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 FUEL LID DOOR LOCK ACTUATOR INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect fuel lid door lock actuator connector.
- Check voltage between fuel lid door lock actuator harness connector and ground.
(+) (-) Condition Voltage
(Approx.)Fuel lid door lock actuator Connector Terminal B20 1 Ground Door lock and unlock switch Unlock 12 V 2 Lock
Is the inspection result normal?
YES
Replace fuel lid door lock actuator. Refer to REMOVAL AND INSTALLATION .
NO
GO TO STEP 2 .
- CHECK FUEL LID DOOR LOCK ACTUATOR CIRCUIT
- Disconnect BCM, all door lock actuators connector.
- Check continuity between BCM harness connector and fuel lid door lock actuator harness connector.
BCM Fuel lid door lock actuator Continuity Connector Terminal Connector Terminal M81 135 B20 2 Yes 137 1 - 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.
NO
Replace BCM. Refer to REMOVAL AND INSTALLATION .