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Home >> Infiniti >> 2016 >> Q50 Base, RWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door & Lock (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Fuel Filler Lid Lock Actuator >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUEL FILLER LID LOCK ACTUATOR INPUT SIGNAL

    1. Turn ignition switch OFF.
    2. Disconnect fuel filler lid lock actuator connector.
    3. Check voltage between fuel filler lid lock actuator harness connector and ground.
    (+) (-) Condition Voltage
    Fuel filler lid lock actuator
    Connector Terminal
    B76 1 Ground Door lock and unlock switch Unlock 9 - 16 V
    2 Lock

    Is the inspection result normal?

    YES 

    Replace fuel filler lid lock actuator.

    NO 

    GO TO STEP 2  .

  2. CHECK FUEL FILLER LID LOCK ACTUATOR CIRCUIT

    1. Disconnect BCM, front door lock assembly (driver side) and front door lock assembly (passenger side) connector.
    2. Check continuity between BCM harness connector and fuel filler lid lock actuator harness connector.
      BCM Fuel filler lid lock actuator Continuity
      Connector Terminal Connector Terminal
      M17 135 B76 2 Existed
      137 1
    3. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M17 135 Not existed
      137

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK BCM OUTPUT SIGNAL

    1. Connect BCM connector.
    2. Check voltage between BCM harness connector and ground.
    (+) (-) Condition Voltage
    BCM
    Connector Terminal
    M17 135 Ground Door lock and unlock switch Lock 9 - 16 V
    137 Unlock

    Is the inspection result normal?

    YES 

    Check for internal short of front door lock actuators and fuel filler lid lock actuator.

    NO 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

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