DISPLAY UNIT: 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 - WITH NAVIGATION SYSTEM ".

CHECK FUSES

Check that the following display unit fuses are not blown.

Unit	Terminals	Signal name	Fuse No.
Display unit	2	Battery power	29
Display unit	3	Ignition switch ACC or ON	4

Are the fuses OK?

YES: GO TO 2

NO: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch to ACC

Check voltage between display unit harness connector M92 and ground.

Connector	Terminal	Ignition switch position	Value (Approx.)
M92	2	ACC	Battery voltage
M92	3	ACC	Battery voltage

Fig 1: Checking Voltage Between Display Unit Connector M92 Terminals 2, 3 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Does specified voltage exist?

YES: GO TO 3.

NO >>

Check connector housings for disconnected or loose terminals.
Repair harness or connector.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect display unit connector.

Check continuity between display unit harness connector M92 and ground.

(+)		(-)	Continuity
Connector	Terminal	(-)	Continuity
M92	1	Ground	Yes
M92	13	Ground	Yes

Fig 2: Checking Continuity Between Display Unit Connector M92 Terminals And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Does continuity exist?

YES: Inspection End.

NO: Repair harness or connector.