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PINPOINT TEST E : All The Courtesy Lamps Stay On Continuously

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

  1. E1 CHECK THE DOOR AJAR SWITCH PIDs

    • Ignition ON.
    • Using a diagnostic scan tool, view BCM PIDs.
    • Monitor the following BCM PIDs while opening and closing all the doors:
      • Drivers Door Ajar Switch Status (DOOR_SW_DRVR)
      • Left Rear Door Ajar Switch (DOOR_SW_LR)
      • Passenger Door Ajar Switch Status (DOOR_SW_PSGR)
      • Right Rear Door Ajar Switch (DOOR_SW_RR)

    Do all the door ajar switch PID values agree with the door positions? 

    Yes  If equipped with a manual liftgate, GO to  E2.If equipped with a power liftgate, GO to  E3.
    No  GO to  E5.

  2. E2 CHECK THE LIFTGATE AJAR SWITCH PID (MANUAL LIFTGATE)

    • Using a diagnostic scan tool, view BCM PIDs.
    • Monitor the BCM Luggage Compartment Lid Ajar Switch (DOOR_SW_LUGG) PID while opening and closing the liftgate and liftgate glass.

    Does the PID value agree with the liftgate and liftgate glass positions? 

    Yes  GO to  E18.
    No  GO to  E8.

  3. E3 CHECK THE LIFTGATE GLASS AJAR SWITCH PIDs (POWER LIFTGATE)

    • Using a diagnostic scan tool, view LTM PIDs.
    • Monitor the LTM Liftgate Glass Ajar Switch (GLASS_POS) PID while opening and closing the liftgate glass.

    Does the PID value agree with the liftgate glass positions? 

    Yes  GO to  E4.
    No  GO to  E13.

  4. E4 CHECK THE LIFTGATE AJAR SWITCH PIDs (POWER LIFTGATE)

    • Using a diagnostic scan tool, view BCM PIDs.
    • Monitor the BCM Luggage Compartment Lid Ajar Switch (DOOR_SW_LUGG) PID while opening and closing the liftgate.

    Does the PID value agree with the liftgate positions? 

    Yes  GO to  E18.
    No  GO to  E16.

  5. E5 BYPASS THE SUSPECT DOOR LATCH

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Disconnect: Suspect Door Latch.
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      Suspect Door Ajar Switch, LF C526-2
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Suspect Door Ajar Switch, LF C526-1
      Suspect Door Ajar Switch, RF C602-2 Suspect Door Ajar Switch, RF C602-1
      Suspect Door Ajar Switch, LR C715-2 Suspect Door Ajar Switch, LR C715-1
      Suspect Door Ajar Switch, RR C820-2 Suspect Door Ajar Switch, RR C820-1
    • Using a scan tool, view BCM PIDs.
    • Monitor the suspect BCM PIDs while opening and closing all the doors:
      • Drivers Door Ajar Switch Status (DOOR_SW_DRVR)
      • Left Rear Door Ajar Switch (DOOR_SW_LR)
      • Passenger Door Ajar Switch Status (DOOR_SW_PSGR)
      • Right Rear Door Ajar Switch (DOOR_SW_RR)

    Does the PID indicate the door is closed? 

    Yes  REMOVE the fused jumper wire. INSTALL a new door latch for the latch in question. REFER to Handles, Locks, Latches and Entry Systems .
    No  REMOVE the fused jumper wire. GO to  E6.

  6. E6 BYPASS THE DOOR LATCH GROUND CIRCUIT

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      Suspect Door Ajar Switch, LF C526-2
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Ground
      Suspect Door Ajar Switch, RF C602-2 Ground
      Suspect Door Ajar Switch, LR C715-2 Ground
      Suspect Door Ajar Switch, RR C820-2 Ground
    • Monitor the suspect BCM PIDs while opening and closing all the doors:
      • Drivers Door Ajar Switch Status (DOOR_SW_DRVR)
      • Left Rear Door Ajar Switch (DOOR_SW_LR)
      • Passenger Door Ajar Switch Status (DOOR_SW_PSGR)
      • Right Rear Door Ajar Switch (DOOR_SW_RR)

    Does the PID indicate the door is closed? 

    Yes  REMOVE the fused jumper wire. REPAIR door latch ground circuit in question for an open.
    No  REMOVE the fused jumper wire. GO to  E7.

  7. E7 CHECK THE SUSPECT DOOR AJAR SWITCH INPUT CIRCUIT FOR AN OPEN

    Is the resistance less than 3 ohms? 

    Yes  GO to  E18.
    No  REPAIR the door ajar input circuit in question.

  8. E8 BYPASS THE LIFTGATE GLASS LATCH

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Ignition OFF.
    • Disconnect: Liftgate Glass Latch C4040 .
    • Ignition ON.
    • Monitor the BCM Luggage Compartment Lid Ajar Switch (DOOR_SW_LUGG) PID.
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C4040-1
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C4040-3

    Does the PID indicate the liftgate is closed? 

    Yes  REMOVE the fused jumper wire. INSTALL a new liftgate glass latch. REFER to Handles, Locks, Latches and Entry Systems .
    No  REMOVE the fused jumper wire. GO to  E9.

  9. E9 CHECK THE LIFTGATE GLASS LATCH GROUND CIRCUIT

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Monitor the BCM Luggage Compartment Lid Ajar Switch (DOOR_SW_LUGG) PID.
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C4040-1
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Ground

    Does the PID indicate the liftgate is closed? 

    Yes  REMOVE the fused jumper wire. REPAIR the circuit.
    No  REMOVE the fused jumper wire. GO to  E10.

  10. E10 BYPASS THE LIFTGATE LATCH

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Ignition OFF.
    • Connect: Liftgate Glass Latch C4040 .
    • Disconnect: Liftgate Latch C457 .
    • Ignition ON.
    • Monitor the BCM Luggage Compartment Lid Ajar Switch (DOOR_SW_LUGG) PID.
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C457-4
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C457-2

    Does the PID indicate the liftgate is closed? 

    Yes  REMOVE the fused jumper wire. INSTALL a new liftgate latch. REFER to Handles, Locks, Latches and Entry Systems .
    No  REMOVE the fused jumper wire. GO to  E11.

  11. E11 CHECK THE LIFTGATE AJAR SWITCH TO LIFTGATE GLASS AJAR SWITCH CIRCUIT FOR AN OPEN

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C457-4
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Ground
    • Monitor the BCM Luggage Compartment Lid Ajar Switch (DOOR_SW_LUGG) PID.

    Does the PID indicate the liftgate is closed? 

    Yes  REMOVE the fused jumper wire. REPAIR the circuit.
    No  REMOVE the fused jumper wire. GO to  E12.

  12. E12 CHECK THE LIFTGATE AJAR BCM INPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C457-4
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C2280C-19

    Is the resistance less than 3 ohms? 

    Yes  GO to  E18.
    No  REPAIR the circuit.

  13. E13 BYPASS THE LIFTGATE GLASS LATCH

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Ignition OFF.
    • Disconnect: Liftgate Glass Latch C4040 .
    • Ignition ON.
    • Monitor the LTM Liftgate Glass Ajar Switch (GLASS_POS) PID.
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C4040-1
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C4040-3

    Does the PID indicate the liftgate glass is closed? 

    Yes  REMOVE the fused jumper wire. INSTALL a new liftgate glass latch. REFER to Handles, Locks, Latches and Entry Systems .
    No  REMOVE the fused jumper wire. GO to  E14.

  14. E14 CHECK THE LIFTGATE GLASS LATCH GROUND CIRCUIT

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Monitor the LTM Liftgate Glass Ajar Switch (GLASS_POS) PID.
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C4040-1
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Ground

    Does the PID indicate the liftgate glass is closed? 

    Yes  REMOVE the fused jumper wire. REPAIR the circuit.
    No  REMOVE the fused jumper wire. GO to  E15.

  15. E15 CHECK THE LIFTGATE GLASS AJAR LTM INPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4040-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4174B-18

    Is the resistance less than 3 ohms? 

    Yes  GO to  E19.
    No  REPAIR the circuit.

  16. E16 BYPASS THE LTM

    NOTE: If the jumper wire fails, refer to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

    • Ignition OFF.
    • Ignition ON.
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C4174B-2
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Ground
    • Monitor the BCM Luggage Compartment Lid Ajar Switch (DOOR_SW_LUGG) PID.

    Does the PID indicate the liftgate is closed? 

    Yes  REMOVE the fused jumper wire. GO to  E19.
    No  REMOVE the fused jumper wire. GO to  E17.

  17. E17 CHECK THE LIFTGATE AJAR BCM INPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174B-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C2280C-19

    Is the resistance less than 3 ohms? 

    Yes  GO to  E18.
    No  REPAIR the circuit.

  18. E18 CHECK FOR CORRECT BCM OPERATION

    • Disconnect the BCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • corrosion (install new connector or terminals - clean module pins)
      • pushed-out pins - install new pins as necessary
    • Reconnect the BCM connectors and make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, Refer to BCM Hardware Testing ..
    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. CLEAR the DTCs.

  19. E19 CHECK FOR CORRECT LTM OPERATION

    • Disconnect the LTM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • corrosion (install new connector or terminals - clean module pins)
      • pushed-out pins - install new pins as necessary
    • Reconnect the LTM connectors and make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new LTM. REFER to Body Closures .
    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. CLEAR the DTCs.
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