SECTION 412-00: Climate Control System — General Information and Diagnostics
2014 Flex Workshop Manual
DIAGNOSIS AND TESTING
Procedure revision date: 05/02/2013

Climate Control System


Special Tool(s)
A/C Flush Adapter Kit
219-00074 or equivalent
A/C Flush and Purge Fitting Kit
219-00024 or equivalent
Flex Probe Kit
NUD105-R025D or equivalent
Pressure Test Kit
014-R1072 or equivalent
R-134a Manifold Gauge Set
176-R032A or equivalent
Refrigerant Leak Detector
216-00001 or equivalent
Test Light
SGT27000 or equivalent 250-300 mA incandescent bulb test lamp
 

Principles of Operation

For additional refrigerant system and component information, refer to Section 412-01 .

 

Climate Control System Network Communication

The controls for the climate control system are in one or more locations depending on vehicle option content:

When the FDIM touchscreen or voice commands are used, the APIM sends a function request message over the I-CAN to the FCIM .

When the IPC steering wheel controls are used, the IPC sends a function request message over the I-CAN to the FCIM .

The FCIM receives the climate control selections from pressing the buttons on its own controls (interface), the APIM or IPC and sends the requests to the HVAC module in the following message path:

For EMTC systems, the messaging path is followed in reverse for any status updates that need to be sent from the HVAC module to the FCIM , then if applicable, to the IPC or FCDIM (through the APIM ).

For DATC systems, the messaging path is followed in reverse for any status updates that need to be sent from the HVAC module to the FCIM , FCDIM (non-touchscreen), FDIM (through the APIM ) and IPC message center.

 

Climate Control System Logic

Blower Motor Speed

When blower speed is selected, the FCIM sends the desired blower speed to the HVAC module using the message path described above. The HVAC module then commands the blower motor speed control to the desired speed. The HVAC module monitors the blower motor speed control feedback circuit to make sure the blower motor is at the desired speed.

Airflow Mode Selection

When an airflow mode is selected, the FCIM determines the applicable and allowable airflow direction. The FCIM then sends this desired airflow direction to the HVAC module using the message path described above. The HVAC module determines the actuator position required to deliver the correct airflow direction. While monitoring the defrost/panel/floor feedback circuit, the HVAC module drives the actuator until the feedback circuit indicates the actuator has reached its required position.

Temperature Selection

When a temperature is selected, the FCIM sends the desired temperature selection to the HVAC module using the message path described above. The HVAC module then determines the temperature blend door desired position. While monitoring the temperature blend door feedback circuit, the HVAC module drives the actuator until the feedback circuit indicates the actuator has reached its desired position.

Air Inlet Selection

When fresh air or RECIRC mode is selected, the FCIM sends the desired selection to the HVAC module using the message path described above. The HVAC module drives the air inlet mode door actuator until the HVAC module detects the actuator reached its end of travel. A spike in current draw tells the HVAC module the actuator has reached the end of its travel.

A/C Selection

When A/C is selected, the FCIM sends the selection to the HVAC module using the message path described above. If the ambient air temperature is sufficient, the HVAC module then sends the request to the BCM over the MS-CAN . The BCM then sends the request to the PCM over the HS-CAN .

 

FET Protection

A FET is a type of transistor that, when used with module software, monitors and controls current flow on module outputs. The FET protection strategy prevents module damage in the event of excessive current flow.

The HVAC module utilizes a FET protective circuit strategy for its actuator outputs. Output load (current level) is monitored for excessive current (typically short circuits) and shuts down (turns off the voltage or ground provided by the module) when a fault event is detected. A short circuit DTC is stored at the fault event and a cumulative counter is started.

When the demand for the output is no longer present, the module resets the FET circuit protection to allow the circuit to function. The next time the driver requests a circuit to activate that has been shut down by a previous short ( FET protection) and the circuit is still shorted, the FET protection shuts off the circuit again and the cumulative counter advances. If excessive circuit load occurs repeatedly, the module shuts down the output until a repair procedure is carried out.

When each tolerance level is reached, DTC U1000:00 should set (U1000:00 may or may not set) along with the short circuit DTC that was stored on the first failure. These DTCs cannot be cleared by a command to clear the DTCs. The module does not allow the DTC to be cleared or the circuit to be restored to normal operation until a successful self-test proves the fault has been repaired. After the self-test has successfully completed (no on-demand DTCs present), DTC U1000:00 and the associated DTC (the DTC related to the shorted circuit) automatically clears and the circuit function returns.

The module never resets the fault event counter to zero and continues to advance the fault event counter as short circuit fault events occur. If the number of short circuit fault events reach the third level, DTC U3000:49 set along with the associated short circuit DTC. DTC U3000:49 cannot be cleared and a new module must be installed after the initial fault is repaired .

 

CASS

Liquid refrigerant may accumulate in the A/C compressor under certain conditions. To alleviate damage to the A/C compressor, CASS is utilized.

CASS is initiated only under specific conditions:

When these conditions are present, the PCM activates the A/C control relay prior to cranking of the engine. The A/C control relay engages the A/C compressor for approximately 4-15 A/C compressor revolutions or a maximum of 2 seconds (depending upon vehicle application), allowing the liquid refrigerant to be pushed from the A/C compressor. CASS is initiated by the PCM regardless of the HVAC system settings.

 

The Refrigerant Cycle

During stabilized conditions (A/C system shutdown), the refrigerant pressures are equal throughout the system. When the A/C compressor is in operation, it increases pressure on the refrigerant vapor, raising its temperature. The high-pressure and high-temperature vapor is then released into the top of the A/C condenser core.

The A/C condenser, being close to ambient temperature, causes the refrigerant vapor to condense into a liquid when heat is removed from the refrigerant by ambient air passing over the fins and tubing. The now liquid refrigerant, still at high pressure, exits from the bottom of the A/C condenser and enters the inlet side of the A/C receiver/drier. The receiver/drier is designed to remove moisture from the refrigerant.

The outlet of the receiver/drier is connected to the TXV . The TXV provides the orifice which is the restriction in the refrigerant system and separates the high and low pressure sides of the A/C system. As the liquid refrigerant passes across this restriction, its pressure and boiling point are reduced.

The liquid refrigerant is now at its lowest pressure and temperature. As it passes through the A/C evaporator, it absorbs heat from the airflow passing over the plate/fin sections of the A/C evaporator. This addition of heat causes the refrigerant to boil (convert to gas). The now cooler air can no longer support the same humidity level of the warmer air and this excess moisture condenses on the exterior of the evaporator coils and fins and drains outside the vehicle.

The refrigerant cycle is now repeated with the A/C compressor again increasing the pressure and temperature of the refrigerant.

The evaporator temperature sensor (attached to the evaporator core fins) controls A/C clutch cycling. If the temperature of the evaporator core is low enough to cause the condensed water vapor to freeze, the A/C clutch is disengaged by the vehicle PCM.

The externally controlled variable displacement compressor is electronically controlled by the PCM. The PCM pulse width modulates the solenoid in the compressor to control the compressor displacement. The PCM changes the compressor displacement based upon the:

The high-side line pressure is monitored so that A/C compressor operation will be interrupted if the system pressure becomes too high or is determined to be too low (low charge condition).

The A/C compressor pressure relief valve opens and vents refrigerant to relieve unusually high system pressure.

 
TXV Type Refrigerant System — GTDI


Item Description
1 A/C evaporator core
2 A/C evaporator core temperature sensor
3 TXV
4 A/C suction line
5 A/C charge valve port (low side)
6 A/C compressor
7 A/C pressure relief valve
8 A/C pressure transducer
9 Compressor discharge line
10 Low pressure vapor
11 High pressure vapor
12 Low pressure liquid
13 High pressure liquid
14 A/C condenser core
15 Condenser-to-receiver/drier line
16 A/C receiver/drier
17 A/C charge valve port (high side)
18 Evaporator inlet line



 
TXV Type Refrigerant System — Ti-VCT


Item Description
1 A/C evaporator core
2 A/C evaporator core temperature sensor
3 TXV
4 A/C charge valve port (low side)
5 A/C suction line
6 A/C compressor
7 A/C pressure relief valve
8 A/C pressure transducer
9 Low pressure vapor
10 High pressure vapor
11 Low pressure liquid
12 High pressure liquid
13 Compressor discharge line
14 A/C desiccant bag
15 A/C condenser core with A/C receiver/drier
16 Condenser-to-evaporator line
17 A/C charge valve port (high side)

 

Inspection and Verification

  1. Verify the customer concern by operating the climate control system to duplicate the condition.
  1. Visually inspect for obvious signs of mechanical or electrical damage.

      Visual Inspection Chart

    Mechanical Electrical
    • Loose, missing or damaged A/C compressor drive belt
    • Loose or disconnected A/C clutch
    • Broken or binding door/actuator
    • Broken or leaking refrigerant lines
    • Obstructed in-vehicle temperature/humidity sensor
    • BJB fuse(s):
      • 18 (40A)
      • 39 (30A)
      • 62 (10A)
      • 70 (15A)
      • 92 (10A)
      • 93 (5A)
    • Blower motor inoperative
    • A/C compressor inoperative
    • Circuitry open/shorted
    • Disconnected electrical connectors
    • Cooling fan inoperative

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

  1. NOTE: Make sure to use the latest scan tool software release.

    If the cause is not visually evident, connect the scan tool to the DLC .

  1. NOTE: The VCM LED prove-out confirms voltage and ground from the DLC are provided to the VCM .

    If the scan tool does not communicate with the VCM :
  1. If the scan tool does not communicate with the vehicle:
  1. Carry out the network test.
  1. Clear the CMDTCs and carry out the self-test diagnostics from the PCM, HVAC module.

  1. NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the PCM DTC Chart.

    If the PCM DTCs retrieved are related to the concern, go to the PCM DTC Chart in this section. If the HVAC module DTCs retrieved are related to the concern, go to the HVAC Module DTC Chart in this section. For all other DTCs, refer to Section 419-10 .
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart - Climate Control Systems or GO to Symptom Chart - NVH .
 

DTC Charts

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

 


 PCM DTC Chart

DTC Description Action to Take
P0532 A/C Refrigerant Pressure Sensor A Circuit Low GO to Pinpoint Test A .
P0533 A/C Refrigerant Pressure Sensor A Circuit High GO to Pinpoint Test A .
P0645 A/C Clutch Relay Control Circuit GO to Pinpoint Test B .
P06A0 Variable A/C Compressor Control Circuit GO to Pinpoint Test Z .
P1464 A/C Demand Out Of Self Test Range If the HVAC selector was not powered off, POWER the HVAC off, CLEAR the DTCs and REPEAT the self-test. If the DTC does not return, IGNORE the DTC and CONTINUE diagnosing other DTCs or symptoms. If the DTC returns, GO to Pinpoint Test N .
All Other DTCs — REFER to Section 303-14 .

 


 HVAC Module DTC Chart

NOTE: This module utilizes a 5-character DTC followed by a 2-character failure type code. The failure type code provides information about specific fault conditions such as opens or shorts to ground. CMDTCs have an additional 2-character DTC status code suffix to assist in determining DTC history.

NOTE: Network DTCs (U-codes) are often a result of intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, vehicle repair procedures such as module reprogramming often set network DTCs. Replacing a module to resolve a network DTC is unlikely to resolve the concern. To prevent repeat network DTC concerns, inspect all network wiring, especially connectors. Test the vehicle battery, refer to Section 414-01 .

NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the PCM DTC Chart.

DTC Description Action to Take
B1034:11 Left Front Seat Heater Element: Circuit Short to Ground REFER to Section 501-10 .
B1034:13 Left Front Seat Heater Element: Circuit Open REFER to Section 501-10 .
B1036:11 Right Front Seat Heater Element: Circuit Short to Ground REFER to Section 501-10 .
B1036:13 Right Front Seat Heater Element: Circuit Open REFER to Section 501-10 .
B1038:11 Left Front Seat Heater Sensor: Circuit Short to Ground REFER to Section 501-10 .
B1038:12 Left Front Seat Heater Sensor: Circuit Short to Battery REFER to Section 501-10 .
B103A:11 Right Front Seat Heater Sensor: Circuit Short to Ground REFER to Section 501-10 .
B103A:12 Right Front Seat Heater Sensor: Circuit Short to Battery REFER to Section 501-10 .
B1081:07 Left Temperature Damper Motor: Mechanical Failure INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new LH temperature blend door actuator. REFER to Section 412-01 . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
B1081:11 Left Temperature Damper Motor: Circuit Short to Ground GO to Pinpoint Test O .
B1081:12 Left Temperature Damper Motor: Circuit Short to Battery GO to Pinpoint Test O .
B1081:13 Left Temperature Damper Motor: Circuit Open GO to Pinpoint Test O .
B1082:07 Right Temperature Damper Motor: Mechanical Failure INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new RH temperature blend door actuator. REFER to Section 412-01 . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
B1082:11 Right Temperature Damper Motor: Circuit Short to Ground GO to Pinpoint Test P .
B1082:12 Right Temperature Damper Motor: Circuit Short to Battery GO to Pinpoint Test P .
B1082:13 Right Temperature Damper Motor: Circuit Open GO to Pinpoint Test P .
B1083:07 Recirculation Damper Motor: Mechanical Failure INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new air inlet mode door actuator. REFER to Section 412-01 . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
B1083:11 Recirculation Damper Motor: Circuit Short to Ground GO to Pinpoint Test I .
B1083:12 Recirculation Damper Motor: Circuit Short to Battery GO to Pinpoint Test I .
B1083:13 Recirculation Damper Motor: Circuit Open GO to Pinpoint Test I .
B1086:07 Air Distribution Damper Motor: Mechanical Failure INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new defrost/panel/floor mode door actuator. REFER to Section 412-01 . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
B1086:11 Air Distribution Damper Motor: Circuit Short to Ground GO to Pinpoint Test J .
B1086:12 Air Distribution Damper Motor: Circuit Short to Battery GO to Pinpoint Test J .
B1086:13 Air Distribution Damper Motor: Circuit Open GO to Pinpoint Test J .
B10AF:12 Blower Fan Relay: Circuit Short to Battery GO to Pinpoint Test Q .
B10AF:13 Blower Fan Relay: Circuit Open GO to Pinpoint Test Q .
B10B0:12 Rear Blower Fan Relay: Circuit Short to Battery GO to Pinpoint Test S .
B10B0:13 Rear Blower Fan Relay: Circuit Open GO to Pinpoint Test S .
B10B7:11 Rear Air Discharge Temperature: Circuit Short to Ground GO to Pinpoint Test U .
B10B7:15 Rear Air Discharge Temperature: Circuit Short to Battery or Open GO to Pinpoint Test U .
B10B9:12 Blower Control: Circuit Short to Battery GO to Pinpoint Test R .
B10B9:14 Blower Control: Circuit Short to Ground or Open GO to Pinpoint Test Q .
B10BA:12 Rear Blower Control: Circuit Short to Battery GO to Pinpoint Test T .
B10BA:14 Rear Blower Control: Circuit Short to Ground or Open If the auxiliary blower motor does not operate, REFER to GO to Pinpoint Test S .

If the auxiliary blower motor is always on HIGH, REFER to GO to Pinpoint Test T .
B11E3:07 Rear HVAC Damper Motor: Mechanical Failure INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new Auxiliary temperature blend door actuator. REFER to Section 412-02 . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
B11E3:11 Rear HVAC Damper Motor: Circuit Short to Ground GO to Pinpoint Test U .
B11E3:12 Rear HVAC Damper Motor: Circuit Short to Battery GO to Pinpoint Test U .
B11E3:13 Rear HVAC Damper Motor: Circuit Open GO to Pinpoint Test U .
B11E4:07 Rear Air Distribution Damper Motor: Mechanical Failure INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new auxiliary mode door actuator. REFER to Section 412-02 . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
B11E4:11 Rear Air Distribution Damper Motor: Circuit Short to Ground GO to Pinpoint Test V .
B11E4:12 Rear Air Distribution Damper Motor: Circuit Short to Battery GO to Pinpoint Test V .
B11E4:13 Rear Air Distribution Damper Motor: Circuit Open GO to Pinpoint Test V .
B11E5:11 Left HVAC Damper Position Sensor: Circuit Short to Ground GO to Pinpoint Test O .
B11E5:15 Left HVAC Damper Position Sensor: Circuit Short to Battery or Open GO to Pinpoint Test O .
B11E6:11 Right HVAC Damper Position Sensor: Circuit Short to Ground GO to Pinpoint Test P .
B11E6:15 Right HVAC Damper Position Sensor: Circuit Short to Battery or Open GO to Pinpoint Test P .
B11E7:11 Air Distribution Damper Position Sensor: Circuit Short to Ground GO to Pinpoint Test J .
B11E7:15 Air Distribution Damper Position Sensor: Circuit Short to Battery or Open GO to Pinpoint Test J .
B11EB:11 Rear HVAC Temperature Control Input: Circuit Short To Ground GO to Pinpoint Test W .
B11EB:15 Rear HVAC Temperature Control Input: Circuit Short To Battery or Open GO to Pinpoint Test W .
B11EC:11 Rear HVAC Blower Control Input: Circuit Short To Ground GO to Pinpoint Test W .
B11EC:15 Rear HVAC Blower Control Input: Circuit Short To Battery or Open GO to Pinpoint Test W .
B11F0:11 Air Intake Damper Position Sensor: Circuit Short To Ground GO to Pinpoint Test I .
B11F0:15 Air Intake Damper Position Sensor: Circuit Short To Battery or Open GO to Pinpoint Test I .
B121D:11 Rear HVAC Mode Control Input: Circuit Short To Ground GO to Pinpoint Test W .
B121D:15 Rear HVAC Mode Control Input: Circuit Short To Battery or Open GO to Pinpoint Test W .
B127C:11 Ambient Lighting Zone 2 Output Red LED: Circuit Short To Ground REFER to Section 417-02 .
B127C:12 Ambient Lighting Zone 2 Output Red LED: Circuit Short To Battery REFER to Section 417-02 .
B127C:13 Ambient Lighting Zone 2 Output Red LED: Circuit Open REFER to Section 417-02 .
B127F:11 Ambient Lighting Zone 2 Output Green LED: Circuit Short To Ground REFER to Section 417-02 .
B127F:12 Ambient Lighting Zone 2 Output Green LED: Circuit Short To Battery REFER to Section 417-02 .
B127F:13 Ambient Lighting Zone 2 Output Green LED: Circuit Open REFER to Section 417-02 .
B1282:11 Ambient Lighting Zone 2 Output Blue LED: Circuit Short To Ground REFER to Section 417-02 .
B1282:12 Ambient Lighting Zone 2 Output Blue LED: Circuit Short To Battery REFER to Section 417-02 .
B1282:13 Ambient Lighting Zone 2 Output Blue LED: Circuit Open REFER to Section 417-02 .
B12F2:11 Ambient Lighting Zone 2 Output: Circuit Short To Ground REFER to Section 417-02 .
B12F2:12 Ambient Lighting Zone 2 Output: Circuit Short To Battery REFER to Section 417-02 .
B12F2:13 Ambient Lighting Zone 2 Output: Circuit Open REFER to Section 417-02 .
B1A61:11 Cabin Temperature Sensor Circuit Open: Circuit Short to Ground GO to Pinpoint Test D .
B1A61:15 Cabin Temperature Sensor Circuit Open: Circuit Short to Battery or Open If only DTC B1A61:15 is set, GO to Pinpoint Test D .

If DTCs B1A61:15, B1A63:15 and B1A64:15 all set, GO to Pinpoint Test AB .
B1A63:11 Right Solar Sensor: Circuit Short to Ground GO to Pinpoint Test E .
B1A63:15 Right Solar Sensor: Circuit Short to Battery or Open If only DTC B1A63:15 is set, GO to Pinpoint Test E .

If DTCs B1A61:15, B1A63:15 and B1A64:15 all set, GO to Pinpoint Test AB .
B1A64:11 Left Solar Sensor: Circuit Short to Ground GO to Pinpoint Test E .
B1A64:15 Left Solar Sensor: Circuit Short to Battery or Open If only DTC B1A64:15 is set, GO to Pinpoint Test E .

If DTCs B1A61:15, B1A63:15 and B1A64:15 all set, GO to Pinpoint Test AB .
B1A69:11 Humidity Sensor: Circuit Short to Ground GO to Pinpoint Test Y .
B1A69:15 Humidity Sensor: Circuit Short to Battery or Open GO to Pinpoint Test Y .
B1B71:11 Evaporator Temperature Sensor: Circuit Short to Ground GO to Pinpoint Test F .
B1B71:15 Evaporator Temperature Sensor: Circuit Short to Battery or Open GO to Pinpoint Test F .
B1B7D:11 Rear Air Distribution Actuator: Circuit Short to Ground GO to Pinpoint Test V .
B1B7D:15 Rear Air Distribution Actuator: Circuit Short to Battery or Open GO to Pinpoint Test V .
B1C83:11 Rear Defog Relay: Circuit Short to Ground REFER to Section 501-11 .
B1C83:13 Rear Defog Relay: Circuit Open REFER to Section 501-11 .
C1B14:11 Sensor Supply Voltage A: Circuit Short to Ground GO to Pinpoint Test C .
C1B14:12 Sensor Supply Voltage A: Circuit Short to Battery GO to Pinpoint Test C .
U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test AA .
U0401:09 Invalid Data Received From ECM/PCM A: Component Failure RETRIEVE and REPAIR all non-network DTCs in the PCM. REFER to Section 303-14 DTC Chart.
U0401:68 Invalid Data Received From ECM/PCM A: Event Information RETRIEVE and REPAIR all non-network DTCs in the PCM. REFER to Section 303-14 DTC Chart.
U0401:81 Invalid Data Received From ECM/PCM A: Invalid Serial Data Received RETRIEVE and REPAIR all non-network DTCs in the PCM. REFER to Section 303-14 DTC Chart.
U0401:82 Invalid Data Received From ECM/PCM A: Alive/Sequence Counter Incorrect/Not Updated RETRIEVE and REPAIR all non-network DTCs in the PCM. REFER to Section 303-14 DTC Chart.
U0422:68 Invalid Data Received From Body Control Module: Event Information RETRIEVE and REPAIR all non-network DTCs in the BCM . REFER to Section 419-10 DTC Chart.
U0422:81 Invalid Data Received From Body Control Module: Invalid Serial Data Received RETRIEVE and REPAIR all non-network DTCs in the BCM . REFER to Section 419-10 DTC Chart.
U0423:82 Invalid Data Received From Instrument Panel Cluster Control Module: Alive/Sequence Counter Incorrect/Not Updated RETRIEVE and REPAIR all non-network DTCs in the IPC . REFER to Section 413-01 DTC Chart.
U0554:82 Invalid Data Received From Accessory Protocol Interface Module: Alive/Sequence Counter Incorrect/Not Updated This DTC can set due to a fault in the APIM . RETRIEVE and REPAIR all non-network DTCs in the APIM . REFER to Section 415-00A , Section 415-00B or Section 415-00C .
U1000:00 Solid State Driver Protection Activated — Driver Disabled: No Sub Type Information The HVAC module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The HVAC module cannot enable the output until the cause of the short is corrected. ADDRESS all other DTCs first. After the cause of the concern is corrected, CLEAR the DTCs. REPEAT the self-test.
U2024:51 Control Module Cal-Config Data: Not Programmed CARRY OUT PMI on the HVAC module. REFER to Section 418-01 . REPEAT the self-test. If PMI is successful, the DTC will not be present. If the DTC returns, INSTALL a new HVAC module. REFER to Section 412-01 .
U2100:00 Initial Configuration Not Complete: No Sub Type Information CARRY OUT PMI on the HVAC module. REFER to Section 418-01 . REPEAT the self-test. If PMI is successful, the DTC will not be present. If the DTC returns, INSTALL a new HVAC module. REFER to Section 412-01 .
U3000:49 Control Module: Internal Electronic Failure The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the HVAC module can withstand. The cause of the excessive current draw MUST be corrected before a new HVAC module is installed. ADDRESS all other DTCs first. CLEAR the DTCs. REPEAT the self-test. If DTC U3000:49 is retrieved again, INSTALL a new HVAC module. REFER to Section 412-01 .
U3002:62 Vehicle Identification Number: Signal Compare Failure CARRY OUT PMI on the HVAC module using the scan tool. REFER to Section 418-01 .REPEAT the self-test. If PMI is successful, the DTC will not be present. If the DTC returns, INSTALL a new HVAC module. REFER to Section 412-01 .
U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test G .
U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test G .
All Other DTCs — REFER to the Master DTC Chart in Section 419-10 .

 

Symptom Chart — Climate Control Systems

 
Symptom Chart — Climate Control Systems

NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual.

Condition Possible Sources Action
  • No communication with the HVAC module
  • Fuse
  • Wiring, terminals or connectors
  • Communication network
  • HVAC module
  • Unable to duplicate the customer concern and no DTCs present
  • Refer to the Diagnostic Routine
  • The HVAC functions are inoperative/do not operate correctly from touchscreen only
  • Communication network
  • FCDIM
  • For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart and DIAGNOSE the touchscreen.
  • For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart and DIAGNOSE the touchscreen.
  • HVAC functions are inoperative/do not operate correctly from steering wheel switches/infotainment display only
  • Steering wheel switches
  • Clockspring
  • SCCM
  • IPC
  • For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart and DIAGNOSE the steering wheel switches.
  • For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart and DIAGNOSE the steering wheel switches.
  • For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart and DIAGNOSE the steering wheel switches.
  • The air inlet door is inoperative
  • Refer to the Diagnostic Routine
  • Incorrect/erratic direction of airflow from outlets
  • Refer to the Diagnostic Routine
  • Reduced outlet airflow
  • Refer to the Diagnostic Routine
  • Insufficient, erratic or no heat
  • Refer to the Diagnostic Routine
  • The air conditioning (A/C) is inoperative
  • Refer to the Diagnostic Routine
  • The air conditioning (A/C) operation is erratic. The discharge air warms up when the vehicle comes to a stop.
  • Refer to the Diagnostic Routine
  • DIAGNOSE all PCM DTCs before proceeding. REFER to the PCM DTC Chart in this section.
  • If no PCM DTCs are present GO to Pinpoint Test X .
  • The air conditioning (A/C) is always on — A/C compressor does not cycle
  • Refer to the Diagnostic Routine
  • The air conditioning (A/C) is always on — A/C mode always commanded ON
  • Refer to the Diagnostic Routine
  • Temperature control is inoperative/does not operate correctly
  • Refer to the Diagnostic Routine
  • The blower motor is inoperative
  • Refer to the Diagnostic Routine
  • The blower motor does not operate correctly
  • Refer to the Diagnostic Routine
  • The auxiliary blower motor is inoperative
  • Refer to the Diagnostic Routine
  • The auxiliary blower motor does not operate correctly
  • Refer to the Diagnostic Routine
  • If the auxiliary blower motor does not operate correctly from both the front and rear auxiliary controls, GO to Pinpoint Test T .
  • If the auxiliary blower motor does not operate correctly from the rear auxiliary controls only, GO to Pinpoint Test W .
  • If the auxiliary blower motor does not operate correctly from the front auxiliary controls only, CHECK for HVAC module DTCs. If HVAC DTCs are present, GO to the HVAC Module DTC Chart in this section. If no HVAC DTCs are present, INSTALL a new HVAC module. REFER to Section 412-01 .
  • The auxiliary temperature control is inoperative/does not operate correctly using the front/rear auxiliary climate controls
  • Refer to the Diagnostic Routine
  • If the auxiliary temperature control is inoperative/does not operate correctly from both the front and rear auxiliary controls, GO to Pinpoint Test U .
  • If the auxiliary temperature control is inoperative/does not operate correctly from the rear auxiliary controls only, GO to Pinpoint Test W .
  • If the auxiliary temperature control is inoperative/does not operate correctly from the front auxiliary controls only, CHECK for HVAC module DTCs. If HVAC DTCs are present, GO to the HVAC Module DTC Chart in this section. If no HVAC DTCs are present, INSTALL a new HVAC module. REFER to Section 412-01 .
  • The auxiliary panel/floor mode control is inoperative/does not operate correctly using the front/rear auxiliary climate controls
  • Refer to the Diagnostic Routine
  • If the auxiliary panel/floor mode control is inoperative/does not operate correctly from both the front and rear auxiliary controls, GO to Pinpoint Test V .
  • If the auxiliary panel/floor mode control is inoperative/does not operate correctly from the rear auxiliary controls only, GO to Pinpoint Test W .
  • If the auxiliary panel/floor mode control is inoperative/does not operate correctly from the front auxiliary controls only, CHECK for HVAC module DTCs. If HVAC DTCs are present, GO to the HVAC Module DTC Chart in this section. If no HVAC DTCs are present, INSTALL a new HVAC module. REFER to Section 412-01 .
  • The auxiliary temperature, panel/floor mode or blower motor controls are inoperative/do not operate correctly using the rear auxiliary climate controls only
  • Refer to the Diagnostic Routine
  • A/C pressure relief valve discharging
  • High system pressure
  • A/C pressure relief valve
  • CHECK the high side system pressure. If the pressure is below the A/C pressure relief valve open pressure, INSTALL a new A/C compressor. REFER to Section 412-01 . If the system pressure is above the A/C pressure relief valve open pressure, REPAIR the system for a restriction.
 

Symptom Chart — NVH

 
Symptom Chart — NVH

NOTE: NVH symptoms will be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, refer to Section 100-04 . Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, refer back to Section 100-04 for the next likely system and continue diagnosis.

Condition Possible Sources Action
  • Noisy A/C compressor
  • A/C compressor pulley bearing worn
  • INSPECT the A/C compressor pulley bearing for roughness. If bearing roughness is found, INSTALL a new A/C compressor. REFER to Section 412-01 .
    • A/C compressor bearing worn
    • INSPECT the A/C compressor bearing for roughness. If bearing roughness is found, INSTALL a new A/C compressor. REFER to Section 412-01 .
    • Excessive hissing from the front plenum when the A/C is on
    • Low refrigerant charge
     

    Pinpoint Tests

     

    Pinpoint Test A: DTC P0532 or P0533

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    The A/C pressure transducer receives a ground from the PCM. A 5-volt reference voltage is supplied to the A/C pressure transducer from the PCM. The A/C pressure transducer then sends a voltage to the PCM to indicate the A/C refrigerant pressure.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    P0532 A/C Refrigerant Pressure Sensor A Circuit Low: No Sub Type Information The A/C pressure transducer inputs a feedback voltage to the PCM. This DTC sets if the feedback voltage is less than 0.26 volts for at least 2 seconds and the ambient air temperature is greater than 0°C (32°F).
    P0533 A/C Refrigerant Pressure Sensor A Circuit High: No Sub Type Information The A/C pressure transducer inputs a feedback voltage to the PCM. This DTC sets if the feedback voltage is greater than 4.95 volts for at least 2 seconds and the ambient air temperature is greater than 0°C (32°F).

     
    PINPOINT TEST A: DTC P0532 OR P0533
    Test Step Result / Action to Take
      A1 CHECK THE PCM OUTPUT VOLTAGE  
    • Ignition OFF.
    • Disconnect: A/C Pressure Transducer.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-3 LE424 (YE/GN) — Ground



    • Is the voltage between 4.7 and 5.1 volts?
    		Yes
    GO to A4 .

    No
    If the voltage is below 4.7 volts, GO to A2 .

    If the voltage is greater than 5.1 volts, REPAIR the circuit.
      A2 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: PCM C175B (3.5L Ti-VCT ) or C1381B (3.5L GTDI ).
    • Disconnect: Generator Current Sensor.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-3 LE424 (YE/GN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to A3 .

    No
    REPAIR the circuit.
      A3 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR AN OPEN  
    • For 3.5L Ti-VCT engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-3 LE424 (YE/GN) C175B-52 LE424 (YE/GN)



    • For 3.5L GTDI engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-3 LE424 (YE/GN) C1381B-11 LE424 (YE/GN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to A13 .

    No
    REPAIR the circuit.
      A4 CHECK THE PCM SENSOR GROUND  
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-1 RE407 (YE/VT) C1260-3 LE424 (YE/GN)



    • Is the voltage between 4.7 and 5.1 volts?
    		Yes
    If diagnosing DTC P0532 , GO to A7 .

    If diagnosing DTC P0533 , GO to A10 .

    No
    GO to A5 .
      A5 CHECK THE SIGNAL RETURN CIRCUIT FOR VOLTAGE  
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-1 RE407 (YE/VT) — Ground



    • Is any voltage present?
    		Yes
    If the voltage is 5.1 volts or less, REPAIR circuit. RE407 (YE/VT) for a short to circuit LE424 (YE/GN).

    If the voltage is greater than 5.1 volts REPAIR circuit RE407 (YE/VT) for a short to voltage.

    No
    GO to A6 .
      A6 CHECK THE SIGNAL RETURN CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: PCM C175B (3.5L Ti-VCT ) or C1381B (3.5L GTDI ).
    • For 3.5L Ti-VCT engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-1 RE407 (YE/VT) C175B-56 RE407 (YE/VT)



    • For 3.5L GTDI engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-1 RE407 (YE/VT) C1381B-18 RE407 (YE/VT)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to A13 .

    No
    REPAIR the circuit.
      A7 CHECK THE A/C PRESSURE SENSOR (ACP_V) PCM PID WITH THE A/C PRESSURE TRANSDUCER SHORTED  
    • Connect a fused jumper wire between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-2 VH433 (VT/OG) C1260-3 LE424 (YE/GN)



    • Enter the following diagnostic mode on the scan tool: DataLogger — PCM.
    • Monitor the A/C Pressure Sensor (ACP_V) PCM PID voltage.
    • Does the ACP_V PCM PID voltage read between 4.7 and 5.1 volts?
    		Yes
    INSTALL a new A/C pressure transducer.

    No
    GO to A8 .
      A8 CHECK THE A/C PRESSURE TRANSDUCER FEEDBACK CIRCUIT FOR A SHORT TO THE SIGNAL RETURN CIRCUIT  
    • Ignition OFF.
    • Disconnect: PCM C175B (3.5L Ti-VCT ) or C1381B (3.5L GTDI ).
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-2 VH433 (VT/OG) C1260-1 RE407 (YE/VT)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to A9 .

    No
    REPAIR circuit VH433 (VT/OG) for a short to circuit RE407 (YE/VT).
      A9 CHECK THE A/C PRESSURE TRANSDUCER FEEDBACK CIRCUIT FOR AN OPEN  
    • For 3.5L Ti-VCT engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-2 VH433 (VT/OG) C175B-31 VH433 (VT/OG)



    • For 3.5L GTDI engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-2 VH433 (VT/OG) C1381B-52 VH433 (VT/OG)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to A13 .

    No
    REPAIR the circuit.
      A10 CHECK THE A/C PRESSURE TRANSDUCER  
    • Enter the following diagnostic mode on the scan tool: DataLogger — PCM.
    • Monitor the A/C Pressure Sensor (ACP_V) PCM PID voltage.
    • Does the ACP_V PCM PID voltage read 0 volts?
    		Yes
    INSTALL a new A/C pressure transducer.

    No
    GO to A11 .
      A11 CHECK THE A/C PRESSURE TRANSDUCER FEEDBACK CIRCUIT FOR VOLTAGE  
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-2 VH433 (VT/OG) — Ground



    • Is any voltage present?
    		Yes
    GO to A12 .

    No
    GO to A13 .
      A12 CHECK THE A/C PRESSURE TRANSDUCER FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: PCM C175B (3.5L Ti-VCT ) or C1381B (3.5L GTDI ).
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1260-2 VH433 (VT/OG) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    REPAIR circuit VH433 (VT/OG) for a short to circuit LE424 (YE/GN).
      A13 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all PCM 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 all PCM connectors. Make sure they seat and latch correctly.
    • 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 PCM. REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test B: DTC P0645

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    Voltage is provided to the A/C clutch relay coil. When A/C is requested and A/C line pressures allow, a ground is provided to the A/C clutch relay coil from the PCM, energizing the A/C clutch relay.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    P0645 A/C Clutch Relay Control Circuit: No Sub Type Information The DTC sets when the PCM grounds the relay circuit and more current than expected is detected on the relay circuit. The DTC also sets when the relay circuit is off and no voltage is detected on the relay circuit.

     
    PINPOINT TEST B: DTC P0645
    Test Step Result / Action to Take
      B1 CHECK THE VOLTAGE TO THE A/C CLUTCH RELAY  
    • Ignition OFF.
    • Disconnect: A/C Clutch Relay.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-2 CBK03 (GY) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to B2 .

    No
    VERIFY BJB fuse 70 (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.
      B2 CHECK THE A/C CLUTCH RELAY  
    • Carry out the Relay - Ultra Micro ISO component test on the A/C clutch relay.

      Refer to Wiring Diagrams Cell 149 for component testing.

    • Did the relay pass the component test?
    		Yes
    GO to B3 .

    No
    INSTALL a new A/C clutch relay.
      B3 CHECK THE A/C CLUTCH RELAY COIL CONTROL CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: PCM C175B (3.5L Ti-VCT ) or C1381B (3.5L GTDI ).
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-1 CH302 (WH/BN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to B4 .
      B4 CHECK THE A/C CLUTCH RELAY COIL CONTROL CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-1 CH302 (WH/BN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to B5 .

    No
    REPAIR the circuit.
      B5 CHECK THE A/C CLUTCH RELAY COIL CONTROL CIRCUIT FOR AN OPEN  
    • For 3.5L Ti-VCT engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-1 CH302 (WH/BN) C175B-12 CH302 (WH/BN)



    • For 3.5L GTDI engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-1 CH302 (WH/BN) C1381B-2 CH302 (WH/BN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to B6 .

    No
    REPAIR the circuit.
      B6 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all PCM 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 all PCM connectors. Make sure they seat and latch correctly.
    • 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 PCM. REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test C: DTCs C1B14:11 or 12

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    A 5-volt reference voltage is supplied to the sensors and actuators from the HVAC module.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    C1B14:11 Sensor Supply Voltage A: Circuit Short to Ground This CMDTC sets when the HVAC module senses less than 5 volts on the sensor reference voltage circuit, indicating a short to ground.
    C1B14:12 Sensor Supply Voltage A: Circuit Short to Battery This CMDTC sets when the HVAC module senses greater than 5 volts on the sensor reference voltage circuit, indicating a short to voltage.

     
    PINPOINT TEST C: DTCs C1B14:11 OR 12
    Test Step Result / Action to Take
      C1 CHECK THE HVAC MODULE DTCs  
    • Review the recorded DTCs from the HVAC module self-test.
    • Is DTC C1B14:11 present?
    		Yes
    GO to C2 .

    No
    GO to C5 .
      C2 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: HVAC Module — EMTC C2357B.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) — Ground



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to C3 .

    No
    REPAIR the circuit.
      C3 CHECK THE REFERENCE VOLTAGE CIRCUIT AND THE SIGNAL RETURN CIRCUIT FOR A SHORT TOGETHER  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C228A-23 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C2357A-23 RH111 (GY/BU)



    • Is the resistance greater than 200 ohms?
    		Yes
    GO to C6 .

    No
    GO to C4 .
      C4 CHECK THE A/C COMPONENTS  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C228A-23 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C2357A-23 RH111 (GY/BU)



    • While measuring the resistance, disconnect the following components one at a time, in order. Stop disconnecting components if the measured resistance rises above 200 ohms.
      • Defrost/panel/floor door actuator
      • LH temperature blend door actuator
      • ( DATC only) RH temperature blend door actuator
      • Air inlet mode door actuator
      • In-vehicle temperature/humidity sensor
    • Did the resistance rise above 200 ohms?
    		Yes
    INSTALL a new actuator (the last one to be disconnected). REFER to Section 412-01 . When installing an actuator, CONNECT the actuator electrical connector before the HVAC module connector(s). This allows the actuator to be calibrated when the HVAC module is reconnected. TEST the system for normal operation.

    No
    REPAIR circuits LH111 (BN/WH) and RH111 (GY/BU) for a short together.
      C5 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Ignition ON.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to C6 .
      C6 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test D: DTCs B1A61:11 or 15

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    The in-vehicle temperature and humidity sensor receives a ground from the HVAC module. The sensor varies its resistance with the temperature. As the temperature rises, the resistance falls. As the temperature falls the resistance rises. The HVAC module measures this resistance to determine the temperature at the sensor. The sensor DTCs set if there is a fault in either the temperature or humidity part of the sensor or circuits.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1A61:11 Cabin Temperature Sensor: Circuit Short to Ground This CMDTC and on demand DTC sets when the HVAC module senses lower than expected voltage on the sensor feedback circuit, indicating a short to ground.
    B1A61:15 Cabin Temperature Sensor: Circuit Short to Battery or Open This CMDTC and on demand DTC sets when the HVAC module senses greater than expected voltage on the sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.

     
    PINPOINT TEST D: DTCs B1A61:11 OR 15
    Test Step Result / Action to Take
      D1 CHECK THE IN-VEHICLE TEMPERATURE/HUMIDITY SENSOR RESISTANCE  
    • Ignition OFF.
    • Disconnect: In-Vehicle Temperature/Humidity Sensor.
    • Carry out the In-Vehicle Temperature/Humidity Sensor component test in this section.
    • Does the in-vehicle temperature/humidity sensor test OK?
    		Yes
    GO to D2 .

    No
    INSTALL a new in-vehicle temperature/humidity sensor. REFER to Section 412-01 .
      D2 CHECK THE HVAC MODULE OUTPUT VOLTAGE  
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2247-2 VH414 (GN/BU) C2247-5 RH111 (GY/BU)



    • Is the voltage between 4.7 and 5.1 volts?
    		Yes
    INSTALL a new in-vehicle temperature/humidity sensor. REFER to Section 412-01 . CLEAR the DTCs. REPEAT the self-test. If the DTC returns, GO to D8 .

    No
    For DTC B1A61:11 , GO to D6 .

    For DTC B1A61:15 , GO to D3 .
      D3 CHECK THE IN-VEHICLE TEMPERATURE/HUMIDITY SENSOR FEEDBACK CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: HVAC Module — EMTC C2357B.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-29 VH414 (GN/BU) C2247-2 VH414 (GN/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357B-29 LH111 (BN/WH) C2247-2 VH414 (GN/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to D4 .

    No
    REPAIR the circuit.
      D4 CHECK THE SIGNAL RETURN CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C2247-5 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C2247-5 RH111 (GY/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to D5 .

    No
    REPAIR the circuit.
      D5 CHECK THE SIGNAL RETURN CIRCUIT FOR SHORT TO VOLTAGE  
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2247-2 VH414 (GN/BU) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to D8 .
      D6 CHECK THE IN-VEHICLE TEMPERATURE/HUMIDITY SENSOR FEEDBACK CIRCUIT FOR A SHORT TO THE SIGNAL RETURN CIRCUIT  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2247-2 VH414 (GN/BU) C2247-5 RH111 (GY/BU)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to D7 .

    No
    REPAIR the circuits.
      D7 CHECK THE IN-VEHICLE TEMPERATURE SENSOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2247-2 VH414 (GN/BU) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to D8 .

    No
    REPAIR the circuit.
      D8 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test E: DTCs B1A63:11, B1A63:15, B1A64:11, B1A64:15

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    As the light applied to the sensor changes, the HVAC module detects the change through the RH and LH feedback circuits.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1A63:11 Right Solar Sensor: Circuit Short to Ground This CMDTC and on demand DTC sets when the HVAC module senses lower than expected voltage on the RH sensor feedback circuit, indicating a short to ground.
    B1A63:15 Right Solar Sensor: Circuit Short to Battery or Open This CMDTC and on demand DTC sets when the HVAC module senses greater than expected voltage on the RH sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.
    B1A64:11 Left Solar Sensor: Circuit Short to Ground This CMDTC and on demand DTC sets when the HVAC module senses lower than expected voltage on the LH sensor feedback circuit, indicating a short to ground.
    B1A64:15 Left Solar Sensor: Circuit Short to Battery or Open This CMDTC and on demand DTC sets when the HVAC module senses greater than expected voltage on the LH sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.

     
    PINPOINT TEST E: DTCs B1A63:11, B1A63:15, B1A64:11, B1A64:15
    Test Step Result / Action to Take
      E1 CHECK THE AUTOLAMP/SUNLOAD SENSOR REFERENCE VOLTAGE  
    • Ignition OFF.
    • Disconnect: Autolamp/Sunload Sensor.
    • Ignition ON.
    • Press the AUTO button.
    • For DTC B1A63:11 or B1A63:15, measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C286-3 VH416 (VT/GY) C286-4 GD374 (BK/WH)



    • For DTC B1A64:11 or B1A64:15, measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C286-1 VH417 (YE/OG) C286-4 GD374 (BK/WH)



    • Is the voltage between 4.7 and 5.1 volts?
    		Yes
    INSTALL a new autolamp/sunload sensor.

    No
    If DTCs B1A63:15 and B1A64:15 are both set, GO to E2 .

    If diagnosing DTC B1A63:11 or DTC B1A64:11 , GO to E5 .

    If diagnosing DTC B1A63:15 or DTC B1A64:15 , GO to E3 .
      E2 CHECK THE AUTOLAMP/SUNLOAD SENSOR GROUND CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C286-4 GD374 (BK/WH) — Ground



    • Is the resistance less than 3 ohms?
    		Yes
    INSTALL a new autolamp/sunload sensor.

    No
    REPAIR the circuit.
      E3 CHECK THE AUTOLAMP/SUNLOAD SENSOR FEEDBACK CIRCUITS FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • For DTC B1A63:15 measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-23 VH416 (VT/GY) C286-3 VH416 (VT/GY)



    • For DTC B1A64:15 measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-22 VH417 (YE/OG) C286-1 VH417 (YE/OG)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to E4 .

    No
    REPAIR the circuit.
      E4 CHECK THE AUTOLAMP/SUNLOAD SENSOR FEEDBACK CIRCUITS FOR A SHORT TO VOLTAGE  
    • Ignition ON.
    • For DTC B1A63:15 measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C286-3 VH416 (VT/GY) — Ground



    • For DTC B1A64:15 measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C286-1 VH417 (YE/OG) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to E6 .
      E5 CHECK THE AUTOLAMP/SUNLOAD SENSOR FEEDBACK CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • For DTC B1A63:15 measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C286-3 VH416 (VT/GY) — Ground



    • For DTC B1A64:15 measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C286-1 VH417 (YE/OG) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to E6 .

    No
    REPAIR the circuit.
      E6 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test F: DTCs B1B71:11 or 15

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    The evaporator temperature sensor receives a ground from the HVAC module. The sensor varies its resistance with the temperature. As the temperature rises, the resistance falls. As the temperature falls, the resistance rises. The HVAC module measures this resistance to determine the temperature at the sensor.

    The evaporator temperature sensor is used for A/C compressor cycling. An accurate evaporator temperature is critical to prevent evaporator icing. The HVAC module uses the temperature measurement to turn off the A/C compressor before the evaporator temperatures are cold enough to freeze the condensation. This prevents ice blockage of airflow over the evaporator core.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1B71:11 Evaporator Temperature Sensor: Circuit Short to Ground This CMDTC and on demand DTC sets when the HVAC module senses lower than expected voltage on the sensor feedback circuit, indicating a short to ground.
    B1B71:15 Evaporator Temperature Sensor: Circuit Short to Battery or Open This CMDTC and on demand DTC sets when the HVAC module senses greater than expected voltage on the sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.

     
    PINPOINT TEST F: DTCs B1B71:11 OR 15
    Test Step Result / Action to Take
      F1 CHECK THE EVAPORATOR TEMPERATURE SENSOR RESISTANCE  
    • Ignition OFF.
    • Disconnect: Evaporator Temperature Sensor.
    • Carry out the Evaporator Temperature Sensor component test in this section.
    • Does the evaporator temperature sensor test OK?
    		Yes
    GO to F2 .

    No
    INSTALL a new evaporator temperature sensor (part of 19850). REFER to Section 412-01 , Heater Core And Evaporator Core Housing procedure.
      F2 CHECK THE HVAC MODULE OUTPUT VOLTAGE  
    • Ignition ON.
    • Press the POWER button on the HVAC controls.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C296-1 VH406 (VT/BN) C296-2 RH111 (GY/BU)



    • Is the voltage between 4.7 and 5.1 volts?
    		Yes
    INSTALL a new evaporator temperature sensor (part of 19850). REFER to Section 412-01 , Heater Core And Evaporator Core Housing procedure. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. If the DTC returns, GO to F8 .

    No
    For DTC B1B71:11 , GO to F6 .

    For DTC B1B71:15 , GO to F3 .
      F3 CHECK THE EVAPORATOR TEMPERATURE SENSOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Ignition ON.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-19 VH406 (VT/BN) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-19 VH406 (VT/BN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to F4 .
      F4 CHECK THE EVAPORATOR TEMPERATURE SENSOR FEEDBACK CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-19 VH406 (VT/BN) C296-1 VH406 (VT/BN)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-19 VH406 (VT/BN) C296-1 VH406 (VT/BN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to F5 .

    No
    REPAIR the circuit.
      F5 CHECK THE SIGNAL RETURN CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C296-2 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C296-2 RH111 (GY/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to F8 .

    No
    REPAIR the circuit.
      F6 CHECK THE EVAPORATOR TEMPERATURE SENSOR FEEDBACK CIRCUIT FOR A SHORT TO THE SIGNAL RETURN CIRCUIT  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C296-1 VH406 (VT/BN) C296-2 RH111 (GY/BU)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to F7 .

    No
    REPAIR the circuits.
      F7 CHECK THE EVAPORATOR TEMPERATURE SENSOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C296-1 VH406 (VT/BN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to F8 .

    No
    REPAIR the circuit.
      F8 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test G: DTCs U3003:16 or 17

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    NOTE: DTC U3003 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: Carry out a thorough inspection and verification before proceeding with the pinpoint test. Refer to Inspection and Verification in this section.

    Normal Operation and Fault Conditions

    The HVAC module is supplied constant battery voltage and ground.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    U3003:16 Battery Voltage: Circuit Voltage Below Threshold This CMDTC sets when the HVAC module senses battery voltage is less than 8 volts for more than 10 seconds.
    U3003:17 Battery Voltage: Circuit Voltage Above Threshold This CMDTC sets when the HVAC module senses battery voltage is greater than 16 volts for more than 10 seconds.

     
    PINPOINT TEST G: DTCs U3003:16 OR 17
    Test Step Result / Action to Take
      G1 RETRIEVE PCM DTCs  
    • Start the engine.
    • Enter the following diagnostic mode on the scan tool: Self-Test — PCM.
    • Are any charging system DTCs present in the PCM?
    		Yes
    REFER to Section 414-00 for diagnosis of the battery and charging system.

    No
    GO to G2 .
      G2 CHECK BATTERY CONDITION  
    • Ignition OFF.
    • Carry out the Battery Condition Test. Refer to Section 414-01 .
    • Does the battery pass the condition test?
    		Yes
    GO to G3 .

    No
    INSTALL a new battery. REFER to Section 414-01 .
      G3 CHECK THE CHARGING SYSTEM VOLTAGE  

      NOTE: Do not allow the engine rpm to exceed 2,000 rpm while carrying out this step or the generator may self-excite, resulting in default charging system output voltage. If engine rpm has exceeded 2,000 rpm, shut the vehicle off and restart the engine before carrying out this step.

    • Start the engine.
    • Measure the voltage of the battery:
      • For DTC U3003:17 , turn off all accessories and run the engine at 1,500 rpm for a minimum of 2 minutes.
      • For DTC U3003:16 , turn the headlights on and the HVAC fan on high and run engine at 1,500 rpm for a minimum of 2 minutes.


    • Is the battery voltage between 13-15.2 volts?
    		Yes
    For DTC U3003:16 , GO to G4 .

    For DTC U3003:17 , GO to G6 .

    No
    REFER to Section 414-00 to diagnose the charging system.
      G4 CHECK THE HVAC MODULE VOLTAGE SUPPLY CIRCUIT FOR HIGH RESISTANCE  
    • Ignition OFF.
    • Measure and record the voltage at the battery.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Ignition ON.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-26 SBP46 (BN/RD) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 SBP46 (BN/RD) — Ground



    • Is the voltage within 0.2 volt of the recorded battery voltage?
    		Yes
    GO to G5 .

    No
    REPAIR the circuit.
      G5 CHECK THE HVAC MODULE GROUND CIRCUIT FOR HIGH RESISTANCE  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-10 GD374 (BK/WH) — Ground



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-10 GD374 (BK/WH) — Ground



    • Is the resistance less than 3 ohms?
    		Yes
    GO to G6 .

    No
    REPAIR the circuit.
      G6 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test H: Unable to Duplicate the Customer Concern and No DTCs Present

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Normal Operation and Fault Conditions

    This pinpoint test tests the functions of the HVAC system and identifies the correct HVAC symptom pinpoint test.

     
    PINPOINT TEST H: UNABLE TO DUPLICATE THE CUSTOMER CONCERN AND NO DTCs PRESENT
    Test Step Result / Action to Take
      H1 CHECK THE BLOWER MOTOR OPERATION  
    • Ignition ON.
    • Select PANEL mode.
    • Observe blower motor operation and select each blower motor speed.
    • Does the blower motor operate in all selections and change speed in each?
    		Yes
    GO to H2 .

    No
    If the blower motor does not operate in any setting, GO to Pinpoint Test Q .

    If the blower motor does not properly change speeds or shut off, GO to Pinpoint Test R .
      H2 CHECK AIRFLOW OPERATION  
    • Select the highest blower motor setting.
    • NOTE: Refer to Description and Operation in this section for correct airflow descriptions.
    • While observing the airflow, select each of the airflow positions (PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST, DEFROST).
    • Is the airflow directed to the correct outlets?
    		Yes
    GO to H3 .

    No
    GO to Pinpoint Test J .
      H3 VERIFY TEMPERATURE CONTROL OPERATION  
    • Start the vehicle and allow it to reach normal operating temperature.
    • With the A/C off, select PANEL mode.
    • Change the temperature setting from the coldest to the warmest and back to the coldest.
    • Does the temperature change between very warm to cool?
    		Yes
    GO to H4 .

    No
    If the temperature does not get very warm, GO to Pinpoint Test K .

    For EMTC systems , If the temperature does not change at all, GO to Pinpoint Test O .

    For DATC systems , if the LH temperature does not change at all, GO to Pinpoint Test O .

    For DATC systems , if the RH temperature does not change at all, GO to Pinpoint Test P .
      H4 VERIFY THE A/C CLUTCH DOES NOT ENGAGE WITH A/C OFF  
    • With the engine running and the A/C off, select PANEL mode.
    • Select the coldest temperature setting.
    • Is the outlet temperature close to ambient temperature?
    		Yes
    GO to H5 .

    No
    For EMTC systems , if the temperature is warmer than ambient temperature, GO to Pinpoint Test O and DIAGNOSE for inoperative blend door.

    For DATC systems , if the LH temperature is warmer than ambient temperature, GO to Pinpoint Test O and DIAGNOSE for inoperative blend door.

    For DATC systems , if the RH temperature is warmer than ambient temperature, GO to Pinpoint Test P and DIAGNOSE for inoperative blend door.

    If the outlet temperature is significantly colder than ambient temperature and the A/C compressor clutch cycles normally, GO to Pinpoint Test N .

    If the outlet temperature is significantly colder than ambient temperature and the A/C compressor clutch is engaged and does not cycle, GO to Pinpoint Test M .
      H5 VERIFY A/C CLUTCH ENGAGEMENT IN THE A/C MODE  
    • Make sure the ambient air temperature is above 2°C (36°F).
    • With the engine running, select PANEL mode.
    • Press the A/C button (indicator on).
    • Does the A/C clutch engage when the PANEL and A/C button (indicator on) is pressed?
    		Yes
    GO to H6 .

    No
    GO to Pinpoint Test L .
      H6 CHECK THE RECIRC OPERATION  
    • With the engine running, press the RECIRC button (indicator off).
    • Select PANEL mode.
    • Select the highest blower motor setting.
    • Observe airflow noise.
    • Press the RECIRC button (indicator on).
    • Does the airflow noise increase when the RECIRC mode is selected (indicator on)?
    		Yes
    GO to H7 .

    No
    GO to Pinpoint Test I .
      H7 CHECK THE AUXILIARY BLOWER MOTOR OPERATION  
    • Using the front and rear auxiliary blower motor controls, observe blower motor operation and select each auxiliary blower motor speed.
    • Does the auxiliary blower motor operate in all selections and change speed in each?
    		Yes
    GO to H8 .

    No
    If the auxiliary blower motor does not operate in any setting, GO to Pinpoint Test S .

    If the auxiliary blower motor does not properly change speeds or shut OFF using both the front and rear auxiliary controls, GO to Pinpoint Test T .

    If the auxiliary blower motor does not properly change speeds or shut OFF using the rear auxiliary controls only, GO to Pinpoint Test W .
      H8 VERIFY AUXILIARY TEMPERATURE/MODE OPERATION  
    • Select the highest auxiliary blower motor setting.
    • Using the front and rear auxiliary controls, change the temperature/mode setting from the coldest to the warmest/floor and back to the coldest/overhead.
    • Does the temperature change between very warm to cool and auxiliary airflow to the floor when warm is selected and headliner when cool is selected?
    		Yes
    For vehicles equipped with touchscreen controls, GO to H9 .

    For vehicles not equipped with touchscreen controls, the system is operating normally.

    No
    If the auxiliary temperature control is inoperative/does not operate correctly from the front/rear auxiliary controls, GO to Pinpoint Test U .

    If the auxiliary temperature control is inoperative/does not operate correctly from the front auxiliary controls only, INSTALL a new HVAC module. REFER To Section 412-01 .

    If the auxiliary temperature control is inoperative/does not operate correctly from the rear auxiliary controls only, GO to Pinpoint Test W .

    If the auxiliary panel/floor control is inoperative/does not operate correctly from the front/rear auxiliary controls, GO to Pinpoint Test V .

    If the auxiliary panel/floor control is inoperative/does not operate correctly from the front auxiliary controls only, INSTALL a new HVAC module. REFER to Section 412-01 .

    If the auxiliary panel/floor control is inoperative/does not operate correctly from the rear auxiliary controls only, GO to Pinpoint Test W .
      H9 CHECK THE TOUCHSCREEN CONTROLS OPERATION  
    • Select each climate control function using the touchscreen controls.
    • Select each audio control function using the touchscreen controls.
    • Do all touchscreen controls operate?
    		Yes
    The system is operating normally.

    No
    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.
     

    Pinpoint Test I: The Air Inlet Door is Inoperative

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    To rotate the air inlet mode door actuator, the HVAC module supplies voltage and ground to the air inlet mode door actuator through the door actuator motor circuits. To reverse the air inlet mode door actuator rotation, the HVAC module reverses the voltage and ground circuits. The air inlet mode door actuator feedback resistors are supplied a ground from the HVAC module by the air inlet mode door actuator return circuits and a 5-volt reference voltage on the air inlet mode door actuator reference circuits. The HVAC module reads the voltage on the air inlet mode door actuator feedback circuits to determine the air inlet mode door actuator position by the position of the actuator feedback resistor wiper arm.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1083:11 Recirculation Damper Motor: Circuit Short to Ground This CMDTC and on demand DTC sets when the HVAC module senses lower than expected voltage on an actuator motor circuit when voltage is applied to drive the motor, indicating a short to ground.
    B1083:12 Recirculation Damper Motor: Circuit Short to Battery This CMDTC and on demand DTC sets when the HVAC module senses higher than expected voltage on the actuator motor circuit when ground is applied to drive the motor, indicating a short to voltage.
    B1083:13 Recirculation Damper Motor: Circuit Open This CMDTC and on demand DTC sets when the HVAC module senses no voltage on the actuator motor circuit when ground is applied to drive the motor, indicating an open circuit.
    B11F0:11 Air Intake Damper Position Sensor: Circuit Short to Ground This CMDTC and on demand DTC sets when the HVAC module senses less than 1 volt on the actuator feedback circuit, indicating a short to ground.
    B11F0:15 Air Intake Damper Position Sensor: Circuit Short to Battery or Open This CMDTC and on demand DTC sets when the HVAC module senses greater than 4 volts on the actuator feedback circuit, indicating an open circuit or a short to voltage.

     
    PINPOINT TEST I: THE AIR INLET DOOR IS INOPERATIVE

    NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.

    Test Step Result / Action to Take
      I1 CHECK THE HVAC MODULE FOR DTCs  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Are any DTCs present?
    		Yes
    For DTC B1083:11 , GO to I3 .

    For DTC B1083:12 , GO to I4 .

    For DTC B1083:13 , GO to I6 .

    For DTC B11F0:11 , GO to I7 .

    For DTC B11F0:15 , GO to I9 .

    No
    GO to I2 .
      I2 CHECK THE AIR INLET MODE DOOR ACTUATOR OPERATION USING ACTIVE COMMANDS  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger — HVAC Module.
    • Monitor the HVAC module PID RECIRC_DPOS.
    • Select PANEL mode.
    • Select the highest blower motor setting.
    • Observe airflow noise while using the scan tool to operate the HVAC module active command RECIRC_DPOS, increasing and decreasing the percentage value.
    • Does the airflow noise change when the active command is changed?
    		Yes
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.

    No
    INSPECT for broken linkage or door. REPAIR as necessary. If no condition is found,GO to I14 .
      I3 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Air Inlet Mode Door Actuator.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-2 CH207 (BU/GY) — Ground
      C228A-3 CH208 (GN/OG) — Ground



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-2 CH207 (BU/GY) — Ground
      C2357A-3 CH208 (GN/OG) — Ground



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to I5 .

    No
    REPAIR the circuit in question.
      I4 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Ignition ON.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-2 CH207 (BU/GY) — Ground
      C228A-3 CH208 (GN/OG) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-2 CH207 (BU/GY) — Ground
      C2357A-3 CH208 (GN/OG) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit in question.

    No
    GO to I5 .
      I5 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-2 CH207 (BU/GY) C228A-3 CH208 (GN/OG)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-2 CH207 (BU/GY) C2357A-3 CH208 (GN/OG)



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to I14 .

    No
    REPAIR the circuits.
      I6 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Air Inlet Mode Door Actuator.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-2 CH207 (BU/GY) C289-5 CH207 (BU/GY)
      C228A-3 CH208 (GN/OG) C289-6 CH208 (GN/OG)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-2 CH207 (BU/GY) C289-5 CH207 (BU/GY)
      C2357A-3 CH208 (GN/OG) C289-6 CH208 (GN/OG)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to I14 .

    No
    REPAIR the circuit in question.
      I7 CHECK THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Air Inlet Mode Door Actuator.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-16 VH438 (GN/VT) — Ground



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-16 VH438 (GN/VT) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to I8 .

    No
    REPAIR the circuit.
      I8 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C228A-16 VH438 (GN/VT)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C2357A-16 VH438 (GN/VT)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to I14 .

    No
    REPAIR the circuits.
      I9 CHECK THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Air Inlet Mode Door Actuator.
    • Ignition ON.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-16 VH438 (GN/VT) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-16 VH438 (GN/VT) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to I10 .
      I10 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C289-1 LH111 (BN/WH)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C289-1 LH111 (BN/WH)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to I11 .

    No
    REPAIR the circuit.
      I11 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C228A-16 VH438 (GN/VT)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C2357A-16 VH438 (GN/VT)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to I12 .

    No
    REPAIR the circuits.
      I12 CHECK THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-16 VH438 (GN/VT) C289-2 VH438 (GN/VT)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-16 VH438 (GN/VT) C289-2 VH438 (GN/VT)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to I13 .

    No
    REPAIR the circuit.
      I13 CHECK THE AIR INLET MODE DOOR ACTUATOR RETURN CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C289-3 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C289-3 RH111 (GY/BU)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to I14 .

    No
    REPAIR the circuit.
      I14 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect the air inlet mode door actuator connector.
    • 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
    • Reconnect the air inlet mode door actuator connector. Make sure it seats and latches correctly.
    • Clear the DTCs.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    INSTALL a new air inlet mode door actuator. REFER to Section 412-01 . TEST the system for normal operation. If the concern is still present, GO to I15 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      I15 MODULE ACTUATOR POSITION CALIBRATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • Ignition ON.
    • Clear the DTCs.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Select any position except OFF.
    • NOTE: The HVAC module initializes and calibrates the actuators. Calibration of the actuators takes approximately 30 seconds.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test J: Incorrect/Erratic Direction of Airflow From Outlets

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    To rotate the defrost/panel/floor mode door actuator, the HVAC module supplies voltage and ground to the defrost/panel/floor mode door actuator motor through the actuator motor circuits. To reverse the defrost/panel/floor mode door actuator rotation, the HVAC module reverses the voltage and ground circuits.

    The defrost/panel/floor mode door actuator feedback resistor is supplied a 5-volt reference voltage and ground from the HVAC module. The HVAC module measures the resistance on the defrost/panel/floor mode door actuator feedback circuit to determine the defrost/panel/floor mode door actuator position by the position of the actuator feedback resistor wiper arm.

    During an actuator calibration cycle, the HVAC module drives the defrost/panel/floor mode door until the door reaches both internal stops in the HVAC case. If the defrost/panel/floor mode door is temporarily obstructed or binding during a calibration cycle, the HVAC module may interpret this as the actual end of travel for the door. When this condition occurs and the HVAC module commands the actuator to its end of travel, the airflow may not be from the expected outlets.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1086:11 Air Distribution Damper Motor: Circuit Short to Ground This CMDTC sets when the HVAC module senses lower than expected voltage on an actuator motor circuit when voltage is applied to drive the motor, indicating a short to ground.
    B1086:12 Air Distribution Damper Motor: Circuit Short to Battery This CMDTC sets when the HVAC module senses greater than expected voltage on the actuator motor circuit when ground is applied to drive the motor, indicating a short to voltage.
    B1086:13 Air Distribution Damper Motor: Circuit Open This CMDTC sets when the HVAC module senses no voltage on the actuator motor circuit when ground is applied to drive the motor, indicating an open circuit.
    B11E7:11 Air Distribution Damper Position Sensor: Circuit Short to Ground This CMDTC sets when the HVAC module senses less than 1 volt on the actuator feedback circuit, indicating a short to ground.
    B11E7:15 Air Distribution Damper Position Sensor: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses greater than 4 volts on the actuator feedback circuit, indicating an open circuit or a short to voltage.

     
    PINPOINT TEST J: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS

    NOTE: Access to the defrost/panel/floor mode door actuator motor connector in this pinpoint test is difficult. Before disconnecting the defrost/panel/floor mode door actuator motor connector, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.

    Test Step Result / Action to Take
      J1 CHECK THE HVAC MODULE FOR DTCs  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Check the HVAC module for DTCs.
    • Are any DTCs present?
    		Yes
    For DTC B1086:11 , GO to J3 .

    For DTC B1086:12 , GO to J4 .

    For DTC B1086:13 , GO to J6 .

    For DTC B11E7:11 , GO to J7 .

    For DTC B11E7:15 , GO to J9 .

    No
    GO to J2 .
      J2 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR OPERATION USING ACTIVE COMMANDS  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger — HVAC Module.
    • Select PANEL mode on the HVAC controls.
    • Select the highest blower motor setting.
    • Observe airflow while using the scan tool to operate the HVAC module active command AIR_MODE_DPOS, increasing and decreasing the percentage value.
    • Does the airflow change between the defrost, panel and floor outlets when the active command is changed?
    		Yes
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.

    No
    INSPECT for broken linkage or door. REPAIR as necessary. If no condition is found, GO to J14 .
      J3 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Defrost/Panel/Floor Mode Door Actuator.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-6 CH228 (YE/GY) — Ground
      C228A-7 CH229 (WH/BU) — Ground



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-6 CH228 (YE/GY) — Ground
      C2357A-7 CH229 (WH/BU) — Ground



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to J5 .

    No
    REPAIR the circuit in question.
      J4 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Defrost/Panel/Floor Mode Door Actuator.
    • Ignition ON.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-6 CH228 (YE/GY) — Ground
      C228A-7 CH229 (WH/BU) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-6 CH228 (YE/GY) — Ground
      C2357A-7 CH229 (WH/BU) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit in question.

    No
    GO to J5 .
      J5 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-6 CH228 (YE/GY) C228A-7 CH229 (WH/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-6 CH228 (YE/GY) C2357A-7 CH229 (WH/BU)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to J14 .

    No
    REPAIR the circuits.
      J6 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Defrost/Panel/Floor Mode Door Actuator.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-6 CH228 (YE/GY) C236-1 CH228 (YE/GY)
      C228A-7 CH229 (WH/BU) C236-6 CH229 (WH/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-6 CH228 (YE/GY) C236-1 CH228 (YE/GY)
      C2357A-7 CH229 (WH/BU) C236-6 CH229 (WH/BU)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to J14 .

    No
    REPAIR the circuit in question.
      J7 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Defrost/Panel/Floor Mode Door Actuator.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-21 VH436 (YE/VT) — Ground



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-21 VH436 (YE/VT) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to J8 .

    No
    REPAIR the circuit.
      J8 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR FEEDBACK CIRCUIT  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-21 VH436 (YE/VT) C228A-23 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-21 VH436 (YE/VT) C2357A-23 RH111 (GY/BU)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to J14 .

    No
    REPAIR the circuits.
      J9 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Defrost/Panel/Floor Mode Door Actuator.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-21 VH436 (YE/VT) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-21 VH436 (YE/VT) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to J10 .
      J10 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C236-3 LH111 (BN/WH)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C236-3 LH111 (BN/WH)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to J11 .

    No
    REPAIR the circuit.
      J11 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR FEEDBACK CIRCUIT  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-21 VH436 (YE/VT) C228A-24 LH111 (BN/WH)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-21 VH436 (YE/VT) C2357A-24 LH111 (BN/WH)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to J12 .

    No
    REPAIR the circuits.
      J12 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-21 VH436 (YE/VT) C236-4 VH436 (YE/VT)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-21 VH436 (YE/VT) C236-4 VH436 (YE/VT)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to J13 .

    No
    REPAIR the circuit.
      J13 CHECK THE DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR RETURN CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C236-2 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C236-2 RH111 (GY/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to J14 .

    No
    REPAIR the circuit.
      J14 CHECK FOR CORRECT DEFROST/PANEL/FLOOR MODE DOOR ACTUATOR OPERATION  
    • Ignition OFF.
    • Disconnect and inspect the defrost/panel/floor mode door actuator connector.
    • 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
    • Reconnect the defrost/panel/floor mode door actuator connector. Make sure it seats and latches correctly.
    • Connect all HVAC module connectors. Make sure they seat and latch correctly.
    • Clear the DTCs.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    INSTALL a new defrost/panel/floor mode door actuator. REFER to Section 412-01 . TEST the system for normal operation. If the concern is still present, GO to J15 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      J15 MODULE ACTUATOR POSITION CALIBRATION  

      NOTE: The purpose of the module actuator position calibration is to allow the HVAC module to reinitialize and calibrate the actuator stop points.

    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • Ignition ON.
    • Clear the DTCs.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Select any position except OFF.
    • NOTE: The HVAC module initializes and calibrates the actuators. Calibration of the actuators takes approximately 30 seconds.
    • 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 .

    No
    The system is now operating correctly at this time. The concern may have been caused by a foreign object in the HVAC case or temporary binding that restricted actuator door travel. CHECK any actuator external linkage. If the condition recurs, INSPECT actuator linkage and door for binding and CHECK HVAC case for foreign objects.
     

    Pinpoint Test K: Insufficient, Erratic or No Heat

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Normal Operation and Fault Conditions

    Warm coolant flows from the engine through the heater core and back to the engine. Proper coolant temperatures are critical for good heater performance.

     
    PINPOINT TEST K: INSUFFICIENT, ERRATIC OR NO HEAT
    Test Step Result / Action to Take
      K1 CHECK FOR CORRECT ENGINE COOLANT LEVEL  
    • Ignition OFF.
    • Check the engine coolant level when hot and cold.
    • Is the engine coolant at the correct level (hot/cold) as indicated on the engine coolant recovery reservoir?
    		Yes
    GO to K3 .

    No
    GO to K2 .
      K2 CHECK THE ENGINE COOLING SYSTEM FOR LEAKS  
    • Pressure test the cooling system for leaks. Refer to Section 303-03 .
    • Does the engine cooling system leak?
    		Yes
    REPAIR the engine coolant leak.

    No
    FILL and BLEED the cooling system. REFER to Section 303-03 . After filling and bleeding the cooling system, GO to K3 .
      K3 CHECK FOR COOLANT FLOW TO THE HEATER CORE  
    • Run the engine until it reaches normal operating temperature. Select the FLOOR position. Set the temperature control to full warm and the blower to the lowest setting.
    • Using a suitable temperature measuring device, check the heater core inlet hose to see if it is hot.
    • Is the heater core inlet hose temperature above 65.5°C (150°F)?
    		Yes
    GO to K4 .

    No
    REFER to Section 303-03 to check cooling system function.
      K4 CHECK FOR A PLUGGED OR RESTRICTED HEATER CORE  
    • Using a suitable temperature measuring device, measure the heater core outlet hose temperature.
    • Is the heater core outlet hose temperature similar to the inlet hose temperature (within approximately 6-17°C [10-30°F])?
    		Yes
    For EMTC systems , GO to Pinpoint Test O and DIAGNOSE for inoperative blend door.

    For DATC systems , if the LH temperature is not hot, GO to Pinpoint Test O and DIAGNOSE for inoperative LH blend door.

    For DATC systems , if the RH temperature is not hot, GO to Pinpoint Test P and DIAGNOSE for inoperative RH blend door.

    No
    INSTALL a new heater core. REFER to Section 412-01 .
     

    Pinpoint Test L: The Air Conditioning (A/C) is Inoperative

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    When the A/C is requested, the FCIM sends the button press message over the I-CAN to the IPC . The IPC sends the button press message to the BCM over the HS-CAN . The BCM sends the button press message to the HVAC module over the MS-CAN . The HVAC module sends an A/C request message through the MS-CAN to the BCM and the BCM sends the A/C request through the HS-CAN to the PCM.

    Voltage is provided to the A/C clutch relay coil and switch contacts. When A/C is requested and A/C line pressures allow, a ground is provided to the A/C clutch relay coil from the PCM, energizing the A/C clutch relay. When the PCM energizes the relay, voltage is supplied to the A/C compressor clutch field coil from the relay. Ground is supplied for the A/C compressor clutch field coil.

    The evaporator temperature sensor is used for A/C compressor cycling. An accurate evaporator temperature is critical for compressor engagement. The PCM uses the temperature measurement to turn the A/C compressor off before the evaporator temperatures are cold enough to freeze the condensation on the evaporator core.

    When an A/C request is received by the PCM, the A/C compressor clutch only engages through the A/C clutch relay if all of the following conditions are met:

     
    PINPOINT TEST L: THE AIR CONDITIONING (A/C) IS INOPERATIVE
    Test Step Result / Action to Take
      L1 CHECK THE A/C SYSTEM PRESSURE  
    • Ignition OFF.
    • With the R-134a manifold gauge set connected, check the A/C system pressure.
    • Is the A/C system pressure above 290 kPa (42 psi) ?
    		Yes
    GO to L2 .

    No
    CHECK the A/C system for leaks. REFER to Fluorescent Dye Leak Detection or Electronic Leak Detection in this section. RECHARGE the A/C system. REFER to Air Conditioning (A/C) System Recovery, Evacuation and Charging .
      L2 CHECK THE A/C PRESSURE SENSOR (ACP_PRESS) PID  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger — PCM.
    • With the R-134a manifold gauge set connected, compare the pressure readings of the manifold gauge set and the ACP_PRESS PCM PID.
    • Are the pressure values of the manifold gauge set and the ACP_PRESS PCM PID similar?
    		Yes
    GO to L3 .

    No
    INSTALL a new A/C pressure transducer.
      L3 CHECK THE A/C EVAPORATOR TEMPERATURE (EVAP_TEMP) PID  
    • Allow the vehicle exterior and interior to stabilize to the ambient temperature.
    • Enter the following diagnostic mode on the scan tool: DataLogger — HVAC Module.
    • Monitor the EVAP_TEMP HVAC module PID
    • Does the PID read similar to the ambient temperature?
    		Yes
    GO to L4 .

    No
    INSTALL a new evaporator temperature sensor (part of 19850). REFER to Section 412-01 , Heater Core And Evaporator Core Housing procedure.
      L4 CHECK THE (A/C) SWITCH (CC_SW_AC) PID WITH THE A/C ON  
    • Enter the following diagnostic mode on the scan tool: DataLogger — FCIM .
    • Monitor the CC_SW_AC FCIM PID
    • Select PANEL, press the A/C button (indicator on) on the HVAC controls.
    • Does the PID read Active when the button is pressed?
    		Yes
    GO to L5 .

    No
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.
      L5 CHECK THE AIR CONDITIONING REQUEST SIGNAL (AC_REQ) PID WITH THE A/C ON  
    • Enter the following diagnostic mode on the scan tool: DataLogger — PCM.
    • Select PANEL, press the A/C button (indicator on) on the HVAC controls.
    • Monitor the AC_REQ PCM PID
    • Does the PID read ON when the button is pressed?
    		Yes
    GO to L6 .

    No
    GO to L12 .
      L6 CHECK THE AIR CONDITIONING COMPRESSOR COMMANDED STATE (ACC_CMD) PID WITH THE A/C ON  
    • Start the engine.
    • Enter the following diagnostic mode on the scan tool: DataLogger — PCM.
    • Turn the A/C compressor on using the PCM PID ACC_CMD.
    • Does the A/C compressor turn on?
    		Yes
    GO to L13 .

    No
    GO to L7 .
      L7 CHECK THE VOLTAGE TO THE A/C CLUTCH RELAY  
    • Ignition OFF.
    • Disconnect: A/C Clutch Relay.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-3 SBB62 (BN/RD) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to L8 .

    No
    VERIFY BJB fuse 62 (10A) 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.
      L8 BYPASS THE A/C CLUTCH RELAY  
    • Start the engine.
    • Connect a fused jumper wire between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-3 SBB62 (BN/RD) A/C Clutch Relay Socket-5 CH401 (VT/WH)



    • Does the A/C compressor clutch engage?
    		Yes
    REMOVE the jumper wire. INSTALL a new A/C clutch relay.

    No
    LEAVE the jumper wire installed. GO to L9 .
      L9 CHECK THE A/C COMPRESSOR CLUTCH FIELD COIL VOLTAGE SUPPLY CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: A/C Compressor Clutch Field Coil.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C100-1 CH401 (VT) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    REMOVE the jumper wire. GO to L10 .

    No
    REMOVE the jumper wire. REPAIR the circuit.
      L10 CHECK THE A/C COMPRESSOR CLUTCH FIELD COIL GROUND CIRCUIT FOR AN OPEN  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C100-2 GD120 (BK) — Ground



    • Is the resistance less than 3 ohms?
    		Yes
    GO to L11 .

    No
    REPAIR the circuit.
      L11 CHECK THE A/C COMPRESSOR CLUTCH AIR GAP  
    • Measure the A/C compressor clutch air gap at 3 equally spaced locations between the clutch hub and the A/C compressor clutch pulley.


    • Is the A/C compressor clutch air gap greater than 0.6 mm (0.0236 in)?
    		Yes
    ADJUST the A/C compressor clutch air gap. REFER to Air Conditioning (A/C) Clutch Air Gap Adjustment .

    No
    INSTALL a new A/C compressor. REFER to Section 412-01 .
      L12 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      L13 CHECK FOR CORRECT PCM OPERATION  
    • Disconnect and inspect all the PCM 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 all PCM connectors. Make sure they seat and latch correctly.
    • Operate the system and verify 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 PCM. REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test M: The Air Conditioning (A/C) is Always On — A/C Compressor Does Not Cycle

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    When the A/C is requested, the FCIM sends the button press message over the I-CAN to the IPC . The IPC sends the button press message to the BCM over the HS-CAN . The BCM sends the button press message to the HVAC module over the MS-CAN . The HVAC module sends an A/C request message through the MS-CAN to the BCM and the BCM sends the A/C request through the HS-CAN to the PCM.

    Voltage is provided to the A/C clutch relay coil and switch contacts. When A/C is requested and A/C line pressures allow, a ground is provided to the A/C clutch relay coil from the PCM, energizing the A/C clutch relay. When the PCM energizes the relay, voltage is supplied to the A/C compressor clutch field coil from the relay. Ground is supplied for the A/C compressor clutch field coil.

    The evaporator temperature sensor is used for A/C compressor cycling. An accurate evaporator temperature is critical for compressor engagement. The PCM uses the temperature measurement to turn the A/C compressor off before the evaporator temperatures are cold enough to freeze the condensation on the evaporator core.

     
    PINPOINT TEST M: THE AIR CONDITIONING (A/C) IS ALWAYS ON — A/C COMPRESSOR DOES NOT CYCLE
    Test Step Result / Action to Take
      M1 CHECK THE PCM FOR DTCs  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — PCM.
    • Is DTC P0645 present?
    		Yes
    REFER to GO to Pinpoint Test B .

    No
    GO to M2 .
      M2 CHECK FOR A/C CLUTCH OPERATION WITH THE A/C CLUTCH RELAY DISCONNECTED  
    • Ignition OFF.
    • Disconnect: A/C Clutch Relay.
    • Start the engine.
    • With the engine running, observe the A/C compressor clutch.
    • Is the A/C compressor on?
    		Yes
    GO to M3 .

    No
    GO to M5 .
      M3 CHECK THE POWER CIRCUIT TO THE A/C COMPRESSOR CLUTCH FOR A SHORT TO POWER  
    • Ignition OFF.
    • Disconnect: A/C Clutch Field Coil.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      A/C Clutch Relay Socket-5 CH401 (VT/WH) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to M4 .
      M4 CHECK THE A/C COMPRESSOR CLUTCH AIR GAP  
    • Ignition OFF.
    • Measure the A/C compressor clutch air gap at 3 equally spaced locations between the clutch hub and the A/C compressor clutch pulley.


    • Is the A/C compressor clutch air gap less than 0.35 mm (0.0138 in)?
    		Yes
    ADJUST the A/C compressor clutch air gap. REFER to Air Conditioning (A/C) Clutch Air Gap Adjustment .

    No
    INSTALL a new A/C compressor. REFER to Section 412-01 .
      M5 CHECK THE A/C CLUTCH RELAY FUNCTIONALITY  
    • Using a known good A/C clutch relay, check the A/C compressor clutch for correct operation.
    • Is the A/C compressor on?
    		Yes
    INSTALL a new A/C clutch relay.

    No
    GO to M6 .
      M6 CHECK FOR CORRECT PCM OPERATION  
    • Disconnect and inspect all the PCM 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 all PCM connectors. Make sure they seat and latch correctly.
    • Operate the system and verify 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 PCM. REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test N: The Air Conditioning (A/C) is Always On — A/C Mode Always Commanded ON

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    When the A/C is requested, the FCIM sends the button press message over the I-CAN to the IPC . The IPC then sends the button press message to the BCM over the HS-CAN . The BCM sends the button press message to the HVAC module over the MS-CAN . The HVAC module sends an A/C request message through the MS-CAN to the BCM and the BCM sends the A/C request through the HS-CAN to the PCM.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    P1464 A/C Demand Out Of Self Test Range: No Sub Type Information This DTC sets when the PCM senses an A/C request during a PCM self-test.

     
    PINPOINT TEST N: THE AIR CONDITIONING (A/C) IS ALWAYS ON — A/C MODE ALWAYS COMMANDED ON
    Test Step Result / Action to Take
      N1 CHECK THE A/C SWITCH STATUS (CC_SW_AC) PID WITH THE A/C OFF  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger — FCIM .
    • Monitor the CC_SW_AC FCIM PID
    • Select PANEL, press and release the A/C button (indicator off) on the HVAC controls.
    • Does the PID read Active when pressed and Inactive when released?
    		Yes
    GO to N2 .

    No
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.
      N2 CHECK THE AIR CONDITIONING REQUEST SIGNAL (AC_REQ) PID WITH THE A/C OFF  
    • Enter the following diagnostic mode on the scan tool: DataLogger — PCM.
    • Deactivate the A/C using the HVAC controls.
    • Monitor the AC_REQ PCM PID
    • Does the PID read OFF?
    		Yes
    GO to N4 .

    No
    GO to N3 .
      N3 CHECK THE AIR CONDITIONING REQUEST SIGNAL (AC_REQ) PID WITH HVAC MODULE DISCONNECTED  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger — PCM.
    • Monitor the AC_REQ PCM PID
    • Does the AC_REQ PCM PID read OFF?
    		Yes
    GO to N4 .

    No
    GO to N5 .
      N4 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      N5 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all PCM 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 all PCM connectors. Make sure they seat and latch correctly.
    • 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 PCM. REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test O: Temperature Control is Inoperative/Does Not Operate Correctly — LH

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    To rotate the temperature blend door actuator, the HVAC module supplies voltage and ground to the temperature blend door actuator through the door actuator motor circuits. To reverse the temperature blend door actuator rotation, the HVAC module reverses the voltage and ground circuits.

    The temperature blend door actuator feedback resistors are supplied a ground from the HVAC module by the temperature blend door actuator return circuits and a 5-volt reference voltage on the temperature blend door actuator reference circuits. The HVAC module reads the voltage on the temperature blend door actuator feedback circuits to determine the temperature blend door actuator position by the position of the actuator feedback resistor wiper arm.

    During an actuator calibration cycle, the HVAC module drives the temperature blend door until the door reaches both internal stops in the HVAC case. If the temperature blend door is temporarily obstructed or binding during a calibration cycle, the HVAC module may interpret this as the actual end of travel for the door. When this condition occurs and the HVAC module commands the actuator to its end of travel, the airflow may not be the expected temperature.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1081:11 Left Temperature Damper Motor: Circuit Short to Ground This CMDTC sets when the HVAC module senses lower the expected voltage on an actuator motor circuit when voltage is applied to drive the motor, indicating a short to ground.
    B1081:12 Left Temperature Damper Motor: Circuit Short to Battery This CMDTC sets when the HVAC module senses higher than expected voltage on the actuator motor circuit when ground is applied to drive the motor, indicating a short to voltage.
    B1081:13 Left Temperature Damper Motor: Circuit Open This CMDTC sets when the HVAC module senses no voltage on the actuator motor circuit when ground is applied to drive the motor, indicating an open circuit.
    B11E5:11 Left HVAC Damper Position Sensor: Circuit Short to Ground This CMDTC sets when the HVAC module senses less than 1 volt on the actuator feedback circuit, indicating a short to ground.
    B11E5:15 Left HVAC Damper Position Sensor: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses greater than 4 volts on the actuator feedback circuit, indicating an open circuit or a short to voltage.

     
    PINPOINT TEST O: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — LH
    Test Step Result / Action to Take
      O1 CHECK THE HVAC MODULE FOR DTCs  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Are any DTCs present?
    		Yes
    For DTC B1081:11, GO to O3 .

    For DTC B1081:12, GO to O4 .

    For DTC B1081:13, GO to O5 .

    For DTC B11E5:11, GO to O7 .

    For DTC B11E5:15, GO to O9 .

    No
    GO to O2 .
      O2 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR OPERATION USING ACTIVE COMMANDS  
    • Start the engine.
    • Run the engine until it reaches normal operating temperature.
    • Enter the following diagnostic mode on the scan tool: DataLogger — HVAC Module.
    • Select panel mode on the HVAC controls.
    • Select the highest blower motor setting.
    • Monitor airflow while using the scan tool to operate the HVAC module active command LEFT_BLEND, increasing and decreasing the percentage value.
    • Does the airflow temperature change between warm and cold when the active command is changed?
    		Yes
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.

    No
    INSPECT for broken linkage or door. REPAIR as necessary. If no condition is found, GO to O14 .
      O3 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: LH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2091-5 CH238 (YE/OG) — Ground
      C2091-6 CH239 (BU/WH) — Ground



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to O6 .

    No
    REPAIR the circuit in question.
      O4 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: LH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2091-5 CH238 (YE/OG) — Ground
      C2091-6 CH239 (BU/WH) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit in question.

    No
    GO to O6 .
      O5 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: LH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-8 CH238 (YE/OG) C2091-5 CH238 (YE/OG)
      C228A-9 CH239 (BU/WH) C2091-6 CH239 (BU/WH)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-8 CH238 (YE/OG) C2091-5 CH238 (YE/OG)
      C2357A-9 CH239 (BU/WH) C2091-6 CH239 (BU/WH)

    • Are the resistances less than 3 ohms?
    		Yes
    GO to O14 .

    No
    REPAIR the circuit in question.
      O6 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER  
    • Ignition OFF.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2091-5 CH238 (YE/OG) C2091-6 CH239 (BU/WH)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to O14 .

    No
    REPAIR the circuit.
      O7 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: LH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2091-2 VH440 (BU/BN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to O8 .

    No
    REPAIR the circuit.
      O8 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO THE LH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2091-3 RH111 (GY/BU) C2091-2 VH440 (BU/BN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to O14 .

    No
    REPAIR the circuits.
      O9 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: LH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2091-2 VH440 (BU/BN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuits.

    No
    GO to O10 .
      O10 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C2091-1 LH111 (BN/WH)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C2091-1 LH111 (BN/WH)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to O11 .

    No
    REPAIR the circuit.
      O11 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO THE LH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT  
    • Ignition OFF.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2091-1 LH111 (BN/WH) C2091-2 VH440 (BU/BN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to O12 .

    No
    REPAIR the circuits.
      O12 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-20 VH440 (BU/BN) C2091-2 VH440 (BU/BN)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-20 VH440 (BU/BN) C2091-2 VH440 (BU/BN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to O13 .

    No
    REPAIR the circuit.
      O13 CHECK THE LH TEMPERATURE BLEND DOOR ACTUATOR SIGNAL RETURN CIRCUIT FOR AN OPEN  
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C2091-3 RH111 (GY/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C2091-3 RH111 (GY/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to O14 .

    No
    REPAIR the circuit.
      O14 CHECK FOR CORRECT LH TEMPERATURE BLEND DOOR ACTUATOR OPERATION  
    • Disconnect and inspect the temperature blend door actuator connector.
    • 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
    • Reconnect the temperature blend door actuator connector. Make sure it seats and latches correctly.
    • Connect all HVAC module connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    INSTALL a new LH temperature blend door actuator, REFER to Section 412-01 Temperature Blend Door Actuator - LH. TEST the system for normal operation. If the concern is still present, GO to O15 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      O15 MODULE ACTUATOR POSITION CALIBRATION  

      NOTE: The purpose of the module actuator position calibration is to allow the HVAC module to reinitialize and calibrate the actuator stop points.

    • Ignition OFF.
    • Disconnect and inspect all 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
    • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
    • Clear the DTCs.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Select any position except OFF.
    • NOTE: The HVAC module initializes and calibrates the actuators. Calibration of the actuators takes approximately 30 seconds.
    • Operate the system and verify 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 .

    No
    The system is now operating correctly at this time. The concern may have been caused by a foreign object in the HVAC case or temporary binding that restricted actuator door travel. CHECK any actuator external linkage. If condition recurs, INSPECT actuator linkage and door for binding and CHECK HVAC case for foreign objects.
     

    Pinpoint Test P: Temperature Control is Inoperative/Does Not Operate Correctly — RH

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    To rotate the temperature blend door actuator, the HVAC module supplies voltage and ground to the temperature blend door actuator through the door actuator motor circuits. To reverse the temperature blend door actuator rotation, the HVAC module reverses the voltage and ground circuits.

    The temperature blend door actuator feedback resistors are supplied a ground from the HVAC module by the temperature blend door actuator return circuits and a 5-volt reference voltage on the temperature blend door actuator reference circuits. The HVAC module reads the voltage on the temperature blend door actuator feedback circuits to determine the temperature blend door actuator position by the position of the actuator feedback resistor wiper arm.

    During an actuator calibration cycle, the HVAC module drives the temperature blend door until the door reaches both internal stops in the HVAC case. If the temperature blend door is temporarily obstructed or binding during a calibration cycle, the HVAC module may interpret this as the actual end of travel for the door. When this condition occurs and the HVAC module commands the actuator to its end of travel, the airflow may not be the expected temperature.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1082:11 Right Temperature Damper Motor: Circuit Short to Ground This CMDTC sets when the HVAC module senses lower the expected voltage on an actuator motor circuit when voltage is applied to drive the motor, indicating a short to ground.
    B1082:12 Right Temperature Damper Motor: Circuit Short to Battery This CMDTC sets when the HVAC module senses higher than expected voltage on the actuator motor circuit when ground is applied to drive the motor, indicating a short to voltage.
    B1082:13 Right Temperature Damper Motor: Circuit Open This CMDTC sets when the HVAC module senses no voltage on the actuator motor circuit when ground is applied to drive the motor, indicating an open circuit.
    B11E6:11 Right HVAC Damper Position Sensor: Circuit Short to Ground This CMDTC sets when the HVAC module senses less than 1 volt on the actuator feedback circuit, indicating a short to ground.
    B11E6:15 Right HVAC Damper Position Sensor: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses greater than 4 volts on the actuator feedback circuit, indicating an open circuit or a short to voltage.

     
    PINPOINT TEST P: Pinpoint Test P: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — RH
    Test Step Result / Action to Take
      P1 CHECK THE HVAC MODULE FOR DTCs  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Are any DTCs present?
    		Yes
    For DTC B1082:11, GO to P3 .

    For DTC B1082:12, GO to P4 .

    For DTC B1082:13, GO to P5 .

    For DTC B11E6:11, GO to P7 .

    For DTC B11E6:15, GO to P9 .

    No
    GO to P2 .
      P2 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR OPERATION USING ACTIVE COMMANDS  
    • Start the engine.
    • Run the engine until it reaches normal operating temperature.
    • Enter the following diagnostic mode on the scan tool: DataLogger — HVAC Module.
    • Select PANEL mode on the HVAC controls.
    • Select the highest blower motor setting.
    • Monitor airflow while using the scan tool to operate the HVAC module active command RIGHT_BLEND, increasing and decreasing the percentage value.
    • Does the airflow temperature change between warm and cold when the active command is changed?
    		Yes
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.

    No
    INSPECT for broken linkage or door. REPAIR as necessary. If no condition is found, GO to P14 .
      P3 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: RH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-13 CH213 (BN/GN) — Ground
      C228B-12 CH212 (BU/OG) — Ground



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to P6 .

    No
    REPAIR the circuit in question.
      P4 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: RH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-13 CH213 (BN/GN) — Ground
      C228B-12 CH212 (BU/OG) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit in question.

    No
    GO to P6 .
      P5 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: RH Temperature Blend Door Actuator.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-12 CH212 (BU/OG) C2092-6 CH212 (BU/OG)
      C228B-13 CH213 (BN/GN) C2092-5 CH213 (BN/GN)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to P14 .

    No
    REPAIR the circuit in question.
      P6 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER  

      NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.

    • Ignition OFF.
    • Disconnect: RH Temperature Blend Door Actuator.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-12 CH212 (BU/OG) C228B-13 CH213 (BN/GN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to P14 .

    No
    REPAIR the circuits.
      P7 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: RH Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-4 VH441 (WH/BN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to P8 .

    No
    REPAIR the circuit.
      P8 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO THE RH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C228B-4 VH441 (WH/BN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to P14 .

    No
    REPAIR the circuits.
      P9 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: RH Temperature Blend Door Actuator.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-4 VH441 (WH/BN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to P10 .
      P10 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C2092-1 LH111 (BN/WH)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to P11 .

    No
    REPAIR the circuit.
      P11 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO THE RH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT  
    • Ignition OFF.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C228B-4 VH441 (WH/BN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to P12 .

    No
    REPAIR the circuits.
      P12 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR AN OPEN  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-4 VH441 (WH/BN) C2092-2 VH441 (WH/BN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to P13 .

    No
    REPAIR the circuit.
      P13 CHECK THE RH TEMPERATURE BLEND DOOR ACTUATOR RETURN SIGNAL RETURN CIRCUIT FOR AN OPEN  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C2092-3 RH111 (GY/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to P14 .

    No
    REPAIR the circuit.
      P14 CHECK FOR CORRECT RH TEMPERATURE BLEND DOOR ACTUATOR OPERATION  
    • Ignition OFF.
    • Disconnect and inspect the RH temperature blend door actuator connector.
    • 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
    • Reconnect the RH temperature blend door actuator connector. Make sure it seats and latches correctly.
    • Connect all HVAC module connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    INSTALL a new RH temperature blend door actuator, REFER to Section 412-01 Temperature Blend Door Actuator - RH. TEST the system for normal operation. If the concern is still present, GO to P15 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      P15 MODULE ACTUATOR POSITION CALIBRATION  

      NOTE: The purpose of the module actuator position calibration is to allow the HVAC module to reinitialize and calibrate the actuator stop points.

    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • Ignition ON.
    • Clear the DTCs.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Select any position except OFF.
    • NOTE: The HVAC module initializes and calibrates the actuators. Calibration of the actuators takes approximately 30 seconds.
    • 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 .

    No
    The system is now operating correctly at this time. The concern may have been caused by a foreign object in the HVAC case or temporary binding that restricted actuator door travel. CHECK any actuator external linkage. If the condition recurs, INSPECT actuator linkage and door for binding and CHECK HVAC case for foreign objects.
     

    Pinpoint Test Q: The Blower Motor is Inoperative

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    Ground is provided for the blower motor speed control. Voltage is provided to the blower motor relay coil and switch contacts. When the blower motor relay coil receives a ground from the HVAC module, the relay coil is energized and voltage is delivered from the blower motor relay to the blower motor. A varying ground for the blower motor is provided from the blower motor speed control. The HVAC module provides a blower target speed signal to the blower motor speed control to control the blower speed. The actual blower speed signal is provided to the HVAC module from the blower motor speed control.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B10AF:12 Blower Fan Relay: Circuit Short to Battery This CMDTC sets when the HVAC module senses voltage on the relay coil ground circuit when the relay is grounded by the HVAC module, indicating a short directly to voltage.
    B10AF:13 Blower Fan Relay: Circuit Open This CMDTC sets when the HVAC module senses no voltage on the relay coil ground circuit when the relay is not grounded by the HVAC module, indicating an open.
    B10B9:14 Blower Control: Circuit Short to Ground or Open This CMDTC sets when the HVAC module senses no voltage on the blower motor control target speed signal circuit, indicating an open or a short directly to ground.

     
    PINPOINT TEST Q: THE BLOWER MOTOR IS INOPERATIVE
    Test Step Result / Action to Take
      Q1 CHECK THE HVAC MODULE FOR DTCs  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Are any DTCs present?
    		Yes
    For DTC B10AF:12, GO to Q2 .

    For DTC B10AF:13, GO to Q4 .

    For DTC B10B9:14, GO to Q8 .

    No
    GO to Q7 .
      Q2 CHECK THE BLOWER MOTOR RELAY FUNCTIONALITY  
    • Install a known good blower motor relay.
    • Does the blower motor function correctly?
    		Yes
    INSTALL a new blower motor relay.

    No
    GO to Q3 .
      Q3 CHECK THE BLOWER MOTOR CONTROL CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: Blower Motor Relay.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Blower Motor Relay Socket-1 CH123 (VT/GN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to Q17 .
      Q4 CHECK THE BLOWER MOTOR RELAY FUNCTIONALITY  
    • Install a known good blower motor relay.
    • Does the blower motor function correctly?
    		Yes
    INSTALL a new blower motor relay.

    No
    GO to Q5 .
      Q5 CHECK THE BLOWER MOTOR RELAY COIL SUPPLY VOLTAGE  
    • Ignition OFF.
    • Disconnect: Blower Motor Relay.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Blower Motor Relay Socket-2 CBB 89 (VT/GY) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to Q6 .

    No
    VERIFY BJB fuse 89 (5A) 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.
      Q6 CHECK THE BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-11 CH123 (VT/GN) Blower Motor Relay Socket-1 CH123 (VT/GN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-11 CH123 (VT/GN) Blower Motor Relay Socket-1 CH123 (VT/GN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to Q17 .

    No
    REPAIR the circuit.
      Q7 CHECK THE BLOWER MOTOR OPERATION USING ACTIVE COMMANDS  
    • Enter the following diagnostic mode on the scan tool: DataLogger — HVAC Module.
    • Select PANEL mode on the HVAC controls.
    • Select the lowest blower motor setting.
    • Monitor blower motor speed while using the scan tool to operate the active command BLOWRSPD, increasing and decreasing the percentage value.
    • Does the blower motor speed change between low and high when the active command is changed?
    		Yes
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.

    No
    GO to Q8 .
      Q8 CHECK THE BLOWER MOTOR RELAY FUNCTIONALITY  
    • Install a known good blower motor relay.
    • Does the blower motor function correctly?
    		Yes
    INSTALL a new blower motor relay.

    No
    GO to Q9 .
      Q9 CHECK FOR VOLTAGE AT THE BLOWER MOTOR RELAY SWITCH CONTACT  
    • Disconnect: Blower Motor Relay.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Blower Motor Relay Socket-3 SBB18 (YE/RD) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to Q10 .

    No
    VERIFY BJB fuse 18 (40A) 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.
      Q10 CHECK VOLTAGE TO THE BLOWER MOTOR WITH THE BLOWER MOTOR RELAY BYPASSED  
    • Disconnect: Blower Motor.
    • Connect a fused jumper wire between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Blower Motor Relay Socket-3 SBB18 (YE/RD) Blower Motor Relay Socket-5 CH402 (YE/GN)



    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2004-1 CH402 (YE/GN) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    DISCONNECT the fused jumper wire. CONNECT the motor relay. GO to Q11 .

    No
    REPAIR the circuit.
      Q11 CHECK THE BLOWER MOTOR SPEED CONTROL POWER CIRCUIT FOR VOLTAGE  
    • Ignition OFF.
    • Disconnect: Blower Motor Speed Control.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C271-4 CH402 (YE/GN) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to Q12 .

    No
    REPAIR the circuit.
      Q12 CHECK FOR BLOWER MOTOR FUNCTIONALITY WITH A TEST LIGHT IN PLACE OF THE BLOWER MOTOR  

      NOTICE: This step 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 or equivalent. 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.

    • Ignition OFF.
    • Connect a test light between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2004-1 CH402 (YE/GN) — Ground



    • Ignition ON.
    • Select panel mode with the blower motor on high.
    • Does the test light illuminate?
    		Yes
    INSTALL a new blower motor. REFER to Section 412-01 .

    No
    GO to Q13 .
      Q13 CHECK THE BLOWER MOTOR GROUND CIRCUIT FOR AN OPEN  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2004-2 VH301 (YE/BU) C271-2 VH301 (YE/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to Q14 .

    No
    REPAIR the circuit.
      Q14 CHECK THE BLOWER MOTOR SPEED CONTROL GROUND CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: Blower Motor Speed Control.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C271-1 GD375 (BK/BU) — Ground



    • Is the resistance less than 3 ohms?
    		Yes
    GO to Q15 .

    No
    REPAIR the circuit.
      Q15 CHECK THE BLOWER MOTOR SPEED CONTROL COMMAND CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C271-3 VH101 (WH/VT) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to Q16 .

    No
    REPAIR the circuit.
      Q16 CHECK THE BLOWER MOTOR SPEED CONTROL COMMAND CIRCUIT FOR AN OPEN  
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C271-3 VH101 (WH/VT) C228A-1 VH101 (WH/VT)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C271-3 VH101 (WH/VT) C2357A-1 VH101 (WH/VT)



    • Is the resistance less than 3 ohms?
    		Yes
    INSTALL a new blower motor speed control. REFER to Section 412-01 . If the concern is still present, GO to Q17 .

    No
    REPAIR the circuit.
      Q17 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test R: The Blower Motor Does Not Operate Correctly

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    Voltage is provided to the blower motor relay coil and switch contacts. When the blower motor relay coil receives a ground from the HVAC module, the relay coil is energized and voltage is delivered from the blower motor relay to the blower motor. A varying ground for the blower motor is provided from the blower motor speed control. Ground is provided for the blower motor speed control. The HVAC module provides a blower target speed signal to the blower motor speed control to control the blower speed. The actual blower speed signal is provided to the HVAC module from the blower motor speed control.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B10B9:12 Blower Control: Circuit Short to Battery This CMDTC sets when the HVAC module senses excessive voltage on the blower motor control target speed signal circuit, indicating a short directly to voltage.

     
    PINPOINT TEST R: THE BLOWER MOTOR DOES NOT OPERATE CORRECTLY
    Test Step Result / Action to Take
      R1 CHECK THE HVAC MODULE FOR DTCs  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Is DTC B10B9:12 present?
    		Yes
    GO to R7 .

    No
    GO to R2 .
      R2 CHECK THE BLOWER MOTOR OPERATION USING ACTIVE COMMANDS  
    • Enter the following diagnostic mode on the scan tool: DataLogger — HVAC Module.
    • Select panel mode on the HVAC controls.
    • Select the lowest blower motor setting.
    • Monitor blower motor speed while using the scan tool to operate the HVAC module active command BLOWRSPD, increasing and decreasing the percentage value.
    • Does the blower motor speed change between low and high when the active command is changed?
    		Yes
    For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Section 415-00A Symptom Chart.

    For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Section 415-00B Symptom Chart.

    For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Section 415-00C Symptom Chart.

    No
    GO to R3 .
      R3 CHECK THE BLOWER MOTOR RELAY COIL SWITCH GROUND CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: Blower Motor Relay.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Blower Motor Relay Socket-1 CH123 (VT/GN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to R4 .

    No
    REPAIR the circuit.
      R4 CHECK THE BLOWER MOTOR VOLTAGE CIRCUIT FOR A SHORT TO VOLTAGE  
    • Disconnect: Blower Motor.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2004-1 CH402 (YE/GN) — Ground



    • Is any voltage present?
    		Yes
    GO to R5 .

    No
    GO to R6 .
      R5 CHECK FOR VOLTAGE AT THE BLOWER MOTOR WITH THE BLOWER MOTOR RELAY DISCONNECTED  
    • Disconnect: Blower Motor Relay.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2004-1 CH402 (YE/GN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    INSTALL a new blower motor relay.
      R6 CHECK THE BLOWER MOTOR SPEED CONTROLLER FUNCTIONALITY  
    • Install a known good blower motor speed controller.
    • Ignition ON.
    • Operate the blower motor.
    • Does the blower motor function correctly?
    		Yes
    INSTALL a new blower motor speed controller. REFER to Section 412-01 .

    No
    GO to R8 .
      R7 CHECK THE BLOWER MOTOR SPEED CONTROL COMMAND CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C271-3 VH101 (WH/VT) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to R8 .
      R8 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test S: The Auxiliary Blower Motor is Inoperative

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 52 , Auxiliary Climate Control for schematic and connector information.

    Normal Operation and Fault Conditions

    The auxiliary blower motor relay coil receives a ground from the HVAC module. When the relay coil is energized, voltage is delivered from the relay to the auxiliary blower motor speed control and auxiliary blower motor. The auxiliary blower motor speed control is grounded. The HVAC module provides a PWM signal to the auxiliary blower motor speed control to control the blower speed. Ground for the motor is provided from the auxiliary blower motor speed control.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B10B0:12 Rear Blower Fan Relay: Circuit Short to Battery This CMDTC sets when the HVAC module senses excessive voltage on the relay coil ground circuit, indicating a short to voltage.
    B10B0:13 Rear Blower Fan Relay: Circuit Open This CMDTC sets when the HVAC module senses no voltage on the relay coil ground circuit, indicating an open.
    B10BA:14 Rear Blower Control: Circuit Short to Ground or Open This CMDTC sets when the HVAC module senses no voltage on the blower motor PWM command circuit, indicating an open or a short directly to ground.

     
    PINPOINT TEST S: THE AUXILIARY BLOWER MOTOR IS INOPERATIVE
    Test Step Result / Action to Take
      S1 CHECK THE HVAC MODULE FOR DTCS  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Are any DTCs present?
    		Yes
    For DTC B10B0:12, GO to S2 .

    For DTC B10B0:13, GO to S4 .

    For DTC B10BA:14, GO to S7 .

    No
    GO to S7 .
      S2 CHECK THE AUXILIARY BLOWER MOTOR RELAY FUNCTIONALITY  
    • Install a known good auxiliary blower motor relay.
    • Does the auxiliary blower motor function correctly?
    		Yes
    INSTALL a new auxiliary blower motor relay.

    No
    GO to S3 .
      S3 CHECK THE AUXILIARY BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: Auxiliary Blower Motor Relay.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Auxiliary Blower Motor Relay Socket-2 CH112 (VT/WH) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to S16 .
      S4 CHECK THE AUXILIARY BLOWER MOTOR RELAY FUNCTIONALITY  
    • Install a known good auxiliary blower motor relay.
    • Does the auxiliary blower motor function correctly?
    		Yes
    INSTALL a new auxiliary blower motor relay.

    No
    GO to S5 .
      S5 CHECK THE AUXILIARY BLOWER MOTOR RELAY COIL SUPPLY VOLTAGE  
    • Ignition OFF.
    • Disconnect: Auxiliary Blower Motor Relay.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Auxiliary Blower Motor Relay Socket-1 CBB93 (GY/BN) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to S6 .

    No
    VERIFY BJB fuse 93 (5A) 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.
      S6 CHECK THE AUXILIARY BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Auxiliary Blower Motor Relay Socket-2 CH112 (VT/WH) C228B-20 CH112 (VT/WH)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Auxiliary Blower Motor Relay Socket-2 CH112 (VT/WH) C2357B-20 CH112 (VT/WH)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to S16 .

    No
    REPAIR the circuit.
      S7 CHECK THE AUXILIARY BLOWER MOTOR RELAY FUNCTIONALITY  
    • Install a known good auxiliary blower motor relay.
    • Does the auxiliary blower motor function correctly?
    		Yes
    INSTALL a new auxiliary blower motor relay.

    No
    GO to S8 .
      S8 CHECK FOR VOLTAGE AT THE AUXILIARY BLOWER MOTOR RELAY SWITCH CONTACT  
    • Disconnect: Auxiliary Blower Motor Relay.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Auxiliary Blower Motor Relay Socket-3 SBB39 (WH/RD) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to S9 .

    No
    VERIFY BJB fuse 39 (30A) 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.
      S9 CHECK VOLTAGE TO THE AUXILIARY BLOWER MOTOR WITH THE AUXILIARY BLOWER MOTOR RELAY BYPASSED  
    • Ignition OFF.
    • Disconnect: Auxiliary Blower Motor.
    • Connect a fused jumper wire between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Auxiliary Blower Motor Relay Socket-3 SBB39 (WH/RD) Auxiliary Blower Motor Relay Socket-5 CHA02 (BN/GN)



    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4106-2 CHA02 (BN/GN) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    Disconnect the fused jumper wire and connect the auxiliary blower motor relay. GO to S10 .

    No
    REPAIR the circuit.
      S10 CHECK THE AUXILIARY BLOWER MOTOR SPEED CONTROL POWER CIRCUIT FOR VOLTAGE  
    • Disconnect: Auxiliary Blower Motor Speed Control.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4406-2 CHA02 (BN/GN) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to S11 .

    No
    REPAIR the circuit.
      S11 CHECK FOR AUXILIARY BLOWER MOTOR FUNCTIONALITY WITH A TEST LIGHT IN PLACE OF THE AUXILIARY BLOWER MOTOR  

      NOTICE: This step 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 or equivalent. 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.

    • Ignition OFF.
    • Connect: Auxiliary Blower Motor Speed Control.
    • Connect a test light between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4106-2 CHA02 (BN/GN) C4106-1 VHA19 (BN)



    • Ignition ON.
    • Select panel mode with the auxiliary blower motor on high.
    • Does the test lamp illuminate?
    		Yes
    INSTALL a new auxiliary blower motor. REFER to Section 412-02 .

    No
    GO to S12 .
      S12 CHECK THE AUXILIARY BLOWER MOTOR GROUND CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: Auxiliary Blower Motor Speed Control.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4106-1 VHA19 (BN) C4406-1 VHA19 (BN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to S13 .

    No
    REPAIR the circuit.
      S13 CHECK THE AUXILIARY BLOWER MOTOR SPEED CONTROL GROUND CIRCUIT FOR AN OPEN  
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4406-6 GD349 (BK/GY) — Ground



    • Is the resistance less than 3 ohms?
    		Yes
    GO to S14 .

    No
    REPAIR the circuit.
      S14 CHECK THE AUXILIARY BLOWER MOTOR SPEED CONTROL COMMAND CIRCUIT FOR A SHORT TO GROUND  
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4406-5 VHA25 (BN/VT) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to S15 .

    No
    REPAIR the circuit.
      S15 CHECK THE AUXILIARY BLOWER MOTOR SPEED CONTROL COMMAND CIRCUIT FOR AN OPEN  
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4406-5 VHA25 (BN/VT) C228B-19 VHA25 (BN/VT)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4406-5 VHA25 (BN/VT) C2357B-19 VHA25 (BN/VT)



    • Is the resistance less than 3 ohms?
    		Yes
    INSTALL a new auxiliary blower motor speed control. REFER to Section 412-02 . If the concern is still present, GO to S16 .

    No
    REPAIR the circuit.
      S16 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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
    • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
    • 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 TSBs address this concern, INSTALL a new HVAC module. REFER to Section 412-01 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test T: The Auxiliary Blower Motor Does Not Operate Correctly

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 52 , Auxiliary Climate Control for schematic and connector information.

    Normal Operation and Fault Conditions

    The auxiliary blower motor relay coil receives a ground from the HVAC module. When the relay coil is energized, voltage is delivered from the relay to the auxiliary blower motor speed control and auxiliary blower motor. The auxiliary blower motor speed control is grounded. The HVAC module provides a PWM signal to the auxiliary blower motor speed control to control the blower speed. Ground for the motor is provided from the auxiliary blower motor speed control.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B10BA:12 Rear Blower Control: Circuit Short to Battery This CMDTC sets when the HVAC module senses excessive voltage on the blower motor control PWM circuit for more than 20 milliseconds.

     
    PINPOINT TEST T: THE AUXILIARY BLOWER MOTOR DOES NOT OPERATE CORRECTLY
    Test Step Result / Action to Take
      T1 CHECK THE HVAC MODULE FOR DTCS  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Is DTC B10BA:12 present?
    		Yes
    GO to T4 .

    No
    GO to T2 .
      T2 CHECK THE AUXILIARY BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: Auxiliary Blower Motor Relay.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      Auxiliary Blower Motor Relay Socket-2 CH112 (VT/WH) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to T3 .

    No
    REPAIR the circuit.
      T3 CHECK THE AUXILIARY BLOWER MOTOR VOLTAGE CIRCUIT FOR A SHORT TO VOLTAGE  
    • Disconnect: Auxiliary Blower Motor.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4106-2 CHA02 (BN/GN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to T4 .
      T4 CHECK THE AUXILIARY BLOWER MOTOR SPEED CONTROL COMMAND CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Disconnect: Auxiliary Blower Motor Speed Control.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4406-5 VHA25 (BN/VT) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to T5 .
      T5 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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
    • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
    • 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 TSBs address this concern, INSTALL a new HVAC module. REFER to Section 412-01 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test U: The Auxiliary Temperature Control is Inoperative/Does Not Operate Correctly Using the Front/Rear Auxiliary Climate Controls

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 52 , Auxiliary Climate Control for schematic and connector information.

    Normal Operation and Fault Conditions

    To rotate the auxiliary temperature blend door actuator, the HVAC module supplies voltage and ground to the auxiliary temperature blend door actuator through the door actuator motor circuits. To reverse the auxiliary temperature blend door actuator rotation, the HVAC module reverses the voltage and ground circuits.

    The auxiliary temperature blend door actuator feedback resistor is supplied a 5-volt reference voltage and ground from the HVAC module. The HVAC module measures the resistance on the auxiliary temperature blend door actuator feedback circuit to determine the auxiliary temperature blend door actuator position by the position of the actuator feedback resistor wiper arm.

    During an actuator calibration cycle, the HVAC module drives the auxiliary temperature blend door until the door reaches both internal stops in the HVAC case. If the auxiliary temperature blend door is temporarily obstructed or binding during a calibration cycle, the HVAC module may interpret this as the actual end of travel for the door. When this condition occurs and the HVAC module commands the actuator to its end of travel, the airflow may not be from the expected outlets.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B10B7:11 Rear Air Discharge Temperature: Circuit Short to Ground This CMDTC sets when the HVAC module senses less than expected voltage on the actuator feedback circuit, indicating a short to ground.
    B10B7:15 Rear Air Discharge Temperature: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses greater than expected voltage on the actuator feedback circuit, indicating an open circuit or a short to voltage.
    B11E3:11 Rear HVAC Damper Motor: Circuit Short to Ground This CMDTC sets when the HVAC module senses a short to ground on an actuator motor circuit when voltage is applied to drive the motor.
    B11E3:12 Rear HVAC Damper Motor: Circuit Short to Battery This CMDTC sets when the HVAC module senses a short to voltage on the actuator motor circuit when ground is applied to drive the motor.
    B11E3:13 Rear HVAC Damper Motor: Circuit Open This CMDTC sets when the HVAC module senses an open on the actuator motor circuit when ground is applied to drive the motor.

     
    PINPOINT TEST U: THE AUXILIARY TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY USING THE FRONT/REAR AUXILIARY CLIMATE CONTROLS
    Test Step Result / Action to Take
      U1 CHECK THE HVAC MODULE FOR DTCS  
    • Ignition ON.
    • Using a scan tool, perform a HVAC module self-test.
    • Are any DTCs present?
    		Yes
    For DTC B11E3:11, GO to U2 .

    For DTC B11E3:12, GO to U3 .

    For DTC B11E3:13, GO to U5 .

    For DTC B10B7:11, GO to U6 .

    For DTC B10B7:15, GO to U8 .

    No
    GO to U2 .
      U2 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: Auxiliary Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4341-5 CH244 (GY) — Ground
      C4341-6 CH245 (BU/BN) — Ground



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to U4 .

    No
    REPAIR the circuit in question.
      U3 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: Auxiliary Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4341-5 CH244 (GY) — Ground
      C4341-6 CH245 (BU/BN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit in question.

    No
    GO to U4 .
      U4 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER  
    • Ignition OFF.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4341-5 CH244 (GY) C4341-6 CH245 (BU/BN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to U13 .

    No
    REPAIR the circuit.
      U5 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: Auxiliary Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-27 CH244 (GY) C4341-5 CH244 (GY)
      C228B-28 CH245 (BU/BN) C4341-6 CH245 (BU/BN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357B-27 CH244 (GY) C4341-5 CH244 (GY)
      C2357B-28 CH245 (BU/BN) C4341-6 CH245 (BU/BN)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to U13 .

    No
    REPAIR the circuit in question.
      U6 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: Auxiliary Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4341-2 VHA09 (VT/BN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to U7 .

    No
    REPAIR the circuit.
      U7 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT  
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C228B-7 VHA09 (VT/BN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C2357B-7 VHA09 (VT/BN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to U13 .

    No
    REPAIR the circuits.
      U8 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: Auxiliary Temperature Blend Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4341-2 VHA09 (VT/BN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to U9 .
      U9 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR REFERENCE VOLTAGE CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C4341-3 LH111 (BN/WH)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C4341-3 LH111 (BN/WH)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to U10 .

    No
    REPAIR the circuit.
      U10 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO THE FEEDBACK CIRCUIT  
    • Ignition OFF.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C228B-7 VHA09 (VT/BN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C2357B-7 VHA09 (VT/BN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to U11 .

    No
    REPAIR the circuits.
      U11 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR FEEDBACK CIRCUIT FOR AN OPEN  
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-7 VHA09 (VT/BN) C4341-2 VHA09 (VT/BN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357B-7 VHA09 (VT/BN) C4341-2 VHA09 (VT/BN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to U12 .

    No
    REPAIR the circuit.
      U12 CHECK THE AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR SIGNAL RETURN CIRCUIT FOR AN OPEN  
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C4341-1 RH111 (GY/BU)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C4341-1 RH111 (GY/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to U13 .

    No
    REPAIR the circuit.
      U13 CHECK FOR CORRECT AUXILIARY TEMPERATURE BLEND DOOR ACTUATOR OPERATION  
    • Ignition OFF.
    • Disconnect and inspect the auxiliary temperature blend door actuator connector.
    • 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
    • Reconnect the auxiliary temperature blend door actuator connector. Make sure they seat and latch correctly.
    • Connect all HVAC module connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    INSTALL a new auxiliary temperature blend door actuator; REFER to Section 412-02 . If the concern is still present, GO to U14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      U14 MODULE ACTUATOR POSITION CALIBRATION  

      NOTE: The purpose of the module actuator position calibration is to allow the HVAC module to reinitialize and calibrate the actuator stop points.

    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • Ignition ON.
    • Clear the DTCs.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Select any position except OFF.
    • NOTE: The HVAC module initializes and calibrates the actuators. Calibration of the actuators takes approximately 30 seconds.
    • 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 TSBs address this concern, INSTALL a new HVAC module. REFER to Section 412-01 .

    No
    The system is now operating correctly at this time. The concern may have been caused by a foreign object in the HVAC case or temporary binding that restricted actuator door travel. CHECK any actuator external linkage. If condition recurs, INSPECT actuator linkage and door for binding and CHECK HVAC case for foreign objects.
     

    Pinpoint Test V: The Auxiliary Panel/Floor Mode Control Is Inoperative/Does Not Operate Correctly Using the Front/Rear Auxiliary Climate Controls

    Refer to Wiring Diagrams Cell 52 , Auxiliary Climate Control for schematic and connector information.

    Normal Operation and Fault Conditions

    To rotate the auxiliary mode door actuator, the HVAC module supplies voltage and ground to the auxiliary mode door actuator motor through the door actuator motor circuits. To reverse the auxiliary mode door actuator rotation, the HVAC module reverses the voltage and ground circuits.

    The auxiliary mode door actuator feedback resistor is supplied a 5-volt reference voltage and ground from the HVAC module. The HVAC module measures the resistance on the auxiliary mode door actuator feedback circuit to determine the auxiliary mode door actuator position by the position of the actuator feedback resistor wiper arm.

    During an actuator calibration cycle, the HVAC module drives the auxiliary mode door until the door reaches both internal stops in the HVAC case. If the auxiliary mode door is temporarily obstructed or binding during a calibration cycle, the HVAC module may interpret this as the actual end of travel for the door. When this condition occurs and the HVAC module commands the actuator to its end of travel, the airflow may not be from the expected outlets.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B11E4:11 Rear Air Distribution Damper Motor: Circuit Short to Ground This CMDTC sets when the HVAC module senses a short to ground on an actuator motor circuit when voltage is applied to drive the motor.
    B11E4:12 Rear Air Distribution Damper Motor: Circuit Short to Battery This CMDTC sets when the HVAC module senses a short to voltage on the actuator motor circuit when ground is applied to drive the motor.
    B11E4:13 Rear Air Distribution Damper Motor: Circuit Open This CMDTC sets when the HVAC module senses an open on the actuator motor circuit when ground is applied to drive the motor.
    B1B7D:11 Rear Air Distribution Actuator: Circuit Short to Ground This CMDTC sets when the HVAC senses less than expected voltage on the actuator feedback circuit, indicating a short to ground.
    B1B7D:15 Rear Air Distribution Actuator: Circuit Short to Battery or Open This CMDTC sets when the HVAC senses greater than expected voltage on the actuator feedback circuit, indicating an open circuit or a short to voltage.

     
    PINPOINT TEST V: Pinpoint Test V: THE AUXILIARY PANEL/FLOOR MODE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY USING THE FRONT/REAR AUXILIARY CLIMATE CONTROLS
    Test Step Result / Action to Take
      V1 CHECK THE HVAC MODULE FOR DTCS  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Are any DTCs present?
    		Yes
    For DTC B11E4:11, GO to V2 .

    For DTC B11E4:12, GO to V3 .

    For DTC B11E4:13, GO to V5 .

    For DTC B1B7D:11, GO to V6 .

    For DTC B1B7D:15, GO to V8 .

    No
    GO to V2 .
      V2 CHECK THE AUXILIARY MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: Auxiliary Mode Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4342-5 CH242 (VT) — Ground
      C4342-6 CH243 (BU) — Ground



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to V4 .

    No
    REPAIR the circuit in question.
      V3 CHECK THE AUXILIARY MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: Auxiliary Mode Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4342-5 CH242 (VT) — Ground
      C4342-6 CH243 (BU) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit in question.

    No
    GO to V4 .
      V4 CHECK THE AUXILIARY MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER  
    • Ignition OFF.
    • Disconnect: Auxiliary Mode Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4342-5 CH242 (VT) C4342-6 CH243 (BU)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to V13 .

    No
    REPAIR the circuits.
      V5 CHECK THE AUXILIARY MODE DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: Auxiliary Mode Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-25 CH242 (VT) C4342-5 CH242 (VT)
      C228B-26 CH243 (BU) C4342-6 CH243 (BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357B-25 CH242 (VT) C4342-5 CH242 (VT)
      C2357B-26 CH243 (BU) C4342-6 CH243 (BU)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to V13 .

    No
    REPAIR the circuit in question.
      V6 CHECK THE AUXILIARY MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: Auxiliary Mode Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4342-2 VHA18 (YE/GN) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to V7 .

    No
    REPAIR the circuit.
      V7 CHECK THE AUXILIARY MODE DOOR ACTUATOR SIGNAL RETURN CIRCUIT FOR A SHORT TO THE FEEDBACK CIRCUIT  
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C228B-8 VHA18 (YE/GN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C2357B-8 VHA18 (YE/GN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to V13 .

    No
    REPAIR the circuits.
      V8 CHECK THE AUXILIARY MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: Auxiliary Mode Door Actuator.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4342-2 VHA18 (YE/GN) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to V9 .
      V9 CHECK THE AUXILIARY MODE DOOR ACTUATOR REFERENCE VOLTAGE CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C4342-3 LH111 (BN/WH)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C4342-3 LH111 (BN/WH)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to V10 .

    No
    REPAIR the circuit.
      V10 CHECK THE AUXILIARY MODE DOOR ACTUATOR REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO THE FEEDBACK CIRCUIT  
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C228B-8 VHA18 (YE/GN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-24 LH111 (BN/WH) C2357B-8 VHA18 (YE/GN)



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to V11 .

    No
    REPAIR the circuits.
      V11 CHECK THE AUXILIARY MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR AN OPEN  
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-8 VHA18 (YE/GN) C4342-2 VHA18 (YE/GN)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357B-8 VHA18 (YE/GN) C4342-2 VHA18 (YE/GN)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to V12 .

    No
    REPAIR the circuit.
      V12 CHECK THE AUXILIARY MODE DOOR ACTUATOR RETURN CIRCUIT FOR AN OPEN  
    • For DATC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-23 RH111 (GY/BU) C4342-1 RH111 (GY/BU)



    • For EMTC measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357A-23 RH111 (GY/BU) C4342-1 RH111 (GY/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to V13 .

    No
    REPAIR the circuit.
      V13 CHECK FOR CORRECT AUXILIARY MODE DOOR ACTUATOR OPERATION  
    • Ignition OFF.
    • Disconnect and inspect the auxiliary mode door actuator connector.
    • 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
    • Reconnect the auxiliary mode door actuator connector. Make sure it seats and latches correctly.
    • Connect all HVAC module connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    INSTALL a new auxiliary mode door actuator, REFER to Section 412-02 Auxiliary Mode Door Actuator. If the concern is still present, GO to V14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      V14 MODULE ACTUATOR POSITION CALIBRATION  

      NOTE: The purpose of the module actuator position calibration is to allow the HVAC module to reinitialize and calibrate the actuator stop points.

    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • Ignition ON.
    • Clear the DTCs.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Select any position except OFF.
    • NOTE: The HVAC module initializes and calibrates the actuators. Calibration of the actuators takes approximately 30 seconds.
    • 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 TSBs address this concern, INSTALL a new HVAC module. REFER to Section 412-01 .

    No
    The system is now operating correctly at this time. The concern may have been caused by a foreign object in the HVAC case or temporary binding that restricted actuator door travel. CHECK any actuator external linkage. If condition recurs, INSPECT actuator linkage and door for binding and CHECK HVAC case for foreign objects.
     

    Pinpoint Test W: The Auxiliary Temperature, Panel/Floor Mode or Blower Motor Controls are Inoperative/Do Not Operate Correctly Using the Rear Auxiliary Climate Controls Only

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 52 , Auxiliary Climate Control for schematic and connector information.

    Normal Operation and Fault Conditions

    The rear auxiliary control is supplied a 5-volt reference and ground from the HVAC module. When the auxiliary blower motor speed, airflow mode or temperature control is adjusted, the HVAC module reads the voltage from the rear auxiliary climate controls on the auxiliary blower motor speed, airflow mode and temperature control feedback circuits to determine the requested setting.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B11EB:11 Rear HVAC Temperature Control Input: Circuit Short to Ground This CMDTC sets when the HVAC module senses a short to ground on the rear auxiliary climate controls temperature input circuit.
    B11EB:15 Rear HVAC Temperature Control Input: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses an open circuit or a short to voltage on the rear auxiliary climate controls temperature input circuit.
    B11EC:11 Rear HVAC Blower Control Input: Circuit Short to Ground This CMDTC sets when the HVAC module senses a short to ground on the rear auxiliary climate controls blower speed input circuit.
    B11EC:15 Rear HVAC Blower Control Input: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses an open circuit or a short to voltage on the rear auxiliary climate controls blower speed input circuit.
    B121D:11 Rear HVAC Mode Control Input: Circuit Short to Ground This CMDTC sets when the HVAC module senses a short to ground on the rear auxiliary climate controls airflow mode input circuit.
    B121D:15 Rear HVAC Mode Control Input: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses an open circuit or a short to voltage on the rear auxiliary climate controls airflow mode input circuit.

     
    PINPOINT TEST W: THE AUXILIARY TEMPERATURE, PANEL/FLOOR MODE OR BLOWER MOTOR CONTROLS ARE INOPERATIVE/DO NOT OPERATE CORRECTLY USING THE REAR AUXILIARY CLIMATE CONTROLS ONLY
    Test Step Result / Action to Take
      W1 CHECK THE CIRCUIT BETWEEN THE HVAC MODULE AND THE AUXILIARY CLIMATE CONTROL ASSEMBLY FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: Auxiliary Climate Control Assembly.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-24 VHA38 (GY) — Ground
      C228B-14 VHA39 (BU) — Ground
      C228B-11 CHA37 (WH) — Ground
      C228B-10 CHA36 (GY) — Ground
      C228B-9 CHA35 (BU) — Ground
      C228B-5 VHA19 (BN) — Ground



    • Is voltage present on any of the circuits?
    		Yes
    REPAIR the circuit in question.

    No
    GO to W2 .
      W2 CHECK THE CIRCUIT BETWEEN THE HVAC MODULE AND THE AUXILIARY CLIMATE CONTROL ASSEMBLY FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-24 VHA38 (GY) — Ground
      C228B-14 VHA39 (BU) — Ground
      C228B-11 CHA37 (WH) — Ground
      C228B-10 CHA36 (GY) — Ground
      C228B-9 CHA35 (BU) — Ground
      C228B-5 VHA19 (BN) — Ground



    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to W3 .

    No
    REPAIR the circuit in question.
      W3 CHECK THE CIRCUIT BETWEEN THE HVAC MODULE AND THE AUXILIARY CLIMATE CONTROL ASSEMBLY FOR AN OPEN  
    • Disconnect: HVAC Module C228A.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-24 VHA38 (GY) C3198-2 VHA38 (VT/GY)
      C228B-14 VHA39 (BU) C3198-3 VHA39 (BN/BU)
      C228B-11 CHA37 (WH) C3198-6 CHA37 (WH)
      C228B-10 CHA36 (GY) C3198-7 CHA36 (GY/BN)
      C228B-9 CHA35 (BU/BN) C3198-8 CHA35 (BU/BN)
      C228B-5 VHA19 (BN) C3198-4 VHA19 (BN)



    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228A-24 LH111 (BN/WH) C3198-5 LH111 (BN/WH)
      C228A-23 RH111 (GY/BU) C3198-1 RH111 (GY/BU)



    • Are the resistances less than 3 ohms?
    		Yes
    INSTALL a new auxiliary climate control assembly. REFER to Section 412-02 Auxiliary Climate Control Assembly. TEST the system for normal operation. If the condition returns, GO to W4 .

    No
    REPAIR the circuit in question.
      W4 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all HVAC module connectors. Make sure they seat and latch correctly.
    • 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 TSBs address this concern, INSTALL a new HVAC module. REFER to Section 412-01 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test X: The Air Conditioning Operation Is Erratic

    Normal Operation

    Under normal operation when the A/C system is on, the engine cooling fan operates as commanded ON or OFF by the PCM to cool down the A/C condenser core.

     
    PINPOINT TEST X: THE AIR CONDITIONING OPERATION IS ERRATIC
    Test Step Result / Action to Take
      X1 CHECK THE ENGINE COOLING FAN (FAN_DSD) PCM PID OPERATION  
    • Ignition OFF.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: FAN_DSD PCM PID..
    • Command the PID to drive the cooling fan from 0 to 100% of performance and confirm the fan increases speed as the percentage of performance commanded is increased.
    • Does the fan speed increase as the commanded performance is increased?
    		Yes
    REFER to Refrigerant System Tests , procedure to DIAGNOSE the A/C system.

    No
    Install a new cooling fan REFER to Section 303-03 .
     

    Pinpoint Test Y: DTCs B1A69:11 and B1A69:15

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    The humidity sensor receives power from the HVAC reference voltage circuit. The sensor modifies voltage depending on the humidity in the air. The HVAC module translates the voltage signal into a humidity reading.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1A69:11 Humidity Sensor: Circuit Short To Ground The HVAC module senses less than expected voltage on the humidity sensor circuit, indicating a short to ground or sensor.
    B1A69:15 Humidity Sensor: Circuit Short To Battery or Open The HVAC module senses greater than expected voltage on the humidity sensor circuit, indicating a short voltage or an open circuit or sensor.

     
    PINPOINT TEST Y: DTCs B1A69:11 AND B1A69:15
    Test Step Result / Action to Take
      Y1 CHECK FOR HVAC MODULE DTCs  
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Carry out the self-test.
    • Are DTCs C1B14:11 or C1B14:12 present?
    		Yes
    GO to Pinpoint Test C .

    No
    GO to Y2 .
      Y2 CHECK FOR VOLTAGE TO THE IN-VEHICLE TEMPERATURE/HUMIDITY SENSOR  
    • Ignition OFF.
    • Disconnect: In-Vehicle Temperature/Humidity Sensor.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2247-3 LH111 (BN/WH) — Ground



    • Is the voltage between 4.7 and 5 volts?
    		Yes
    For DTC B1A69:11 GO to Y3 . For DTC B1A69:15 GO to Y4 .

    No
    REPAIR the circuit.
      Y3 CHECK THE HUMIDITY SIGNAL CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2247-4 VH413 (WH/BU) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to Y6 .

    No
    REPAIR the circuit.
      Y4 CHECK THE HUMIDITY SIGNAL CIRCUIT FOR AN OPEN CIRCUIT  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — EMTC C2357A.
    • For DATC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-18 VH413 (WH/BU) C2247-4 VH413 (WH/BU)



    • For EMTC , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357B-18 VH413 (WH/BU) C2247-4 VH413 (WH/BU)



    • Is the resistance less than 3 ohms?
    		Yes
    GO to Y5 .

    No
    REPAIR the circuit.
      Y5 CHECK THE HUMIDITY SIGNAL CIRCUIT FOR A SHORT TO POWER  
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2247-4 VH413 (WH/BU) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to Y6 .
      Y6 ISOLATE THE IN-VEHICLE TEMPERATURE/HUMIDITY SENSOR  
    • Ignition OFF.
    • Connect: HVAC Module — DATC C228A.
    • Connect: HVAC Module — EMTC C2357A.
    • INSTALL a new in-vehicle temperature/humidity sensor. REFER to Section 412-01 .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Does DTC B1A69:11 or B1A69:15 return?
    		Yes
    GO to Y7 .

    No
    The cause of the concern was an inoperative in-vehicle temperature/humidity sensor.
      Y7 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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 all the HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test Z: DTC P06A0

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    The externally controlled variable displacement compressor is electronically controlled by the PCM. The PCM pulse width modulates the ground to the externally controlled variable displacement compressor to change the displacement of the A/C compressor.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    P06A0 Variable A/C Compressor Control Circuit The PCM senses greater than expected voltage on the sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.

     
    PINPOINT TEST Z: DTC P06A0
    Test Step Result / Action to Take
      Z1 CHECK FOR VOLTAGE TO THE A/C COMPRESSOR  
    • Ignition OFF.
    • Disconnect: Externally Controlled Variable Displacement Compressor.
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1110-2 CBB70 (YE) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to Z2 .

    No
    VERIFY the BJB fuse 70 (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.
      Z2 CHECK THE A/C COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: PCM C175B (3.5L Ti-VCT ) or C1381B (3.5L GTDI ).
    • Measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1110-1 VE462 (WH) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to Z3 .

    No
    REPAIR the circuit.
      Z3 CHECK THE A/C COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR A SHORT TO POWER  
    • Ignition ON.
    • Measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1110-1 VE462 (WH) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to Z4 .
      Z4 CHECK THE A/C COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • For 3.5L Ti-VCT engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1110-1 VE462 (WH) C175B-1 VE462 (WH/BN)



    • For 3.5L GTDI engine, measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1110-1 VE462 (WH) C1381B-41 VE462 (WH/BN)



    • Is the resistance less than 3 ohms?
    		Yes
    INSTALL a new A/C compressor, REFER to Section 412-01 . CLEAR the DTC and REPEAT the self-test. If the DTC returns, GO to Z5 .

    No
    REPAIR the circuit.
      Z5 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all PCM 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 all PCM connectors. Make sure they seat and latch correctly.
    • 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 PCM. REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test AA: DTC U0140:00

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    U0140:00 Lost Communication With Body Control Module: No Sub-Type Information This CMDTC sets in the HVAC module if data messages received from the BCM over the HS-CAN are missing for 5 seconds or more. For a complete list of all network messages, refer to Section 418-00 .

     
    PINPOINT TEST AA: DTC U0140:00
    Test Step Result / Action to Take
      AA1 VERIFY THE CUSTOMER CONCERN  
    • Ignition ON.
    • Verify there is an observable symptom present.
    • Is an observable symptom present?
    		Yes
    GO to AA2 .

    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.
      AA2 CHECK THE COMMUNICATION NETWORK  
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Network Test.
    • Using a scan tool, perform the network test.
    • Does the BCM pass the network test?
    		Yes
    GO to AA3 .

    No
    REFER to Section 418-00 .
      AA3 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST  
    • Enter the following diagnostic mode on the scan tool: Self-Test — BCM .
    • Check for recorded DTCs from the BCM self-test.
    • Is DTC U3003:16 or DTC U3003:17 recorded?
    		Yes
    REFER to Section 419-10 DTC Chart: Body Control Module (BCM).

    No
    GO to AA4 .
      AA4 RETRIEVE THE RECORDED DTCs FROM THE HVAC MODULE SELF-TEST  
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Check for recorded DTCs from the HVAC module self-test.
    • Is DTC U3003:16 or DTC U3003:17 recorded?
    		Yes
    GO to Pinpoint Test g .

    No
    GO to AA5 .
      AA5 RECHECK THE HVAC MODULE DTCs  

      NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during the PMI or the PMI may not have been carried out.

    • Clear the DTCs.
    • Wait 10 seconds.
    • Enter the following diagnostic mode on the scan tool: Self-Test — HVAC Module.
    • Using a scan tool, repeat the HVAC module self-test.
    • Is DTC U0140:00 still present?
    		Yes
    If the vehicle is equipped with a DSM , GO to AA6 . Otherwise, GO to AA7 .

    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.
      AA6 CHECK FOR DTC U0140:00 SET IN OTHER MODULES  
    • Clear all DTCs.
    • Ignition OFF.
    • Ignition ON.
    • Wait 10 seconds.
    • Using a scan tool, perform a self-test.
    • Retrieve the continuous memory DTCs from all modules.
    • Is DTC U0140:00 set in the DSM ?
    		Yes
    GO to AA7 .

    No
    GO to AA8 .
      AA7 CHECK FOR CORRECT BCM OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all the BCM 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
    • Reconnect the BCM connectors. Make sure they seat and latch correctly.
    • 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 BCM . REFER to Section 419-10 Body Control Module (BCM) - with Intelligent Access (IA) or REFER to Body Control Module (BCM) - without Intelligent Access (IA).

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      AA8 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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
    • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test AB: DTCs B1A61:15, B1A63:15 and B1A64:15

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 54 , Manual Climate Control System for schematic and connector information.

    Refer to Wiring Diagrams Cell 55 , Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions

    The in-vehicle temperature/humidity sensor receives a ground from the HVAC module. The sensor varies its resistance with the temperature. As the temperature rises, the resistance falls. As the temperature falls the resistance rises. The HVAC module measures this resistance to determine the temperature at the sensor. The autolamp/sunload sensor is grounded. As the light applied to the sensor changes, the HVAC module detects the change through the RH and LH feedback circuits.

    The HVAC module internally ties the in-vehicle temperature/humidity sensor and the LH and RH autolamp/sunload sensor feedback short to voltage diagnostics together. In the event any of the 3 feedback circuits are shorted to voltage all three DTCs set.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    B1A61:15 Cabin Temperature Sensor: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses greater than expected voltage on the sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.
    B1A63:15 Right Solar Sensor: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses greater than expected voltage on the RH sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.
    B1A64:15 Left Solar Sensor: Circuit Short to Battery or Open This CMDTC sets when the HVAC module senses greater than expected voltage on the LH sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.

     
    PINPOINT TEST AB: DTCs B1A61:15, B1A63:15 AND B1A64:15
    Test Step Result / Action to Take
      AB1 CHECK THE IN-VEHICLE TEMPERATURE/HUMIDITY SENSOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: HVAC Module — DATC C228A.
    • Disconnect: HVAC Module — DATC C228B.
    • Disconnect: HVAC Module — EMTC C2357A.
    • Disconnect: HVAC Module — EMTC C2357B.
    • Disconnect: In-Vehicle Temperature/Humidity Sensor.
    • Disconnect: Autolamp/Sunload Sensor.
    • Ignition ON.
    • For DATC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C228B-22 VH417 (YE/OG) — Ground
      C228B-23 VH416 (VT/GY) — Ground
      C228B-29 VH414 (GN/BU) — Ground



    • For EMTC , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C2357B-22 VH417 (YE/OG) — Ground
      C2357B-23 VH416 (VT/GY) — Ground
      C2357B-29 VH414 (GN/BU) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit in question.

    No
    GO to AB2 .
      AB2 CHECK FOR CORRECT HVAC MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all 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
    • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
    • 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 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Component Tests

     

    Air Inlet Door Actuator



    Actuator Pins Approx. Resistance
    5 and 6 55-69 ohms

     

    Blend Door Actuator — DATC



    Actuator Pins Approx. Resistance
    1 and 3 3,040-4,560 ohms
    1 and 2 120-4,380 ohms
    2 and 3 120-4,380 ohms
    5 and 6 81-97 ohms

     

    Blend Door Actuator — EMTC



    Actuator Pins Approx. Resistance
    1 and 3 3,040-4,560 ohms
    1 and 2 120-4,380 ohms
    2 and 3 120-4,380 ohms
    5 and 6 55-68 ohms

     

    Defrost/Panel/Floor Mode Door Actuator



    Actuator Pins Approx. Resistance
    2 and 3 2,775-4,625 ohms
    2 and 4 188-4,313 ohms
    3 and 4 188-4,313 ohms
    1 and 6 43-56 ohms

     

    Evaporator Temperature Sensor



    Ambient Temperature Approximate Resistance
    -20°C (-4°F) 276,959ohms
    -5°C (23°F) 123,458 ohms
    0°C (32°F) 95,851 ohms
    5°C (41°F) 74,940 ohms
    10°C (50°F) 59,016 ohms
    15°C (59°F) 46,797 ohms
    20°C (68°F) 37,340 ohms
    25°C (77°F) 30,000 ohms
    40°C (104°F) 16,113 ohms
    60°C (140°F) 7,548 ohms
    100°C (212°F) 2,080 ohms
    120°C (248°F) 1,191 ohms

     

    In-Vehicle Temperature/Humidity Sensor



    Pins Ambient Temperature Approximate Resistance
    Component side pin 2 to 5 -40°C (-40°F) 901,490 ohms
      -15°C (5°F) 208,450 ohms
      0°C (32°F) 95,560 ohms
      15°C (59°F) 46,750 ohms
      25°C (77°F) 30,000 ohms
      35°C (95°F) 19,720 ohms
      60°C (140°F) 7,592 ohms
      85°C (185°F) 3,286 ohms

     

    Auxiliary Temperature Door Actuator



    Actuator Pins Approx. Resistance
    1 and 3 3,700-5,700 ohms
    1 and 2 150-5,700 ohms
    2 and 3 150-5,700 ohms
    5 and 6 28-44 ohms

     

    Auxiliary Mode Door Actuator



    Actuator Pins Approx. Resistance
    1 and 3 3,700-5,700 ohms
    1 and 2 150-5,700 ohms
    2 and 3 150-5,700 ohms
    5 and 6 28-44 ohms

     

    Heater Core

    1. NOTE: Testing of returned heater cores reveals that a large percentage of heater cores are good and did not require the installation of a new heater core. If a heater core leak is suspected, the heater core must be tested by following the plugged heater core component test before the heater core pressure test. Carry out a system inspection by checking the heater system thoroughly as follows:

      Inspect for evidence of coolant leakage at the heater hose to heater core attachments. A coolant leak in the heater hose could follow the heater core tube to the heater core and appear as a leak in the heater core.

    1. NOTE: Spring-type clamps are installed as original equipment. Installation and overtightening of non-specified clamps can cause leakage at the heater hose connection and damage the heater core.

      Check the integrity of the heater hose clamps.
     

    Heater Core — Plugged

    1. Verify the engine coolant is at the correct level.
    1. Start the engine and turn on the heater.
    1. When the engine coolant reaches operating temperature, check the heater core inlet and outlet hoses to see if they are hot.
    1. If the outlet only is not hot:
    1. If the inlet only is not hot:
     

    Heater Core — Pressure Test

    Use the Pressure Test Kit to carry out the pressure test.

    1. NOTE: Due to space limitations, a bench test may be necessary for pressure testing.

      Drain the coolant from the cooling system.
    1. Disconnect the heater hoses from the heater core.
    1. Install a short piece of heater hose, approximately 101 mm (4 in) long on each heater core tube.
    1. Fill the heater core and heater hoses with water and install the plug BT-7422-B and the adapter BT-7422-A from the Pressure Test Kit. Secure the heater hoses, plug and adapter with hose clamps.
    1. Attach the pump and gauge assembly from the Pressure Test Kit to the adapter.
    1. Close the bleed valve at the base of the gauge. Pump 138 kPa (20 psi) of air pressure into the heater core.
    1. Observe the pressure gauge for a minimum of 3 minutes.
    1. If the pressure drops, check the heater hose connections to the core tubes for leaks. If the heater hoses do not leak, remove the heater core from the vehicle and carry out the bench test.
     

    Heater Core — Bench Test

    1. Remove the heater core from the vehicle.
    1. Drain all of the coolant from the heater core.
    1. Connect the 101 mm (4 in) test heater hoses with plug and adapter to the core tubes. Then connect the Pressure Test Kit to the adapter.
    1. Apply 138 kPa (20 psi) of air pressure to the heater core. Submerge the heater core in water.
    1. If a leak is observed, install a new heater core.
     

    Evaporator/Condenser Core — On-Vehicle Leak Test

    1. Discharge and recover the refrigerant. Refer to Air Conditioning (A/C) System Recovery, Evacuation and Charging in this section.
    1. Disconnect the suspect evaporator or condenser core from the A/C system.
    1. Clean the manifold fittings.
    1. Connect the appropriate test fittings from the A/C Flush Adapter Kit to the condenser or evaporator core tube connections.

    1. NOTE: The automatic shut-off valves on some gauge set hoses do not open when connected to the test fittings. If available, use hoses without shut-off valves. If hoses with shut-off valves are used, make sure the valve opens when attached to the test fittings or install an adapter that activates the valve. The test is not valid if the shut-off valve does not open.

      Connect the red and blue hoses from the R-134a Manifold Gauge Set to the test fittings on the evaporator or condenser core. Connect the yellow hose to a known good vacuum pump.
    1. Open both gauge set valves and start the vacuum pump. Allow the vacuum pump to operate for a minimum of 45 minutes after the gauge set low pressure gauge indicates 101 kPa (30 in-Hg). The 45-minute evacuation is necessary to remove any refrigerant from oil left in the evaporator or condenser core. If the refrigerant is not completely removed from the oil, outgassing will degrade the vacuum and appear as a refrigerant leak.
    1. If the low pressure gauge reading will not drop to 101 kPa (30 in-Hg) when the valves on the gauge and manifold set are open and the vacuum pump is operating, close the gauge set valves and observe the low pressure gauge. If the pressure rises rapidly to zero, a large leak is indicated. Recheck the test fitting connections and gauge set connections before installing a new evaporator or condenser core.
    1. After evacuating for 45 minutes, close the gauge set valves and stop the vacuum pump. Observe the low pressure gauge; it should remain at the 101 kPa (30 in-Hg) mark.
    1. If the evaporator or condenser core does leak, as verified by the above procedure, install a new evaporator or condenser core.
     

    A/C Compressor — External Leak Test

    1. Install the adapter from the A/C Flush Adapter Kit on the port of the A/C compressor, using the existing manifold retaining bolt.
    1. Connect the high and low pressure lines of a manifold gauge set or a refrigerant recovery/recycling station to the corresponding fittings on the adapter.
    1. Attach the center hose of a manifold gauge set to a refrigerant container standing in an upright position.
    1. Open the low pressure gauge valve, the high pressure gauge valve and the valve on the refrigerant container to allow the refrigerant vapor to flow into the A/C compressor.
    1. Using the Refrigerant Leak Detector, check for leaks at the compressor shaft.
    1. If an external leak is found, install a new A/C compressor.
    1. When the leak test is complete, recover the refrigerant from the compressor.