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.
- CHECK AIR MIX DOOR MOTOR COMMUNICATION SIGNAL
- Turn ignition switch ON.
- Check output waveform between air mix door motor harness connector and ground with oscilloscope.
(+)
(-)
Output waveform
Air mix door motor
Connector
Terminal
M230
3
Ground
Is the inspection result normal?
YES
GO TO 2 .
NO
GO TO 3 .
- CHECK INSTALLATION OF AIR MIX DOOR MOTOR
Check air mix door motor is properly installed. Refer to Exploded View .
Is the inspection result normal?
YES
Replace air mix door motor. Refer to Removal and Installation - Air Mix Door Motor .
NO
Repair or replace malfunctioning part.
- CHECK AIR MIX DOOR MOTOR COMMUNICATION SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect air mix door motor connector and front air control connector.
- Check continuity between air mix door motor harness connector and front air control harness connector.
Air mix door motor
Front air control
Continuity
Connector
Terminal
Connector
Terminal
M230
3
M132
12
Yes
Is the inspection result normal?
YES
Replace front air control. Refer to Removal and Installation .
NO
Repair harness or connector.