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 AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY

Turn ignition switch ON.
Check voltage between air mix door motor (passenger side) harness connector and ground.

+		-	Voltage (Approx.)
Air mix door motor (passenger side)
Connector	Terminal
M131	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 2.

GO TO 4.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect air mix door motor (passenger side) connector.

Check continuity between air mix door motor (passenger side) harness connector and ground.

Air mix door motor (passenger side)		--	Continuity
Connector	Terminal
M131	3	Ground	Yes

Is the inspection result normal?

YES

GO TO 3.

Repair harness or connector.

CHECK INSTALLATION OF AIR MIX DOOR MOTOR (PASSENGER SIDE)
Check air mix door motor (passenger side) is properly installed. Refer to Exploded View .

Is the inspection result normal?

YES

Replace air mix door motor (passenger side). Refer to Removal and Installation - Air Mix Door Motor (Passenger Side) .

NO

Repair or replace malfunctioning part.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect air mix door motor (passenger side) connector and A/C auto amp. connector.

Check continuity between air mix door motor (passenger side) harness connector and A/C auto amp. harness connector.

Air mix door motor (passenger side)		A/C auto amp.		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M131	1	M50	17	Yes

Is the inspection result normal?

YES

Replace A/C auto amp. Refer to Removal and Installation .

Repair harness or connector.