Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If all door motor DTCs are detected, check this circuit.
- CHECK EACH DOOR MOTOR COMMUNICATION SIGNAL
- Turn ignition switch ON.
- Check output waveform between front air control harness connector and ground with oscilloscope.
(+)
(-)
Output waveform
Front air control
Connector
Terminal
M132
12
Ground
Is the inspection result normal?
YES
GO TO 2 .
NO
GO TO 3 .
- CHECK EACH DOOR MOTOR COMMUNICATION SIGNAL CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Disconnect front air control connector and intake door motor connector.
- Check continuity between front air control harness connector and intake door motor harness connector.
Front air control
Intake door motor
Continuity
Connector
Terminal
Connector
Terminal
M132
12
M227
3
Yes
Is the inspection result normal?
YES
Inspection End.
NO
Repair harness or connector.
- CHECK EACH DOOR MOTOR COMMUNICATION SIGNAL CIRCUIT FOR SHORT
- Disconnect following connectors:
- Air mix door motor
- Mode door motor
- Check continuity between front air control harness connector and ground.
Front air control
(-)
Continuity
Connector
Terminal
M132
12
Ground
No
Is the inspection result normal?
YES
Replace front air control. Refer to Removal and Installation .
NO
Repair harness or connector.
- Disconnect following connectors: