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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 480 (Handles, Locks, Latches And Entry Systems) >> Diagnosis And Testing >> Handles, Locks, Latches and Entry Systems - Without Intelligent Access (IA) >> Pinpoint Tests >> Pinpoint Test M : The Liftgate Glass Latch Release Is Inoperative >> Pinpoint Test M : The Liftgate Glass Latch Release Is Inoperative

Pinpoint Test M : The Liftgate Glass Latch Release Is Inoperative

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. M1 CHECK FOR BCM DTC C1017:11

    • Ignition ON.
    • Using a diagnostic scan tool, carry out the BCM self-test.

    Is DTC C1017:11 present? 

    Yes  GO to  M2.
    No  GO to  M4.

  2. M2 CHECK THE LIFTGATE GLASS RELEASE SWITCH

    • Ignition OFF.
    • Disconnect: Liftgate Glass Release Switch.
    • Ignition ON.
    • Using a diagnostic scan tool, clear the BCM DTCs.
    • Using a diagnostic scan tool, carry out the BCM self-test.

    Is DTC C1017:11 still present? 

    Yes  GO to  M3.
    No  INSTALL a new liftgate glass release switch. REFER to Liftgate Release Switch - Liftgate Window .

  3. M3 CHECK THE LIFTGATE GLASS RELEASE SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND

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

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  M12.
    No  REPAIR the circuit.

  4. M4 CHECK THE LIFTGLASS/TRUNK RELEASE (LIFTGLASS_R) PID

    • Using a diagnostic scan tool, view the BCM PIDs.
    • Using a diagnostic scan tool, monitor the BCM PID LIFTGLASS_R while pressing the liftgate glass release switch.

    Does the PID indicate the switch is pressed? 

    Yes  VERIFY the BCM fuse 25 (15A) is OK. If OK, GO to  M9.If not OK, REFER to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit fault.
    No  GO to  M5.

  5. M5 BYPASS THE LIFTGATE GLASS RELEASE SWITCH

    • Ignition OFF.
    • Disconnect: Liftgate Glass Release Switch.
    • Close the liftgate.
    • Unlock the doors using the door lock control switch.
    • Connect:
      Lead 1 Measurement / Action Lead 2
      Liftgate glass release switch pin 2, harness side
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Liftgate glass release switch pin 1, harness side
    • Remove the fused jumper wire.

    Does the liftgate glass latch release when the fused jumper wire is connected? 

    Yes  INSTALL a new liftgate glass release switch. REFER to Liftgate Release Switch - Liftgate Window .
    No  GO to  M6.

  6. M6 BYPASS THE LIFTGATE APPLIQUE JUMPER HARNESS

    • Disconnect: Liftgate Applique C4488 (Expedition).
    • Disconnect: Liftgate Applique C4352B (Navigator).
    • Close the liftgate.
    • Unlock the doors using the door lock control switch.
    • For Expedition, connect:
      Lead 1 Measurement / Action Lead 2
      C4488-8
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C4488-10
    • For Navigator, connect:
      Lead 1 Measurement / Action Lead 2
      C4352B-8
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C4352B-9
    • Remove the fused jumper wire.

    Does the liftgate glass latch release when the fused jumper wire is connected? 

    Yes  REPAIR or INSTALL a new liftgate applique jumper harness.
    No  GO to  M7.

  7. M7 CHECK THE LIFTGATE GLASS RELEASE SWITCH GROUND CIRCUIT FOR AN OPEN

    • For Expedition, connect:
      Lead 1 Measurement / Action Lead 2
      C4488-8
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Ground
    • For Navigator, connect:
      Lead 1 Measurement / Action Lead 2
      C4352B-8
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 Ground
    • Remove the fused jumper wire.

    Does the liftgate glass latch release when the fused jumper wire is connected? 

    Yes  REPAIR the circuit.
    No  GO to  M8.

  8. M8 CHECK THE LIFTGATE GLASS RELEASE SWITCH INPUT CIRCUIT FOR AN OPEN

    • For Expedition, measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-4
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4488-8
    • For Navigator, measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-4
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4352B-8

    Is the resistance less than 3 ohms? 

    Yes  GO to  M12.
    No  REPAIR the circuit.

  9. M9 CHECK FOR VOLTAGE TO THE LIFTGATE LATCH

    NOTE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

    • Ignition OFF.
    • Disconnect: Liftgate Glass Latch C4040 .
    • Ignition ON.
    • Unlock the doors using the door lock control switch.
    • Connect:
      Lead 1 Measurement / Action Lead 2
      C4040-4
      GFD134887Courtesy of FORD MOTOR COMPANY
      		 Ground
    • NOTE: The BCM only supplies voltage to the actuator momentarily. It is important to monitor the test lamp while pressing the liftgate glass release switch.

      Observe the test lamp while pressing the liftgate glass release switch.

    Does the test lamp momentarily illuminate? 

    Yes  GO to  M10.
    No  GO to  M11.

  10. M10 CHECK THE LIFTGATE LATCH GROUND CIRCUIT FOR AN OPEN

    NOTE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

    • Connect:
      Lead 1 Measurement / Action Lead 2
      C4040-4
      GFD134887Courtesy of FORD MOTOR COMPANY
      		 C4040-3
    • NOTE: The BCM only supplies voltage to the actuator momentarily. It is important to monitor the test lamp while pressing the liftgate glass release switch.

      Observe the test lamp while pressing the liftgate glass release switch.

    Does the test lamp momentarily illuminate? 

    Yes  INSTALL a new liftgate glass latch. REFER to Liftgate Latch - Window .
    No  REPAIR the circuit.

  11. M11 CHECK THE BCM LIFTGATE GLASS RELEASE OUTPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4040-4
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C2280D-28

    Is the resistance less than 3 ohms? 

    Yes  GO to  M12.
    No  REPAIR the circuit.

  12. M12 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, 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.
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