Power Supply and Ground Circuit Check for Display Control Unit

WARNING: This page is about a different car, the 2004 Nissan Armada. 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.

CONNECTOR TERMINALS FUSE

Terminals		Power source	Fuse No.
Connector	Terminal (Wire color)	Power source	Fuse No.
M94	1(Y)	Battery power	31
M94	10(O)	ACC power	4

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

Disconnect display control unit connector.
Check voltage between connector terminals and ground as follows.

CONNECTOR TERMINALS IGNITION SWITCH

Terminals			Ignition switch position
(+)		(-)	OFF	ACC	ON
Connector	Terminal (Wire color)	(-)	OFF	ACC	ON
M94	1 (Y)	Ground	Battery voltage	Battery voltage	Battery voltage
M94	10(O)	Ground	0V	Battery voltage	Battery voltage

Fig 1: Checking Voltage Between Display Control Unit And Around

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 around.

CONNECTOR TERMINALS CONTINUITY

Terminals			Continuity
		(+)		(-)
Connector	Terminal (Wire color)			(-)
M94	3(B)	Ground	OFF	Yes

OK or NG

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

Fig 2: Checking Continuity Between Display Control Unit And Around

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