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 MODE DOOR MOTOR (FRONT) COMMUNICATION SIGNAL

Turn ignition switch ON.

Check output waveform between mode door motor (front) harness connector and ground with the oscilloscope.

+		-	Output waveform
Mode door motor (front)
Connector	Terminal
M129	2	Ground	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

GO TO STEP 2 .

GO TO STEP 3 .

CHECK INSTALLATION OF MODE DOOR MOTOR (FRONT)

Check mode door motor (front) is properly installed. Refer to EXPLODED VIEW .

Is the inspection result normal?

YES

Replace mode door motor (front). Refer to REMOVAL AND INSTALLATION - MODE DOOR MOTOR (FRONT) .

NO

Repair or replace malfunctioning part.

CHECK MODE DOOR MOTOR (FRONT) COMMUNICATION SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect mode door motor (front) and A/C auto amp. connector.

Check continuity between mode door motor (front) harness connector and A/C auto amp. harness connector.

Mode door motor (front)		A/C auto amp.		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M129	2	M50	16	Yes

Is the inspection result normal?

YES

Replace A/C auto amp. Refer to REMOVAL AND INSTALLATION .

Repair harness or connector.