Power Supply and Ground Circuit Check for A/C and AV Switch

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 A/C and AV switch are not blown.

FUSE CHECK CHART

Terminals		Power source	Fuse No.
Connector	Terminal (Wire color)	Power source	Fuse No.
M48	1 (Y)	Battery power	38
M48	2 (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
M48	1 (Y)	Ground	Battery voltage	Battery voltage	Battery voltage
M48	2 (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 A/C and AV switch and fuse.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect A/C and AV switch connector.

Check continuity between A/C and AV switch and ground as follows.

CONTINUITY CHECK CHART

Terminals			Ignition switch	Continuity
Connector	Terminal (Wire color)	Ground
M48	5 (B)		OFF	Yes

Fig 2: Checking Continuity Between A/C And AV Switch And Ground

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

OK or NG

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