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 AIR MIX DOOR MOTOR (REAR) COMMUNICATION SIGNAL
- Turn ignition switch ON.
- Check output waveform between air mix door motor (rear) harness connector and ground with the oscilloscope.
+ - Output waveform Air mix door motor (rear) Connector Terminal M132 2 Ground
Is the inspection result normal?
YES
GO TO STEP 2 .
NO
GO TO STEP 3 .
- CHECK INSTALLATION OF AIR MIX DOOR MOTOR (REAR)
Check air mix door motor (rear) is properly installed. Refer to EXPLODED VIEW .
Is the inspection result normal?
YES
Replace air mix door motor (rear). Refer to REMOVAL AND INSTALLATION - AIR MIX DOOR MOTOR (REAR) .
NO
Repair or replace malfunctioning part.
- CHECK AIR MIX DOOR MOTOR (REAR) COMMUNICATION SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect air mix door motor (rear) and A/C auto amp. connector.
- Check continuity between air mix door motor (rear) harness connector and A/C auto amp. harness connector.
Air mix door motor (rear) A/C auto amp. Continuity Connector Terminal Connector Terminal M132 2 M50 16 Yes
Is the inspection result normal?
YES
Replace A/C auto amp. Refer to REMOVAL AND INSTALLATION .
NO
Repair harness or connector.