2014 Flex Workshop Manual

SECTION 501-03: Body Closures	2014 Flex Workshop Manual
DIAGNOSIS AND TESTING	Procedure revision date: 05/02/2013

Power Liftgate

Special Tool(s)
	Circuit Tester/Test Light SGT27000
	Flex Probe Kit NUD105-R025D

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.

BCM DTC Chart

DTC	Description	Action
B12E8:11	Liftgate/Tailgate Control/Release Switch: Circuit Short To Ground	GO to Pinpoint Test B .
All other DTCs	—	REFER to Section 419-10 .

RFA Module DTC Chart

DTC	Description	Action
B113E:11	External Boot/Trunk Release Switch: Circuit Short To Ground	GO to Pinpoint Test B .
All other DTCs	—	REFER to Section 419-10 .

LTM DTC Chart

DTC	Description	Action
B107D	Obstacle Detected While Closing	GO to Pinpoint Test D .
B1105	Rear Open/Close Switch Active During Self Test	GO to Pinpoint Test B .
B1179	Latch Motor Circuit Short to Battery	GO to Pinpoint Test A .
B117A	Latch Motor Circuit Short to Ground	GO to Pinpoint Test A .
B117B	Latch Motor Circuit Open	GO to Pinpoint Test A .
B117C	Latch Centering Switch Invalid	GO to Pinpoint Test J .
B1317	Battery Voltage High	GO to Pinpoint Test N .
B1318	Battery Voltage Low	GO to Pinpoint Test O .
B1342	ECU Is Faulted	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 returns, INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .
B2019	Liftgate Exceeded Time Allowed to Cinch Door	GO to Pinpoint Test C .
B201A	Power System Disabled Due to High Manual Closing Speed	GO to Pinpoint Test H .
B236A	Chime Output Circuit Open	GO to Pinpoint Test I .
B2418	Sensor Power Short to Ground	GO to Pinpoint Test K .
B2419	Sensor 1 Invalid	GO to Pinpoint Test K .
B2420	Sensor 2 Invalid	GO to Pinpoint Test K .
B2552	Vbatt 2 Circuit Open	GO to Pinpoint Test A .
B2699	Left Pinch Strip Open or Short to Battery	GO to Pinpoint Test F .
B2700	Right Pinch Strip Open or Short to Battery	GO to Pinpoint Test F .
B2701	Left Pinch Strip Stuck Active	GO to Pinpoint Test F .
B2702	Right Pinch Strip Stuck Active	GO to Pinpoint Test F .
B2703	Open/Close Switch Stuck Active	GO to Pinpoint Test B .
B2718	Liftgate/Decklid Ajar Output Short to Battery	REFER to Section 417-02 .
B2721	Liftgate/Decklid Ajar Output Short to Ground or Open	REFER to Section 417-02 .
B2819	Gate Motor Circuit Short to Battery	GO to Pinpoint Test A .
B2903	Chime Output Circuit Short to Battery	GO to Pinpoint Test I .
B2908	Latch Switch Invalid	GO to Pinpoint Test L .
B2935	Drive Unit Failure	GO to Pinpoint Test M .
B2936	Gate Motor Open	GO to Pinpoint Test A .
B2937	Gate Motor Short to Ground	GO to Pinpoint Test A .
B2940	Chime Output Circuit Short to Ground	GO to Pinpoint Test I .
U0140	Lost Communication With Body Control Module (GEM)	GO to Pinpoint Test P .
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	GO to Pinpoint Test Q .
U2050	No Application Present	CLEAR the DTCs. REPEAT the self-test. If DTC U2050 returns, INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .
U2051	One or More Calibration Files Missing / Corrupt	CLEAR the DTCs. REPEAT the self-test. If DTC U2051 returns, INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .
U2471	Unexpected PRNDL State	VERIFY the transmission gear selector (PRNDL) is in PARK. CLEAR the DTCs. REPEAT the self-test. If DTC U2471 is retrieved again, RETRIEVE and FOLLOW non-network DTCs from the IPC module. REFER to Section 413-01 . If no DTCs are present, INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .
U2472	Unexpected Ignition State	VERIFY the ignition is ON. CLEAR the DTCs. REPEAT the self-test. If DTC U2472 is retrieved again, RETRIEVE and FOLLOW non-network DTCs from the BCM . REFER to Section 419-10 . If no DTCs are present, INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .
U2473	Unexpected Vehicle Speed (VSS)	CLEAR the DTCs. REPEAT the self-test. If DTC U2473 is retrieved again, RETRIEVE and FOLLOW non-network DTCs from the IPC . REFER to Section 413-01 . If no related DTCs, INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .

Symptom Chart

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.

Symptom Chart
Condition	Possible Sources	Action
The power liftgate is inoperative	Refer to the Diagnostic Routine	GO to Pinpoint Test A .
The power liftgate is inoperative from any power liftgate control switch	Refer to the Diagnostic Routine	GO to Pinpoint Test B .
The power liftgate does not operate from a Remote Keyless Entry (RKE) transmitter	Refer to the Diagnostic Routine	For vehicles not equipped with IA , REFER to Section 501-14A . For vehicles equipped with IA , REFER to Section 501-14B .
The power liftgate Intelligent Access (IA) feature is inoperative (if equipped)	Refer to the Diagnostic Routine	REFER to Section 501-14B to diagnose the liftgate IA feature.
The power liftgate stops in the secondary latch position	Refer to the Diagnostic Routine	GO to Pinpoint Test C .
The power liftgate stops during power open operation	The vehicle was started or taken out of park during a power open operation Mechanical binding	INITIALIZE the power liftgate. REFER to Power Liftgate Initialization . If the condition still exists, manually CLOSE the liftgate to the primary latch position. OPEN the liftgate, using the front power liftgate switch with the vehicle in PARK and the ignition ON. If mechanical binding does exist, REPAIR as necessary.
The power liftgate stops and chimes at the full open position	The power liftgate lost its full open position due to a mechanical repair (hinge adjustment, liftgate striker adjustment, motor or power liftgate rod assembly adjusted or repaired)	INITIALIZE the power liftgate. REFER to Power Liftgate Initialization .
The power liftgate reverses during the power close operation	Refer to the Diagnostic Routine	GO to Pinpoint Test D .
The power liftgate pinch strip does not stop or reverse the liftgate	Refer to the Diagnostic Routine	GO to Pinpoint Test E .
The power liftgate does not power close (power open OK)	Refer to the Diagnostic Routine	GO to Pinpoint Test F .
The power liftgate does not power open (power close OK)	Refer to the Diagnostic Routine	GO to Pinpoint Test G .
The power liftgate closes (with a continuous chime) immediately after a power open	Refer to the Diagnostic Routine	GO to Pinpoint Test H .
The power liftgate chime is inoperative	Refer to the Diagnostic Routine	GO to Pinpoint Test I .
The power liftgate has excessive noise during operation	Mechanical binding Liftgate alignment	TURN the power liftgate OFF (disable) from the message center and manually operate the liftgate. If mechanical binding does exist, REPAIR as necessary. If no mechanical binding is found, CHECK the liftgate alignment. REFER to Liftgate Alignment .

Pinpoint Tests

Pinpoint Test A: The Power Liftgate 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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Power Liftgate Latch in Body Closures .

Refer to Component Description - Power Liftgate Motor in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B1179	Latch Motor Circuit Short to Battery	Sets when the LTM detects a short to voltage from the latch motor circuit(s).
B117A	Latch Motor Circuit Short to Ground	Sets when the LTM detects a short to ground from the latch motor circuit(s).
B117B	Latch Motor Circuit Open	Sets when the LTM detects an open from the latch motor circuit(s). The LTM determines an open is present when it detects no current change upon latch motor activation.
B2552	Vbatt 2 Circuit Open	Sets when the LTM detects less than 4 volts from the high current voltage feed circuit and the logic voltage feed circuit is greater than 8 volts.
B2819	Gate Motor Circuit Short to Battery	Sets when the LTM detects a short to battery from a power liftgate motor circuit.
B2936	Gate Motor Open	Sets when the LTM detects an open from a power liftgate motor circuit. The LTM determines an open is present when it detects no current change upon liftgate motor activation.
B2937	Gate Motor Short to Ground	Sets when the LTM detects a short to ground from a power liftgate motor circuit.

Possible Sources

Fuse
Wiring, terminals or connectors
Power liftgate latch
Power liftgate motor
LTM

Visual Inspection and Diagnostic Pre-checks

Inspect the BJB fuse 7 (30A) and make sure it is OK.
Inspect the BCM fuse 8 (10A) and make sure it is OK.

PINPOINT TEST A: THE POWER LIFTGATE IS INOPERATIVE

Test Step

Result / Action to Take

A1 CHECK THE OPERATION OF ALL THE POWER LIFTGATE INPUTS

NOTE: Make sure the power liftgate is enabled in the vehicle message center.

Ignition ON.
Select PARK.
Unlock the doors using the door lock control switch.
Close the liftgate to the full closed position (manually if necessary).
Open and close the power liftgate using the front power liftgate switch (located on the instrument panel).
Open and close the power liftgate using a programmed RKE transmitter.
Open the power liftgate using the liftgate release switch.
Close the power liftgate using the rear power liftgate switch (located on the rear quarter trim panel).
Does the power liftgate power operate correctly from any input?

Yes
GO to Symptom Chart .

No
GO to A2 .

A2 RETRIEVE THE DTCs FROM THE LTM

Using a scan tool, perform the LTM self-test.
Are any LTM DTCs present?

Yes
For DTC B2552, GO to A3 . For DTC B1179, B117A, B117B, B2819, B2936, or B2937, GO to A7 . For all other DTCs, REFER to the DTC Chart in this section.

No
GO to A3 .

A3 CHECK THE LTM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.
Disconnect: LTM C4174A.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174A-9	SBP08 (VT/RD)	—	Ground
C4174A-4	SBB07 (WH/RD)	—	Ground

Are the voltages greater than 11 volts?

Yes
GO to A4 .

No
VERIFY fuse 8 (10A) or fuse 7 (30A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

A4 CHECK THE LTM GROUND CIRCUIT FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174A-1	GD349 (BK/GY)	—	Ground

Is the resistance less than 3 ohms?

Yes
GO to A5 .

No
REPAIR the circuit.

A5 CHECK THE DETENT AND FORKBOLT SWITCH PIDs

Connect: LTM C4174A.
Ignition ON.
Using a scan tool, view LTM PIDs.
Operate the liftgate manually while monitoring the following LTM PIDs:

Detent switch status (DETENTSW)

Forkbolt switch status (FORKBLT_S)

Forkbolt secondary switch (FKSWSEC)

NOTE: The liftgate is in the primary position when the liftgate is in the full closed position. The liftgate is in the unlatch position when the liftgate is open and completely out of the striker.
NOTE: If the detent switch is active in the fully unlatched position, manually attempt to rotate the forkbolt towards the latched position.
Begin with the liftgate in the open position, then slowly close the liftgate into each of the latch positions specified by the table below.

Liftgate Latch Position	DETENTSW	FORKBLT_S	FKSWSEC
Fully Unlatched	Inactive	Active	Active
Primary	Active	Inactive	Inactive

Do the switch states agree with the table?

Yes
GO to A6 .

No
GO to Pinpoint Test L .

A6 CHECK THE LIFTGATE POSITION SENSOR (OPT_SEN_1) AND (OPT_SEN_2) PIDs

Open the liftgate to the full open position.
Using a scan tool, monitor the LTM PIDs OPT_SEN_1 and OPT_SEN_2 while slowly closing the liftgate.
Do both of the PID values alternate from ACTIVE to INACTIVE while the liftgate is moving?

Yes
GO to A7 .

No
GO to Pinpoint Test K .

A7 CHECK THE MOTOR AND LATCH CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Disconnect: LTM C4174A.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174A-2	CPR61 (BN)	—	Ground
C4174A-3	CPR62 (WH/BU)	—	Ground
C4174A-5	CPR57 (GN/WH)	—	Ground
C4174A-6	CPR58 (GN/OG)	—	Ground

Ignition ON.
Is any voltage present?

Yes
REPAIR the circuit in question.

No
GO to A8 .

A8 CHECK THE MOTOR AND LATCH CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Disconnect: Power Liftgate Motor C4332.
Disconnect: Power Liftgate Latch C4339.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174A-2	CPR61 (BN)	—	Ground
C4174A-3	CPR62 (WH/BU)	—	Ground
C4174A-5	CPR57 (GN/WH)	—	Ground
C4174A-6	CPR58 (GN/OG)	—	Ground

Are the resistances greater than 10,000 ohms?

Yes
GO to A9 .

No
REPAIR the circuit in question.

A9 CHECK THE MOTOR AND LATCH CIRCUITS FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174A-2	CPR61 (BN)	C4339-5	CPR61 (BN)
C4174A-3	CPR62 (WH/BU)	C4339-7	CPR62 (WH/BU)
C4174A-5	CPR57 (GN/WH)	C4332-1	CPR57 (GN/WH)
C4174A-6	CPR58 (GN/OG)	C4332-4	CPR58 (GN/OG)

Are the resistances less than 3 ohms?

Yes
GO to A10 .

No
REPAIR the circuit in question.

A10 CHECK THE UNLATCH OPERATION

Connect: Power Liftgate Latch C4339.
Close and latch the liftgate.
Connect a fused jumper wire between:

Pin	Circuit	Pin	Circuit
C4174A-2	CPR61 (BN)	C4174A-1	GD349 (BK/GY)

NOTICE: Do not apply power to the unlatch actuator circuit for more than a few seconds or damage to the motor may occur.
Connect and then remove a fused jumper wire between:

Pin	Circuit	Pin	Circuit
C4174A-3	CPR62 (WH/BU)	C4174A-4	SBB07 (WH/RD)

Does the liftgate unlatch?

Yes
REMOVE the jumper wire. LEAVE the liftgate unlatched. GO to A11 .

No
REMOVE the jumper wire. INSTALL a new power liftgate latch. REFER to Section 501-14A or Section 501-14B .

A11 CHECK THE POWER LIFTGATE MOTOR OPERATION

Connect: Power Liftgate Motor C4332.
Raise the liftgate to its full open height.
Connect a fused jumper wire between:

Pin	Circuit	Pin	Circuit
C4174A-5	CPR57 (GN/WH)	C4174A-1	GD349 (BK/GY)

NOTICE: Do not apply power to the power liftgate motor circuit for more than a few seconds or damage to the motor may occur.
Connect and then remove a fused jumper wire between:

Pin	Circuit	Pin	Circuit
C4174A-6	CPR58 (GN/OG)	C4174A-4	SBB07 (WH/RD)

Does the power liftgate close with the jumper wires connected?

Yes
GO to A12 .

No
INSTALL a new power liftgate motor. REFER to Power Liftgate Motor .

A12 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM 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 On-Line Automotive Service Information System (OASIS) for any applicable . If a exists for this concern, DISCONTINUE this test and FOLLOW instructions. If no address this concern, INSTALL a new . REFER to Liftgate/Trunk Module (LTM) .

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: The Power Liftgate Is Inoperative From Any Power Liftgate Control Switch

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Front Power Liftgate Switch in Body Closures .

Refer to Component Description - Rear Power Liftgate Switch in Body Closures .

Refer to Component Description - Liftgate Release Switch in Body Closures .

Refer to Component Description - Liftgate/Trunk Module (LTM) in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B1105	Rear Open/Close Switch Active During Self Test	Sets when the LTM detects a short to ground from the rear power liftgate switch input circuit.
B2703	Open/Close Switch Stuck Active	Sets when the LTM detects a short to ground from the front power liftgate switch input circuit.

BCM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B12E8:11	Liftgate/Tailgate Control/Release Switch: Circuit Short To Ground	Sets when the BCM detects a short to ground from the liftgate release switch input circuit.

RFA Module DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B113E:11	External Boot/Trunk Release Switch: Circuit Short To Ground	Sets when the RFA module detects a short to ground from the liftgate release switch input circuit.

Possible Sources

Wiring, terminals or connectors
Front power liftgate switch
Rear power liftgate switch
Liftgate release switch
LTM

PINPOINT TEST B: THE POWER LIFTGATE IS INOPERATIVE FROM ANY POWER LIFTGATE CONTROL SWITCH

Test Step

Result / Action to Take

B1 CHECK THE OPERATION OF THE POWER LIFTGATE FROM ALL THE SWITCH INPUTS

NOTE: Make sure the power liftgate is enabled in the message center.

Ignition OFF.
Select PARK.
Unlock the doors from the door lock control switch.
Close the liftgate to the full closed position (manually if necessary).
Open and close the power liftgate using the front power liftgate switch (located on the instrument panel).
Open the power liftgate using the liftgate release switch.
Close the power liftgate using the rear power liftgate switch (located on the rear quarter trim panel).
Does the power liftgate operate correctly from any input?

Yes
GO to B2 .

No
GO to Pinpoint Test A .

B2 CHECK FOR LIFTGATE SWITCH DTCs FROM THE LTM

Ignition ON.
Using a scan tool, perform the LTM self-test.
Is DTC B1105 or DTC B2703 present?

Yes
GO to B3 .

No
If not equipped with , GO to B5 . If equipped with , GO to B8 .

B3 CHECK THE POWER LIFTGATE SWITCH FOR A SHORT TO GROUND

Ignition OFF.
Disconnect: Front Power Liftgate Switch C2269 (DTC B2703).
Disconnect: Rear Power Liftgate Switch C4216 (DTC B1105).
Ignition ON.
Using a scan tool, clear the DTCs and then perform the LTM self-test.
Is DTC B1105 or DTC B2703 still present?

Yes
GO to B4 .

No
INSTALL a new front or rear power liftgate switch in question.

B4 CHECK THE POWER LIFTGATE SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Disconnect: LTM C4174B.
For DTC B2703, measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-3	CPR63 (GY)	—	Ground

For DTC B1105, measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-11	CPR89 (BN/BU)	—	Ground

Is the resistance greater than 10,000 ohms?

Yes
GO to B16 .

No
REPAIR the circuit in question.

B5 CHECK FOR DTC B12E8:11 FROM THE BCM

Using a scan tool, perform the BCM self-test.
Is DTC B12E8:11 present?

Yes
GO to B6 .

No
GO to B11 .

B6 CHECK THE LIFTGATE RELEASE SWITCH FOR A SHORT TO GROUND (WITHOUT IA )

Ignition OFF.
Disconnect: Liftgate Release Switch C4353.
Ignition ON.
Using a scan tool, clear the DTCs and then perform the BCM self-test.
Is DTC B12E8:11 still present?

Yes
GO to B7 .

No
INSTALL a new liftgate release switch. REFER to Section 501-14A .

B7 CHECK THE LIFTGATE RELEASE SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND (WITHOUT IA )

Ignition OFF.
Disconnect: BCM C2280C.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4353-3	CPL45 (BN)	—	Ground

Is the resistance greater than 10,000 ohms?

Yes
GO to B15 .

No
REPAIR the circuit.

B8 CHECK FOR DTC B113E:11 FROM THE RFA MODULE

Using a scan tool, perform the RFA module self-test.
Is DTC B113E:11 present?

Yes
GO to B9 .

No
GO to B11 .

B9 CHECK THE LIFTGATE RELEASE SWITCH FOR A SHORT TO GROUND (WITH IA )

Ignition OFF.
Disconnect: Liftgate Release Switch C4353.
Ignition ON.
Using a scan tool, clear the DTCs and then perform the RFA module self-test.
Is DTC B113E:11 still present?

Yes
GO to B10 .

No
INSTALL a new liftgate release switch. REFER to Section 501-14B .

B10 CHECK THE LIFTGATE RELEASE SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND (WITH IA )

Ignition OFF.
Disconnect: RFA Module C2153B.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4353-3	CPL45 (BN)	—	Ground

Is the resistance greater than 10,000 ohms?

Yes
GO to B14 .

No
REPAIR the circuit.

B11 BYPASS THE SUSPECT SWITCH

Ignition OFF.
Disconnect: Suspect Liftgate Switch.
Unlock the doors using the door lock control switch.
For the front power liftgate switch, connect and then remove a fused jumper wire between:

Pin	Circuit	Pin	Circuit
C2269-6	CPR63 (GY)	C2269-2	GD375 (BK/BU)

NOTE: The rear switch only provides a power close function of the power liftgate. The liftgate must be open when performing this step.
For the rear power liftgate switch, connect and then remove a fused jumper wire between:

Pin	Circuit	Pin	Circuit
C4216-6	CPR89 (BN/BU)	C4216-2	GD349 (BK/GY)

For the liftgate release switch, connect and then remove a fused jumper wire between:

Pin	Circuit	Pin	Circuit
C4353-3	CPL45 (BN)	C4353-4	GD349 (BK/GY)

Does the power liftgate open or close?

Yes
INSTALL a new switch in question.

No
GO to B12 .

B12 CHECK THE POWER LIFTGATE SWITCH GROUND CIRCUIT FOR AN OPEN

For the front power liftgate switch, measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C2269-2	GD375 (BK/BU)	—	Ground

For the rear power liftgate switch, measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4216-2	GD349 (BK/GY)	—	Ground

For the liftgate release switch, measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4353-4	GD349 (BK/GY)	—	Ground

Is the resistances less than 3 ohms?

Yes
GO to B13 .

No
REPAIR the circuit.

B13 CHECK THE POWER LIFTGATE SWITCH INPUT CIRCUIT FOR AN OPEN

Disconnect: LTM C4174B (front or rear power liftgate switch).
Disconnect: BCM C2280C (liftgate release switch on vehicles without IA ).
Disconnect: RFA Module C2153B (liftgate release switch on vehicles with IA ).
For the front power liftgate switch, measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C2269-6	CPR63 (GY)	C4174B-3	CPR63 (GY/YE)

For the rear power liftgate switch, measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4216-6	CPR89 (BN/BU)	C4174B-11	CPR89 (BN/BU)

For the liftgate release switch on vehicles not equipped with IA , measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4353-3	CPL45 (BN)	C2280C-23	CPL45 (BN)

For the liftgate release switch on vehicles equipped with IA , measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4353-3	CPL45 (BN)	C2153B-4	CPL45 (BN)

Is the resistances less than 3 ohms?

Yes
For a front or rear liftgate switch, GO to B16 . For the liftgate release switch on vehicles not equipped with , GO to B15 . For the liftgate release switch on vehicles equipped with , GO to B14 .

No
REPAIR the circuit.

B14 CHECK FOR CORRECT RFA MODULE OPERATION

Disconnect and inspect all RFA 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 RFA 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 On-Line Automotive Service Information System (OASIS) for any applicable . If a exists for this concern, DISCONTINUE this test and FOLLOW instructions. If no address this concern, INSTALL a new module. REFER to Section 419-10 .

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.

B15 CHECK FOR CORRECT BCM OPERATION

Disconnect and inspect all 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 On-Line Automotive Service Information System (OASIS) for any applicable . If a exists for this concern, DISCONTINUE this test and FOLLOW instructions. If no address this concern, INSTALL a new . REFER to Section 419-10 .

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.

B16 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test C: The Power Liftgate Stops In The Secondary Latch Position

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

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Power Liftgate Latch in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B2019	Liftgate Exceeded Time Allowed to Cinch Door	Sets when the LTM detects the liftgate cinching sequence has been active for more than 5 seconds.

Possible Sources

Liftgate alignment
Liftgate striker alignment
Mechanical binding
LTM

PINPOINT TEST C: THE POWER LIFTGATE STOPS IN THE SECONDARY LATCH POSITION

Test Step

Result / Action to Take

C1 CHECK THE MANUAL OPERATION OF THE LIFTGATE

Ignition ON.
Disable the power liftgate feature from the message center. When disabled, the liftgate latch releases with a press of the liftgate release switch but the power liftgate function does not operate.
Ignition OFF.
While manually opening and closing the liftgate, check the liftgate for:

Liftgate/wedge alignment

Strut operation (struts should push liftgate open when beyond half open)

Power liftgate motor (should move freely while manually opening and closing liftgate and be securely mounted to the liftgate and bracket)

Power liftgate latch (should latch completely)

Does the liftgate open and close correctly?

Yes
GO to C2 .

No
REPAIR as necessary.

C2 CHECK THE LIFTGATE LATCH AND STRIKER ALIGNMENT

NOTE: Make sure to inspect the underside of the striker bridge for witness marks.

Inspect the striker and latch for correct alignment.
Is the latch and striker aligned correctly?

Yes
GO to C3 .

No
ALIGN the liftgate and striker. REFER to Liftgate Alignment .

C3 CHECK THE DETENT AND FORKBOLT SWITCH PIDs

Ignition ON.
Using a scan tool, view LTM PIDs.
Operate the liftgate manually while monitoring the following LTM PIDs:

Detent switch status (DETENTSW)

Forkbolt switch status (FORKBLT_S)

Forkbolt secondary switch (FKSWSEC)

NOTE: The liftgate is in the primary position when the liftgate is in the full closed position. The liftgate is in the unlatch position when the liftgate is open and completely out of the striker.
NOTE: If detent switch is active in the fully unlatched position, manually attempt to rotate the forkbolt towards the latched position.
Begin with the liftgate in the open position, then slowly close the liftgate into each of the latch positions specified by the table below.

Liftgate Latch Position	DETENTSW	FORKBLT_S	FKSWSEC
Fully Unlatched	Inactive	Active	Active
Primary	Active	Inactive	Inactive

Do the switch states agree with the table?

Yes
GO to C4 .

No
GO to Pinpoint Test L .

C4 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test D: The Power Liftgate Reverses During The Power Close Operation

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

Refer to System Operation - Power Liftgate in Body Closures .

Possible Sources

Liftgate alignment
Liftgate striker alignment
Mechanical binding
LTM

PINPOINT TEST D: THE POWER LIFTGATE REVERSES DURING THE POWER CLOSE OPERATION

Test Step

Result / Action to Take

D1 CHECK THE MANUAL OPERATION OF THE LIFTGATE

Ignition ON.
Disable the power liftgate feature from the message center. When disabled, the liftgate latch releases with a press of the liftgate release switch but the power liftgate function does not operate.
Ignition OFF.
While manually opening and closing the liftgate, check the liftgate for:

Liftgate/wedge alignment

Strut operation (struts should push liftgate open when beyond half open)

Power liftgate motor (should move freely while manually opening and closing liftgate and be securely mounted to the liftgate and bracket)

Power liftgate latch (should latch completely)

Does the liftgate open and close correctly?

Yes
GO to D2 .

No
REPAIR as necessary.

D2 CHECK THE LIFTGATE POSITION SENSOR (OPT_SEN_1) AND (OPT_SEN_2) PIDs

Ignition ON.
Open the liftgate to the full open position.
Using a scan tool, view LTM PIDs.
Monitor the LTM PIDs OPT_SEN_1 and OPT_SEN_2 while slowly closing the liftgate.
Do both of the PID values alternate from ACTIVE to INACTIVE while the liftgate is moving?

Yes
GO to D3 .

No
GO to Pinpoint Test K .

D3 CHECK THE DETENT AND FORKBOLT SWITCH PIDs

Using a scan tool, view LTM PIDs.
Operate the liftgate manually while monitoring the following LTM PIDs:

Detent switch status (DETENTSW)

Forkbolt switch status (FORKBLT_S)

Forkbolt secondary switch (FKSWSEC)

NOTE: The liftgate is in the primary position when the liftgate is in the full closed position. The liftgate is in the unlatch position when the liftgate is open and completely out of the striker.
NOTE: If detent switch is active in the fully unlatched position, manually attempt to rotate the forkbolt towards the latched position.
Begin with the liftgate in the open position, then slowly close the liftgate into each of the latch positions specified by the table below.

Liftgate Latch Position	DETENTSW	FORKBLT_S	FKSWSEC
Fully Unlatched	Inactive	Active	Active
Primary	Active	Inactive	Inactive

Do the switch states agree with the table?

Yes
GO to D4 .

No
GO to Pinpoint Test L .

D4 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test E: The Power Liftgate Pinch Strip Does Not Stop Or Reverse The Liftgate

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

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Pinch Switch Strip in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B107D	Obstacle Detected While Closing	Sets when the LTM detects an obstacle during a power close.

Possible Sources

Pinch strip switch
LTM

Visual Inspection and Diagnostic Pre-checks

Inspect the pinch strip switches for damage.

PINPOINT TEST E: THE POWER LIFTGATE PINCH STRIP DOES NOT STOP OR REVERSE THE LIFTGATE

Test Step	Result / Action to Take
E1 CHECK FOR PINCH STRIP RELATED DTCs FROM THE LTM
Ignition ON. Using a scan tool, perform the LTM self-test. Is DTC B2699, B2700, B2701 or B2702 present?	Yes GO to Pinpoint Test F . No GO to E2 .
E2 CHECK THE LIFTGATE LEFT/RIGHT PINCH STRIP INPUT
Using a scan tool, view LTM PIDs. Monitor the LTM PIDs LFT_PINCH and RT_PINCH while activating the left and right pinch strip. Do the PIDs state change/agree with the pinch strip status?	Yes GO to E3 . No INSTALL a new pinch strip switch in question. REFER to Pinch Strip Switch .
E3 CHECK FOR CORRECT LTM OPERATION
Disconnect and inspect all LTM 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 LTM 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 On-Line Automotive Service Information System (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 LTM . REFER to Liftgate/Trunk Module (LTM) . 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: The Power Liftgate Does Not Power Close (Power Open OK)

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Pinch Strip Switch in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B2699	Left Pinch Strip Open or Short to Battery	Sets when the LTM detects more than 3.7 volts from the left pinch strip input circuit.
B2700	Right Pinch Strip Open or Short to Battery	Sets when the LTM detects more than 3.7 volts from the right pinch strip input circuit.
B2701	Left Pinch Strip Stuck Active	Sets when the LTM detects less than 0.5 volt from the left pinch strip input circuit.
B2702	Right Pinch Strip Stuck Active	Sets when the LTM detects than 0.5 volt from the right pinch strip input circuit.

Possible Sources

Wiring, terminals or connectors
Liftgate alignment
Liftgate striker alignment
Mechanical binding
Pinch strip switch
LTM

Visual Inspection and Diagnostic Pre-checks

Inspect the pinch strip switches for damage.

PINPOINT TEST F: THE POWER LIFTGATE DOES NOT POWER CLOSE (POWER OPEN OK)

Test Step

Result / Action to Take

F1 CHECK THE MANUAL OPERATION OF THE LIFTGATE

Ignition ON.
Disable the power liftgate feature from the message center. When disabled, the liftgate latch releases with a press of the liftgate release switch but the power liftgate function does not operate.
Ignition OFF.
While manually opening and closing the liftgate, check the liftgate for:

Liftgate/wedge alignment

Strut operation (struts should push liftgate open when beyond half open)

Power liftgate motor (should move freely while manually opening and closing liftgate and be securely mounted to the liftgate and bracket)

Power liftgate latch (should latch completely)

Does the liftgate open and close correctly?

Yes
GO to F2 .

No
REPAIR or ALIGN as necessary. REFER to Liftgate Alignment .

F2 CHECK THE LIFTGATE PINCH STRIP INPUT TO THE LTM

Ignition ON.
Using a scan tool, view LTM PIDs.
Monitor the LTM LFT_PINCH and RT_PINCH PIDs while activating the left and right pinch strips.
Do the PIDs states change/agree with the pinch strip status?

Yes
GO to F11 .

No
GO to F3 .

F3 CHECK FOR A VOLTAGE SIGNAL TO THE SUSPECT PINCH STRIP SWITCH

Ignition OFF.
Disconnect: Suspect Punch Strip Switch.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-1 (left)	CPR52 (YE/VT)	—	Ground
C4173-1 (right)	CPR51 (YE/OG)	—	Ground

Is the voltage approximately 5 volts?

Yes
GO to F7 .

No
GO to F4 .

F4 CHECK THE PINCH STRIP SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Disconnect: LTM C4174B.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-1 (left)	CPR52 (YE/VT)	—	Ground
C4173-1 (right)	CPR51 (YE/OG)	—	Ground

Is any voltage present?

Yes
REPAIR the circuit.

No
GO to F5 .

F5 CHECK THE PINCH STRIP SIGNAL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-1 (left)	CPR52 (YE/VT)	—	Ground
C4173-1 (right)	CPR51 (YE/OG)	—	Ground

Is the resistance greater than 10,000 ohms?

Yes
GO to F6 .

No
REPAIR the circuit.

F6 CHECK THE PINCH STRIP SIGNAL CIRCUIT FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-1 (left)	CPR52 (YE/VT)	C4174B-12	CPR52 (YE/VT)
C4173-1 (right)	CPR51 (YE/OG)	C4174B-14	CPR51 (YE/OG)

Is the resistance less than 3 ohms?

Yes
GO to F12 .

No
REPAIR the circuit.

F7 CHECK THE SUSPECT PINCH STRIP RESISTANCE

While firmly compressing and releasing the suspect pinch strip, measure the component side resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-1 (left)	—	C4172-2	—
C4173-1 (right)	—	C4173-2	—

Is the pinch strip resistance 0 - 200 ohms with the pinch strip firmly compressed and 5,700 - 6,700 ohms with the pinch released?

Yes
GO to F8 .

No
INSTALL a new pinch strip switch in question. REFER to Pinch Strip Switch .

F8 CHECK THE PINCH STRIP RETURN CIRCUIT

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-1 (left)	CPR52 (YE/VT)	C4172-2	RPR52 (VT/GY)
C4173-1 (right)	CPR51 (YE/OG)	C4173-2	RPR52 (VT/GY)

Is the voltage approximately 5 volts?

Yes
INSTALL a new pinch strip switch in question. REFER to Pinch Strip Switch .

No
GO to F9 .

F9 CHECK THE PINCH STRIP RETURN CIRCUIT FOR SHORT TO VOLTAGE

Ignition OFF.
Disconnect: LTM C4174B.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-2 (left)	RPR52 (VT/GY)	—	Ground
C4173-2 (right)	RPR52 (VT/GY)	—	Ground

Is any voltage present?

Yes
GO to F10 .

No
REPAIR the circuit.

F10 CHECK THE PINCH STRIP RETURN CIRCUIT FOR AN OPEN

Ignition OFF.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4172-2 (left)	RPR52 (VT/GY)	C4174B-21	RPR52 (VT/GY)
C4173-2 (right)	RPR52 (VT/GY)	C4174B-21	RPR52 (VT/GY)

Is the resistances less than 3 ohms?

Yes
GO to F12 .

No
REPAIR the circuit.

F11 CHECK THE DETENT AND FORKBOLT SWITCH PIDs

Using a scan tool, view LTM PIDs.
Operate the liftgate manually while monitoring the following LTM PIDs:

Detent switch status (DETENTSW)

Forkbolt switch status (FORKBLT_S)

Forkbolt secondary switch (FKSWSEC)

NOTE: The liftgate is in the primary position when the liftgate is in the full closed position. The liftgate is in the unlatch position when the liftgate is open and completely out of the striker.
NOTE: If detent switch is active in the fully unlatched position, manually attempt to rotate the forkbolt towards the latched position.
Begin with the liftgate in the open position, then slowly close the liftgate into each of the latch positions specified by the table below.

Liftgate Latch Position	DETENTSW	FORKBLT_S	FKSWSEC
Fully Unlatched	Inactive	Active	Active
Primary	Active	Inactive	Inactive

Do the switch states agree with the table?

Yes
GO to F12 .

No
GO to Pinpoint Test L .

F12 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test G: The Power Liftgate Does Not Power Open (Power Close OK)

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

Refer to System Operation - Power Liftgate in Body Closures .

Possible Sources

Liftgate alignment
Liftgate striker alignment
Mechanical binding

PINPOINT TEST G: THE POWER LIFTGATE DOES NOT POWER OPEN (POWER CLOSE OK)

Test Step	Result / Action to Take
G1 RETRIEVE THE DTCs FROM THE LTM
Ignition ON. Using a scan tool, perform the LTM self-test. Are any LTM DTCs present?	Yes REFER to the LTM DTC Chart in this section. No GO to G2 .
G2 CHECK THE MANUAL UNLATCH OPERATION OF THE LIFTGATE
Disable the power liftgate feature from the message center. When disabled, the liftgate latch releases with a press of the liftgate release switch but the power liftgate function does not operate. Ignition OFF. NOTE: A small amount of interference during a manual operation is amplified during a power operation and may cause the liftgate not to power open. Manually unlatch the liftgate. Refer to Section 501-14A . Does the liftgate unlatch correctly?	Yes GO to G3 . No INSTALL a new power liftgate latch. REFER to Section 501-14A .
G3 CHECK THE MANUAL OPERATION OF THE LIFTGATE
While manually opening and closing the liftgate, check the liftgate for: Liftgate/wedge alignment Strut operation (struts should push liftgate open when beyond half open) Power liftgate motor (should move freely while manually opening and closing liftgate and be securely mounted to the liftgate and bracket) Power liftgate latch (should latch completely) Does the liftgate open and close correctly?	Yes GO to G4 . No REPAIR or ALIGN as necessary. REFER to Liftgate Alignment .
G4 CHECK THE LIFTGATE LATCH AND STRIKER ALIGNMENT
NOTE: Make sure to inspect the underside of the striker bridge for witness marks. Inspect the striker and latch for correct alignment. Is the latch and striker aligned correctly?	Yes GO to Pinpoint Test A . No ALIGN the liftgate and striker. REFER to Liftgate Alignment .

Pinpoint Test H: The Power Liftgate Closes (With A Continuous Chime) Immediately After A Power Open

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B201A	Power System Disabled Due to High Manual Closing Speed	Sets when the LTM detects excessive closing movement on 11 successive power open requests. When DTC B201A sets, power liftgate operation is disabled until the DTC is cleared.

Possible Sources

Excessive weight on the liftgate, such as snow, ice or a bicycle rack
Liftgate assist cylinder
Power liftgate initialization

PINPOINT TEST H: THE POWER LIFTGATE CLOSES (WITH A CONTINUOUS CHIME) IMMEDIATELY AFTER A POWER OPEN

Test Step	Result / Action to Take
H1 CHECK THE LIFTGATE ASSIST CYLINDERS
Verify there is no excessive weight on the liftgate, such as snow, ice or a bicycle rack. Operate the liftgate manually to verify the liftgate assist cylinders hold the liftgate open in various positions. Do the liftgate assist cylinders hold the liftgate open correctly?	Yes GO to H2 . No INSTALL new liftgate assist cylinders. CLEAR the DTCs. INITIALIZE the power liftgate. REFER to Power Liftgate Initialization .
H2 CHECK FOR LIFTGATE SWITCH DTCs FROM THE LTM
Ignition ON. Using a scan tool, clear the LTM DTCs. Initialize the power liftgate. Refer to Power Liftgate Initialization . Operate the power liftgate using the front power liftgate switch. Does the liftgate close with a continuous chime immediately after a power open?	Yes INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) . No The system is operating normal at this time. The concern may have been caused by an incorrectly initialized power liftgate or previous weight on the liftgate.

Pinpoint Test I: The Power Liftgate Chime 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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B236A	Chime Output Circuit Open	Sets when the LTM detects greater than 2.26 volts from the chime circuits when the chime is not activate.
B2903	Chime Output Circuit Short to Battery	Sets when the LTM detects greater than 2.34 volts from the chime circuits when the chime is not activate.
B2940	Chime Output Circuit Short to Ground	Sets when the LTM detects less than 0.82 volt from the chime circuits when the chime is activate.

Possible Sources

Wiring, terminals or connectors
Power liftgate chime (part of the power liftgate motor)
LTM

PINPOINT TEST I: THE POWER LIFTGATE CHIME IS INOPERATIVE

Test Step

Result / Action to Take

I1 CHECK THE POWER LIFTGATE CHIME CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Disconnect: LTM C4174B.
Disconnect: Power Liftgate Chime C4186.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-22	CPR56 (VT/BN)	—	Ground
C4174B-9	RPR56 (GY/VT)	—	Ground

Is any voltage present?

Yes
REPAIR the circuit in question.

No
GO to I2 .

I2 CHECK THE POWER LIFTGATE CHIME CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-22	CPR56 (VT/BN)	—	Ground
C4174B-9	RPR56 (GY/VT)	—	Ground

Are the resistances greater than 10,000 ohms?

Yes
GO to I3 .

No
REPAIR the circuit in question.

I3 CHECK THE POWER LIFTGATE CHIME CIRCUITS FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4186-2	CPR56 (VT/BN)	C4174B-22	CPR56 (VT/BN)
C4186-1	RPR56 (GY/VT)	C4174B-9	RPR56 (GY/VT)

Are the resistances less than 3 ohms?

Yes
INSTALL a new power liftgate motor. REFER to Power Liftgate Motor . TEST the system for normal operation. If the concern is still present, GO to I4 .

No
REPAIR the circuit in question.

I4 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test J: DTC B117C

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Power Liftgate Latch in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B117C	Latch Centering Switch Invalid	Sets when the LTM detects the sector gear open/close switch(es) are not in the correct state at the beginning of self-test, or no sector gear switch transition during releasing/cinching.

Possible Sources

Wiring, terminals or connectors
Power liftgate latch
LTM

PINPOINT TEST J: DTC B117C

Test Step

Result / Action to Take

J1 RETRIEVE THE DTCs FROM THE LTM

Ignition ON.
Using a scan tool, perform the LTM self-test.
Is DTC B117C the only DTC present?

Yes
GO to J2 .

No
DIAGNOSE all other DTCs first. REFER to the DTC Chart in this section.

J2 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR VOLTAGE

Ignition OFF.
Disconnect: Power Liftgate Latch C4339.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4339-6	CPR67 (VT)	—	Ground
C4339-4	CPR68 (YE)	—	Ground

Are the voltages greater than 11 volts?

Yes
INSTALL a new power liftgate latch. REFER to Section 501-14A . CLEAR the DTCs. REPEAT the self-test. If DTC B117C returns, GO to J5 .

No
GO to J3 .

J3 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Disconnect: LTM C4174B.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4339-6	CPR67 (VT)	—	Ground
C4339-4	CPR68 (YE)	—	Ground

Are the resistances greater than 10,000 ohms?

Yes
GO to J4 .

No
REPAIR the circuit in question.

J4 CHECK THE POWER LIFTGATE CHIME CIRCUITS FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-13	CPR67 (VT)	C4339-6	CPR67 (VT)
C4174B-2	CPR68 (YE)	C4339-4	CPR68 (YE)

Are the resistances less than 3 ohms?

Yes
INSTALL a new power liftgate latch. REFER to Section 501-14A . CLEAR the DTCs. REPEAT the self-test. If DTC B117C returns, GO to J5 .

No
REPAIR the circuit in question.

J5 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test K: DTC B2418, B2419 Or B2420

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Power Liftgate Motor in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B2418	Sensor Power Short to Ground	Sets when the LTM detects less than 5 volts from the position sensor power circuit.
B2419	Sensor 1 Invalid	Sets when the LTM detects the position sensor feedback signals are not correct.
B2420	Sensor 2 Invalid	Sets when the LTM detects the position sensor feedback signals are not correct.

Possible Sources

Wiring, terminals or connectors
Power liftgate motor
LTM

PINPOINT TEST K: DTC B2418, B2419 OR B2420

Test Step

Result / Action to Take

K1 CHECK FOR VOLTAGE TO THE POSITION SENSOR

Ignition OFF.
Disconnect: Power Liftgate Motor C4332.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4332-2	CPR55 (GN)	C4332-3	RPR55 (WH)

Is the voltage approximately 5 volts?

Yes
GO to K6 .

No
GO to K2 .

K2 CHECK THE POSITION SENSOR VOLTAGE CIRCUIT

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4332-2	CPR55 (GN)	—	Ground

Is the voltage approximately 5 volts?

Yes
GO to K5 .

No
GO to K3 .

K3 CHECK THE POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Disconnect: LTM C4174B.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4332-2	CPR55 (GN)	—	Ground

Is the resistance greater than 10,000 ohms?

Yes
GO to K4 .

No
REPAIR the circuit.

K4 CHECK THE POSITION SENSOR VOLTAGE CIRCUIT FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-19	CPR55 (GN)	C4332-2	CPR55 (GN)

Is the resistance less than 3 ohms?

Yes
GO to K10 .

No
REPAIR the circuit.

K5 CHECK THE POSITION SENSOR RETURN CIRCUIT FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-20	RPR55 (WH)	C4332-3	RPR55 (WH)

Is the resistance less than 3 ohms?

Yes
GO to K10 .

No
REPAIR the circuit.

K6 CHECK THE POSITION SENSOR CIRCUITS FOR REFERENCE VOLTAGE

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4332-5	VPR53 (BU)	—	Ground
C4332-6	VPR54 (BN)	—	Ground

Are the voltages approximately 5 volts?

Yes
INSTALL a new power liftgate motor. REFER to Power Liftgate Motor .

No
GO to K7 .

K7 CHECK THE POSITION SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Disconnect: LTM C4174B.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4332-5	VPR53 (BU)	—	Ground
C4332-6	VPR54 (BN)	—	Ground

Is any voltage present?

Yes
REPAIR the circuit in question.

No
GO to K8 .

K8 CHECK THE POSITION SENSOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4332-5	VPR53 (BU)	—	Ground
C4332-6	VPR54 (BN)	—	Ground

Is the resistance greater than 10,000 ohms?

Yes
GO to K9 .

No
REPAIR the circuit in question.

K9 CHECK THE POSITION SENSOR CIRCUITS FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-7	VPR53 (BU)	C4332-5	VPR53 (BU)
C4174B-8	VPR54 (BN)	C4332-6	VPR54 (BN)

Is the resistance less than 3 ohms?

Yes
GO to K10 .

No
REPAIR the circuit in question.

K10 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test L: DTC B2908

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Power Liftgate Latch in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B2908	Latch Switch Invalid	Sets when the LTM detects the liftgate is not in the fully latched (primary) position at the beginning of self-test. This DTC may also set if the LTM does not detect a change in the latch status during latch releasing/cinching.

Possible Sources

Wiring, terminals or connectors
Power liftgate latch
LTM

PINPOINT TEST L: DTC B2908

Test Step

Result / Action to Take

L1 CHECK THE OPERATION OF THE DETENT AND FORKBOLT SWITCHES

Ignition OFF.
Disconnect: LTM C4174B.
Open the liftgate. If necessary, refer to Liftgate Latch Manual Release in Section 501-14A .
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-16	CPR66 (GY/YE)	—	Ground
C4174B-17	CPR65 (BU/GN)	—	Ground
C4174B-18	CPR64 (VT/OG)	—	Ground

Record the test results.
Using a suitable tool, such as a screwdriver, fully latch the liftgate latch (2 audible clicks should be heard when performing this).
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-16	CPR66 (GY/YE)	—	Ground
C4174B-17	CPR65 (BU/GN)	—	Ground
C4174B-18	CPR64 (VT/OG)	—	Ground

Record the test results.
Compare the results with the table below.

Circuit	Resistance With Liftgate Latch Fully Unlatched	Resistance With Liftgate Latch Fully Latched
CPR66 (GY/YE)	Greater than 10,000 ohms	Less than 5 ohms
CPR65 (BU/GN)	Less than 5 ohms	Greater than 10,000 ohms
CPR64 (VT/OG)	Less than 5 ohms	Greater than 10,000 ohms

Do the resistance values agree with the table?

Yes
GO to L5 .

No
GO to L2 .

L2 CHECK THE LIFTGATE LATCH GROUND CIRCUIT

Disconnect: Liftgate Latch C4339.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4339-8	GD349 (BK/GY)	—	Ground

Is the resistance less than 3 ohms?

Yes
GO to L3 .

No
REPAIR the circuit.

L3 CHECK THE DETENT AND FORKBOLT SWITCH CIRCUITS FOR A SHORT TO GROUND

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-16	CPR66 (GY/YE)	—	Ground
C4174B-17	CPR65 (BU/GN)	—	Ground
C4174B-18	CPR64 (VT/OG)	—	Ground

Are the resistances greater than 10,000 ohms?

Yes
GO to L4 .

No
REPAIR the circuit in question.

L4 CHECK THE DETENT AND FORKBOLT SWITCH CIRCUITS FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174B-16	CPR66 (GY/YE)	C4339-2	CPR66 (GY/YE)
C4174B-17	CPR65 (BU/GN)	C4339-3	CPR65 (BU/GN)
C4174B-18	CPR64 (VT/OG)	C4339-1	CPR64 (VT/OG)

Are the resistances less than 3 ohms?

Yes
INSTALL a new liftgate latch. REFER to Section 501-14A .

No
REPAIR the circuit in question.

L5 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test M: DTC B2935

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

Refer to System Operation - Power Liftgate in Body Closures .

Refer to Component Description - Power Liftgate Latch in Body Closures .

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B2935	Drive Unit Failure	Sets when the LTM self-test cycle (power open and power close to fully latched position) exceeds 20 seconds.

Possible Sources

Liftgate alignment
Liftgate hinges
Liftgate striker alignment
Power liftgate latch
Power liftgate motor

PINPOINT TEST M: DTC B2935

Test Step	Result / Action to Take
M1 RETRIEVE THE DTCs FROM THE LTM
Ignition ON. Using a scan tool, perform the LTM self-test. Is DTC B2935 the only DTC present?	Yes GO to M2 . No DIAGNOSE all other LTM DTCs first. REFER to the LTM DTC Chart in this section.
M2 CHECK THE MANUAL RELEASE OPERATION OF THE LIFTGATE LATCH
Disable the power liftgate feature from the message center. When disabled, the liftgate latch releases with a press of the liftgate release switch but the power liftgate function does not operate. Ignition OFF. NOTE: A small amount of interference during a manual operation is amplified during a power operation and may cause the liftgate not to power open. Manually unlatch the liftgate. Refer to Section 501-14A . Does the liftgate unlatch correctly?	Yes GO to M3 . No INSTALL a new power liftgate latch. REFER to Section 501-14A .
M3 CHECK THE MANUAL OPERATION OF THE LIFTGATE
While manually opening and closing the liftgate, check the liftgate for: Liftgate/wedge alignment Strut operation (struts should push liftgate open when beyond half open) Power liftgate motor (should move freely while manually opening and closing liftgate and be securely mounted to the liftgate and bracket) Power liftgate latch (should latch completely) Does the liftgate open and close correctly?	Yes INSTALL a new power liftgate motor. REFER to Power Liftgate Motor . No REPAIR and ALIGN as necessary. REFER to Liftgate Alignment .

Pinpoint Test N: DTC B1317

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

The LTM constantly monitors the voltage supply circuit. If the voltage exceeds a set parameter, the LTM sets a DTC.

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B1317	Battery Voltage High	Sets when the LTM detects battery voltage above 16 volts from the voltage supply circuits. Power liftgate operation is inhibited when this DTC sets.

Possible Sources

Charging system concern
LTM

PINPOINT TEST N: DTC B1317

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

Test Step	Result / Action to Take
N1 CHECK FOR CHARGING SYSTEM DTCs SET IN OTHER MODULES
Ignition ON. Using a scan tool, retrieve the continuous memory DTCs from all modules. Is DTC B1317, B1676 or P0563 (PCM) set in more than one module?	Yes REFER to Section 414-00 to diagnose an overcharging condition. No GO to N2 .
N2 CHECK THE BATTERY VOLTAGE
Turn off all interior/exterior lights and accessories. Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage. Does the battery voltage rise to 15 volts or higher?	Yes REFER to Section 414-00 to diagnose an overcharging condition. No GO to N3 .
N3 RECHECK FOR DTC B1317
Turn the engine off. Ignition ON. Using a scan tool, clear the continuous memory DTCs. Using a scan tool, carry out the LTM self-test. Is DTC B1317 present?	Yes INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) . No The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

Pinpoint Test O: DTC B1318

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 109 , Power Liftgate for schematic and connector information.

Normal Operation and Fault Conditions

The LTM constantly monitors the voltage supply circuit. If the voltage exceeds a set parameter, the LTM sets a DTC.

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B1318	Battery Voltage Low	Sets when the LTM detects battery voltage below 8 volts from the power supply circuits. Power liftgate operation is inhibited when this DTC sets.

Possible Sources

Charging system concern
High resistance
LTM

PINPOINT TEST O: DTC B1318

Test Step

Result / Action to Take

O1 RECHECK THE LTM DTCs

Ignition ON.
Using a scan tool, clear the DTCs and then repeat the LTM self-test.
Is DTC B1318 still present?

Yes
GO to O2 .

No
The system is operating normally at this time. The DTC may have been set due to a previous low battery voltage condition.

O2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM

Using a scan tool, perform the PCM KOEO self-test.
Using a scan tool, retrieve the continuous memory DTCs from the PCM.
Is DTC P0562, P0620, P0622, P0625, P0626 or P065B set in the PCM?

Yes
REFER to Section 414-00 .

No
GO to O3 .

O3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

Ignition OFF.
Check the battery condition and verify the battery is fully charged. Refer to Section 414-01 .
Is the battery OK and fully charged?

Yes
GO to O4 .

No
REFER to Section 414-01 .

O4 CHECK THE LTM VOLTAGE PIDs

Ignition ON.
Measure and record the voltage at the battery.
Using a scan tool, monitor the LTM VBAT_1 VBAT_2 PIDs.
Are the voltages within 0.2 volt of the recorded battery voltage?

Yes
GO to O7 .

No
GO to O5 .

O5 CHECK THE LTM VOLTAGE SUPPLY CIRCUITS FOR HIGH RESISTANCE

Ignition OFF.
Disconnect: LTM C4174A.
Ignition ON.
Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174A-9	SBP08 (VT/RD)	—	Ground
C4174A-4	SBB07 (WH/RD)	—	Ground

Are the voltages within 0.2 volt of the recorded battery voltage?

Yes
GO to O6 .

No
REPAIR the circuit in question.

O6 CHECK THE LTM GROUND CIRCUIT FOR HIGH RESISTANCE

Ignition OFF.
Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C4174A-1	GD349 (BK/GY)	—	Ground

Is the resistance less than 3 ohms?

Yes
GO to O7 .

No
REPAIR the circuit.

O7 CHECK FOR CORRECT LTM OPERATION

Disconnect and inspect all LTM 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 LTM connectors. Make sure they seat and latch correctly.
Operate the system and determine if the concern is still present.
Is the concern still present?

Pinpoint Test P: DTC U0140

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

The LTM and the BCM communicate using the MS-CAN . Messages are exchanged between the modules on the MS-CAN for the purposes of determining what functions are being carried out.

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
U0140	Lost Communication With Body Control Module (GEM)	Sets by the LTM if data messages received from the BCM over the MS-CAN are missing.

Possible Sources

Network communication concern
LTM
BCM

PINPOINT TEST P: DTC U0140

Test Step	Result / Action to Take
P1 VERIFY CUSTOMER CONCERN
Ignition ON. Verify that there is an observable symptom present. Is an observable symptom present?	Yes GO to P2 . No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.
P2 CHECK THE COMMUNICATION NETWORK
Using a scan tool, carry out the network test. Does the BCM pass the network test?	Yes GO to P3 . No REFER to Section 418-00 , The Body Control Module (BCM) Does Not Respond To The Scan Tool.
P3 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST
Using a scan tool, perform the BCM self-test. Is DTC U3003:16 or DTC U3003:17 recorded?	Yes REFER to Section 419-10 . No GO to P4 .
P4 RETRIEVE THE RECORDED DTCs FROM THE LTM SELF-TEST
Check the recorded results from the LTM self-test. Is DTC B1317 or DTC B1318 recorded?	Yes For DTC B1317, GO to Pinpoint Test N . For DTC B1318, GO to Pinpoint Test O . No GO to P5 .
P5 RECHECK THE LTM DTCs
NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out. Using a scan tool, clear the DTCs and repeat the LTM self-test. Is DTC U0140 still present?	Yes GO to P6 . No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.
P6 CHECK FOR DTC U0140 IN OTHER MODULES
Using a scan tool, clear all DTCs. Ignition OFF. Ignition ON. Wait 30 seconds. Using a scan tool, retrieve the continuous memory DTCs from all modules. Is DTC U0140 set in other modules?	Yes INSTALL a new BCM . REFER to Section 419-10 . No INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .

Pinpoint Test Q: DTC U0155

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

The LTM and the IPC communicate using the MS-CAN . Messages are exchanged between the modules on the MS-CAN for the purposes of determining what functions are being carried out.

LTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	Sets by the LTM if data messages received from the IPC over the MS-CAN are missing.

Possible Sources

Network communication concern
LTM
IPC

PINPOINT TEST Q: DTC U0155

Test Step	Result / Action to Take
Q1 VERIFY CUSTOMER CONCERN
Ignition ON. Verify that there is an observable symptom present. Is an observable symptom present?	Yes GO to Q2 . No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.
Q2 CHECK THE COMMUNICATION NETWORK
Using a scan tool, carry out the network test. Does the IPC pass the network test?	Yes GO to Q3 . No REFER to Section 418-00 , The Instrument Panel Cluster (IPC) Does Not Respond To The Scan Tool.
Q3 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
Using a scan tool, perform the IPC self-test. Is DTC U3003:16 or DTC U3003:17 recorded?	Yes REFER to Section 413-01 . No GO to Q4 .
Q4 RETRIEVE THE RECORDED DTCs FROM THE LTM SELF-TEST
Check the recorded results from the LTM self-test. Is DTC B1317 or DTC B1318 recorded?	Yes For DTC B1317, GO to Pinpoint Test N . For DTC B1318, GO to Pinpoint Test O . No GO to Q5 .
Q5 RECHECK THE LTM DTCs
NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out. Using a scan tool, clear the DTCs and repeat the LTM self-test. Is DTC U0155 still present?	Yes GO to Q6 . No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.
Q6 CHECK FOR DTC U0155 IN OTHER MODULES
Using a scan tool, clear all DTCs. Ignition OFF. Ignition ON. Wait 30 seconds. Using a scan tool, retrieve the continuous memory DTCs from all modules. Is DTC U0155 set in other modules?	Yes INSTALL a new IPC . REFER to Section 413-01 . No INSTALL a new LTM . REFER to Liftgate/Trunk Module (LTM) .