Power Supply Circuit Inspection

WARNING: This page is about a different car, the 2006 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES

Check that the following fuses are not blown.

FUSES REFERENCE CHART

Unit	Terminals	Signal name	Fuse No.
Audio unit	6	Battery power	31
Audio unit	10	Ignition switch ACC or ON	4
AV switch	1	Battery power	19
BOSE speaker amp. (with BOSE)	1	Battery power	31
Subwoofer (BOSE system)	6	Battery power	18

OK or NG

OK: GO TO 2.

NG: If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to , "POWER SUPPLY ROUTING CIRCUIT ".

POWER SUPPLY CIRCUIT CHECK

Disconnect audio unit, subwoofer (with BOSE) or BOSE speaker amp. (with BOSE) connector.

Check voltage between the audio unit and ground.

AUDIO UNIT AND GROUND

Unit	Terminal No.			OFF	ACC	ON
	(+)		(-)
	Connector	Terminal	(-)
Audio unit	M43	6	Ground	Battery voltage	Battery voltage	Battery voltage
Audio unit	M43	10	Ground	0V	Battery voltage	Battery voltage

Fig 1: Checking Voltage Between Audio Unit And Ground

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

Check voltage between subwoofer (BOSE system) and ground.

SUBWOOFER (BOSE SYSTEM) AND GROUND

Unit	Terminal No.			OFF	ACC	ON
	(+)		(-)
	Connector	Terminal	(-)
Subwoofer	B11	6	Ground	Battery voltage	Battery voltage	Battery voltage

Fig 2: Checking Voltage Between Subwoofer (Bose System) And Ground

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

Check voltage between BOSE speaker amp. (with BOSE) and ground.

BOSE SPEAKER AMP. (WITH BOSE) AND GROUND

Unit	Terminal No.			OFF	ACC	ON
	(+)		(-)
	Connector	Terminal	(-)
BOSE speaker amp.	M113	1	Ground	Battery voltage	Battery voltage	Battery voltage

Fig 3: Checking Voltage Between Bose Speaker Amp (With Bose) And Ground

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

OK or NG

OK: GO TO 3.

NG :

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

GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Check continuity between subwoofer (BOSE system) harness connector B11 terminal 5 and BOSE speaker amp. (with BOSE) harness connector M113 terminal 17 and ground.
  Continuity should exist.
Fig 4: Checking Continuity Between Subwoofer (BOSE System) And BOSE Speaker Amp. (With BOSE)
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Inspection End.

NG :
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.