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 BACK DOOR CLOSURE MOTOR INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect back door lock assembly connector.
- Check voltage between back door lock assembly harness connector and ground.
(+) (-) Condition Voltage
(Approx.)Back door lock assembly Connector Terminal D557 1 Ground Back door Open operation Battery voltage Other than above 0 V 2 Close operation Battery voltage Other than above 0 V
Is the inspection result normal?
YES
Replace back door lock assembly. Refer to REMOVAL AND INSTALLATION .
NO
GO TO STEP 2 .
- CHECK BACK DOOR CLOSURE MOTOR 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 B56 31 D557 1 Yes 38 2 - Check continuity between automatic back door control module harness connector and ground.
Automatic back door control module Ground Continuity Connector Terminal B56 31 No 38
Is the inspection result normal?
YES
Replace automatic back door control module. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness.