Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE

Check for blown fuses.

FUSE REFERENCE TABLE

Power source	Fuse No.
Battery	34
Ignition switch ACC or ON	19

Is inspection result normal?

YES: GO TO 2.

NO: Be sure to eliminate cause of malfunction before installing new fuse.

CHECK POWER SUPPLY CIRCUIT

Check voltage between Display unit harness connector and ground.

VOLTAGE SPECIFICATION TABLE

Signal name	Connector No.	Terminal No.	Ignition switch position	Value (Approx.)
Battery power supply	M75	2	OFF	Battery voltage
ACC power supply	M75	3	ACC	Battery voltage

Is inspection result normal?

YES: GO TO 3.

NO: Check harness between Display unit and fuse.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect Display unit connector.

Check continuity between Display unit harness connector and ground.

CONTINUITY REFERENCE TABLE

Signal name	Connector No.	Terminal No.	Ignition switch position	Continuity
Ground	M75	1	OFF	Existed
Ground	M75	13	OFF	Existed

Is inspection result normal?

YES: INSPECTION END

NO: Repair harness or connector.