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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 >> Neutral Switch >> LH >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK NEUTRAL SWITCH 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.

      (+)

      (-)

      Voltage

      (Approx.)

      Rear Door Closure Motor Assembly LH

      Connector

      Terminal

      D63

      3

      Ground

      5 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

  2. CHECK NEUTRAL SWITCH 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

      1

      D63

      3

      Existed

    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

      1

      Not existed

    Is the inspection result normal?

    YES

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

    NO

    Repair or replace harness.

  3. CHECK NEUTRAL SWITCH GROUND CIRCUIT 

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

    Rear Door Closure Motor Assembly LH

    Ground

    Continuity

    Connector

    Terminal

    D63

    4

    Existed

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace harness.

  4. CHECK NEUTRAL SWITCH 

    Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Replace Rear Door Closure Motor Assembly LH.

  5. CHECK INTERMITTENT INCIDENT 

    Refer to Intermittent Incident .

    INSPECTION END