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 UNLOCK SENSOR INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect front door lock assembly LH connector.
- Check signal between front door lock assembly LH harness connector and ground with oscilloscope.
(+) (-) Signal
(Reference value)Front door lock assembly LH Connector Terminal D14 3 Ground
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
GO TO STEP 2 .
- CHECK UNLOCK SENSOR CIRCUIT
- Disconnect BCM 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 M18 30 D14 3 Yes - Check continuity between BCM harness connector and ground.
BCM Ground Continuity Connector Terminal M18 30 No
Is the inspection result normal?
YES
Replace BCM. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness.
- CHECK UNLOCK SENSOR 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.
- CHECK UNLOCK SENSOR
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 .
- CHECK INTERMITTENT INCIDENT
Refer to INTERMITTENT INCIDENT .
Inspection End.