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 SPINDLE MOTOR INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect spindle unit LH connector.
- Check voltage between spindle unit LH harness connector and ground.
(+)
(-)
Condition
Voltage
(Approx.)
Spindle unit LH
Connector
Terminal
B70
9
Ground
Back door
Auto open operation
Battery voltage
2
Auto close operation
Is the inspection result normal?
YES
Replace spindle unit LH. Refer to Removal and Installation .
NO
GO TO 2.
- CHECK SPINDLE MOTOR CIRCUIT
- Disconnect automatic back door control module connector.
- Check continuity between automatic back door control module harness connector and spindle unit LH harness connector.
Automatic back door control module
Spindle unit LH
Continuity
Connector
Terminal
Connector
Terminal
B56
27
B70
9
Yes
34
2
- Check continuity between automatic back door control module harness connector and ground.
Automatic back door control module
Ground
Continuity
Connector
Terminal
B56
27
No
34
Is the inspection result normal?
YES
Replace automatic back door control module. Refer to Removal and Installation .
NO
Repair or replace harness.