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Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock (Except Hybrid) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Automatic Back Door Control Unit >> AUTOMATIC BACK DOOR CONTROL UNIT: Diagnosis Procedure

AUTOMATIC BACK DOOR CONTROL UNIT: Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK FUSIBLE LINK 

    Check that the following fusible link is not open.

    Fusible link No. Signal name
    N (40A) Battery power supply

    Is the fusible link open? 

    YES: Replace the open fusible link after repairing the affected circuit.

    NO: GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect automatic back door control module connector.
    3. Check voltage between automatic back door control module harness connector and ground.
      (+) (-) Voltage
      Automatic back door control module
      Connector Terminal
      B56 25 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair or replace harness.

  3. CHECK GROUND CIRCUIT 

    Check continuity between automatic back door control module harness connector and ground.

    Automatic back door control module Ground Continuity
    Connector Terminal
    B56 32 Yes
    28
    B55 4 (except Mexico)

    Does continuity exist? 

    YES: Inspection End.

    NO: Repair or replace harness.