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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Door & Lock (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> Door Key Cylinder Switch >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

    1. Turn ignition switch OFF.
    2. Disconnect front door lock assembly LH connector.
    3. Check voltage between front door lock assembly LH harness connector and ground.
      (+) (-) Voltage
      (Approx.)
      Front door lock assembly LH
      Connector Terminal
      D14 5 Ground 5 V
      6

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    GO TO STEP 2  .

  2. CHECK DOOR KEY CYLINDER SWITCH SIGNAL CIRCUIT

    1. Disconnect main power window and door lock/unlock switch connector.
    2. Check continuity between main power window and door lock/unlock switch harness connector and front door lock assembly LH harness connector.
      Main power window and door lock/unlock switch Front door lock assembly LH Continuity
      Connector Terminal Connector Terminal
      D56 15 D14 6 Yes
      16 5
    3. Check continuity between power window main switch harness connector and ground.
      Main power window and door lock/unlock switch Ground Continuity
      Connector Terminal
      D56 15 No
      16

    Is the inspection result normal?

    YES 

    Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  3. CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT

    Check continuity between front door lock assembly LH harness connector and ground.

    Front door lock assembly LH Ground Continuity
    Connector Terminal
    D14 4 Yes

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair or replace harness.

  4. CHECK DOOR KEY CYLINDER SWITCH

    Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    Replace front door lock assembly LH. Refer to REMOVAL AND INSTALLATION .

  5. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    Inspection End.