Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- 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
Battery voltage
2
Lock
Is the inspection result normal?
YES
Replace fuel lid door lock actuator. Refer to Removal and Installation .
NO
GO TO 2.
- CHECK FUEL LID DOOR LOCK ACTUATOR CIRCUIT
- Disconnect BCM and 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 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
Battery voltage
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 .