Diagnosis Procedure

WARNING: This page is about a different car, the 2010 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 RGB (B: BLUE) SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect display unit connector M93 and AV control unit connector M44.

Check continuity between display unit harness connector M93 (A) terminal 18 and AV control unit harness connector M44 (B) terminal 38.

Fig 1: Checking Continuity Between Display Unit Harness Connector M93 Terminal 18 And AV Control Unit Harness Connector M44 Terminal 38

Courtesy of NISSAN MOTOR CO., U.S.A.

CONTINUITY CHART

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M93	18	M44	38	Yes

Check continuity between display unit harness connector M93 (A) terminal 18 and ground.

CONTINUITY CHART

A		-	Continuity
Connector	Terminal	-	Continuity
M93	18	Ground	No

Are continuity results as specified?

YES: GO TO 2.

NO: Repair harness or connector.

CHECK RGB (B: BLUE) SIGNAL

Connect display unit connector M93 and AV control unit connector M44.
Turn ignition switch ON.

Check signal between display unit harness connector M93 terminal 18 and ground.

SIGNAL REFERENCE

(+)		(-)	Condition	Reference signal
Connector	Terminal	(-)	Condition	Reference signal
M93	18	Ground	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Signal Between Display Unit Harness Connector M93 Terminal 18 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

Are voltage readings as specified?

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

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