Power Supply and Ground Circuit Check for Display Control Unit

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE

Make sure the following fuses of the display control unit are not blown.

FUSE CHECK CHART

Terminals		Power source	Fuse No.
Connector	Terminal (Wire color)	Power source	Fuse No.
M42	1 (Y)	Battery power	38
M42	10 (P/B)	ACC power	6

OK or NG

OK: GO TO 2.
NG: If fuse is blown, be sure to eliminate case of malfunction before installing new fuse. Refer to "POWER DISTRIBUTION " .

CHECK POWER SUPPLY CIRCUIT

Check voltage between connector terminals and ground as follows.

VOLTAGE CHECK CHART

Terminals			Ignition switch position
(+)		(-)	OFF	ACC	ON
Connector	Terminal (Wire color)	(-)	OFF	ACC	ON
M42	1 (Y)	Ground	Battery voltage	Battery voltage	Battery voltage
M42	10 (P/B)	Ground	0V	Battery voltage	Battery voltage

Fig 1: Checking Voltage Between Connector Terminals And Ground

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

OK or NG

OK: GO TO 3.
NG: Check harness for open or short between display control unit and fuse.

CHECK GROUND CIRCUIT

Check continuity between the following display control unit and ground.

CONTINUITY CHART

Terminals			Ignition switch	Continuity
Connector	Terminal (Wire color)	Ground
M42	3 (B)		OFF	Yes

Fig 2: Checking Continuity Between Display Control Unit And Ground

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

OK: INSPECTION END.
NG: Repair or replace harness.