SECTION 417-02: Interior Lighting
2014 Flex Workshop Manual
DIAGNOSIS AND TESTING
Procedure revision date: 05/02/2013

Interior Lighting

 

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
B1175:01 Driver Door Ajar Switch: General Electrical Failure GO to Pinpoint Test E .
B1176:01 Passenger Door Ajar Switch: General Electrical Failure GO to Pinpoint Test E .
B11C0:01 Driver Side Rear Door Ajar Switch: General Electrical Failure GO to Pinpoint Test E .
B11C1:01 Passenger Side Rear Door Ajar Switch: General Electrical Failure GO to Pinpoint Test E .
B12C2:11 Puddle Lamp: Circuit Short To Ground GO to Pinpoint Test D .
B12C2:15 Puddle Lamp: Circuit Short To Battery or Open GO to Pinpoint Test F .
B1306:01 Liftgate Ajar Switch: General Electrical Failure GO to Pinpoint Test E .
B1313:11 Interior Lighting Output: Circuit Short To Ground GO to Pinpoint Test C .
B1313:15 Interior Lighting Output: Circuit Short To Battery or Open If the interior courtesy lamps are inoperative, GO to Pinpoint Test C .

If the interior courtesy lamps are always on, GO to Pinpoint Test G .

 


 HVAC Module DTC Chart

DTC Description Action
B127C:11 Ambient Lighting Zone 2 Output Red LED : Circuit Short To Ground GO to Pinpoint Test L .
B127C:12 Ambient Lighting Zone 2 Output Red LED : Circuit Short To Battery GO to Pinpoint Test L .
B127C:13 Ambient Lighting Zone 2 Output Red LED : Circuit Open GO to Pinpoint Test L .
B127F:11 Ambient Lighting Zone 2 Output Green LED : Circuit Short To Ground GO to Pinpoint Test L .
B127F:12 Ambient Lighting Zone 2 Output Green LED : Circuit Short To Battery GO to Pinpoint Test L .
B127F:13 Ambient Lighting Zone 2 Output Green LED : Circuit Open GO to Pinpoint Test L .
B1282:11 Ambient Lighting Zone 2 Output Blue LED : Circuit Short To Ground GO to Pinpoint Test L .
B1282:12 Ambient Lighting Zone 2 Output Blue LED : Circuit Short To Battery GO to Pinpoint Test L .
B1282:13 Ambient Lighting Zone 2 Output Blue LED : Circuit Open GO to Pinpoint Test L .

 


  LTM DTC Chart

DTC Description Action
B2718 Liftgate/Decklid Ajar Output Short to Battery GO to Pinpoint Test E .
B2721 Liftgate/Decklid Ajar Output Short to Ground or Open If the courtesy lamps are inoperative with the liftgate open, GO to Pinpoint Test M .

If the courtesy lamps are always on, GO to Pinpoint Test E .

 

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
  • A module does not respond to the scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Module
  • The courtesy lamps flash on and off
  • The BCM is not configured correctly
  • This symptom is present due to incomplete or improper PMI procedures. REPEAT/PERFORM the PMI procedure as directed by the scan tool. REFER to Section 418-01 .
  • The courtesy lamps do not illuminate with a door open
  • Refer to the Pinpoint Test
  • The courtesy lamps do not illuminate from the instrument panel dimmer switch
  • Refer to the Pinpoint Test
  • The Courtesy Lamps Do Not Illuminate With The Liftgate Open
  • Refer to the Pinpoint Test
  • One or more interior courtesy lamp is inoperative
  • Refer to the Pinpoint Test
  • One or more puddle lamp is inoperative
  • Refer to the Pinpoint Test
  • All the courtesy lamps stay on continuously
  • Refer to the Pinpoint Test
  • The puddle lamps stay on continuously
  • Refer to the Pinpoint Test
  • The interior courtesy lamps stay on continuously
  • Refer to the Pinpoint Test
  • All the demand lamps are inoperative
  • Refer to the Pinpoint Test
  • An individual demand lamp is inoperative
  • Refer to the Pinpoint Test
  • The battery saver does not deactivate after time-out
  • Refer to the Pinpoint Test
  • One or more of the ambient lighting LEDs are inoperative
  • Refer to the Pinpoint Test
  • One or more of the ambient lighting LEDs do not cycle through all color combinations
  • Refer to the Pinpoint Test
 

Pinpoint Tests

 

Pinpoint Test A: The Courtesy Lamps Do Not Illuminate With A Door 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .

 
PINPOINT TEST A: THE COURTESY LAMPS DO NOT ILLUMINATE WITH A DOOR OPEN

NOTE: Make sure that the dark car feature is not enabled in the BCM . The dark car feature disables activation of courtesy lamps due to a door unlock, door ajar or removing the key from the ignition cylinder. The feature can be disabled using a scan tool.

Test Step Result / Action to Take
  A1 CHECK THE COURTESY LAMP OPERATION USING THE INSTRUMENT PANEL DIMMER SWITCH  
  • Press and hold the instrument panel dimmer switch to the DOME LAMP ON (second detent up) position for 3 seconds.
  • Do the interior courtesy lamps illuminate using the instrument panel dimmer switch?
Yes
GO to A2 .

No
GO to Pinpoint Test C .
  A2 CHECK THE DOOR AJAR SWITCH OPERATION  
  • Press and hold the instrument panel dimmer switch to the DOME LAMP OFF (second detent down) position for 3 seconds.
  • Disconnect: Suspect Door Latch.
  • Do the interior lamps illuminate?
Yes
INSTALL a new door latch in question. REFER to Section 501-14A (without IA ) or Section 501-14B (with IA ).

No
GO to A3 .
  A3 CHECK THE SUSPECT DOOR AJAR SWITCH CIRCUIT FOR A SHORT TO GROUND  
  • Disconnect: BCM C2280C.
  • Measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Front Door Ajar Switch
    C525-5 CPL26 (GN/VT) — Ground
    RH Front Door Ajar Switch
    C603-5 CPL31 (WH) — Ground
    LH Rear Door Ajar Switch
    C704-5 CPL39 (YE) — Ground
    RH Rear Door Ajar Switch
    C804-5 CPL39 (YE) — Ground



  • Is the resistance greater than 10,000 ohms?
Yes
GO to A4 .

No
REPAIR the circuit.
  A4 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
 

Pinpoint Test B: The Courtesy Lamps Do Not Illuminate From The Instrument Panel Dimmer 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .

 
PINPOINT TEST B: THE COURTESY LAMPS DO NOT ILLUMINATE FROM THE INSTRUMENT PANEL DIMMER SWITCH
Test Step Result / Action to Take
  B1 CHECK THE OPERATION OF THE COURTESY LAMPS FROM A DOOR  
  • Place the headlamp switch in the OFF position.
  • Open any door and observe the interior courtesy lamps.
  • Do the interior courtesy lamps illuminate?
Yes
GO to B2 .

No
GO to Pinpoint Test A .
  B2 CHECK THE DIMMABLE BACKLIGHTING ILLUMINATION  
  • Turn the headlamps switch to the PARKING LAMPS ON position.
  • Monitor the instrument panel dimmable backlighting while pressing (and holding) the instrument panel dimmer switch to the first detent up and then the first detent down.
  • Does the instrument cluster illumination intensity change with the instrument panel dimmer switch position?
Yes
GO to B3 .

No
REFER to Section 413-00 to continue diagnosis of the dimmable backlighting illumination.
  B3 CHECK FOR A VOLTAGE SIGNAL TO THE INSTRUMENT PANEL DIMMER SWITCH  
  • Ignition OFF.
  • Turn the headlamps switch to the OFF position.
  • Disconnect: Instrument Panel Dimmer Switch C2065.
  • Measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C2065-2 VLN36 (GY/OG) — Ground



  • Is the voltage approximately 5 volts?
Yes
INSTALL a new instrument panel dimmer switch. REFER to Section 413-00 .

No
GO to B4 .
  B4 CHECK THE DOME LAMP REQUEST INPUT CIRCUIT FOR AN OPEN  
  • Disconnect: SCCM C2414A.
  • Measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C2414A-19 VLN36 (GY/OG) C2065-2 VLN36 (GY/OG)



  • Is the resistance less than 3 ohms?
Yes
GO to B5 .

No
REPAIR the circuit.
  B5 CHECK FOR CORRECT SCCM OPERATION  
  • Disconnect and inspect all the SCCM 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 SCCM 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 SCCM . REFER to Section 211-05 .

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: One Or More Interior Courtesy Lamp 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .



 DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions
B1313:11 Interior Lighting Output: Circuit Short To Ground Sets when the BCM detects a short to ground from the courtesy lighting output circuit.
B1313:15 Interior Lighting Output: Circuit Short To Battery or Open Sets when the BCM detects an open from the courtesy lighting output circuit.

 
PINPOINT TEST C: ONE OR MORE INTERIOR COURTESY LAMP IS INOPERATIVE

NOTE: After any repair:

If BCM DTC U1000:00 is present, clear the DTCs and repeat the self-test (required to enable the low beam output driver if DTC U1000:00 is present).

If BCM DTC U3000:49 is present, install a new BCM . Refer to Section 419-10 .

Test Step Result / Action to Take
  C1 CHECK THE OPERATION OF ALL THE INTERIOR COURTESY LAMPS  
  • Ignition OFF.
  • Press and hold the instrument panel dimmer switch to the DOME LAMP ON (second detent up) position for 3 seconds.
  • Are all the interior courtesy lamps inoperative?
Yes
VERIFY BCM fuse 12 (15A) is OK. If OK, GO to C4 . If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

No
GO to C2 .
  C2 CHECK FOR VOLTAGE TO THE INTERIOR LAMP  
  • Turn the interior courtesy lamps off.
  • Disconnect: Inoperative Lamp.
  • Press and hold the instrument panel dimmer switch to the DOME LAMP ON (second detent up) position for 3 seconds.
  • For front interior lamp, measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C929-2 VLN33 (GY/VT) — Ground



  • For second row interior lamp (with roof opening panel), measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Second Row Lamp
    C9009-1 VLN33 (GY/VT) — Ground
    RH Second Row Lamp
    C9010-1 VLN33 (GY/VT) — Ground



  • For second row (without roof opening panel) and third row interior lamp, measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    Second Row Lamp
    C961-1 VLN33 (GY/VT) — Ground
    Third Row Lamp
    C932-1 VLN33 (GY/VT) — Ground



  • Is the voltage greater than 11 volts?
Yes
GO to C3 .

No
REPAIR the circuit.
  C3 CHECK THE INTERIOR LAMP GROUND CIRCUIT FOR AN OPEN  
  • For front interior lamp, measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C929-2 VLN33 (GY/VT) C929-1 GD233 (BK)



  • For second row interior lamp (with roof opening panel), measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Second Row Lamp
    C9009-1 VLN33 (GY/VT) C9009-2 GD233 (BK)
    RH Second Row Lamp
    C9010-1 VLN33 (GY/VT) C9010-2 GD233 (BK)



  • For second row (without roof opening panel) and third row interior lamp, measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    Second Row Lamp
    C961-1 VLN33 (GY/VT) C961-2 GD233 (BK)
    Third Row Lamp
    C932-1 VLN33 (GY/VT) C932-2 GD233 (BK)



  • Is the voltage greater than 11 volts?
Yes
INSTALL a new interior lamp for the lamp in question. REFER to Interior Lamp .

No
REPAIR the circuit.
  C4 BYPASS THE BCM  
  • Ignition OFF.
  • Disconnect: BCM C2280A.
  • Connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C2280A-1 VLN33 (GY/VT) — Battery positive



  • Do the courtesy lamps illuminate?
Yes
REMOVE the jumper wire. GO to C5 .

No
REMOVE the jumper wire. REPAIR the circuit.
  C5 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
 

Pinpoint Test D: One Or More Puddle Lamp 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .



 DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions
B12C2:11 Puddle Lamp: Circuit Short To Ground Sets when the BCM detects a short to ground from the puddle lamp output circuit.

 
PINPOINT TEST D: ONE OR MORE PUDDLE LAMP IS INOPERATIVE

NOTE: After any repair:

If BCM DTC U1000:00 is present, clear the DTCs and repeat the self-test (required to enable the low beam output driver if DTC U1000:00 is present).

If BCM DTC U3000:49 is present, install a new BCM . Refer to Section 419-10 .

Test Step Result / Action to Take
  D1 DETERMINE IF BOTH PUDDLE LAMPS ARE INOPERATIVE  
  • Ignition OFF.
  • Press and hold the instrument panel dimmer switch to the DOME LAMP ON (second detent up) position for 3 seconds.
  • Are both the puddle lamps inoperative?
Yes
VERIFY BCM fuse 12 (15A) is OK. If OK, GO to D4 . If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

No
GO to D2 .
  D2 CHECK FOR VOLTAGE TO THE EXTERIOR MIRROR  
  • Press and hold the instrument panel dimmer switch to the DOME LAMP OFF (second detent down) position for 3 seconds.
  • Disconnect: LH Exterior Mirror C516 or RH Exterior Mirror C625.
  • Press and hold the instrument panel dimmer switch to the DOME LAMP ON (second detent up) position for 3 seconds.
  • Measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Puddle Lamp
    C516-5 CLN25 (VT) — Ground
    RH Puddle Lamp
    C625-5 CLN25 (VT) — Ground



  • Is the voltage greater than 11 volts?
Yes
GO to D3 .

No
REPAIR the circuit.
  D3 CHECK THE EXTERIOR MIRROR GROUND CIRCUIT FOR AN OPEN  
  • Measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Puddle Lamp
    C516-5 CLN25 (VT) C516-7 GD233 (BK)
    RH Puddle Lamp
    C625-5 CLN25 (VT) C625-7 GD348 (BK/YE)



  • Is the voltage greater than 11 volts?
Yes
CHECK the inoperative exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror in question. REFER to Section 501-09 .

No
REPAIR the circuit.
  D4 BYPASS THE BCM  
  • Press and hold the instrument panel dimmer switch to the DOME LAMP OFF (second detent down) position for 3 seconds.
  • Disconnect: BCM C2280C.
  • Connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C2280C-1 CLN25 (VT) — Battery positive



  • Do the puddle lamps illuminate?
Yes
REMOVE the jumper wire. GO to D5 .

No
REMOVE the jumper wire. REPAIR the circuit.
  D5 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
 

Pinpoint Test E: All The Courtesy Lamps Stay On Continuously

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 89 , Interior Lamps for schematic and connector information.

Refer to Wiring Diagrams Cell 117 , Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .



 DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions
B1175:01 Driver Door Ajar Switch: General Electrical Failure A continuous and on-demand DTC that sets when the BCM module detects an open from the LH front door ajar circuit.
B1176:01 Passenger Door Ajar Switch: General Electrical Failure A continuous and on-demand DTC that sets when the BCM module detects an open from the RH front door ajar circuit.
B11C0:01 Driver Side Rear Door Ajar Switch: General Electrical Failure A continuous and on-demand DTC that sets when the BCM module detects an open from the LH rear door ajar circuit.
B11C1:01 Passenger Side Rear Door Ajar Switch: General Electrical Failure A continuous and on-demand DTC that sets when the BCM module detects an open from the RH rear door ajar circuit.
B2718 Liftgate/Decklid Ajar Output Short to Battery Sets when the LTM detects a short to voltage from the liftgate ajar circuit to the BCM .
B2721 Liftgate/Decklid Ajar Output Short to Ground or Open Sets when the LTM detects an open from the liftgate ajar circuit to the BCM .
B1306:01 Liftgate Ajar Switch: General Electrical Failure A continuous and on-demand DTC that sets when the BCM module detects an open from the liftgate ajar circuit.

 
PINPOINT TEST E: ALL THE COURTESY LAMPS STAY ON CONTINUOUSLY
Test Step Result / Action to Take
  E1 CHECK THE DOOR AJAR SWITCH PIDs  
  • Ignition ON.
  • Using a scan tool, monitor the BCM ajar switch PIDs (DOOR_SW_LUGG, DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR or DOOR_SW_RR) while opening and closing all the doors and liftgate.
  • Do all the liftage and door ajar switch PID values agree with the liftgate and door positions?
Yes
If the interior courtesy lamps are on, GO to Pinpoint Test G . If the puddle lamps are on, GO to Pinpoint Test F .

No
GO to E2 .
  E2 BYPASS THE SUSPECT AJAR SWITCH OR LTM  
  • Disconnect: Suspect Door Ajar Switch (LH or RH doors).
  • Disconnect: Liftgate Latch C4185 (manual liftgate).
  • Disconnect: LTM C4174B (power liftgate).
  • For LH or RH doors, connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    LH Front Door Ajar Switch
    C525-5 CPL26 (GN/VT) C525-6 GD233 (BK)
    RH Front Door Ajar Switch
    C603-5 CPL31 (WH) C603-6 GD348 (BK/YE)
    LH Rear Door Ajar Switch
    C704-5 CPL39 (YE) C704-6 GD348 (BK/YE)
    RH Rear Door Ajar Switch
    C804-5 CPL39 (YE) C804-6 GD348 (BK/YE)



  • For manual liftgate, connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C4185-4 CPL44 (YE/OG) C4185-3 GD349 (BK/GY)



  • For power liftgate, connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C4174B-15 CPL44 (YE/OG) — Ground



  • Using a scan tool, view BCM PIDs.
  • Monitor the suspect BCM ajar switch PIDs (DOOR_SW_LUGG, DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR or DOOR_SW_RR).
  • Does the PID indicate the door is closed?
Yes
For LH and RH doors, REMOVE the jumper wire. INSTALL a new door latch or door ajar switch in question. REFER to Section 501-14A (without IA ) or Section 501-14B (with IA ).

For manual liftgate, REMOVE the jumper wire. INSTALL a new liftgate latch. REFER to Section 501-03 .

For power liftgate, REMOVE the jumper wire. GO to E6 .

No
For LH and RH doors and manual liftgate, REMOVE the jumper wire. GO to E3 .

For power liftgate, REMOVE the jumper wire. GO to E4 .
  E3 BYPASS THE AJAR SWITCH GROUND CIRCUIT  
  • For LH or RH doors, connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    LH Front Door Ajar Switch
    C525-5 CPL26 (GN/VT) — Ground
    RH Front Door Ajar Switch
    C603-5 CPL31 (WH) — Ground
    LH Rear Door Ajar Switch
    C704-5 CPL39 (YE) — Ground
    RH Rear Door Ajar Switch
    C804-5 CPL39 (YE) — Ground



  • For manual liftgate, connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C4185-4 CPL44 (YE/OG) — Ground



  • Using a scan tool, view BCM PIDs.
  • Monitor the suspect BCM ajar switch PIDs (DOOR_SW_LUGG, DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR or DOOR_SW_RR).
  • Does the PID indicate the door is closed?
Yes
REMOVE the jumper wire. REPAIR the circuit.

No
REMOVE the jumper wire. GO to E4 .
  E4 CHECK THE AJAR SWITCH INPUT CIRCUIT FOR AN OPEN  
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • For LH or RH doors, measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Front Door Ajar Switch
    C525-5 CPL26 (GN/VT) C2280C-9 CPL26 (GN/VT)
    RH Front Door Ajar Switch
    C603-5 CPL31 (WH) C2280C-5 CPL31 (WH)
    LH Rear Door Ajar Switch
    C704-5 CPL39 (YE) C2280C-20 CPL36 (GN)
    RH Rear Door Ajar Switch
    C804-5 CPL39 (YE) C2280C-21 CPL39 (YE)



  • For manual liftgate, measure the resistance between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C4185-4 CPL44 (YE/OG) C2280C-19 CPL44 (YE/OG)



  • For power liftgate, measure the resistance between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C4174B-15 CPL44 (YE/OG) C2280C-19 CPL44 (YE/OG)



  • Is the resistance less than 3 ohms?
Yes
GO to E5 .

No
REPAIR the circuit.
  E5 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
  E6 CHECK FOR CORRECT LTM OPERATION  
  • Disconnect and inspect all the 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 Section 501-03 .

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 Puddle Lamps Stay On Continuously

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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .



 DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions
B12C2:15 Puddle Lamp: Circuit Short To Battery or Open Sets when the BCM detects an open or a short to voltage from the puddle lamp output circuit.

 
PINPOINT TEST F: THE PUDDLE LAMPS STAY ON CONTINUOUSLY
Test Step Result / Action to Take
  F1 CHECK THE INTERIOR COURTESY LAMPS  
  • Ignition OFF.
  • Wait 1 minute.
  • Are the interior courtesy lamps illuminated?
Yes
GO to Pinpoint Test E .

No
GO to F2 .
  F2 CHECK THE BCM PUDDLE LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE  
  • Disconnect: BCM C2280C.
  • Ignition ON.
  • Do the puddle lamps continue to illuminate?
Yes
REPAIR circuit CLN25 (VT).

No
GO to F3 .
  F3 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
 

Pinpoint Test G: The Interior Courtesy Lamps Stay On Continuously

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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .



 DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions
B1313:15 Interior Lighting Output: Circuit Short To Battery or Open Sets when the BCM detects an open or a short to voltage from the puddle lamp output circuit.

 
PINPOINT TEST G: THE INTERIOR COURTESY LAMPS STAY ON CONTINUOUSLY
Test Step Result / Action to Take
  G1 CHECK THE DOOR AJAR SWITCH PIDs  
  • Ignition ON.
  • Using a scan tool, view BCM PIDs.
  • Monitor the suspect BCM door ajar switch PIDs (DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR or DOOR_SW_RR) while opening and closing all the doors.
  • Do all the door ajar switch PID values agree with the door positions?
Yes
GO to G2 .

No
GO to Pinpoint Test E .
  G2 CHECK THE BCM INTERIOR COURTESY LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE  
  • Ignition OFF.
  • Disconnect: BCM C2280A.
  • Ignition ON.
  • Observe the courtesy lamps.
  • Do the interior courtesy lamps continue to illuminate?
Yes
REPAIR circuit VLN33 (GY/VT).

No
GO to G3 .
  G3 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
 

Pinpoint Test H: All The Demand Lamps Are 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Demand Lamps in Interior Lighting .

 
PINPOINT TEST H: ALL THE DEMAND LAMPS ARE INOPERATIVE

NOTE: Make sure the battery saver is operating correctly by checking the courtesy lamps first.

Test Step Result / Action to Take
  H1 BYPASS THE BCM  
  • Ignition OFF.
  • Disconnect: BCM C2280D.
  • Connect a fused jumper wire between:


    • Lead 1 Lead 2
    Pin Circuit Pin Circuit
    C2280D-22 CLN09 (YE/GN) — Battery positive



  • Do the demand lamps illuminate when switched on?
Yes
REMOVE the jumper wire. VERIFY the BCM fuse 4 (10A) is OK. If OK, GO to H2 . If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

No
REMOVE the jumper wire. REPAIR the circuit.
  H2 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
 

Pinpoint Test I: An Individual Demand Lamp 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Demand Lamps in Interior Lighting .

 
PINPOINT TEST I: AN INDIVIDUAL DEMAND LAMP IS INOPERATIVE
Test Step Result / Action to Take
  I1 CHECK FOR VOLTAGE TO THE DEMAND LAMP  
  • Ignition OFF.
  • Disconnect: Inoperative Demand Lamp.
  • Ignition ON.
  • Measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Vanity Mirror Lamp
    C907-1 CLN09 (YE/GN) — Ground
    RH Vanity Mirror Lamp
    C906-1 CLN09 (YE/GN) — Ground
    Front Interior Lamp
    C929-3 CLN09 (YE/GN) — Ground
    Second Row Lamp (without roof opening panel)
    C961-3 CLN09 (YE/GN) — Ground
    LH Second Row Lamp (with roof opening panel)
    C9009-3 CLN09 (YE/GN) — Ground
    RH Second Row Lamp (with roof opening panel)
    C9010-3 CLN09 (YE/GN) — Ground
    Third Row Lamp
    C932-3 CLN09 (YE/GN) — Ground



  • Is the voltage greater than 11 volts?
Yes
For inoperative glove compartment lamp only, INSPECT the lamp ground for a loose or corroded connection. If OK, INSTALL a new glove compartment lamp.

For all other demand lamps, GO to I2 .

No
REPAIR the circuit.
  I2 CHECK THE DEMAND LAMP GROUND CIRCUIT FOR AN OPEN  
  • Measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Vanity Mirror Lamp
    C907-1 CLN09 (YE/GN) C907-2 GD233 (BK)
    RH Vanity Mirror Lamp
    C906-1 CLN09 (YE/GN) C906-2 GD233 (BK)
    Front Interior Lamp
    C929-3 CLN09 (YE/GN) C929-1 GD233 (BK)
    Second Row Lamp (without roof opening panel)
    C961-3 CLN09 (YE/GN) C961-2 GD233 (BK)
    LH Second Row Lamp (with roof opening panel)
    C9009-3 CLN09 (YE/GN) C9009-2 GD233 (BK)
    RH Second Row Lamp (with roof opening panel)
    C9010-3 CLN09 (YE/GN) C9010-2 GD233 (BK)
    Third Row Lamp
    C932-3 CLN09 (YE/GN) C932-2 GD233 (BK)



  • Is the voltage greater than 11 volts?
Yes
INSTALL a new demand lamp for the inoperative lamp in question.

No
REPAIR the circuit.
 

Pinpoint Test J: The Battery Saver Does Not Deactivate After Time-Out

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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Battery Saver in Interior Lighting .

 
PINPOINT TEST J: THE BATTERY SAVER DOES NOT DEACTIVATE AFTER TIME-OUT
Test Step Result / Action to Take
  J1 CHECK THE BCM IGNITION SWITCH STATE PID  
  • Ignition ON.
  • Using a scan tool, view BCM PIDs.
  • Monitor the BCM Ignition Switch PID (IGN_SW_STATE) while changing ignition to OFF.
  • Does the ignition PID agree with the ignition state?
Yes
GO to J2 .

No
REFER to Section 211-05 .
  J2 CHECK THE DEMAND LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE  
  • Ignition OFF.
  • Disconnect: BCM C2280D.
  • Ignition ON.
  • Operate the demand lamps.
  • Do the demand lamps illuminate?
Yes
REPAIR circuit CLN09 (YE/GN).

No
GO to J3 .
  J3 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.
 

Pinpoint Test K: One Or More Of The Ambient Lighting LEDs Are 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Ambient Lighting in Interior Lighting .

Possible Sources

 
PINPOINT TEST K: ONE OR MORE OF THE AMBIENT LIGHTING LEDs ARE INOPERATIVE
Test Step Result / Action to Take
  K1 CHECK AMBIENT LIGHTING OPERATION  
  • Ignition ON.
  • Place the headlamp switch in the parking lamps ON position.
  • Observe each of the ambient lamps.
  • Are all the ambient lamps inoperative?
Yes
GO to K2 .

No
GO to K7 .
  K2 CHECK FOR COMMUNICATION TO THE HVAC MODULE  
  • Ignition ON.
  • Using a scan tool, carry out the network test.
  • Does the HVAC module pass the network test?
Yes
GO to K3 .

No
REFER to Section 418-00 , The HVAC Module Does Not Respond To The Scan Tool.
  K3 CHECK THE CLIMATE CONTROL OPERATION  
  • Check the operation of the climate control system and verify that all of the climate controls operate correctly.
  • Does the climate control system operate correctly?
Yes
GO to K4 .

No
REFER to Section 412-00 .
  K4 CHECK THE AMBIENT LIGHTING GROUND CIRCUIT FOR AN OPEN  
  • Ignition OFF.
  • Disconnect: HVAC Module C228C.
  • Disconnect: Negative Battery Cable.
  • Measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C228C-8 GD375 (BK/BU) — Ground



  • Is the resistance less than 3 ohms?
Yes
GO to K5 .

No
REPAIR the circuit.
  K5 CHECK THE AMBIENT LIGHTING LED RETURN CIRCUIT FOR A SHORT TO VOLTAGE  
  • Connect: Negative Battery Cable.
  • Ignition ON.
  • Measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C228C-17 RLN44 (BN) — Ground



  • Is any voltage present?
Yes
REPAIR the circuit.

No
GO to K6 .
  K6 CHECK THE AMBIENT LIGHTING LED RETURN CIRCUIT FOR AN OPEN  
  • Ignition OFF.
  • Diode check between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C228C-5 VLN50 (YE/BU) C228C-17 RLN44 (BN)



  • Does the meter indicate the circuit is good?
Yes
GO to K8 .

No
REPAIR the affected circuit.
  K7 CHECK THE AMBIENT LIGHTING LED RETURN CIRCUIT FOR AN OPEN TO THE LEDs  
  • Ignition OFF.
  • Disconnect: HVAC Module C228C.
  • Disconnect: Inoperative Ambient Lighting LED Harness Inline Connector.
  • Measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Front Footwell Ambient Lighting
    C228C-17 RLN44 (BN) C327F-2 RLN44 (BN)
    RH Front Footwell Ambient Lighting
    C228C-17 RLN44 (BN) C3047M-2 RLN44 (BN)
    Cupholder Ambient Lighting
    C228C-17 RLN44 (BN) C313F-2 RLN44 (BN)
    Storage Bin, LH and RH Rear Footwell Ambient Lighting
    C228C-17 RLN44 (BN) C3249M-4 RLN44 (BN)



  • Is the resistance less than 3 ohms?
Yes
INSTALL a new ambient lighting harness in question.

No
REPAIR the circuit.
  K8 CHECK FOR CORRECT HVAC MODULE OPERATION  
  • 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 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 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 L: One Or More Of The Ambient Lighting LEDs Do Not Cycle Through All Color Combinations

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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Ambient Lighting in Interior Lighting .



 DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions
B127C:11 Ambient Lighting Zone 2 Output Red LED : Circuit Short To Ground Sets when the HVAC module detects a short to ground from a red ambient lighting output circuit.
B127C:12 Ambient Lighting Zone 2 Output Red LED : Circuit Short To Battery Sets when the HVAC module detects a short to voltage from a red ambient lighting output circuit.
B127C:13 Ambient Lighting Zone 2 Output Red LED : Circuit Open Sets when the HVAC module detects an open from a red ambient lighting output circuit.
B127F:11 Ambient Lighting Zone 2 Output Green LED : Circuit Short To Ground Sets when the HVAC module detects a short to ground from a green ambient lighting output circuit.
B127F:12 Ambient Lighting Zone 2 Output Green LED : Circuit Short To Battery Sets when the HVAC module detects a short to voltage from a green ambient lighting output circuit.
B127F:13 Ambient Lighting Zone 2 Output Green LED : Circuit Open Sets when the HVAC module detects an open from a green ambient lighting output circuit.
B1282:11 Ambient Lighting Zone 2 Output Blue LED : Circuit Short To Ground Sets when the HVAC module detects a short to ground from a blue ambient lighting output circuit.
B1282:12 Ambient Lighting Zone 2 Output Blue LED : Circuit Short To Battery Sets when the HVAC module detects a short to voltage from a blue ambient lighting output circuit.
B1282:13 Ambient Lighting Zone 2 Output Blue LED : Circuit Open Sets when the HVAC module detects an open from a blue ambient lighting output circuit.

 
PINPOINT TEST L: ONE OR MORE OF THE AMBIENT LIGHTING LEDs DO NOT CYCLE THROUGH ALL COLOR COMBINATIONS
Test Step Result / Action to Take
  L1 CHECK AMBIENT LIGHTING OPERATION  
  • Ignition ON.
  • Place the headlamp switch in the parking lamps ON position.
  • Observe each of the ambient lamps while changing all the colors.
  • Do all the ambient lamps display the same colors?
Yes
GO to L2 .

No
GO to L5 .
  L2 CHECK THE AMBIENT LIGHTING BLUE, GREEN AND RED OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE  
  • Ignition OFF.
  • Disconnect: HVAC Module C228C.
  • Ignition ON.
  • Measure the voltage between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C228C-5 VLN50 (YE/BU) — Ground
    C228C-6 VLN49 (YE/GN) — Ground
    C228C-7 VLN48 (YE/OG) — Ground



  • Is any voltage present?
Yes
REPAIR the affected circuit(s).

No
GO to L3 .
  L3 CHECK THE AMBIENT LIGHTING BLUE, GREEN AND RED OUTPUT CIRCUITS FOR A SHORT TO GROUND  
  • Ignition OFF.
  • Measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C228C-5 VLN50 (YE/BU) — Ground
    C228C-6 VLN49 (YE/GN) — Ground
    C228C-7 VLN48 (YE/OG) — Ground



  • Are the resistances greater than 10,000 ohms?
Yes
GO to L4 .

No
REPAIR the affected circuit(s).
  L4 CHECK THE AMBIENT LIGHTING BLUE, GREEN AND RED OUTPUT CIRCUITS  
  • Diode check between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C228C-5 VLN50 (YE/BU) C228C-17 RLN44 (BN)
    C228C-6 VLN49 (YE/GN) C228C-17 RLN44 (BN)
    C228C-7 VLN48 (YE/OG) C228C-17 RLN44 (BN)



  • Does the meter indicate the circuits are good?
Yes
GO to L6 .

No
REPAIR the affected circuit(s).
  L5 CHECK THE AMBIENT LIGHTING LED RETURN CIRCUIT FOR AN OPEN TO THE LEDs  
  • Disconnect: Inoperative Ambient Lighting LED Harness Inline Connector.
  • Measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    LH Front Footwell Ambient Lighting
    C228C-5 VLN50 (YE/BU) C327F-3 VLN50 (YE/BU)
    C228C-6 VLN49 (YE/GN) C327F-4 VLN49 (YE/GN)
    C228C-7 VLN48 (YE/OG) C327F-1 VLN48 (YE/OG)
    RH Front Footwell Ambient Lighting
    C228C-5 VLN50 (YE/BU) C3047M-3 VLN50 (YE/BU)
    C228C-6 VLN49 (YE/GN) C3047M-4 VLN49 (YE/GN)
    C228C-7 VLN48 (YE/OG) C3047M-1 VLN48 (YE/OG)
    Cupholder Ambient Lighting
    C228C-5 VLN50 (YE/BU) C313F-3 VLN50 (YE/BU)
    C228C-6 VLN49 (YE/GN) C313F-4 VLN49 (YE/GN)
    C228C-7 VLN48 (YE/OG) C313F-1 VLN48 (YE/OG)
    Storage Bin, LH and RH Rear Footwell Ambient Lighting
    C228C-5 VLN50 (YE/BU) C3249M-2 VLN50 (YE/BU)
    C228C-6 VLN49 (YE/GN) C3249M-3 VLN49 (YE/GN)
    C228C-7 VLN48 (YE/OG) C3249M-1 VLN48 (YE/OG)



  • Are the resistances less than 3 ohms?
Yes
INSTALL a new ambient lighting harness in question.

No
REPAIR the affected circuit(s).
  L6 CHECK FOR CORRECT HVAC MODULE OPERATION  
  • 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 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 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 M: The Courtesy Lamps Do Not Illuminate With The Liftgate 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 89 , Interior Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Courtesy Lamps in Interior Lighting .



 DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions
B2721 Liftgate/Decklid Ajar Output Short to Ground or Open Sets when the LTM detects a short to ground from the BCM liftgate ajar input circuit.

 
PINPOINT TEST M: THE COURTESY LAMPS DO NOT ILLUMINATE WITH THE LIFTGATE OPEN

NOTE: Make sure that the dark car feature is not enabled in the BCM . The dark car feature disables activation of courtesy lamps due to a door unlock, door ajar or removing the key from the ignition cylinder. The feature can be disabled using a scan tool.

Test Step Result / Action to Take
  M1 CHECK THE COURTESY LAMP OPERATION FROM ANY DOOR  
  • Ignition OFF.
  • Open any door and observe the courtesy lamps.
  • Do the courtesy lamps illuminate?
Yes
GO to M2 .

No
GO to Pinpoint Test A .
  M2 CHECK THE LTM OR THE LIFTGATE LATCH  
  • Disconnect: Liftgate Latch C4185 (manual liftgate).
  • Disconnect: LTM C4174B (power liftgate).
  • Do the courtesy lamps illuminate?
Yes
GO to M4 .

No
GO to M3 .
  M3 CHECK THE LIFTGATE AJAR INPUT CIRCUIT FOR A SHORT TO GROUND  
  • Disconnect: BCM C2280C.
  • Measure the resistance between:


    • Positive Lead Negative Lead
    Pin Circuit Pin Circuit
    C2280C-19 CPL44 (YE/OG) — Ground



  • Is the resistance greater than 10,000 ohms?
Yes
GO to M5 .

No
REPAIR the circuit.
  M4 CHECK FOR CORRECT LTM OPERATION  
  • Disconnect and inspect all the 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 Section 501-03 .

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.
  M5 CHECK FOR CORRECT BCM OPERATION  
  • 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 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 BCM . 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.