Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX70. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM SELF - DIAGNOSIS

Perform self - diagnosis function. Refer to DIAGNOSIS DESCRIPTION (WITHOUT ACCS) or DIAGNOSIS DESCRIPTION (WITH ACCS).

Is the inspection result normal?

YES

GO TO STEP 5 .

NO

GO TO STEP 2 .

CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

Check voltage between air mix door motor (driver side) harness connector and ground.

(+)		(-)	Voltage (Approx.)
Air mix door motor (driver side)		-
Connector	Terminal	-
M252	1	Ground	12 V

Is the inspection result normal?

YES

GO TO STEP 3 .

Repair harness or connector.

CHECK SIGNAL FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

Confirm A/C LAN signal between air mix door motor (driver side) harness connector and ground using an oscilloscope.

(+)		(-)	Voltage
Air mix door motor (driver side)		-
Connector	Terminal	-
M252	3	Ground	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

GO TO STEP 4 .

Repair harness or connector.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT

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

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

Air mix door motor (driver side)		-		Continuity
Connector	Terminal	-		Continuity
M252	2	Ground		Existed

Is the inspection result normal?

YES

Replace air mix door motor (driver side).

Repair harness or connector.

CHECK INSTALLATION OF AIR MIX DOOR MOTOR (DRIVER SIDE)

Check air mix door motor is properly installed (driver side). Refer to EXPLODED VIEW WITH TORQUE SPECIFICATIONS .

Is it installed normally?

YES

INSPECTION END

NO

Repair or replace air mix door motor (driver side).