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 HALF LATCH SWITCH INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect back door lock assembly connector.
- Check voltage between back door lock assembly harness connector and ground.
(-) (-) Voltage
(Approx.)Back door lock assembly Connector Terminal D557 6 Ground Battery voltage
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
GO TO STEP 2 .
- CHECK HALF LATCH SWITCH CIRCUIT
- Disconnect automatic back door control module connector.
- Check continuity between automatic back door control module harness connector and back door lock assembly harness connector.
Automatic back door control module Back door lock assembly Continuity Connector Terminal Connector Terminal B55 3 D557 6 Yes - Check continuity between automatic back door control module harness connector and ground.
Automatic back door control module Ground Continuity Connector Terminal B55 3 No
Is the inspection result normal?
YES
Replace automatic back door control module. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness.
- CHECK HALF LATCH SWITCH GROUND CIRCUIT
Check continuity between back door lock assembly harness connector and ground.
Back door lock assembly Ground Continuity Connector Terminal D557 8 Yes Is the inspection result normal?
YES
GO TO STEP 4 .
NO
Repair or replace harness.
- CHECK HALF LATCH SWITCH
Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES
GO TO STEP 5 .
NO
Replace back door lock assembly. Refer to REMOVAL AND INSTALLATION .
- CHECK INTERMITTENT INCIDENT
Refer to INTERMITTENT INCIDENT .
Inspection End.