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Home >> Infiniti >> 2021 >> Q50 Signature Edition, AWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock (Diagnostics) >> Component/Circuit Diagnosis >> Trunk Lid Opener Actuator >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK TRUNK LID OPENER INPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect trunk lid lock assembly connector.
    3. Check voltage between trunk lid lock assembly harness connector and ground.

    (+)

    (-)

    Condition

    Voltage

    Trunk lid lock assembly

    Connector

    Terminal

    T53

    3

    Ground

    Trunk lid opener switch is pressed

    9 - 16 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

  2. CHECK TRUNK LID OPENER ACTUATOR CIRCUIT 
    1. Disconnect BCM connector.
    2. Check continuity between BCM harness connector and trunk lid lock assembly harness connector.

      BCM

      Trunk lid lock assembly

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M15

      91

      T53

      3

      Existed

    3. Check continuity between BCM harness connector and ground.

      BCM

      Ground

      Continuity

      Connector

      Terminal

      M15

      91

      Not existed

    Is the inspection result normal?

    YES

    Replace BCM. Refer to BCM : Removal & Installation .

    NO

    Repair or replace harness.

  3. CHECK TRUNK LID OPENER ACTUATOR GROUND CIRCUIT 

    Check continuity between trunk lid lock assembly harness connector and ground.

    Trunk lid lock assembly

    Ground

    Continuity

    Connector

    Terminal

    T53

    2

    Existed

    Is the inspection normal?

    YES

    Replace trunk lid lock assembly.

    NO

    Repair or replace harness.