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 LH POWER SUPPLY
- Turn ignition switch ON.
- Check voltage between air mix door motor LH harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Air mix door motor LH
Connector
Terminal
M228
1
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 2 .
NO
GO TO 4 .
- CHECK AIR MIX DOOR MOTOR LH GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect air mix door motor LH connector.
- Check continuity between air mix door motor LH harness connector and ground.
Air mix door motor LH
(-)
Continuity
Connector
Terminal
M228
2
Ground
Yes
Is the inspection result normal?
YES
GO TO 3 .
NO
Repair harness or connector.
- CHECK INSTALLATION OF AIR MIX DOOR MOTOR LH
Check air mix door motor LH is properly installed. Refer to Exploded View .
Is the inspection result normal?
YES
Replace air mix door motor LH. Refer to Removal and Installation - Air Mix Door Motor LH .
NO
Repair or replace malfunctioning part.
- CHECK AIR MIX DOOR MOTOR LH POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect air mix door motor LH connector and A/C auto amp. connector.
- Check continuity between air mix door motor LH harness connector and A/C auto amp. harness connector.
Air mix door motor LH
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M228
1
M137
17
Yes
Is the inspection result normal?
YES
Replace A/C auto amp. Refer to Removal and Installation .
NO
Repair harness or connector.