Sound Is Not Heard From Subwoofer (BOSE System)

WARNING: This page is about a different car, the 2005 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 NO SPECIFICATION TABLE

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
1. Disconnect subwoofer connector.
2. Check voltage between the subwoofer and ground.
  
  Fig 1: Checking Voltage Between Subwoofer Connector Terminal 6 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Connector B11 Terminal (Wire Color) Specification
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 3.
2. NG:
  - Check connector housings for disconnected or loose terminals.
  - Repair harness or connector.
GROUND CIRCUIT CHECK
Check continuity between subwoofer harness connector B11 terminal 5 (B) and ground.

Fig 3: Checking Continuity Between Subwoofer Harness Connector B11 Terminal 5 (B) & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Continuity should exist.

OK or NG
1. OK: GO TO 4.
2. NG:
  - Check connector housings for disconnected or loose terminals.
  - Repair harness or connector.
CHECK SUBWOOFER AMP. ON SIGNAL
Operate system and check voltage between subwoofer harness connector B11 terminal 4 (LG) and ground.

Fig 4: Checking Subwoofer AMP On Signal
Courtesy of NISSAN MOTOR CO., U.S.A.

Voltage: More than approx. 6.5V

OK or NG
1. OK: GO TO 5.
2. NG:
  - Check connector housings for disconnected or loose terminals.
  - Repair harness or connector.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connector and subwoofer connectors.
2. Check continuity between BOSE speaker amp. harness connector terminal and subwoofer harness connector terminal.
  
  Fig 5: Connector M113 Terminal (Wire Color) Specification
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Checking Continuity Between Ground & Bose Speaker AMP Harness Connector Terminals & Subwoofer Harness Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between BOSE speaker amp. harness connector terminal and ground.
  
  Fig 7: Connector M113 Terminal Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG:
  - Check connector housings for disconnected or loose terminals.
  - Repair harness or connector.
SUBWOOFER SIGNAL CHECK
1. Connect BOSE speaker amp. connector and subwoofer connector.
2. Turn ignition switch to ACC.
3. Check the signal between BOSE speaker amp. harness connector terminals with CONSULT-II or oscilloscope.
  
  Fig 8: Terminal Signal Reference Graph
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 9: Checking Subwoofer Signal
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Replace subwoofer. Refer to "REMOVAL AND INSTALLATION OF SUBWOOFER (BOSE SYSTEM) ".
2. NG: Replace BOSE speaker amp. Refer to "REMOVAL AND INSTALLATION OF BOSE SPEAKER AMP. "