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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Rear Door Closure Motor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK REAR DOOR CLOSURE MOTOR INPUT SIGNAL 
    1. Turn Ignition Switch OFF.
    2. Disconnect Rear Door Closure Motor Assembly LH connector.
    3. Check voltage between Rear Door Closure Motor Assembly LH harness connector and ground.

      (+)

      (-)

      Condition

      Voltage

      (Approx.)

      Rear Door Closure Motor Assembly LH

      Connector

      Terminal

      D63

      1

      Ground

      Rear door LH

      Close operation

      Battery voltage

      Other than above

      0 V

      2

      Return signal

      Battery voltage

      Other than above

      0 V

    Is the inspection result normal?

    YES

    Replace Rear Door Closure Motor Assembly LH.

    NO

    GO TO 2.

  2. CHECK REAR DOOR CLOSURE MOTOR CIRCUIT 
    1. Disconnect Rear Door Closure Control Unit LH connector.
    2. Check continuity between Rear Door Closure Control Unit LH harness connector and Rear Door Closure Motor Assembly LH harness connector.

      Rear Door Closure Control Unit LH

      Rear Door Closure Motor Assembly LH

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      D65

      3

      D63

      1

      Existed

      9

      2

    3. Check continuity between Rear Door Closure Control Unit LH harness connector and ground.

      Rear Door Closure Control Unit LH

      Ground

      Continuity

      Connector

      Terminal

      D65

      3

      Not existed

      9

    Is the inspection result normal?

    YES

    Replace Rear Door Closure Control Unit LH. Refer to Removal and Installation .

    NO

    Repair or replace harness.