltage between PFSM C4250C-3, circuit LPSA7 (GN/BU) and PFSM C4250C-6, circuit RPSA7 (WH/VT), by back-probing the connector. Is the voltage greater than 5 volts?	Yes GO to AK10 . No GO to AK8 .
AK8 CHECK THE FOLD SENSOR AND CIRCUIT FOR A SHORT TO GROUND
Disconnect: PFSM C4250C . Measure the resistance between PFSM C4250C-3, circuit LPSA7 (GN/BU), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AK11 . No GO to AK9 .
AK9 CHECK THE FOLD SENSOR CIRCUIT FOR A SHORT TO GROUND
Remove the backrest latch outer cover to gain access to the power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: LH Power-Fold Seat Motor C4245 . Measure the resistance between PFSM C4250C-3, circuit LPSA7 (GN/BU), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new power-fold seat motor assembly. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the circuit. TEST the system for normal operation.
AK10 CHECK THE FOLD SENSOR CIRCUITS FOR AN OPEN
Remove the backrest latch outer cover to gain access to the power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: LH Power-Fold Seat Motor C4245 . Disconnect: PFSM C4250C . Measure the resistance between: PFSM C4250C-3, circuit LPSA7 (GN/BU), harness side and LH power-fold seat motor C4245-2, circuit LPSB8 (BN/YE), harness side. PFSM C4250C-6, circuit RPSA7 (WH/VT), harness side and LH power-fold seat motor C4245-4, circuit RPSB5 (WH/BU), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-fold seat motor assembly. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AK11 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM
Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary. Reconnect all the PFSM connectors. Operate the seats and determine if the concern is still present. Is the concern still present?	Yes INSTALL a new PFSM . Refer to Power-Fold Seat Module (PFSM) in this section. TEST the system for normal operation. No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test AL: Power-Fold Seat Motor (Backrest) and Sensor Functional Test — RH Third Row Power Seat

Refer to Wiring Diagrams Cell 120 , Power Seats for schematic and connector information.

Normal Operation

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Power-fold seat motor (backrest) and sensor
PFSM

PINPOINT TEST AL: POWER-FOLD SEAT MOTOR (BACKREST) AND SENSOR FUNCTIONAL TEST — RH THIRD ROW POWER SEAT

NOTE: The demand lighting/battery saver system times-out after 10 minutes and disables the third row power seat operation. Meter voltage measurements may be inaccurate when this occurs, which could lead to misdiagnosis . To enable the accessory delay system during diagnosis and testing, close and open any vehicle door.

Test Step	Result / Action to Take
AL1 CONFIRM THE FUNCTIONAL TEST HAS BEEN COMPLETED
Verify the Function — Third Row Power Seat Test has been completed before testing the power-fold seat motor (backrest) and sensor. Has the System Function Test been completed?	Yes GO to AL2 . No CARRY OUT the Functional Test — Third Row Power Seat. GO to Pinpoint Test AF and return to this test only if directed to do so.
AL2 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE POWER-FOLD SEAT MOTOR
Access the PFSM . To access the PFSM , refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this section. Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Connect a test lamp between PFSM C4250B-4, circuit CPSB6 (GY/BN) and PFSM C4250B-2, circuit CPSB7 (YE/GN), by back-probing the connector. Press the NORMAL button, then the FOLD button, monitor the test lamp and allow the seat to complete any movement. If the seat is already in the normal position, press the fold button instead. Does the test lamp illuminate (may be momentary) when either button is pressed?	Yes GO to AL5 . No GO to AL3 .
AL3 CHECK THE POWER-FOLD SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Disconnect: PFSM C4250B . Measure the resistance between: PFSM C4250B-4, circuit CPSB6 (GY/BN), harness side and ground. PFSM C4250B-2, circuit CPSB7 (YE/GN), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes GO to AL11 . No GO to AL4 .
AL4 CHECK THE POWER-STOW SEAT MOTOR AND CIRCUITS FOR A SHORT TO GROUND
Remove the backrest latch outer cover to gain access to the RH power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: RH Power-Fold Seat Motor C4246 . Measure the resistance between: PFSM C4250B-4, circuit CPSB6 (GY/BN), harness side and ground. PFSM C4250B-2, circuit CPSB7 (YE/GN), harness side and ground. Are the resistances greater than 10,000 ohms?	Yes INSTALL a new power-fold seat motor. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AL5 CHECK THE POWER-FOLD SEAT MOTOR AND CIRCUITS FOR AN OPEN
Disconnect: PFSM C4250B . Measure the resistance between PFSM C4250B-4, circuit CPSB6 (GY/BN), harness side and PFSM C4250B-2, circuit CPSB7 (YE/GN), harness side. Is the resistance less than 3 ohms?	Yes GO to AL7 . No GO to AL6 .
AL6 CHECK THE POWER-FOLD SEAT MOTOR CIRCUITS FOR AN OPEN
Remove the backrest latch outer cover to gain access to the RH power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: RH Power-Fold Seat Motor C4246 . Measure the resistance between: PFSM C4250B-4, circuit CPSB6 (GY/BN), harness side and RH power-fold seat motor C4246-3, circuit CPSB6 (GY/BN), harness side. PFSM C4250B-2, circuit CPSB7 (YE/GN), harness side and RH power-fold seat motor C4246-1, circuit CPSB7 (YE/GN), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-fold seat motor. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AL7 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE FOLD SENSOR
Connect: PFSM C4250B . Verify the vehicle is in PARK and the liftgate is open. Verify the interior map/reading lights are operative. If needed, close and open any door on the vehicle. Measure the voltage between PFSM C4250B-5, circuit LPSB8 (BN/YE) and PFSM C4250B-1, circuit RPSB5 (WH/BU), by back-probing the connector. Is the voltage greater than 5 volts?	Yes GO to AL10 . No GO to AL8 .
AL8 CHECK THE FOLD SENSOR AND CIRCUITS FOR A SHORT TO GROUND
Disconnect: PFSM C4250B . Measure the resistance between PFSM C4250B-5, circuit LPSB8 (BN/YE), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AL11 . No GO to AL9 .
AL9 CHECK THE FOLD SENSOR CIRCUIT FOR A SHORT TO GROUND
Remove the backrest latch outer cover to gain access to the power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: RH Power-Fold Seat Motor C4246 . Measure the resistance between PFSM C4250B-5, circuit LPSB8 (BN/YE), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new power-fold seat motor assembly. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the circuit. TEST the system for normal operation.
AL10 CHECK THE FOLD SENSOR CIRCUITS FOR AN OPEN
Remove the backrest latch outer cover to gain access to the power-fold seat motor electrical connector. Refer to Seat — Exploded View, Third Row in this section. Disconnect: RH Power-Fold Seat Motor C4246 . Disconnect: PFSM C4250B . Measure the resistance between: PFSM C4250B-5, circuit LPSB8 (BN/YE), harness side and RH power-fold seat motor C4246-2, circuit LPSB8 (BN/YE), harness side. PFSM C4250B-1, circuit RPSB5 (WH/BU), harness side and RH power-fold seat motor C4246-4, circuit RPSB5 (WH/BU), harness side. Are the resistances less than 3 ohms?	Yes INSTALL a new power-fold seat motor assembly. REFER to Power-Fold Seat Motor — Third Row in this section. TEST the system for normal operation. No REPAIR the affected circuit(s). TEST the system for normal operation.
AL11 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM
Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary. Reconnect all the PFSM connectors. Operate the seats and determine if the concern is still present. Is the concern still present?	Yes INSTALL a new PFSM . Refer to Power-Fold Seat Module (PFSM) in this section. TEST the system for normal operation. No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test AM: DTC B106E, B106F

Normal Operation

When a repetitive fault causing a circuit overload is detected on certain output circuits, the Driver Seat Module (DSM) disables the circuit by removing voltage, or ground, to the affected circuit. The circuit remains disabled until the fault is corrected and an on-demand self-test is run. When the on-demand self-test has been run after all faults have been corrected, any DTCs related to the fault are cleared.

DTC B106E (Solid State Driver Disabled Due to Short Circuit) — a continuous DTC that sets when the DSM has disabled a circuit due to a repetitive fault causing a circuit overload.
DTC B106F (Module Disabled Due to External Fault) — a continuous DTC that sets when one or more output functions are permanently disabled due to a repetitive circuit overload fault. DTC B106F is set with DTC B106E. When DTC B106F is present, the DSM must be replaced after the fault condition has been corrected.

This pinpoint test is intended to diagnose the following:

Output circuit short to ground or voltage
DSM

PINPOINT TEST AM: DTC B106E, B106F

NOTICE: If DTC B106F is present and the Driver Seat Module (DSM) is to be replaced, the fault condition must be corrected first. Failure to correct the fault condition first may cause damage to the new DSM , resulting in a repeat repair.

Test Step	Result / Action to Take
AM1 REVIEW THE DTCs
Review the DTCs from the DSM self-test. Is only DTC B106F present?	Yes INSTALL a new DSM . REFER to Driver Seat Module (DSM) in this section. TEST the system for normal operation. No CORRECT any DTCs present other than DTC B106E (DTC B106F may also be present). REFER to DTC Charts in this section. After the repair, GO to AM2 .
AM2 CARRY OUT THE DSM SELF-TEST
Carry out the DSM self-test. Is only DTC B106F present?	Yes INSTALL a new DSM . REFER to Driver Seat Module (DSM) in this section. TEST the system for normal operation. No The system is operating correctly at this time. The concern was caused by a fault in one of the output circuits, which is no longer present.

Pinpoint Test AN: DTC B1318

Refer to Wiring Diagrams Cell 123 , Memory Seats for schematic and connector information.

Normal Operation

DTC B1318 (Battery Voltage Low) — This DTC sets if the DSM detects voltage below 11 volts.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
High circuit resistance
DSM

PINPOINT TEST AN: DTC B1318

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Section 414-01 .

Test Step	Result / Action to Take
AN1 RECHECK THE DSM DTCs
Ignition ON. Enter the following diagnostic mode on the scan tool: DSM Self-Test . Clear the DTCs. Repeat the DSM self-test. Is DTC B1318 still present?	Yes GO to AN2 . No The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.
AN2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM
Enter the following diagnostic mode on the scan tool: PCM Self-Test . Retrieve the continuous memory DTCs from the PCM. Is DTC P0620, P0625, P0626 or P065B set in the PCM?	Yes REFER to Section 414-00 . No GO to AN3 .
AN3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
Ignition OFF. Check the battery condition and verify the battery is fully charged. Refer to Section 414-01 . Is the battery OK and fully charged?	Yes GO to AN4 . No REFER to Section 414-00 .
AN4 CHECK THE DSM VOLTAGE SUPPLY
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Driver Seat Side Air Bag C367 . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Measure and record the voltage at the battery. Disconnect: DSM C341A . Disconnect: DSM C341B . Ignition ON. Measure the voltage between the DSM C341A-1, circuit CBX05 (VT/RD), harness side and ground. Measure the voltage between the DSM C341B-1, circuit CBX03 (BU/RD), harness side and ground. Is the voltage within 0.2 volts of the recorded battery voltage?	Yes GO to AN5 . No REPAIR the circuit for high resistance. CLEAR the DTC. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
AN5 CHECK THE DSM GROUND CIRCUIT
Ignition OFF. Disconnect: Negative Battery Cable . Measure the resistance between the DSM C341A-2, circuit GD906 (BK/GY), harness side and ground. Measure the resistance between the DSM C341B-24, circuit GD905 (BK/GN), harness side and ground. Is the resistance less than 3 ohms?	Yes CONNECT the negative battery cable. GO to AN6 . No REPAIR the circuit for high resistance. CONNECT the negative battery cable. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
AN6 CHECK FOR CORRECT DSM OPERATION
Disconnect all the DSM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the DSM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes INSTALL a new DSM . REFER to Driver Seat Module (DSM) in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and driver seat safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AO: DTC U0140

Refer to Wiring Diagrams Cell 14 , Module Communications Network for schematic and connector information.

Normal Operation

The Driver Seat Module (DSM) and the Body Control Module (BCM) communicate using the Medium Speed Controller Area Network (MS-CAN). Messages are exchanged between the modules on the MS-CAN for the purposes of determining what functions are being carried out.

DTC U0140 (Lost Communication With Body Control Module ( GEM )) — set by the DSM whenever it has lost communication to the BCM for 15 seconds or longer as long as the module voltage is between 10 and 15 volts.

This pinpoint test is intended to diagnose the following:

Module communication
DSM
BCM

PINPOINT TEST AO: DTC U0140

Test Step	Result / Action to Take
AO1 VERIFY CUSTOMER CONCERN
Ignition ON. Verify there is an observable symptom present. Is an observable symptom present?	Yes GO to AO2 . No The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
AO2 CHECK THE COMMUNICATION NETWORK
Ignition ON. Enter the following diagnostic mode on the scan tool: Network Test . Carry out the network test. Does the DSM pass the network test?	Yes GO to AO3 . No REFER to Section 418-00 .
AO3 RETRIEVE THE RECORDED DTCs FROM THE SELF-TEST
Check for recorded DSM DTCs from the self-test. Is DTC B1317 or DTC B1318 recorded?	Yes For DTC B1317, GO to Pinpoint Test AD . For DTC B1318, GO to Pinpoint Test AN . No GO to AO4 .
AO4 RECHECK THE DSM DTCs
NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the PMI may not have been carried out. Clear the DTCs. Repeat the DSM self-test. Is DTC U0140 still present?	Yes GO to AO5 . No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
AO5 CHECK FOR DTC U0140/U0140:00 SET IN OTHER MODULES
Clear all DTCs. Ignition OFF. Ignition ON. Wait 10 seconds. Enter the following diagnostic mode on the scan tool: Self-Test . Retrieve the continuous memory DTCs from all modules. Is DTC U0140/U0140:00 set in other modules?	Yes INSTALL a new DSM . REFER to Driver Seat Module (DSM) in this section. No INSTALL a new BCM . REFER to Section 419-10 .

Pinpoint Test AQ: DTC B19A4

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to the driver seat backrest Thermo-Electric Device (TED). The DCSM also sends a speed control voltage signal to the TED to control blower speed.

DTC B19A4 (Driver Seat Back Blower Speed Short to Battery) — If the driver seat backrest blower speed circuit is shorted to voltage, the DCSM will shut down the driver seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST AQ: DTC B19A4

NOTICE: When taking measurements at Dual Climate Controlled Seat Module (DCSM) harness connectors, do not insert the electrical probes into the female connector pins. Inserting the probes into connector pins can cause intermittent or open electrical connections after reassembly resulting in Diagnostic Trouble Codes (DTCs) and system failure. Touching the tip of these connector pins is recommended instead.

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
AQ1 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Ignition ON. Measure voltage between C3265C-12, circuit CHS09 (GY), harness side and ground. Is any voltage present?	Yes GO to AQ2 . No GO to AQ3 .
AQ2 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Disconnect: Driver Backrest TED C3034 . Measure voltage between C3265C-12, circuit CHS09 (GY), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to AQ3 .
AQ3 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR FEED CIRCUITS FOR A SHORT TOGETHER
Ignition OFF. Disconnect: Driver Backrest TED C3034 . Measure the resistance between DCSM C3265C-12, circuit CHS09 (GY), harness side and C3265C-16, circuit CHS03 (GN/BN), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to AQ4 . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
AQ4 CHECK THE BACKREST TED RESISTANCE FOR AN INTERNAL SHORT
Measure the resistance between driver backrest TED C3034 pin 2 and pin 7, component side. Is the resistance greater than 2,000,000 ohms?	Yes INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No INSTALL a new backrest TED . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AR: DTC B19A5

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to the passenger seat cushion Thermo-Electric Device (TED). The DCSM also sends a speed control voltage signal to the TED to control blower speed.

DTC B19A5 (Passenger Seat Cushion Blower Speed Short to Ground) — If the passenger seat cushion blower speed circuit is shorted to ground, the DCSM will shut down the passenger seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST AR: DTC B19A5

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
AR1 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . Disconnect: Passenger Cushion TED C3040 . Measure the resistance between DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AR2 . No REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
AR2 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR GROUND CIRCUITS FOR A SHORT TOGETHER
Measure the resistance between DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and C3265C-7, circuit RHS08 (VT/WH), harness side. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new cushion TED . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AS: DTC B19A6

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to the passenger seat backrest Thermo-Electric Device (TED). The DCSM also sends a speed control voltage signal to the TED to control blower speed.

DTC B19A6 (Passenger Seat Back Blower Speed Short to Ground) — If the passenger seat backrest blower speed circuit is shorted to ground, the DCSM will shut down the passenger seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST AS: DTC B19A6

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
AS1 CHECK THE BACKREST TED BLOWER SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . Disconnect: Passenger Backrest TED C3039 . Measure the resistance between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AS2 . No REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
AS2 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR GROUND CIRCUITS FOR A SHORT TOGETHER
Measure the resistance between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and C3265C-7, circuit RHS08 (VT/WH), harness side. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new backrest TED . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AT: DTC B19A7

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to the driver seat cushion Thermo-Electric Device (TED). The DCSM also sends a speed control voltage signal to the TED to control blower speed.

DTC B19A7 (Driver Seat Cushion Blower Speed Short to Ground) — If the driver seat cushion blower speed circuit is shorted to ground, the DCSM will shut down the driver seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST AT: DTC B19A7

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
AT1 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . Disconnect: Driver Cushion TED C3035 . Measure the resistance between DCSM C3265C-11, circuit VHS18 (BN/GN), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AT2 . No REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
AT2 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR GROUND CIRCUITS FOR A SHORT TOGETHER
Measure the resistance between DCSM C3265C-11, circuit VHS18 (BN/GN), harness side and C3265C-15, circuit RHS03 (GY/OG), harness side. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new cushion TED . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AU: DTC B19A8

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

DTC B19A8 (Driver Seat Back Blower Speed Short to Ground) — If the driver seat backrest blower speed circuit is shorted to ground, the DCSM will shut down the driver seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST AU: DTC B19A8

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
AU1 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . Disconnect: Driver Backrest TED C3034 . Measure the resistance between DCSM C3265C-12, circuit CHS09 (GY), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to AU2 . No REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
AU2 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR GROUND CIRCUITS FOR A SHORT TOGETHER
Measure the resistance between DCSM C3265C-12, circuit CHS09 (GY), harness side and C3265C-15, circuit RHS03 (GY/OG), harness side. Is the resistance greater than 10,000 ohms?	Yes INSTALL a new backrest TED . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AV: DTC B2486

Refer to Wiring Diagrams Cell 123 , Memory Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) monitors the input voltage for correct operation. If the DCSM detects input voltage below 11 volts or above 15 volts, it will store DTC B2486 in memory. If DTC B2486 is set, the DCSM enters a standby mode and suspends the system outputs for both seat's operation until system voltage between 10 and 15 volts is restored and a climate controlled seat switch button is selected on.

DTC B2486 (Climate Control Seat Module Voltage Out of Range) — If the DCSM detects voltage below 11 volts or greater than 15 volts, the DTC is set.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
DCSM

PINPOINT TEST AV: DTC B2486

NOTE: DTCs B2486 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
AV1 RETRIEVE ALL CMDTCs IN ALL MODULES
Ignition ON. Enter the following diagnostic mode on the scan tool: Self Test — ALL CMDTCs . Is DTC B2486 or a low/high voltage DTC present in one or more modules?	Yes REFER to Section 414-00 to diagnose the charging system. No GO to AV2 .
AV2 CHECK THE BATTERY CONDITION
Ignition OFF. Carry out the Battery Condition Test. Refer to Section 414-01 . Did the battery pass the condition test?	Yes If the battery passed the condition test but required a recharge, REFER to Section 414-00 to diagnose the charging system. CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs). TEST the system for normal operation. If the battery passed the condition test and did not require a recharge, GO to AV3 . No INSTALL a new battery. CLEAR all CMDTCs . TEST the system for normal operation.
AV3 CHECK THE CHARGING SYSTEM VOLTAGE
NOTE: Do not allow the engine speed to increase above 2,000 rpm while performing this step or the generator may self excite and result in default charging system output voltage. If engine speed goes above 2,000 rpm, shut the vehicle OFF and restart the engine before performing this step. Start the engine. Measure voltage of the battery with and without a load on the charging system as follows: Turn off all accessories and run the engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage. Turn on headlights and HVAC fan on high and run engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage. Are the voltages between 13 and 15.2 volts?	Yes GO to AV4 . No REFER to Section 414-00 to diagnose the charging system. CLEAR all CMDTCs . TEST the system for normal operation.
AV4 CHECK FOR VOLTAGE TO THE DCSM
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265A . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Ignition ON. Measure voltage between: DCSM C3265A-E, circuit CBX01 (GN/RD), harness side and ground. DCSM C3265A-F, circuit CBX01 (GN/RD), harness side and ground. Are the voltages greater than 11 volts?	Yes GO to AV5 . No REPAIR the circuit in question. CLEAR all CMDTCs . REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
AV5 CHECK THE DCSM GROUND CIRCUIT FOR AN OPEN
Ignition OFF. Measure the resistance between DCSM C3265A-M, circuit GD903 (BK/WH), harness side and ground. Repeat this measurement while wiggling the harness. Is the resistance less than 3 ohms?	Yes GO to AV6 . No REPAIR the circuit. CLEAR all CMDTCs . REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
AV6 CHECK FOR CORRECT DCSM OPERATION
Check the harness and component side connectors for the following: corrosion. damaged pins. pushed-out pins. Connect: DCSM C3265A . Make sure the DCSM connector is seated correctly. Start the engine. Operate the climate controlled seats and verify system operation. Enter the following diagnostic mode on the scan tool: Self Test — DCSM . Is DTC B2486 still present?	Yes INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR all CMDTCs . REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR all CMDTCs . REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test AW: DTC B2729

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) monitors seat cushion temperature while it supplies voltage and ground to both blower motors. The DCSM also supplies a variable voltage signal to control the blower speed. Cabin air enters the blower through a filter attached to the Thermo-Electric Device (TED) housing. Heated or cooled air exits the TED and flows through a manifold attached to the foam pad.

DTC B2729 (Cushion Over-Temp Detected) — If the driver seat cushion TED temperature exceeds 70°C (158°F) in cool mode or 85°C (185°F) in heat mode for more than 4 seconds the DCSM shuts down the driver seat system and sets this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Restricted cushion TED filter
Crushed or restricted cushion foam pad
Crushed or restricted climate controlled seat manifold
Cushion TED assembly
Dual Climate Controlled Seat Module (DCSM)

PINPOINT TEST AW: DTC B2729

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AW1 CHECK THE DCSM FOR ON-DEMAND DTCs

Start the vehicle and set the driver seat to HIGH heat.
Enter the following diagnostic mode on the scan tool: Self Test — DCSM .
Was DTC B2729 retrieved on-demand during the self-test?

Yes
GO to AW2 .

No
GO to AW5 .

AW2 CHECK THE DRIVER SEAT CUSHION TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
Disconnect: Driver Seat Cushion TED C3035 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between:

DCSM C3265B-7, circuit VHS26 (VT), harness side and ground.

DCSM C3265B-8, circuit RHS05 (YE/VT), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AW3 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW3 CHECK THE DRIVER SEAT CUSHION TED THERMISTOR AND WIRING

Connect: Driver Seat Cushion TED C3035 .
Measure the resistance between DCSM C3265B-7, circuit VHS26 (VT), harness side and DCSM C3265B-8, circuit RHS05 (YE/VT), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to AW18 .

No
GO to AW4 .

AW4 CHECK THE DRIVER SEAT CUSHION TED THERMISTOR

Disconnect: Driver Seat Cushion TED C3035 .
Measure the resistance between driver seat cushion TED C3035 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS26 (VT) or RHS05 (YE/VT) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new driver seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW5 CONFIRM THE FAULT WHILE MONITORING THE DCSM SEAT BACK THERMAL ELECTRIC DEVICE TEMPERATURE (BK_TEMP) AND SEAT CUSHION THERMAL ELECTRIC DEVICE TEMPERATURE (CSHTEMP) PIDs

Set the driver seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Enter the following diagnostic mode on the scan tool: DataLogger - DCSM .
Monitor the DCSM PIDs BK_TEMP and CSHTEMP.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault.
Attempt to recreate the fault. Start the vehicle and set the driver seat to HIGH heat for at least 15 minutes while occupying the seat.
Do the PIDs increase incrementally (gradually) and stay within 15°C (27°F) of each other?

Yes
Fault not present at this time. Fault may have been set due to a past failure, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive passenger compartment temperature. CLEAR the DTCs. REPEAT the self-test.

No
If the CSHTEMP PID increases incrementally and is greater than 15°C (27°F) of the BK_TEMP PID, GO to AW6 .

If the CSHTEMP PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15°C (27°F) of the BK_TEMP PID, GO to AW16 .

AW6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS

With the engine running, set both front seats to HIGH cool.
Note the airflow exhausting from the driver seat cushion TED and compare it to the airflow exhausting from the passenger seat cushion TED .
Carry out a wiggle test of the wire harnesses between the DCSM and the driver seat cushion TED while monitoring blower operation of the TED . The blower should operate consistently and not change speeds
Is the airflow exhausting from the driver seat cushion TED comparable to the airflow exhausting from the passenger seat cushion TED with no change in operation when carrying out the wiggle test?

Yes
GO to AW7 .

No
If the airflow exhausting from the driver seat cushion is not comparable to the airflow exhausting from the passenger seat cushion , GO to AW8 .

If the driver seat cushion blower operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault. CLEAR the DTCs. REPEAT the self-test.

AW7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED

Note the airflow exhausting from the driver seat cushion TED with the driver seat occupied and compare it to the airflow exhausting from the passenger seat cushion TED with the passenger seat occupied.
Is the airflow exhausting from the driver seat cushion TED comparable to the airflow exhausting from the passenger seat cushion TED ?

Yes
GO to AW16 .

No
INSTALL a new driver seat cushion foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test.

AW8 CHECK THE DRIVER SEAT CUSHION BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Ignition OFF.
Inspect the blower of the driver seat cushion TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. CLEAR the DTCs. REPEAT the self-test.

No
GO to AW9 .

AW9 CHECK THE DRIVER SEAT CUSHION BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265C .
Disconnect: Driver Seat Cushion TED C3035 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265C-11, circuit VHS18 (BN/GN), harness side and driver seat cushion TED C3035-7, circuit VHS18 (BN/GN), harness side.

Is the resistance less than 3 ohms?

Yes
GO to AW10 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW10 CHECK THE DRIVER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO VOLTAGE

Ignition ON.
Measure the voltage between DCSM C3265C-15, circuit RHS03 (GY/OG), harness side and ground.

Is any voltage present?

AW11 CHECK THE DRIVER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AW12 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW12 CHECK THE DRIVER SEAT CUSHION BLOWER CIRCUITS FOR AN OPEN

Measure the resistance between:

DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and driver seat cushion TED C3035-2, circuit CHS03 (GN/BN), harness side.

DCSM C3265C-15, circuit RHS03 (GY/OG), harness side and driver seat cushion TED C3035-4, circuit RHS03 (GY/OG), harness side.

Are the resistances less than 3 ohms?

Yes
GO to AW13 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW13 CHECK THE DRIVER SEAT CUSHION BLOWER RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between driver seat cushion TED C3035 pin 2 and pin 4, component side.

Is the resistance between 4,000 ohms and 10,000 ohms?

Yes
GO to AW14 .

No
INSTALL a new driver seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW14 CHECK THE DRIVER SEAT CUSHION BLOWER SPEED CONTROL RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between driver seat cushion TED C3035 pin 7 and pin 4, component side.

Is the resistance between 240K ohms and 400K ohms?

Yes
GO to AW15 .

No
INSTALL a new driver seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW15 CHECK THE DRIVER SEAT CUSHION TED INSTALLATION AND FOR CRUSHED SEAT CUSHION

Ignition OFF.
Remove the driver seat. Refer to Seat — Front in this section.
Remove the driver seat cushion cover. Refer to Seat Cushion Cover — Front in this section.
Inspect the driver seat cushion for the following:

Is the driver seat cushion TED correctly installed?

Is the driver seat cushion seat cushion foam pad crushed or restricted?

Is the driver seat cushion climate controlled seat manifold crushed or restricted?

Is the driver seat cushion TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
INSTALL the driver seat cushion cover and seat and GO to AW18 .

No
CORRECTLY install the driver seat cushion or INSTALL a new driver seat cushion foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REFER to Section 414-01 . CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW16 CHECK THE DRIVER SEAT CUSHION TED THERMISTOR AND WIRING

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265B-7, circuit VHS26 (VT), harness side and C3265B-8 circuit RHS05 (YE/VT), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to AW18 .

No
GO to AW17 .

AW17 CHECK THE DRIVER SEAT CUSHION TED THERMISTOR

Measure the resistance between driver seat cushion TED C3035 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS26 (VT) or RHS05 (YE/VT) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW18 CHECK THE DRIVER SEAT CUSHION TED HEATING/COOLING CIRCUITRY CURRENT DRAW

Connect: All DCSM , TED and body harness-to-seat harness connectors .
NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete.
NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the Vehicle Measurement Module available for use with Integrated Diagnostic System (IDS). If these are unavailable, the inductive current probe feature from a battery tester may be substituted.
Place an inductive current probe around circuit CHS02 (YE/BU) near DCSM C3265A-G and monitor the current draw.
Start the vehicle and set the driver seat to HIGH heat.
Is the current draw less than 11 amps?

Yes
GO to AW19 .

No
INSTALL a new driver seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW19 CHECK RESISTANCE OF THE DRIVER SEAT CUSHION TED AND WIRING

Ignition OFF.
Disconnect: DCSM C3265A .
Measure the resistance between DCSM C3265A-G circuit CHS02 (YE/BU), harness side and C3265A-H, circuit RHS02 (BU/OG), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AW21 .

No
GO to AW20 .

AW20 CHECK THE RESISTANCE OF THE DRIVER SEAT CUSHION TED

Disconnect: Driver Seat Cushion TED C3035 .
Measure the resistance between driver seat cushion TED C3035 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR circuit CHS02 (YE/BU) or RHS02 (BU/OG) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new driver seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AW21 CHECK FOR CORRECT DCSM OPERATION

Inspect the DCSM and driver seat cushion TED harness and component side connectors and the body harness-to-seat harness connectors for:

corrosion

damaged pins

pushed-out pins

Connect: All DCSM , TED and Body Harness-to-Seat Harness Connectors .
Make sure the connectors are seated correctly.
Start the engine.
Set the driver seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Attempt to recreate the fault. With the engine still running set the driver seat to HIGH heat for at least 15 minutes.
Is the concern still present?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. REPEAT the self-test. TEST the system for normal operation.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

Pinpoint Test AX: DTC B272A

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

DTC B272A (Passenger Cushion Over-Temp Detected) — If the passenger seat cushion TED temperature exceeds 70°C (158°F) in cool mode or 85°C (185°F) in heat mode for more than 4 seconds the DCSM shuts down the passenger seat system and sets this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Restricted cushion TED filter
Crushed or restricted cushion foam pad
Crushed or restricted climate controlled seat manifold
Cushion TED assembly
DCSM

PINPOINT TEST AX: DTC B272A

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AX1 CHECK THE DCSM FOR ON-DEMAND DTCs

Start the vehicle and set the passenger seat to HIGH heat.
Enter the following diagnostic mode on the scan tool: Self Test — DCSM .
Was DTC B272A retrieved on-demand during the self-test?

Yes
GO to AX2 .

No
GO to AX5 .

AX2 CHECK THE PASSENGER SEAT CUSHION TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
Disconnect: Passenger Seat Cushion TED C3040 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between:

DCSM C3265B-2, circuit VHS27 (WH/OG), harness side and ground.

DCSM C3265B-3, circuit RHS10 (BU/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AX3 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX3 CHECK THE PASSENGER SEAT CUSHION TED THERMISTOR AND WIRING

Connect: Passenger Seat Cushion TED C3040 .
Measure the resistance between DCSM C3265B-2, circuit VHS27 (WH/OG), harness side and DCSM C3265B-3, circuit RHS10 (BU/OG), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to AX18 .

No
GO to AX4 .

AX4 CHECK THE PASSENGER SEAT CUSHION TED THERMISTOR

Disconnect: Passenger Seat Cushion TED C3040 .
Measure the resistance between passenger seat cushion TED C3040 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS27 (WH/OG) or RHS10 (BU/OG) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new passenger seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX5 CONFIRM THE FAULT WHILE MONITORING THE DCSM SEAT BACK THERMAL ELECTRIC DEVICE TEMPERATURE (PBKTEMP) AND SEAT CUSHION THERMAL ELECTRIC DEVICE TEMPERATURE (PCSHTEMP) PIDs

Set the passenger seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Enter the following diagnostic mode on the scan tool: DataLogger - DCSM .
Monitor the DCSM PIDs PBKTEMP and PCSHTEMP.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault.
Attempt to recreate the fault. Start the vehicle and set the passenger seat to HIGH heat for at least 15 minutes while occupying the seat.
Do the PIDs increase incrementally (gradually) and stay within 15°C (27°F) of each other?

Yes
Fault not present at this time. Fault may have been set due to a past failure, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive passenger compartment temperature. CLEAR the DTCs. REPEAT the self-test.

No
If the PCSHTEMP PID increases incrementally and is greater than 15°C (27°F) of the PBKTEMP PID, GO to AX6 .

If the PCSHTEMP PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15°C (27°F) of the PBKTEMP PID, GO to AX16 .

AX6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS

With the engine running, set both front seats to HIGH cool.
Note the airflow exhausting from the passenger seat cushion TED and compare it to the airflow exhausting from the driver seat cushion TED .
Carry out a wiggle test of the wire harnesses between the DCSM and the passenger seat cushion TED while monitoring blower operation of the TED . The blower should operate consistently and not change speeds
Is the airflow exhausting from the passenger seat cushion TED comparable to the airflow exhausting from the driver seat cushion TED with no change in operation when carrying out the wiggle test?

Yes
GO to AX7 .

No
If the airflow exhausting from the passenger seat cushion is not comparable to the airflow exhausting from the driver seat cushion , GO to AX8 .

If the passenger seat cushion blower operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault. CLEAR the DTCs. REPEAT the self-test.

AX7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED

Note the airflow exhausting from the passenger seat cushion TED with the passenger seat occupied and compare it to the airflow exhausting from the driver seat cushion TED with the driver seat occupied.
Is the airflow exhausting from the passenger seat cushion TED comparable to the airflow exhausting from the driver seat cushion TED ?

Yes
GO to AX16 .

No
INSTALL a new passenger seat cushion foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test.

AX8 CHECK THE PASSENGER SEAT CUSHION BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Ignition OFF.
Inspect the blower of the passenger seat cushion TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. CLEAR the DTCs. REPEAT the self-test.

No
GO to AX9 .

AX9 CHECK THE PASSENGER SEAT CUSHION BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265C .
Disconnect: Passenger Seat Cushion TED C3040 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and passenger seat cushion TED C3040-7, circuit VHS23 (BN/BU), harness side.

Is the resistance less than 3 ohms?

Yes
GO to AX10 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX10 CHECK THE PASSENGER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO VOLTAGE

Ignition ON.
Measure the voltage between DCSM C3265C-7, circuit RHS08 (VT/WH), harness side and ground.

Is any voltage present?

AX11 CHECK THE PASSENGER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AX12 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX12 CHECK THE PASSENGER SEAT CUSHION BLOWER CIRCUITS FOR AN OPEN

Measure the resistance between:

DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and passenger seat cushion TED C3040-2, circuit CHS08 (BN/YE), harness side.

DCSM C3265C-7, circuit RHS08 (VT/WH), harness side and passenger seat cushion TED C3040-4, circuit RHS08 (VT/WH), harness side.

Are the resistances less than 3 ohms?

Yes
GO to AX13 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX13 CHECK THE PASSENGER SEAT CUSHION BLOWER RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between passenger seat cushion TED C3040 pin 2 and pin 4, component side.

Is the resistance between 4,000 ohms and 10,000 ohms?

Yes
GO to AX14 .

No
INSTALL a new passenger seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX14 CHECK THE PASSENGER SEAT CUSHION BLOWER SPEED CONTROL RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between passenger seat cushion TED C3040 pin 7 and pin 4, component side.

Is the resistance between 240K ohms and 400K ohms?

Yes
GO to AX15 .

No
INSTALL a new passenger seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX15 CHECK THE PASSENGER SEAT CUSHION TED INSTALLATION AND FOR CRUSHED SEAT CUSHION

Ignition OFF.
Remove the passenger seat. Refer to Seat — Front in this section.
Remove the passenger seat cushion cover. Refer to Seat Cushion Cover — Front in this section.
Inspect the passenger seat cushion for the following:

Is the passenger seat cushion TED correctly installed?

Is the passenger seat cushion seat cushion foam pad crushed or restricted?

Is the passenger seat cushion climate controlled seat manifold crushed or restricted?

Is the passenger seat cushion TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
INSTALL the passenger seat cushion cover and seat and GO to AX18 .

No
CORRECTLY install the passenger seat cushion or INSTALL a new passenger seat cushion foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REFER to Section 414-01 . CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX16 CHECK THE PASSENGER SEAT CUSHION TED THERMISTOR AND WIRING

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265B-2, circuit VHS27 (WH/OG), harness side and C3265B-3 circuit RHS10 (BU/OG), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to AX18 .

No
GO to AX17 .

AX17 CHECK THE PASSENGER SEAT CUSHION TED THERMISTOR

Measure the resistance between passenger seat cushion TED C3040 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS27 (WH/OG) or RHS10 (BU/OG) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX18 CHECK THE PASSENGER SEAT CUSHION TED HEATING/COOLING CIRCUITRY CURRENT DRAW

Connect: All DCSM , TED and Body Harness-to-Seat Harness Connectors .
NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete.
NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the Vehicle Measurement Module available for use with Integrated Diagnostic System (IDS). If these are unavailable, the inductive current probe feature from a battery tester may be substituted.
Place an inductive current probe around circuit CHS07 (GY/BU) near DCSM C3265A-A and monitor the current draw.
Start the vehicle and set the passenger seat to HIGH heat.
Is the current draw less than 11 amps?

Yes
GO to AX19 .

No
INSTALL a new passenger seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX19 CHECK RESISTANCE OF THE PASSENGER SEAT CUSHION TED AND WIRING

Ignition OFF.
Disconnect: DCSM C3265A .
Measure the resistance between DCSM C3265A-A circuit CHS07 (GY/BU), harness side and C3265A-B, circuit RHS07 (BU), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AX21 .

No
GO to AX20 .

AX20 CHECK THE RESISTANCE OF THE PASSENGER SEAT CUSHION TED

Disconnect: Passenger Seat Cushion TED C3040 .
Measure the resistance between passenger seat cushion TED C3040 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR circuit CHS07 (GY/BU) or RHS07 (BU) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new passenger seat cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AX21 CHECK FOR CORRECT DCSM OPERATION

Inspect the DCSM and passenger seat cushion TED harness and component side connectors and the body harness-to-seat harness connectors for:

corrosion

damaged pins

pushed-out pins

Connect: All DCSM , TED and Body Harness-to-Seat Harness Connectors .
Make sure the connectors are seated correctly.
Start the engine.
Set the passenger seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Attempt to recreate the fault. With the engine still running set the passenger seat to HIGH heat for at least 15 minutes.
Is the concern still present?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. REPEAT the self-test. TEST the system for normal operation.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

Pinpoint Test AY: DTC B272B

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) monitors seat backrest temperature while it supplies voltage and ground to both blower motors. The DCSM also supplies a variable voltage signal to control the blower speed. Cabin air enters the blower through a filter attached to the Thermo-Electric Device (TED) housing. Heated or cooled air exits the TED and flows through a manifold attached to the foam pad.

DTC B272B (Passenger Back Over-Temp Detected) — If the passenger seat backrest TED temperature exceeds 70°C (158°F) in cool mode or 85°C (185°F) in heat mode for more than 4 seconds the DCSM shuts down the passenger seat system and sets this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Restricted backrest TED filter
Crushed or restricted backrest foam pad
Crushed or restricted climate controlled seat manifold
Backrest TED assembly
DCSM

PINPOINT TEST AY: DTC B272B

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AY1 CHECK THE DCSM FOR ON-DEMAND DTCs

Start the vehicle and set the passenger seat to HIGH heat.
Enter the following diagnostic mode on the scan tool: Self Test — DCSM .
Was DTC B272B retrieved on-demand during the self-test?

Yes
GO to AY2 .

No
GO to AY5 .

AY2 CHECK THE PASSENGER SEAT BACKREST TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
Disconnect: Passenger Seat Backrest TED C3039 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between:

DCSM C3265B-4, circuit VHS36 (YE/BU), harness side and ground.

DCSM C3265B-5, circuit RHS20 (GN/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AY3 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY3 CHECK THE PASSENGER SEAT BACKREST TED THERMISTOR AND WIRING

Connect: Passenger Seat Backrest TED C3039 .
Measure the resistance between DCSM C3265B-4, circuit VHS36 (YE/BU), harness side and DCSM C3265B-5, circuit RHS20 (GN/BU), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to AY18 .

No
GO to AY4 .

AY4 CHECK THE PASSENGER SEAT BACKREST TED THERMISTOR

Disconnect: Passenger Seat Backrest TED C3039 .
Measure the resistance between passenger seat backrest TED C3039 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS36 (YE/BU) or RHS20 (GN/BU) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new passenger seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY5 CONFIRM THE FAULT WHILE MONITORING THE DCSM SEAT BACK THERMAL ELECTRIC DEVICE TEMPERATURE (PBKTEMP) AND SEAT CUSHION THERMAL ELECTRIC DEVICE TEMPERATURE (PCSHTEMP) PIDs

Set the passenger seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Enter the following diagnostic mode on the scan tool: DataLogger - DCSM .
Monitor the DCSM PIDs PBKTEMP and PCSHTEMP.
NOTE: A crushed seat backrest foam pad or a crushed climate controlled seat manifold may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault.
Attempt to recreate the fault. Start the vehicle and set the passenger seat to HIGH heat for at least 15 minutes while occupying the seat.
Do the PIDs increase incrementally (gradually) and stay within 15°C (27°F) of each other?

Yes
Fault not present at this time. Fault may have been set due to a past failure, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive passenger compartment temperature. CLEAR the DTCs. REPEAT the self-test.

No
If the PBKTEMP PID increases incrementally and is greater than 15°C (27°F) of the PCSHTEMP PID, GO to AY6 .

If the PBKTEMP PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15°C (27°F) of the PCSHTEMP PID, GO to AY16 .

AY6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS

With the engine running, set both front seats to HIGH cool.
Note the airflow exhausting from the passenger seat backrest TED and compare it to the airflow exhausting from the driver seat backrest TED .
Carry out a wiggle test of the wire harnesses between the DCSM and the passenger seat backrest TED while monitoring blower operation of the TED . The blower should operate consistently and not change speeds
Is the airflow exhausting from the passenger seat backrest TED comparable to the airflow exhausting from the driver seat backrest TED with no change in operation when carrying out the wiggle test?

Yes
GO to AY7 .

No
If the airflow exhausting from the passenger seat backrest is not comparable to the airflow exhausting from the driver seat backrest , GO to AY8 .

If the passenger seat backrest blower operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault. CLEAR the DTCs. REPEAT the self-test.

AY7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED

Note the airflow exhausting from the passenger seat backrest TED with the passenger seat occupied and compare it to the airflow exhausting from the driver seat backrest TED with the driver seat occupied.
Is the airflow exhausting from the passenger seat backrest TED comparable to the airflow exhausting from the driver seat backrest TED ?

Yes
GO to AY16 .

No
INSTALL a new passenger seat backrest foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test.

AY8 CHECK THE PASSENGER SEAT BACKREST BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Ignition OFF.
Inspect the blower of the passenger seat backrest TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. CLEAR the DTCs. REPEAT the self-test.

No
GO to AY9 .

AY9 CHECK THE PASSENGER SEAT BACKREST BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265C .
Disconnect: Passenger Seat Backrest TED C3039 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and passenger seat backrest TED C3039-7, circuit VHS16 (BU/GN), harness side.

Is the resistance less than 3 ohms?

Yes
GO to AY10 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY10 CHECK THE PASSENGER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO VOLTAGE

Ignition ON.
Measure the voltage between DCSM C3265C-7, circuit RHS08 (VT/WH), harness side and ground.

Is any voltage present?

AY11 CHECK THE PASSENGER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AY12 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY12 CHECK THE PASSENGER SEAT BACKREST BLOWER CIRCUITS FOR AN OPEN

Measure the resistance between:

DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and passenger seat backrest TED C3039-2, circuit CHS03 (GN/BN), harness side.

DCSM C3265C-7, circuit RHS08 (VT/WH), harness side and passenger seat backrest TED C3039-4, circuit RHS03 (GY/OG), harness side.

Are the resistances less than 3 ohms?

Yes
GO to AY13 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY13 CHECK THE PASSENGER SEAT BACKREST BLOWER RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between passenger seat backrest TED C3039 pin 2 and pin 4, component side.

Is the resistance between 4,000 ohms and 10,000 ohms?

Yes
GO to AY14 .

No
INSTALL a new passenger seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY14 CHECK THE PASSENGER SEAT BACKREST BLOWER SPEED CONTROL RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between passenger seat backrest TED C3039 pin 7 and pin 4, component side.

Is the resistance between 240K ohms and 400K ohms?

Yes
GO to AY15 .

No
INSTALL a new passenger seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY15 CHECK THE PASSENGER SEAT BACKREST TED INSTALLATION AND FOR CRUSHED SEAT BACKREST

Ignition OFF.
Remove the passenger seat. Refer to Seat — Front in this section.
Remove the passenger seat backrest cover. Refer to Seat Backrest Cover — Front in this section.
Inspect the passenger seat backrest for the following:

Is the passenger seat backrest TED correctly installed?

Is the passenger seat backrest foam pad crushed or restricted?

Is the passenger seat backrest climate controlled seat manifold crushed or restricted?

Is the passenger seat backrest TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
INSTALL the passenger seat backrest cover and seat and GO to AY18 .

No
CORRECTLY install the passenger seat backrest or INSTALL a new passenger seat backrest foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REFER to Section 414-01 . CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY16 CHECK THE PASSENGER SEAT BACKREST TED THERMISTOR AND WIRING

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265B-4, circuit VHS36 (YE/BU), harness side and C3265B-5 circuit RHS20 (GN/BU), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to AY18 .

No
GO to AY17 .

AY17 CHECK THE PASSENGER SEAT BACKREST TED THERMISTOR

Measure the resistance between passenger seat backrest TED C3039 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS35 (VT/OG) or RHS15 (GY/BN) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY18 CHECK THE PASSENGER SEAT BACKREST TED HEATING/COOLING CIRCUITRY CURRENT DRAW

Connect: All DCSM , TED and Body Harness-to-Seat Harness Connectors .
NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete.
NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the Vehicle Measurement Module available for use with Integrated Diagnostic System (IDS). If these are unavailable, the inductive current probe feature from a battery tester may be substituted.
Place an inductive current probe around circuit CHS06 (BU/BN) near DCSM C3265A-C and monitor the current draw.
Start the vehicle and set the passenger seat to HIGH heat.
Is the current draw less than 11 amps?

Yes
GO to AY19 .

No
INSTALL a new passenger seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY19 CHECK RESISTANCE OF THE PASSENGER SEAT BACKREST TED AND WIRING

Ignition OFF.
Disconnect: DCSM C3265A .
Measure the resistance between DCSM C3265A-C circuit CHS06 (BU/BN), harness side and C3265A-D, circuit RHS06 (WH), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AY21 .

No
GO to AY20 .

AY20 CHECK THE RESISTANCE OF THE PASSENGER SEAT BACKREST TED

Disconnect: Passenger Seat Backrest TED C3039 .
Measure the resistance between passenger seat backrest TED C3039 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR circuit CHS01 (GY/VT) or RHS01 (WH/VT) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new passenger seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

AY21 CHECK FOR CORRECT DCSM OPERATION

Inspect the DCSM and passenger seat backrest TED harness and component side connectors and the body harness-to-seat harness connectors for:

corrosion

damaged pins

pushed-out pins

Connect: All DCSM , TED and Body Harness-to-Seat Harness Connectors .
Make sure the connectors are seated correctly.
Start the engine.
Set the passenger seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Attempt to recreate the fault. With the engine still running set the passenger seat to HIGH heat for at least 15 minutes.
Is the concern still present?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. REPEAT the self-test. TEST the system for normal operation.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

Pinpoint Test AZ: DTC B272C

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) is supplied voltage at all times, but the climate controlled seat system only operates with the engine running. The system can be operated with the ignition ON engine OFF by using a scan tool to bypass the climate controlled seat buttons on the touchscreen interface. When commanding a heat or cool mode operation in this manner, the climate controlled seat system only operates in 15 second intervals. Both voltage supply circuits are spliced together internal to the DCSM , so if one circuit becomes open, both seats can still be operated. However, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat is disabled by the DCSM .

The seat cushion is equipped with a Thermo-Electric Device (TED) assembly that includes a seat blower (fan motor, serviced as an assembly with the TED ). Similarly, the seat backrest is also equipped with its own TED assembly with blower. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once the system is activated, the DCSM uses a set of flexible algorithms to control the heating/cooling modes and the blower speed dependant on the commanded climate controlled seat settings.

A differential fault occurs when the cushion and backrest TEDs on an affected seat are reporting very different temperatures to the DCSM . This may result from an air flow restriction or a circuit fault of either TED area. If a TED and manifold is clear of obstruction and is operational, check the other TED and circuitry on the seat. It is important to note that a TED with a higher temperature may be operating correctly and not the area of concern. The other TED may be indicating a much lower temperature, causing the DTC to set.

DTC B272C (Driver Differential Temperature Fault) — If there is a temperature differential between the driver backrest and cushion TED of 60°C (108°F) or more for more than 4 seconds, the TED is disconnected or the duct is blocked, this DTC sets. When this happens the first time in a key cycle, the DCSM puts the driver seat system into recovery mode (see Principles of Operation). If the system is able to recover, it functions normally. If the system is able to recover and it occurs a second time in the same key cycle, the DCSM shuts down the driver seat system.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Restricted cushion or backrest TED filter
Crushed or restricted cushion or backrest foam pad
Crushed or restricted cushion or backrest climate controlled seat manifold
Cushion or backrest TED assembly
DCSM

PINPOINT TEST AZ: DTC B272C

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AZ1 CHECK FOR DCSM DTCs

Enter the following diagnostic mode on the scan tool: Self Test — DCSM .
Was DTC B2729 or B2730 retrieved?

Yes
For DTC B2729, GO to Pinpoint Test AW . For DTC B2730, GO to Pinpoint Test BD .

No
GO to AZ2 .

AZ2 MONITOR THE TED TEMPERATURE PIDs

Enter the following diagnostic mode on the scan tool: DataLogger — DCSM — PIDs .

Passenger Cushion Thermal Electric Device (TED) Temperature (PCSHTMP)
Passenger Back TED Temperature (PBKTMP)
Seat cushion thermal electric device temperature (CSHTEMP)
Seat back thermal electric device temperature (BK_TEMP)

NOTE: Make sure the temperature of the climate controlled seats has stabilized before monitoring the PIDs. Not allowing stabilization can cause incorrect readings and lead to incorrect identification of components that are not faulty.
Monitor TED temperature PIDs with the climate controlled seats OFF. Compare the PID values of the driver seat to those of the front passenger seat, this can help identify if there is a concern with the driver seat cushion or backrest PID value readings.
Are both driver seat TED temperature PIDs within 10°C (18°F) of the ambient temperature?

Yes
GO to AZ3 .

No
If the driver seat cushion PID varies 10°C (18°F) or more from ambient temperature, GO to AZ16 .

If the driver seat backrest PID varies 10°C (18°F) or more from ambient temperature, GO to AZ32 .

AZ3 CONFIRM THE FAULT IS IN THE SEAT CUSHION OR THE BACKREST

Ignition OFF.
Ignition ON.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
After cycling the ignition and with the engine running, set the driver seat to high heat (3 indicators illuminated). Allow the seat to heat for at least 15 minutes while monitoring the TED temperature PIDs of the driver seat.
Do the driver seat cushion TED and backrest TED PIDs vary more than 60°C (108°F) from each other?

Yes
If the driver seat cushion PID is 60°C (108°F) hotter than the backrest PID, GO to AZ5 .

If the driver seat backrest PID is 60°C (108°F) hotter than the cushion PID, GO to AZ20 .

No
GO to AZ4 .

AZ4 CHECK THE TEDs COOLING PERFORMANCE

Check the TEDs cooling performance on the affected seat. Refer to Component Test — Thermo-Electric Device (TED) Cooling Performance in this section.
Did the TEDs pass the component test?

Yes
The DTC may have been set by extreme cabin temperatures or excessive sunload on the seat causing the system to enter recovery mode. Occupant size and weight characteristics can also be a factor. CLEAR the DTCs. REPEAT the self-test. If a concern cannot be found or duplicated, RETURN the vehicle to the customer.

No
CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components ( , manifold, plenum, air ducts and foam pad). CHECK for airflow restrictions ( inlets and outlets, -to-manifold or plenum connections, filters and ducts) and REPAIR as needed. CHECK for an intermittent wiring fault. REPAIR as needed. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.

AZ5 CHECK FOR CORRECT TED INSTALLATION AND FOR CRUSHED FOAM

Ignition OFF.
Remove the seat. Refer to Seat — Front in this section.
Remove the seat cushion trim cover. Refer to Seat Cushion Cover — Front in this section.
Inspect the seat cushion for the following:

Is the cushion blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat cushion foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and the foam pad and manifold OK?

Yes
GO to AZ6 .

No
CORRECTLY install the cushion or INSTALL a new seat cushion foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.

DISCONNECT the battery ground cable. REPOWER the . REFER to Section 501-20B .

AZ6 CHECK THE BACKREST TED GROUND CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Position the driver seat in the vehicle and connect the seat-to-floor connectors.
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A-K, circuit RHS01 (WH/VT), harness side and ground.

Is any voltage present?

AZ7 CHECK THE BACKREST TED FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265A-J, circuit CHS01 (GY/VT), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AZ8 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ8 CHECK THE RESISTANCE OF THE BACKREST TED AND WIRING

Measure the resistance between DCSM C3265A-J, circuit CHS01 (GY/VT), harness side and DCSM C3265A-K, circuit RHS01 (WH/VT), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AZ10 .

No
GO to AZ9 .

AZ9 CHECK THE RESISTANCE OF THE BACKREST TED

Disconnect: Backrest TED C3034 .
Measure the resistance between backrest TED C3034 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ10 CHECK THE BLOWER MOTOR FEED AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DCSM C3265C .
Ignition ON.
Measure voltage between:

DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and ground.

DCSM C3265C-11, circuit VHS18 (BN/GN), harness side and ground.

Is voltage present on either circuit?

Yes
GO to AZ11 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ11 CHECK THE BLOWER MOTOR FEED AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and ground.

DCSM C3265C-11, circuit VHS18 (BN/GN), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AZ12 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ12 CHECK THE BLOWER MOTOR AND WIRING

NOTE: The ohmmeter must be connected with the positive lead to DCSM C3265C-16, circuit CHS03 (GN/BN) and the negative lead to DCSM C3265C-15, circuit RHS03 (GY/OG) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and DCSM C3265C-15, circuit RHS03 (GY/OG), harness side.

Is the resistance between 4,000 and 10,000 ohms?

Yes
GO to AZ14 .

No
GO to AZ13 .

AZ13 CHECK THE BLOWER MOTOR RESISTANCE

Disconnect: Cushion TED C3035 .
NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3035 pin 2 and pin 4, component side.

Is the resistance between 4,000 and 10,000 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ14 CHECK THE BLOWER MOTOR SPEED CONTROL AND CIRCUIT RESISTANCE

NOTE: The ohmmeter must be connected with the positive lead to C3265C-11, circuit VHS18 (BN/GN), harness side and the negative lead to C3265C-15, circuit RHS03 (GY/OG), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-11, circuit VHS18 (BN/GN) harness side and DCSM C3265C-15, circuit RHS03 (GY/OG), harness side.

Is the resistance between 240K and 4M ohms?

Yes
GO to AZ16 .

No
GO to AZ15 .

AZ15 CHECK THE BLOWER MOTOR SPEED CONTROL RESISTANCE

Disconnect: Cushion TED C3035 .
NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3035 pin 7 and pin 4, component side.

Is the resistance between 240K and 4M ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ16 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265B-7, circuit VHS26 (VT), harness side and ground.

Is any voltage present?

AZ17 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265B-7, circuit VHS26 (VT), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AZ18 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ18 CHECK THE TED THERMISTOR AND WIRING RESISTANCE AT THE DCSM

Measure the resistance between DCSM C3265B-7, circuit VHS26 (VT), harness side and DCSM C3265B-8, circuit RHS05 (YE/VT), harness side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

AZ19 CHECK THE TED THERMISTOR RESISTANCE

Disconnect: Cushion TED C3035 .
Measure the resistance between cushion TED pin 5 and pin 8, component side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ20 CHECK FOR CORRECT TED INSTALLATION AND FOR CRUSHED FOAM

Ignition OFF.
Remove the seat. Refer to Seat — Front in this section.
Remove the seat backrest trim cover. Refer to Seat Backrest Cover — Front in this section.
Inspect the seat backrest for the following:

Is the backrest blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat backrest foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and the foam pad and manifold OK?

Yes
GO to AZ21 .

No
CORRECTLY install the backrest or INSTALL a new seat backrest foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. REPOWER the . REFER to Section 501-20B .

AZ21 CHECK THE CUSHION TED GROUND CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Position the driver seat in the vehicle and connect the seat-to-floor connectors.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A-H, circuit RHS02 (BU/OG), harness side and ground.

Is any voltage present?

AZ22 CHECK THE CUSHION TED FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265A-G, circuit CHS02 (YE/BU), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AZ23 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ23 CHECK THE RESISTANCE OF THE CUSHION TED AND WIRING

Measure the resistance between DCSM C3265A-G circuit CHS02 (YE/BU), harness side and DCSM C3265A-H, circuit RHS02 (BU/OG), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AZ25 .

No
GO to AZ24 .

AZ24 CHECK THE CUSHION TED RESISTANCE

Disconnect: Cushion TED C3035 .
Measure the resistance between cushion TED C3035 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ25 CHECK THE BLOWER MOTOR FEED AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DCSM C3265C .
Ignition ON.
Measure voltage between:

DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and ground.

DCSM C3265C-12, circuit CHS09 (GY), harness side and ground.

Is voltage present on either circuit?

AZ26 CHECK THE BLOWER MOTOR AND SPEED CONTROL FEED CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and ground.

DCSM C3265C-12, circuit CHS09 (GY), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AZ27 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ27 CHECK THE BLOWER MOTOR AND WIRING RESISTANCE

NOTE: The ohmmeter must be connected with the positive lead to DCSM C3265C-16, circuit CHS03 (GN/BN) and the negative lead to DCSM C3265C-15, circuit RHS03 (GY/OG) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and DCSM C3265C-15, circuit RHS03 (GY/OG), harness side.

Is the resistance between 4,000 and 10,000 ohms?

Yes
GO to AZ29 .

No
GO to AZ28 .

AZ28 CHECK THE BLOWER MOTOR RESISTANCE

Disconnect: Backrest TED C3034 .
NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3034 pin 2 and pin 4, component side.

Is the resistance between 4,000 and 10,000 ohms?

AZ29 CHECK THE BLOWER MOTOR SPEED CONTROL AND CIRCUIT RESISTANCE

NOTE: The ohmmeter must be connected with the positive lead to C3265C-12, circuit CHS09 (GY), harness side and the negative lead to C3265C-15, circuit RHS03 (GY/OG), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-12, circuit CHS09 (GY) harness side and DCSM C3265C-15, circuit RHS03 (GY/OG), harness side.

Is the resistance between 240K and 4M ohms?

Yes
GO to AZ31 .

No
GO to AZ30 .

AZ30 CHECK THE BLOWER MOTOR SPEED CONTROL RESISTANCE

Disconnect: Backrest TED C3034 .
NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3034 pin 7 and pin 4, component side.

Is the resistance between 240K and 4M ohms?

AZ31 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: DCSM C3265B .
Ignition ON.
Measure voltage between DCSM C3265B-9, circuit CHS14 (GN), harness side and ground.

Is any voltage present?

AZ32 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
Measure the resistance between DCSM C3265B-9, circuit CHS14 (GN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AZ33 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

AZ33 CHECK THE TED THERMISTOR AND WIRING RESISTANCE

Measure the resistance between DCSM C3265B-9, circuit CHS14 (GN), harness side and DCSM C3265B-10, circuit CHS29 (WH/BU), harness side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

AZ34 CHECK THE TED THERMISTOR RESISTANCE

Disconnect: Backrest TED C3034 .
Measure the resistance between backrest TED pin 5 and pin 8, component side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Pinpoint Test BA: DTC B272D

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

A differential fault occurs when the cushion and backrest TEDs on an affected seat are reporting very different temperatures to the DCSM . This may result from an air flow restriction or a circuit fault of either TED area. If a TED and manifold is clear of obstruction and is operational, check the other TED and circuitry on the seat. It is important to note that a TED with a higher temperature may be operating correctly and is not the area of concern. The other TED may be indicating a much lower temperature, causing the DTC to set.

DTC B272D (Passenger Differential Temperature Fault) — If there is a temperature differential between the passenger backrest and cushion TED of 60°C (108°F) or more for more than 4 seconds, the TED is disconnected or the duct is blocked, this DTC sets. When this happens the first time in a key cycle, the DCSM puts the passenger seat system into recovery mode (see Principles of Operation). If the system is able to recover, it functions normally. If the system is able to recover and it occurs a second time in the same key cycle, the DCSM shuts down the passenger seat system.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Restricted cushion or backrest TED filter
Crushed or restricted cushion or backrest foam pad
Crushed or restricted cushion or backrest climate controlled seat manifold
Cushion or backrest TED assembly
DCSM

PINPOINT TEST BA: DTC B272D

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BA1 CHECK THE DCSM FOR DTCs

Enter the following diagnostic mode on the scan tool: Self Test — DCSM .
Was DTC B272A or B272B retrieved?

Yes
For DTC B272A, GO to Pinpoint Test AX . For DTC B272B, GO to Pinpoint Test AY .

No
GO to BA2 .

BA2 MONITOR THE TED TEMPERATURE PIDs

Enter the following diagnostic mode on the scan tool: DataLogger — DCSM — PIDs .

Passenger cushion thermal electric device (TED) temperature (PCSHTMP)
Passenger back TED temperature (PBKTMP)
Seat cushion thermal electric device temperature (CSHTEMP)
Seat back thermal electric device temperature (BK_TEMP)

NOTE: Make sure the temperature of the climate controlled seats has stabilized before monitoring the PIDs. Not allowing stabilization can cause incorrect readings and lead to incorrect identification of components that are not faulty.
Monitor the TED temperature PIDs with the climate controlled seats OFF. Compare the PIDs of the front passenger seat to those of the driver seat. This can help identify if there is a concern with the front passenger seat cushion or backrest PID readings.
Are both front passenger seat TED temperature PIDs within 10°C (18°F) of the ambient temperature?

Yes
GO to BA3 .

No
If the front passenger seat cushion PID varies 10°C (18°F) or more from ambient temperature, GO to BA16 .

If the front passenger seat backrest PID varies 10°C (18°F) or more from ambient temperature, GO to BA32 .

BA3 CONFIRM THE FAULT IS IN THE SEAT CUSHION OR BACKREST TED

Ignition OFF.
Ignition ON.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
After cycling the ignition and with the engine running, set the passenger seat to high heat. Allow the seat to heat for at least 15 minutes while monitoring the TED temperature PIDs of the passenger seat.
Do the passenger seat cushion TED and backrest TED PIDs vary more than 60°C (108°F) from each other?

Yes
If the front passenger seat cushion PID is 60°C (108°F) hotter than the backrest PID, GO to BA5 .

If the front passenger seat backrest PID is 60°C (108°F) hotter than the cushion PID, GO to BA20 .

No
GO to BA4 .

BA4 CHECK THE TEDs COOLING PERFORMANCE

Check TEDs cooling performance on the affected seat. Refer to Component Test — Thermo-Electric Device (TED) Cooling Performance in this section.
Did the TEDs pass the component test?

Yes
The DTC may have been set by extreme cabin temperatures or excessive sunload on the seat causing the system to enter recovery mode. Occupant size and weight characteristics can also be a factor. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. If a concern cannot be found or duplicated, RETURN the vehicle to the customer.

No
CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components ( , manifold, plenum, air ducts and foam pad). CHECK for airflow restrictions ( inlets and outlets, -to-manifold or plenum connections, filters and ducts) and REPAIR as needed. CHECK for an intermittent wiring fault. REPAIR as needed. CLEAR the DTCs. REPEAT the self-test.

BA5 CHECK FOR CORRECT TED INSTALLATION AND FOR CRUSHED FOAM

Ignition OFF.
Remove the seat. Refer to Seat — Front in this section.
Remove the seat cushion trim cover. Refer to Seat Cushion Cover — Front in this section.
Inspect the seat cushion for the following:

Is the cushion blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat cushion foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and the foam pad and manifold OK?

Yes
GO to BA6 .

No
Correctly INSTALL the cushion or INSTALL a new seat cushion foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. REPOWER the . REFER to Section 501-20B .

BA6 CHECK THE BACKREST TED GROUND CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Position the front passenger seat in the vehicle and connect the seat-to-floor connectors.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A-D, circuit RHS06 (WH), harness side and ground.

Is any voltage present?

BA7 CHECK THE BACKREST TED FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265A-C, circuit CHS06 (BU/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to BA8 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA8 CHECK THE RESISTANCE OF THE BACKREST TED AND WIRING

Measure the resistance between DCSM C3265A-C, circuit CHS06 (BU/BN), harness side and DCSM C3265A-D, circuit RHS06 (WH), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to BA10 .

No
GO to BA9 .

BA9 CHECK THE RESISTANCE OF THE BACKREST TED

Disconnect: Passenger Seat Backrest TED C3039 .
Measure the resistance between passenger seat backrest TED C3039 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA10 CHECK THE BLOWER MOTOR FEED AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DCSM C3265C .
Ignition ON.
Measure voltage between:

DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and ground.

DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and ground.

Is voltage present on either circuit?

BA11 CHECK THE BLOWER MOTOR FEED AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and ground.

DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to BA12 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA12 CHECK THE BLOWER MOTOR AND WIRING RESISTANCE

NOTE: The ohmmeter must be connected with the positive lead to DCSM C3265C-8, circuit CHS08 (BN/YE) and the negative lead to DCSM C3265C-7, circuit RHS08 (VT/WH) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and DCSM C3265C-7, circuit RHS08 (VT/WH), harness side.

Is the resistance between 4,000 and 10,000 ohms?

Yes
GO to BA14 .

No
GO to BA13 .

BA13 CHECK THE BLOWER MOTOR RESISTANCE

Disconnect: Passenger Seat Cushion TED C3040 .
NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between passenger seat cushion TED C3040 pin 2 and pin 4, component side.

Is the resistance between 4,000 and 10,000 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA14 CHECK THE BLOWER MOTOR SPEED CONTROL AND CIRCUIT RESISTANCE

NOTE: The ohmmeter must be connected with the positive lead to C3265C-3, circuit VHS23 (BN/BU), harness side and the negative lead to C3265C-7, circuit RHS08 (VT/WH), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and DCSM C3265C-7, circuit RHS08 (VT/WH), harness side.

Is the resistance between 240K and 4M ohms?

Yes
GO to BA16 .

No
GO to BA15 .

BA15 CHECK THE BLOWER MOTOR SPEED CONTROL RESISTANCE

Disconnect: Passenger Seat Cushion TED C3040 .
NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between passenger seat cushion TED C3040 pin 7 and pin 4, component side.

Is the resistance between 240K and 4M ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA16 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265B-2, circuit VHS27 (WH/OG), harness side and ground.

Is any voltage present?

BA17 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265B-2, circuit VHS27 (WH/OG), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to BA18 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA18 CHECK THE THERMISTOR AND WIRING RESISTANCE

Measure the resistance between DCSM C3265B-2, circuit VHS27 (WH/OG), harness side and DCSM C3265B-3, circuit RHS10 (BU/OG), harness side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

BA19 CHECK THE THERMISTOR RESISTANCE

Disconnect: Passenger Seat Cushion TED C3040 .
Measure the resistance between passenger seat cushion TED pin 5 and pin 8, component side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA20 CHECK FOR CORRECT TED INSTALLATION AND FOR CRUSHED FOAM

Ignition OFF.
Remove the seat. Refer to Seat — Front in this section.
Remove the seat backrest trim cover. Refer to Seat Backrest Cover — Front in this section.
Inspect the seat backrest for the following:

Is the backrest blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat backrest foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and the foam pad and manifold OK?

Yes
GO to BA21 .

No
Correctly INSTALL the backrest or INSTALL a new seat backrest foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. REPOWER the . REFER to Section 501-20B .

BA21 CHECK THE CUSHION TED GROUND CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Position the front passenger seat in the vehicle and connect the seat-to-floor connectors.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A-B, circuit RHS07 (BU), harness side and ground.

Is any voltage present?

BA22 CHECK THE CUSHION TED FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265A-A, circuit CHS07 (GY/BU), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to BA23 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA23 CHECK THE CUSHION TED AND WIRING RESISTANCE

Measure the resistance between DCSM C3265A-A circuit CHS07 (GY/BU), harness side and DCSM C3265A-B, circuit RHS07 (BU), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to BA25 .

No
GO to BA24 .

BA24 CHECK THE CUSHION TED RESISTANCE

Disconnect: Passenger Seat Cushion TED C3040 .
Measure the resistance between passenger seat cushion TED C3040 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA25 CHECK THE BLOWER MOTOR FEED AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: DCSM C3265C .
Ignition ON.
Measure voltage between:

DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and ground.

DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and ground.

Is voltage present on either circuit?

BA26 CHECK THE BLOWER MOTOR FEED AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and ground.

DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to BA27 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA27 CHECK THE BLOWER MOTOR AND WIRING RESISTANCE

NOTE: The ohmmeter must be connected with the positive lead to DCSM C3265C-8, circuit CHS08 (BN/YE) and the negative lead to DCSM C3265C-7, circuit RHS08 (VT/WH) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and DCSM C3265C-7, circuit RHS08 (VT/WH), harness side.

Is the resistance between 4,000 and 10,000 ohms?

Yes
GO to BA29 .

No
GO to BA28 .

BA28 CHECK THE BLOWER MOTOR RESISTANCE

Disconnect: Passenger Seat Backrest TED C3039 .
NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between passenger seat backrest TED C3039 pin 2 and pin 4, component side.

Is the resistance between 4,000 and 10,000 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA29 CHECK THE BLOWER MOTOR GROUND CIRCUIT TO BLOWER MOTOR SPEED CONTROL CIRCUIT RESISTANCE

NOTE: The ohmmeter must be connected with the positive lead to C3265C-4, circuit VHS21 (BU/WH), harness side and the negative lead to C3265C-7, circuit RHS08 (VT/WH), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and DCSM C3265C-7, circuit RHS08 (VT/WH), harness side.

Is the resistance between 240K and 4M ohms?

Yes
GO to BA31 .

No
GO to BA30 .

BA30 CHECK THE BLOWER MOTOR SPEED CONTROL RESISTANCE

Disconnect: Pasenger Seat Backrest TED C3039 .
NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3039 pin 7 and pin 4, component side.

Is the resistance between 240K and 4M ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA31 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: DCSM C3265B .
Ignition ON.
Measure voltage between DCSM C3265B-4, circuit VHS36 (YE/BU), harness side and ground.

Is any voltage present?

BA32 CHECK THE THERMISTOR FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Measure the resistance between DCSM C3265B-4, circuit VHS36 (YE/BU), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to BA33 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BA33 CHECK THE THERMISTOR AND WIRING RESISTANCE AT THE DCSM

Measure the resistance between DCSM C3265B-4, circuit VHS36 (YE/BU), harness side and DCSM C3265B-5, circuit RHS20 (GN/BU), harness side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

BA34 CHECK THE TED THERMISTOR RESISTANCE

Disconnect: Passenger Seat Backrest TED C3039 .
Measure the resistance between passenger seat backrest TED pin 5 and pin 8, component side. Note the ambient temperature and compare result to the following table:

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

Pinpoint Test BB: DTC B272E

NOTE: This DTC sets for an open or short to voltage. See DTC setting description below.

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The driver climate controlled seat blowers are located within the backrest and cushion Thermo-Electric Devices (TEDs). The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to both blowers. The blowers are independently controlled by separate speed control circuits from the DCSM .

DTC B272E (Driver Ignition Run/Blower Circuit Short to Ground) — If either the blower voltage supply or return circuits are open (to both cushion or backrest blowers) or shorted to voltage, the DTC is set and after 4-6 seconds the DCSM disables outputs to the driver seat. The DTC also sets if the blower voltage supply or return circuit is open to only one blower when DCSM supply voltage is less than 12 volts.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Backrest or cushion TED
DCSM

PINPOINT TEST BB: DTC B272E

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BB1 CHECK THE TED BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265C .
Disconnect: Driver Seat Cushion TED C3035 .
Disconnect: Driver Seat Backrest TED C3034 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure the voltage between DCSM C3265C, harness side and ground using the following chart.

DCSM Connector	Circuit
C3265C-16	CHS03 (GN/BN)
C3265C-15	RHS03 (GY/OG)

Is voltage present on either circuit?

BB2 CHECK THE TED BLOWER MOTOR CIRCUITS FOR AN OPEN

Ignition OFF.
Measure the resistance between DCSM C3265C, harness side and cushion TED C3035, harness side using the following chart.

DCSM Connector	Circuit	Cushion TED Connector
C3265C-16	CHS03 (GN/BN)	C3035-2
C3265C-15	RHS03 (GY/OG)	C3035-4

Are the resistances less than 3 ohms?

Yes
GO to BB3 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

BB3 CHECK THE RESISTANCE OF THE CUSHION AND BACKREST TED BLOWER MOTORS

NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between:

cushion TED C3035 pins 2 and 4, component side.

backrest TED C3034 pins 2 and 4, component side.

Are the resistances between 4,000 and 10,000 ohms?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
If the cushion resistance is not between 4,000 and 10,000 ohms, INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

If backrest the resistance is not between 4,000 and 10,000 ohms, INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

Pinpoint Test BC: DTC B272F

NOTE: This DTC sets for an open or short to voltage. See DTC setting description below.

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The passenger climate controlled seat blowers are located within the backrest and cushion Thermo-Electric Devices (TEDs). The Dual Climate Controlled Seat Module (DCSM) supplies voltage and ground to both blowers. The blowers are independently controlled by separate speed control circuits from the DCSM .

DTC B272F (Passenger Ignition Run/Blower Circuit Short to Ground) — If either the blower voltage supply or return circuits are open (to both cushion and backrest blowers) or shorted to voltage, the DTC is set and after 4-6 seconds the DCSM disables outputs to the passenger seat. The DTC also sets if the blower voltage supply or return circuit is open to only one blower when DCSM supply voltage is less than 12 volts.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Backrest or cushion TED
DCSM

PINPOINT TEST BC: DTC B272F

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BC1 CHECK THE TED BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265C .
Disconnect: Cushion TED C3040 .
Disconnect: Backrest TED C3039 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure the voltage between DCSM C3265C, harness side and ground using the following chart.

DCSM Connector	Circuit
C3265C-8	CHS08 (BN/YE)
C3265C-7	RHS08 (VT/WH)

Is voltage present on either circuit?

BC2 CHECK THE TED BLOWER MOTOR CIRCUITS FOR AN OPEN

Ignition OFF.
Measure the resistance between DCSM C3265C, harness side and cushion TED C3040, harness side using the following chart.

DCSM Connector	Circuit	Cushion TED Connector
C3265C-8	CHS08 (BN/YE)	C3040-2
C3265C-7	RHS08 (VT/WH)	C3040-4

Are the resistances less than 3 ohms?

Yes
GO to BC3 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BC3 CHECK THE RESISTANCE OF THE CUSHION AND BACKREST TED BLOWER MOTORS

NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between:

cushion TED C3040 pins 2 and 4, component side.

backrest TED C3039 pins 2 and 4, component side.

Are the resistances between 4,000 and 10,000 ohms?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
If the cushion resistance is not between 4,000 and 10,000 ohms, INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

If backrest the resistance is not between 4,000 and 10,000 ohms, INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

Pinpoint Test BD: DTC B2730

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

DTC B2730 (Back Over-Temp Detected) — If the driver seat backrest TED temperature exceeds 70°C (158°F) in cool mode or 85°C (185°F) in heat mode for more than 4 seconds the DCSM shuts down the driver seat system and sets this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Restricted backrest TED filter
Crushed or restricted backrest foam pad
Crushed or restricted climate controlled seat manifold
Backrest TED assembly
Dual Climate Controlled Seat Module (DCSM)

PINPOINT TEST BD: DTC B2730

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BD1 CHECK THE DCSM FOR ON-DEMAND DTCs

Start the vehicle and set the driver seat to HIGH heat.
Enter the following diagnostic mode on the scan tool: Self Test — DCSM .
Was DTC B2730 retrieved on-demand during the self-test?

Yes
GO to BD2 .

No
GO to BD5 .

BD2 CHECK THE DRIVER SEAT BACKREST TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
Disconnect: Driver Seat Backrest TED C3034 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between:

DCSM C3265B-9, circuit CHS14 (GN), harness side and ground.

DCSM C3265B-10, circuit CHS29 (WH/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to BD3 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD3 CHECK THE DRIVER SEAT BACKREST TED THERMISTOR AND WIRING

Connect: Driver Seat Backrest TED C3034 .
Measure the resistance between DCSM C3265B-9, circuit CHS14 (GN), harness side and DCSM C3265B-10, circuit CHS29 (WH/BU), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to BD18 .

No
GO to BD4 .

BD4 CHECK THE DRIVER SEAT BACKREST TED THERMISTOR

Disconnect: Driver Seat Backrest TED C3034 .
Measure the resistance between driver seat backrest TED C3034 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS35 (VT/OG) or RHS15 (GY/BN) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

No
INSTALL a new driver seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD5 CONFIRM THE FAULT WHILE MONITORING THE DCSM SEAT BACK THERMAL ELECTRIC DEVICE TEMPERATURE (BK_TEMP) AND SEAT CUSHION THERMAL ELECTRIC DEVICE TEMPERATURE (CSHTEMP) PIDs

Set the driver seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Enter the following diagnostic mode on the scan tool: DataLogger - DCSM .
Monitor the DCSM PIDs BK_TEMP and CSHTEMP.
NOTE: A crushed seat backrest foam pad or a crushed climate controlled seat manifold may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault.
Attempt to recreate the fault. Start the vehicle and set the driver seat to HIGH heat for at least 15 minutes while occupying the seat.
Do the PIDs increase incrementally (gradually) and stay within 15°C (27°F) of each other?

Yes
Fault not present at this time. Fault may have been set due to a past failure, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive driver compartment temperature. CLEAR the DTCs. REPEAT the self-test.

No
If the BK_TEMP PID increases incrementally and is greater than 15°C (27°F) of the CSHTEMP PID, GO to BD6 .

If the BK_TEMP PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15°C (27°F) of the CSHTEMP PID, GO to BD16 .

BD6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS

With the engine running, set both front seats to HIGH cool.
Note the airflow exhausting from the driver seat backrest TED and compare it to the airflow exhausting from the passenger seat backrest TED .
Carry out a wiggle test of the wire harnesses between the DCSM and the driver seat backrest TED while monitoring blower operation of the TED . The blower should operate consistently and not change speeds
Is the airflow exhausting from the driver seat backrest TED comparable to the airflow exhausting from the passenger seat backrest TED with no change in operation when carrying out the wiggle test?

Yes
GO to BD7 .

No
If the airflow exhausting from the driver seat backrest is not comparable to the airflow exhausting from the passenger seat backrest , GO to BD8 .

If the driver seat backrest blower operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault. CLEAR the DTCs. REPEAT the self-test.

BD7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED

Note the airflow exhausting from the driver seat backrest TED with the driver seat occupied and compare it to the airflow exhausting from the passenger seat backrest TED with the passenger seat occupied.
Is the airflow exhausting from the driver seat backrest TED comparable to the airflow exhausting from the passenger seat backrest TED ?

Yes
GO to BD16 .

No
INSTALL a new driver seat backrest foam pad and/or climate controlled seat manifold. CLEAR the DTCs. REPEAT the self-test.

BD8 CHECK THE DRIVER SEAT BACKREST BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Ignition OFF.
Inspect the blower of the driver seat backrest TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. CLEAR the DTCs. REPEAT the self-test.

No
GO to BD9 .

BD9 CHECK THE DRIVER SEAT BACKREST BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265C .
Disconnect: Driver Seat Backrest TED C3034 .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265C-12, circuit CHS09 (GY), harness side and driver seat backrest TED C3034-7, circuit VHS16 (BU/GN), harness side.

Is the resistance less than 3 ohms?

Yes
GO to BD10 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD10 CHECK THE DRIVER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO VOLTAGE

Ignition ON.
Measure the voltage between DCSM C3265C-15, circuit RHS03 (GY/OG), harness side and ground.

Is any voltage present?

Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

No
GO to BD11 .

BD11 CHECK THE DRIVER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to BD12 .

No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD12 CHECK THE DRIVER SEAT BACKREST BLOWER CIRCUITS FOR AN OPEN

Measure the resistance between:

DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and driver seat backrest TED C3034-2, circuit CHS03 (GN/BN), harness side.

DCSM C3265C-15, circuit RHS03 (GY/OG), harness side and driver seat backrest TED C3034-4, circuit RHS03 (GY/OG), harness side.

Are the resistances less than 3 ohms?

Yes
GO to BD13 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD13 CHECK THE DRIVER SEAT BACKREST BLOWER RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between driver seat backrest TED C3034 pin 2 and pin 4, component side.

Is the resistance between 4,000 ohms and 10,000 ohms?

Yes
GO to BD14 .

No
INSTALL a new driver seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD14 CHECK THE DRIVER SEAT BACKREST BLOWER SPEED CONTROL RESISTANCE

NOTICE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not damaged.
Measure the resistance between driver seat backrest TED C3034 pin 7 and pin 4, component side.

Is the resistance between 240K ohms and 400K ohms?

Yes
GO to BD15 .

No
INSTALL a new driver seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD15 CHECK THE DRIVER SEAT BACKREST TED INSTALLATION AND FOR CRUSHED SEAT BACKREST

Ignition OFF.
Remove the driver seat. Refer to Seat — Front in this section.
Remove the driver seat backrest cover. Refer to Seat Backrest Cover — Front in this section.
Inspect the driver seat backrest for the following:

Is the driver seat backrest TED correctly installed?

Is the driver seat backrest foam pad crushed or restricted?

Is the driver seat backrest climate controlled seat manifold crushed or restricted?

Is the driver seat backrest TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
INSTALL the driver seat backrest cover and seat and GO to BD18 .

No
CORRECTLY install the driver seat backrest or INSTALL a new driver seat backrest foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REFER to Section 414-01 . CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD16 CHECK THE DRIVER SEAT BACKREST TED THERMISTOR AND WIRING

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265B .
WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Measure the resistance between DCSM C3265B-9, circuit CHS14 (GN), harness side and C3265B-10 circuit CHS29 (WH/BU), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
GO to BD18 .

No
GO to BD17 .

BD17 CHECK THE DRIVER SEAT BACKREST TED THERMISTOR

Measure the resistance between driver seat backrest TED C3034 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2,782-1,663 ohms
10-20°C (50-68°F)	1,837-1,140 ohms
20-30°C (68-86°F)	1,260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR circuit VHS35 (VT/OG) or RHS15 (GY/BN) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

No
INSTALL a new . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD18 CHECK THE DRIVER SEAT BACKREST TED HEATING/COOLING CIRCUITRY CURRENT DRAW

Connect: All DCSM , TED and Body Harness-to-Seat Harness Connectors .
NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete.
NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the Vehicle Measurement Module available for use with Integrated Diagnostic System (IDS). If these are unavailable, the inductive current probe feature from a battery tester may be substituted.
Place an inductive current probe around circuit CHS01 (GY/VT) near DCSM C3265A-J and monitor the current draw.
Start the vehicle and set the driver seat to HIGH heat.
Is the current draw less than 11 amps?

Yes
GO to BD19 .

No
INSTALL a new driver seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD19 CHECK RESISTANCE OF THE DRIVER SEAT BACKREST TED AND WIRING

Ignition OFF.
Disconnect: DCSM C3265A .
Measure the resistance between DCSM C3265A-J circuit CHS01 (GY/VT), harness side and C3265A-K, circuit RHS01 (WH/VT), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to BD21 .

No
GO to BD20 .

BD20 CHECK THE RESISTANCE OF THE DRIVER SEAT BACKREST TED

Disconnect: Driver Seat Backrest TED C3034 .
Measure the resistance between driver seat backrest TED C3034 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR circuit CHS01 (GY/VT) or RHS01 (WH/VT) for an open or high resistance. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

No
INSTALL a new driver seat backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

BD21 CHECK FOR CORRECT DCSM OPERATION

Inspect the DCSM and driver seat backrest TED harness and component side connectors and the body harness-to-seat harness connectors for:

corrosion

damaged pins

pushed-out pins

Connect: All DCSM , TED and Body Harness-to-Seat Harness Connectors .
Make sure the connectors are seated correctly.
Start the engine.
Set the driver seat to OFF.
Enter the following diagnostic mode on the scan tool: Clear DTCs - DCSM .
Attempt to recreate the fault. With the engine still running set the driver seat to HIGH heat for at least 15 minutes.
Is the concern still present?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. REPEAT the self-test. TEST the system for normal operation.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

DISCONNECT the battery ground cable. CONNECT driver seat side air bag C367 and passenger seat side air bag C337.

REPOWER the . REFER to Section 501-20B .

Pinpoint Test BE: DTCs B103B and B1111

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) monitors the Thermo-Electric Device (TED) circuits. If a short to ground or voltage on any of these circuits is detected, the DTC(s) will be set.

DTC B103B (Thermo-Electric Driver Overcurrent Low) — If DCSM outputs to the driver seat backrest or cushion TED (circuit pins G, H, J or K at the DCSM connector) or any components within these circuit loops are shorted to ground or a TED resistance of less than 0.9 ohm is sensed, the DCSM will shut down the driver seat system and set this DTC.
DTC B1111 (Driver Thermo-Electric Device Control Overtemperature Fault) — If the DCSM TED driver integrated circuit temperature exceeds 175°C (347°F), the DCSM will shut down the driver seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED assembly
DCSM

PINPOINT TEST BE: DTCs B103B AND B1111

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BE1 CHECK THE TED CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
Measure the resistance between DCSM C3265A, harness side and ground using the following chart:

Connector	Circuit
C3265A-G	CHS02 (YE/BU)
C3265A-H	RHS02 (BU/OG)
C3265A-J	CHS01 (GY/VT)
C3265A-K	RHS01 (WH/VT)

Are the resistances greater than 10,000 ohms?

Yes
GO to BE2 .

No
If the resistance of C3265A-G, circuit CHS02 (YE/BU) and/or C3265A-H, circuit RHS02 (BU/OG) to ground is not greater than 10,000 ohms to ground, GO to BE6 .

If the resistance of C3265A-J, circuit CHS01 (GY/VT) and/or C3265A-K, circuit RHS01 (WH/VT) to ground is not greater than 10,000 ohms to ground, GO to BE7 .

BE2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A, harness side and ground using the following chart:

Connector	Circuit
C3265A-G	CHS02 (YE/BU)
C3265A-H	RHS02 (BU/OG)
C3265A-J	CHS01 (GY/VT)
C3265A-K	RHS01 (WH/VT)

Is voltage present on any circuits?

Yes
If voltage is present at C3265A-G and/or C3265A-H, GO to BE8 .

If voltage is present at C3265A-J and/or C3265A-K, GO to BE9 .

No
GO to BE3 .

BE3 CHECK THE RESISTANCE OF THE TED AND WIRING

Ignition OFF.
Measure the resistance between:

DCSM C3265A-G, circuit CHS02 (YE/BU), harness side and DCSM C3265A-H, circuit RHS02 (BU/OG), harness side.

DCSM C3265A-J, circuit CHS01 (GY/VT), harness side and C3265A-K, circuit RHS01 (WH/VT), harness side.

Are the resistances between 0.9 and 10 ohms?

BE4 CHECK THE BACKREST TED RESISTANCE

Disconnect: Backrest TED C3034 .
Measure the resistance between backrest TED C3034 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

BE5 CHECK THE CUSHION TED RESISTANCE

Disconnect: Cushion TED C3035 .
Measure the resistance between cushion TED C3035 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

BE6 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO GROUND

Disconnect: Cushion TED C3035 .
Measure the resistance between:

DCSM C3265A-G, circuit CHS02 (YE/BU), harness side and ground.

DCSM C3265A-H, circuit RHS02 (BU/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

BE7 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO GROUND

Disconnect: Backrest TED C3034 .
Measure the resistance between:

DCSM C3265A-J, circuit CHS01 (GY/VT), harness side and ground.

DCSM C3265A-K, circuit RHS01 (WH/VT), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

BE8 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: Cushion TED C3035 .
Ignition ON.
Measure voltage between:

DCSM C3265A-G, circuit CHS02 (YE/BU), harness side and ground.

DCSM C3265A-H, circuit RHS02 (BU/OG), harness side and ground.

Is voltage present on either circuit?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

BE9 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: Backrest TED C3034 .
Ignition ON.
Measure voltage between:

DCSM C3265A-J, circuit CHS01 (GY/VT), harness side and ground.

DCSM C3265A-K, circuit RHS01 (WH/VT), harness side and ground.

Is voltage present on either circuit?

Pinpoint Test BF: DTC B103C

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) monitors the Thermo-Electric Device (TED) circuits. If an open on any of these circuits is detected, the DTC will be set.

DTC B103C (Thermo-Electric Driver Open Load) — If the DCSM output circuits to the passenger seat backrest or cushion TED (circuit pins A, B, C or D at the DCSM connector) or any components within these circuit loops are open, disconnected or a TED resistance greater than 90,000 ohms is sensed, the DCSM continues normal operation and sets this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED assembly
DCSM

PINPOINT TEST BF: DTC B103C

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BF1 CHECK THE TED CIRCUITS FOR AN OPEN

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Driver Seat Side Air Bag C367 .
Disconnect: Driver Safety Belt Buckle C3065 .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
Disconnect: Cushion TED C3035 .
Disconnect: Backrest TED C3034 .
Measure the resistance between DCSM C3265A, harness side and cushion TED C3035, harness side; and between DCSM C3265A, harness side and backrest TED C3034, harness side using the following chart:

DCSM Connector	Circuit	TED Connector
C3265A-G	CHS02 (YE/BU)	C3035-1
C3265A-H	RHS02 (BU/OG)	C3035-3
C3265A-J	CHS01 (GY/VT)	C3034-1
C3265A-K	RHS01 (WH/VT)	C3034-3

Are the resistances less than 3 ohms?

Yes
GO to BF2 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

BF2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A, harness side and ground using the following chart:

Connector	Circuit
C3265A-G	CHS02 (YE/BU)
C3265A-H	RHS02 (BU/OG)
C3265A-J	CHS01 (GY/VT)
C3265A-K	RHS01 (WH/VT)

Is voltage present on either circuit?

BF3 CHECK THE BACKREST AND CUSHION TED RESISTANCE

Ignition OFF.
Measure the resistance between:

backrest TED C3034 pin 1 and pin 3, component side.

cushion TED C3034 pin 1 and pin 3, component side.

Are the resistances between 0.9 and 10 ohms?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

No
If backrest resistance is not between 0.9 and 10 ohms, INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

If cushion resistance is not between 0.9 and 10 ohms, INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the . REFER to Section 501-20B .

Pinpoint Test BG: DTC B103D

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) is supplied voltage at all times, but the climate controlled seat system only operates with the engine running. The system can be operated with the ignition ON engine OFF by using a scan tool to bypass the climate controlled seat switches on the touchscreen interface. When commanding a heat or cool mode operation in this manner, the climate controlled seat system only operates in 15 second intervals. Both voltage supply circuits are spliced together internal to the DCSM , so if one circuit becomes open, both seats can still be operated. However, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat is disabled by the DCSM .

DTC B103D (Blower Driver Overtemperature) — If the DCSM output circuits to the driver seat blower or any components within these circuit loops are shorted to ground or cause an excessive current draw, the DCSM will overheat, shut down the driver seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Thermo-Electric Device (TED) assembly
DCSM

PINPOINT TEST BG: DTC B103D

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
BG1 CHECK THE BLOWER MOTOR FEED CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . Disconnect: Cushion TED C3035 . Disconnect: Backrest TED C3034 . Measure the resistance between DCSM C3265C-16, circuit CHS03 (GN/BN), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to BG2 . No REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
BG2 CHECK FOR A SHORT BETWEEN THE BLOWER MOTOR FEED AND GROUND CIRCUITS
Measure the resistance between DCSM C3265C-15, circuit RHS03 (GY/OG), harness side and C3265C-16, circuit CHS03 (GN/BN), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to BG3 . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
BG3 CHECK THE BACKREST AND CUSHION BLOWER MOTOR RESISTANCE
NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty. Measure the resistance between: backrest TED C3034 pin 2 and pin 4, component side. cushion TED C3035 pin 2 and pin 4, component side. Are the resistances between 4,000 and 10,000 ohms?	Yes INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No If cushion TED resistance is not between 4,000 and 10,000 ohms, INSTALL a new cushion TED . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. If backrest TED resistance is not between 4,000 and 10,000 ohms, INSTALL a new backrest TED . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test BH: DTCs B1113 and B111B

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The seat cushion and backrest are equipped with a Thermo-Electric Device (TED) assembly that includes a seat blower (fan motor, serviced as an assembly with the TED ). When the Dual Climate Controlled Seat Module (DCSM) detects an overcurrent and/or overtemperature in the output circuits to the TEDs , it disables the affected seat and sets the following DTCs:

DTC B1113 (Passenger Thermo-Electric Device Control Overtemperature Fault) — If the DCSM TED driver integrated circuit temperature exceeds 175°C (347°F), the DCSM will shut down the passenger seat system and set this DTC.
DTC B111B (Passenger Thermo-Electric Driver Overcurrent Low) — If DCSM outputs to the passenger seat backrest or cushion TED (circuit pins A, B, C or D at the DCSM connector) or any components within these circuit loops are shorted to ground or a TED resistance of less than 0.9 ohm is sensed, the DCSM will shut down the passenger seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED assembly
DCSM

PINPOINT TEST BH: DTCs B1113 AND B111B

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BH1 CHECK THE TED CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
Measure the resistance between DCSM C3265A, harness side and ground using the following chart:

Connector	Circuit
C3265A-A	CHS07 (GY/BU)
C3265A-B	RHS07 (BU)
C3265A-C	CHS06 (BU/BN)
C3265A-D	RHS06 (WH)

Are the resistances greater than 10,000 ohms?

Yes
GO to BH2 .

No
If the resistance between C3265A-A and/or C3265A-B to ground is not greater than 10,000 ohms, GO to BH6 .

If the resistance between C3265A-C and/or C3265A-D to ground is not greater than 10,000 ohms, GO to BH7 .

BH2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A, harness side and ground using the following chart:

Connector	Circuit
C3265A-A	CHS07 (GY/BU)
C3265A-B	RHS07 (BU)
C3265A-C	CHS06 (BU/BN)
C3265A-D	RHS06 (WH)

Is voltage present on any circuits?

Yes
If voltage is present at C3265A-A and/or C3265A-B, GO to BH8 .

If voltage is present at C3265A-C and/or C3265A-D, GO to BH9 .

No
GO to BH3 .

BH3 CHECK THE RESISTANCE OF THE TED AND WIRING

Ignition OFF.
Measure the resistance between:

DCSM C3265A-A, circuit CHS07 (GY/BU), harness side and DCSM C3265A-B, circuit RHS07 (BU), harness side.

DCSM C3265A-C, circuit CHS06 (BU/BN), harness side and C3265A-D, circuit RHS06 (WH), harness side.

Are the resistances between 0.9 and 10 ohms?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
If the resistance between C3265A-A and C3265A-B is not between 0.9 and 10 ohms, GO to BH5 .

If the resistance between C3265A-C and C3265A-D is not between 0.9 and 10 ohms, GO to BH4 .

BH4 CHECK THE BACKREST TED RESISTANCE

Disconnect: Backrest TED C3039 .
Measure the resistance between backrest TED C3039 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BH5 CHECK THE CUSHION TED RESISTANCE

Disconnect: Cushion TED C3040 .
Measure the resistance between cushion TED C3040 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BH6 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO GROUND

Disconnect: Cushion TED C3040 .
Measure the resistance between:

DCSM C3265A-A, circuit CHS07 (GY/BU), harness side and ground.

DCSM C3265A-B, circuit RHS07 (BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BH7 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO GROUND

Disconnect: Backrest TED C3039 .
Measure the resistance between:

DCSM C3265A-C, circuit CHS06 (BU/BN), harness side and ground.

DCSM C3265A-D, circuit RHS06 (WH), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BH8 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: Cushion TED C3040 .
Ignition ON.
Measure voltage between:

DCSM C3265A-A, circuit CHS07 (GY/BU), harness side and ground.

DCSM C3265A-B, circuit RHS07 (BU), harness side and ground.

Is voltage present on either circuit?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BH9 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: Backrest TED C3039 .
Ignition ON.
Measure voltage between:

DCSM C3265A-C, circuit CHS06 (BU/BN), harness side and ground.

DCSM C3265A-D, circuit RHS06 (WH), harness side and ground.

Is voltage present on either circuit?

Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

Pinpoint Test BI: DTC B111C

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The seat cushion and backrest are equipped with a Thermo-Electric Device (TED) assembly that includes a seat blower (fan motor, serviced as an assembly with the TED ). If the Dual Climate Controlled Seat Module (DCSM) detects an open circuit or high TED resistance, the following DTC sets:

DTC B111C (Passenger Thermo-Electric Driver Open Load) — If the DCSM output circuits to the passenger seat backrest or cushion TED (circuit pins A, B, C or D at the DCSM connector) or any components within these circuit loops are open, disconnected or a TED resistance greater than 90,000 ohms is sensed, the DCSM continues normal operation and sets this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED assembly
DCSM

PINPOINT TEST BI: DTC B111C

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

BI1 CHECK THE TED CIRCUITS FOR AN OPEN

Ignition OFF.
Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B .
Disconnect: Passenger Seat Side Air Bag C337 .
Disconnect: Passenger Safety Belt Buckle C3066 .
Disconnect: DCSM C3265A .
Disconnect: Cushion TED C3040 .
Disconnect: Backrest TED C3039 .
Measure the resistance between DCSM C3265A, harness side and cushion TED C3040, harness side; and between DCSM C3265A, harness side and backrest TED C3039, harness side using the following chart:

DCSM Connector	Circuit	TED Connector
C3265A-A	CHS07 (GY/BU)	C3040-1
C3265A-B	RHS07 (BU)	C3040-3
C3265A-C	CHS06 (BU/BN)/CHS01 (GY/VT)	C3039-1
C3265A-D	RHS06 (WH)/RHS01(WH/VT)	C3039-3

Are the resistances less than 3 ohms?

Yes
GO to BI2 .

No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

BI2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable. Refer to Section 414-01 .
Ignition ON.
Measure voltage between DCSM C3265A, harness side and ground using the following chart:

Connector	Circuit
C3265A-A	CHS07 (GY/BU)
C3265A-B	RHS07 (BU)
C3265A-C	CHS06 (BU/BN)
C3265A-D	RHS06 (WH)

Is voltage present on any circuits?

BI3 CHECK THE BACKREST AND CUSHION TED RESISTANCE

Ignition OFF.
Measure the resistance between:

backrest TED C3039 pin 1 and pin 3, component side.

cushion TED C3039 pin 1 and pin 3, component side.

Are the resistances between 0.9 and 10 ohms?

Yes
INSTALL a new . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

No
If backrest resistance is not between 0.9 and 10 ohms, INSTALL a new backrest . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

If cushion resistance is not between 0.9 and 10 ohms, INSTALL a new cushion . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test.

DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the . REFER to Section 501-20B .

Pinpoint Test BJ: DTC B111D

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

DTC B111D (Passenger Blower Driver Overtemperature) — If the DCSM output circuits to the passenger seat blower or any components within these circuit loops are shorted to ground or cause an excessive current draw, the DCSM will overheat, shut down the passenger seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Thermo-Electric Device (TED) assembly
DCSM

PINPOINT TEST BJ: DTC B111D

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
BJ1 CHECK THE BLOWER MOTOR FEED CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . Disconnect: Cushion TED C3040 . Disconnect: Backrest TED C3039 . Measure the resistance between DCSM C3265C-8, circuit CHS08 (BN/YE), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to BJ2 . No REPAIR the circuit. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
BJ2 CHECK FOR A SHORT BETWEEN THE BLOWER MOTOR FEED AND GROUND CIRCUITS
Measure the resistance between DCSM C3265C-7, circuit RHS08 (VT/WH), harness side and C3265C-8, circuit CHS08 (BN/YE), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to BJ3 . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
BJ3 CHECK THE BACKREST CUSHION BLOWER MOTOR RESISTANCE
NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty. Measure the resistance between: cushion TED C3040 pin 2 and pin 4, component side. backrest TED C3039 pin 2 and pin 4, component side. Are the resistances between 4,000 and 10,000 ohms?	Yes INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No If cushion TED resistance is not between 4,000 and 10,000 ohms, INSTALL a new cushion TED . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. If backrest TED resistance is not between 4,000 and 10,000 ohms, INSTALL a new backrest TED . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test BK: DTC B19A1

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

DTC B19A1 (Passenger Seat Cushion Blower Speed Short to Battery) — If the passenger seat cushion blower speed circuit is shorted to voltage, the DCSM will shut down the passenger seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST BK: DTC B19A1

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
BK1 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Ignition ON. Measure voltage between C3265C-3, circuit VHS23 (BN/BU), harness side and ground. Is any voltage present?	Yes GO to BK2 . No GO to BK3 .
BK2 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Disconnect: Cushion TED C3040 . Measure voltage between DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to BK3 .
BK3 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR FEED CIRCUITS FOR A SHORT TOGETHER
Ignition OFF. Disconnect: Cushion TED C3040 . Measure the resistance between DCSM C3265C-3, circuit VHS23 (BN/BU), harness side and C3265C-8, circuit CHS08 (BN/YE), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to BK4 . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
BK4 CHECK THE CUSHION TED RESISTANCE FOR AN INTERNAL SHORT
Measure the resistance between cushion TED C3040 pin 2 and pin 7, component side. Is the resistance greater than 2,000,000 ohms?	Yes INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No INSTALL a new cushion TED . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test BL: DTC B19A2

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

DTC B19A2 (Passenger Seat Back Blower Speed Short to Battery) — If the passenger seat backrest blower speed circuit is shorted to voltage, the DCSM will shut down the passenger seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST BL: DTC B19A2

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
BL1 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Ignition ON. Measure voltage between C3265C-4, circuit VHS21 (BU/WH), harness side and ground. Is any voltage present?	Yes GO to BL2 . No GO to BL3 .
BL2 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Disconnect: Backrest TED C3039 . Measure voltage between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No GO to BL3 .
BL3 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR FEED CIRCUITS FOR A SHORT TOGETHER
Ignition OFF. Disconnect: Backrest TED C3039 . Measure the resistance between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and C3265C-8, circuit CHS08 (BN/YE), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to BL4 . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .
BL4 CHECK THE BACKREST TED RESISTANCE FOR AN INTERNAL SHORT
Measure the resistance between backrest TED C3039 pin 2 and pin 7, component side. Is the resistance greater than 2,000,000 ohms?	Yes INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B . No INSTALL a new backrest TED . REFER to Seat Backrest Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test BM: DTC B19A3

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

DTC B19A3 (Driver Seat Cushion Blower Speed Short to Battery) — If the driver seat cushion blower speed circuit is shorted to voltage, the DCSM will shut down the driver seat system and set this DTC.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
TED and blower assembly
DCSM

PINPOINT TEST BM: DTC B19A3

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is on.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
BM1 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Ignition OFF. Depower the SRS . Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B . Disconnect: Driver Seat Side Air Bag C367 . Disconnect: Driver Safety Belt Buckle C3065 . Disconnect: Passenger Seat Side Air Bag C337 . Disconnect: Passenger Safety Belt Buckle C3066 . Disconnect: DCSM C3265C . WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment. Connect the battery ground cable. Refer to Section 414-01 . Ignition ON. Measure voltage between C3265C-11, circuit VHS18 (BN/GN), harness side and ground. Is any voltage present?	Yes GO to BM2 . No GO to BM3 .
BM2 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Disconnect: Cushion TED C3035 . Measure voltage between C3265C-11, circuit VHS18 (BN/GN), harness side and ground. Is any voltage present?	Yes REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No GO to BM3 .
BM3 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR FEED CIRCUITS FOR A SHORT TOGETHER
Ignition OFF. Disconnect: Cushion TED C3035 . Measure the resistance between DCSM C3265C-11, circuit VHS18 (BN/GN), harness side and C3265C-16, circuit CHS03 (GN/BN), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to BM4 . No REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .
BM4 CHECK THE CUSHION TED RESISTANCE FOR AN INTERNAL SHORT
Measure the resistance between cushion TED C3035 pin 2 and pin 7, component side. Is the resistance greater than 2,000,000 ohms?	Yes INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B . No INSTALL a new cushion TED . REFER to Seat Cushion Thermo-Electric Device in this section. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337 and passenger safety belt buckle C3066. CONNECT driver seat side air bag C367 and driver safety belt buckle C3065. REPOWER the SRS . REFER to Section 501-20B .

Pinpoint Test BN: A Single Climate Controlled Seat is Inoperative

Refer to Wiring Diagrams Cell 119 , Climate Controlled Seats for schematic and connector information.

Normal Operation

The Dual Climate Controlled Seat Module (DCSM) is supplied voltage at all times, but the climate controlled seat system only operates with the engine running. The system can be operated with the ignition ON engine OFF by using a scan tool to bypass the climate controlled seat buttons on the touchscreen interface. When commanding a heat or cool mode operation in this manner, it only operates in 15 second intervals. Both voltage supply circuits are spliced together internal to the DCSM , so if one circuit becomes open, both seats can still be operated. However, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat is disabled by the DCSM .

When the climate control seat buttons are activated on the touchscreen interface, the APIM sends the climate controlled seat commands to the Front Controls Interface Module (FCIM) using the I-CAN . The FCIM sends the request message to the IPC using the I-CAN . The IPC sends the request message to the BCM over the HS-CAN . Finally the BCM sends the communicates climate controlled seat commands to the DCSM using the MS-CAN .

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Touchscreen
DCSM

PINPOINT TEST BN: A SINGLE CLIMATE CONTROLLED SEAT IS INOPERATIVE

Test Step	Result / Action to Take
BN1 CHECK OPERATION OF BOTH CLIMATE CONTROLLED SEATS AND VERIFY THE SYMPTOM
Check the operation of both climate controlled seats and verify the symptom. Is only a single climate controlled seat inoperative?	Yes GO to BN2 . No If both seats are inoperative, GO to Symptom Chart .
BN2 CHECK FOR DCSM DTCs
Enter the following diagnostic mode on the scan tool: Self Test — DCSM . Were any DTCs retrieved during the self-tests?	Yes GO to the Dual Climate Controlled Seat Module (DCSM) DTC Chart. No GO to BN3 .
BN3 CHECK OPERATION OF THE DCSM USING PIDs
NOTE: The purpose of this step is to verify the DCSM is able to receive and process inbound command messages from the network and demonstrate if the DCSM is operational. This indicates the FCIM may not be sending the commands correctly. Enter the following diagnostic mode on the scan tool: DataLogger — DCSM . Driver Seat Seat cushion thermal electric device temperature (CSHTEMP) Seat back thermal electric device temperature (BK_TEMP) Climate-controlled seat heat command (TED_HEAT_D) Front Passenger Seat Passenger Cushion Thermal Electric Device ( TED ) Temperature (PCSHTMP) Passenger Back TED Temperature (PBKTMP) Passenger TED Heat Mode (TED_HEAT_P) NOTE: The DCSM active commands TED_HEAT_D (driver seat) and TED_HEAT_P (passenger seat) are limited to 15 seconds in the ON state. Operate the affected climate controlled seat using the active command while monitoring the appropriate PIDs for that seat. When the command is in process the TED temperature PIDs on the affected seat should momentarily increase. If no temperature increase is noted, remove the cushion blower filter and repeat the active command while physically monitoring the cushion blower for fan movement. Do the PID states or cushion blower movement indicate climate controlled seat operation when using the active command?	Yes GO to BN4 . No INSTALL a new DCSM . REFER to Dual Climate Controlled Seat Module (DCSM) in this section. REPEAT the self-test.
BN4 USE THE TOUCHSCREEN BUTTONS AND MONITOR THE DCSM PID FOR A RESPONSE
Enter the following diagnostic mode on the scan tool: DataLogger — DCSM . Driver State Seat Mode (DCCSMOD) (driver seat) Passenger State Seat Mode (PCCSMOD) (passenger seat) Start the engine. NOTE: Operation of the climate controlled seats repeatedly on and off or repeatedly switching between heat and cool modes may cause DCSM DTCs to set, disabling one or both seat system and may require DTCs to be cleared before seat operation may continue. It is recommended to allow time between modes for seat temperatures to return toward ambient temperatures before continuing. Attempt to operate the affected climate controlled seat in all modes using the appropriate buttons on the touchscreen interface while monitoring the DCSM PID DCCSMOD (driver seat) or PCCSMOD (passenger seat). Do all the PID states match the climate controlled seat settings selected on the touchscreen interface?	Yes If the fault is intermittent, CHECK for causes of the intermittent fault. INSPECT the connectors, terminals and wiring. ATTEMPT to recreate the fault by flexing the wire harness and operating the system. CHECK the electrical connectors for corrosion, poor pin contact or pushed-out pins. REPAIR any intermittent concerns found and TIGHTEN any loose DCSM connector pins. CLEAR the DTCs. REPEAT the self-test. No REFER to Section 415-00B or Section 415-00C to diagnose the inoperative touchscreen button(s). TEST the system for normal operation.