BOSE SPEAKER AMP: Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE

Check for blown fuses.

FUSE SPECIFICATIONS

Unit	Terminals	Signal name	Fuse No.
BOSE speaker amp.	10	Battery power	25
BOSE speaker amp.	11	Battery power	26

Are the fuses OK?

YES: GO TO 2.

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

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect BOSE speaker amp connector.
Check voltage between BOSE speaker amp harness connector and ground.

CONNECTOR TERMINAL VOLTAGE CHART

(+)		(-)	Voltage (approx.)
Connector	Terminal	(-)	Voltage (approx.)
B110	10	Ground	Battery voltage
B110	11	Ground	Battery voltage

Fig 1: Checking Voltage Between Bose Speaker Amp Connector Terminal 10, 11 And Ground

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

Is battery voltage present?

YES: GO TO 3.

NO: Check harness between BOSE speaker amp and fuse.

CHECK GROUND CIRCUIT

Check continuity between BOSE speaker amp harness connector and ground.

CONNECTOR TERMINAL CONTINUITY CHART

(+)		(-)	Continuity
Connector	Terminal	(-)	Continuity
B110	7	Ground	Yes
B110	12	Ground	Yes

Fig 2: Checking Continuity Between Bose Speaker Amp Harness Connector And Ground

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

Does continuity exist?

YES: Inspection End.

NO: Repair harness or connector.