Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. 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 HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect display unit connector M93 and AV control unit connector M171.

Check continuity between display unit harness connector M93 (A) terminal 8 and AV control unit harness connector M171 (B) terminal 45.

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M93	8	M171	45	Yes

Check continuity between display unit harness connector M93 (A) terminal 8 and ground.

A		-	Continuity
Connector	Terminal	-	Continuity
M93	8	Ground	No

Fig 1: Checking Continuity Between Display Unit Harness Connector And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Are continuity results as specified?

YES: GO TO 2.

NO: Repair harness or connector.

CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL

Connect display unit connector M93 and AV control unit connector M171.
Turn ignition switch ON.

Check signal between display unit harness connector M93 terminal 8 and ground.

(+)		(-)	Condition	Reference signal
Connector	Terminal	(-)	Condition	Reference signal
M93	8	Ground	Receive audio signal

Fig 2: Checking Signal Between Display Unit Harness Connector And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Are voltage readings as specified?

YES: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Replace display unit. Refer to "REMOVAL AND INSTALLATION ".