Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect display unit connector M93 and display control unit connector M95.

Check continuity between display unit harness connector M93 (A) terminal 8 and display control unit harness connector M95 (B) terminal 55.

CONTINUITY CHART

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M93	8	M95	55	Yes

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

CONNECTOR TERMINAL CONTINUITY CHART

A		-	Continuity
Connector	Terminal	-	Continuity
M93	8	Ground	No

Fig 1: Checking Continuity Between Display Unit Harness Connector M93 Terminal 8 And Ground

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

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 display control unit connector M95.
Turn ignition switch ON.
Check signal between display unit harness connector M93 terminal 8 and ground.

Fig 2: Checking Signal Between Display Unit Harness Connector Terminal 8 And Ground

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

SIGNAL CHART

(+)		(-)	Condition	Reference signal
Connector	Terminal	(-)	Condition	Reference signal
M93	8	Ground	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.

Are voltage readings as specified?

Yes: Replace display control unit. Refer to , "REMOVAL AND INSTALLATION "

No: Replace display unit. Refer to , "REMOVAL AND INSTALLATION "