Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

CHECK CONTINUITY RGB (R: RED) SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect display unit connector M93 and AV control unit connector M133.

Check continuity between display unit harness connector M93 (A) terminal 17 and AV control unit harness connector M133 (B) terminal 40.

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M93	17	M133	40	Yes

Fig 1: Checking Continuity Between Display Unit Connector M93 (A) Terminal 17 And AV Control Unit Connector M133 (B) Terminal 40

Courtesy of NISSAN NORTH AMERICA, INC.

Check continuity between display unit harness connector M93 (A) terminal 17 and ground.

A		-	Continuity
Connector	Terminal	-	Continuity
M93	17	Ground	No

Are the continuity results as specified?

YES: GO TO 2

NO: Repair harness or connector.

CHECK RGB (R: RED) SIGNAL

Connect display unit connector M93 and AV control unit connector M133.
Turn ignition switch ON.
Check signal between display unit harness connector M93 terminal 17 and ground.

Fig 2: Checking Signal Between Display Unit Harness Connector M93 Terminal 17 And Ground Using Oscilloscope

Courtesy of NISSAN NORTH AMERICA, INC.

(+)		(-)	Condition	Reference signal
Connector	Terminal	(-)	Condition	Reference signal
M93	17	Ground	Receive audio signal

Are the voltage readings as specified?

YES: Replace display unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".