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 .
- CHECK DOOR LOCK ACTUATOR INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect front door lock assembly LH connector.
- Check voltage between front door lock assembly LH harness connector and ground.
(+) (-) Condition Voltage
(Approx.)Front door lock assembly LH Connector Terminal D14 1 Ground Door lock and unlock switch Lock 12 V 2 Unlock Is the inspection result normal?
YES
Replace front door lock assembly LH. Refer to REMOVAL AND INSTALLATION .
NO
GO TO STEP 2 .
- CHECK DOOR LOCK ACTUATOR CIRCUIT
- Disconnect BCM, all door lock actuators and fuel lid door lock actuator connector.
- Check continuity between BCM harness connector and front door lock assembly LH harness connector.
BCM Front door lock assembly LH Continuity Connector Terminal Connector Terminal M81 135 D14 1 Yes 137 2 - Check continuity between BCM harness connector and ground.
BCM Ground Continuity Connector Terminal M81 135 No 137
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace harness.
- CHECK BCM OUTPUT SIGNAL
- Connect BCM connector.
- Check voltage between BCM harness connector and ground.
(+) (-) Condition Voltage
(Approx.)BCM Connector Terminal M81 135 Ground Door lock and unlock switch Lock 12 V 137 Unlock Is the inspection result normal?
YES
Check for internal short of each door lock actuator and fuel lid door lock actuator.
NO
Replace BCM. Refer to REMOVAL AND INSTALLATION .