Sound Is Not Heard From Subwoofer (BOSE System)

WARNING: This page is about a different car, the 2008 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE

Check that the following fuse is not blown.

FUSE SPECIFICATION

Unit	Terminal	Signal name	Fuse No.
Subwoofer	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 subwoofer connector.

Check voltage between the subwoofer and ground.

TERMINALS VOLTAGE CHART

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

OK or NG

OK: GO TO 3.

NG >>

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

Fig 1: Checking Voltage Between Subwoofer And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Check continuity between subwoofer harness connector B11 terminal 5 and ground.
  Continuity should exist.
OK or NG

OK: GO TO 4.

NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
  
  Fig 2: Checking Continuity Between Subwoofer Connector Terminal 5 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK SUBWOOFER AMP. ON SIGNAL
1. Connect subwoofer connector.
2. Turn ignition switch to ACC.
3. Operate system and check voltage between subwoofer harness connector B11 terminal 4 and ground.
  Voltage : More than approx. 6.5V
OK or NG

OK: GO TO 5.

NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
  
  Fig 3: Checking Voltage Between Subwoofer Harness Connector Terminal 4 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.

HARNESS CHECK

Turn ignition switch OFF.
Disconnect BOSE speaker amp. connector and subwoofer connectors.

Check continuity between BOSE speaker amp. harness connector terminal and subwoofer harness connector terminal.

TERMINALS CONTINUITY CHART

Terminals				Continuity
BOSE speaker amp.		Subwoofer
Connector	Terminal	Connector	Terminal
M113	3	B11	1	Yes
M113	19	B11	2	Yes

Check continuity between BOSE speaker amp. harness connector terminal and ground.

Fig 4: Checking Continuity Between Bose Speaker Amp Connector Terminal And Subwoofer Connector Terminal

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

TERMINALS CONTINUITY CHART

Terminals			Continuity
BOSE speaker amp.		-
Connector	Terminal	-
M113	3	Ground	No
M113	19	Ground	No

OK or NG

OK: GO TO 6.

NG >>

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

SUBWOOFER SIGNAL CHECK

Connect BOSE speaker amp. connector and subwoofer connector.
Turn ignition switch to ACC.

Check the signal between BOSE speaker amp. harness connector terminals with CONSULT-II or oscilloscope.

TERMINALS SIGNAL REFERENCE CHART

Terminals				Condition	Reference signal
(+)		(-)
Connector	Terminal	Connector	Terminal
M113	19	M113	3	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Signal Between Bose Speaker Amp. Harness Connector Terminals

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

OK or NG

OK: Replace subwoofer. Refer to "BOSE SUBWOOFER ".

NG: Replace BOSE speaker amp. Refer to "BOSE SPEAKER AMP. ".