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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 >> Door Request Switch >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK DOOR REQUEST SWITCH INPUT SIGNAL 
    1. Turn Ignition Switch OFF.
    2. Disconnect malfunctioning front outside handle assembly connector.
    3. Check voltage between malfunctioning front outside handle assembly harness connector and ground.

      (+)

      (-)

      Voltage

      (Approx.)

      Front outside handle assembly (request switch)

      Connector

      Terminal

      LH

      D17

      1

      Ground

      12 V

      RH

      D47

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

  2. CHECK DOOR REQUEST SWITCH CIRCUIT 
    1. Disconnect BCM connector.
    2. Check continuity between BCM harness connector and malfunctioning front outside handle assembly harness connector.

      BCM

      Front outside handle assembly (request switch)

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M123

      75

      LH

      D17

      1

      Existed

      76 (Models with steering lock unit)

      RH

      D47

      100 (Models without steering lock unit)

    3. Check continuity between BCM harness connector and ground.

      BCM

      Ground

      Continuity

      Connector

      Terminal

      M123

      75

      Not existed

      76 (Models with steering lock unit)

      100 (Models without steering lock unit)

    Is the inspection result normal?

    YES

    Replace BCM. Refer to Removal and Installation .

    NO

    Repair or replace harness.

  3. CHECK DOOR REQUEST SWITCH GROUND CIRCUIT 

    Check continuity between malfunctioning front outside handle assembly harness connector and ground.

    Front outside handle assembly (request switch)

    Ground

    Continuity

    Connector

    Terminal

    LH

    D17

    2

    Existed

    RH

    D47

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace harness.

  4. CHECK DOOR REQUEST SWITCH 

    Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Replace malfunctioning front outside handle assembly.

  5. CHECK INTERMITTENT INCIDENT 

    Refer to Intermittent Incident .

    INSPECTION END