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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock (Diagnostic Trouble Codes (DTCS), Symptom Tests And R & I) >> DTC/Circuit Diagnosis >> Fuel Lid Lock Actuator >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUEL LID LOCK ACTUATOR INPUT SIGNAL

    1. Turn ignition switch OFF.
    2. Disconnect fuel lid lock actuator connector.
    3. Check voltage between fuel lid lock actuator harness connector and ground.
      (+) (-) Condition Voltage
      (Approx.)
      Fuel lid lock actuator
      Connector Terminal
      B19 1 Ground Door lock and unlock switch Unlock 12 V
      2 Lock

    Is the inspection result normal?

    YES 

    Replace fuel lid lock actuator.

    NO 

    GO TO STEP 2  .

  2. CHECK FUEL LID LOCK ACTUATOR CIRCUIT

    1. Disconnect BCM, all door lock actuators connector.
    2. Check continuity between BCM harness connector and fuel lid lock actuator harness connector.
      BCM Fuel lid lock actuator Continuity
      Connector Terminal Connector Terminal
      M70 65 B19 2 Existed
      66 1
    3. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M70 65 Not existed
      66

    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
    (Approx.)
    BCM
    Connector Terminal
    M70 65 Ground Door lock and unlock switch Lock 12 V
    66 Unlock

    Is the inspection result normal?

    YES 

    Check for internal short of each door lock actuator.

    NO 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .