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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2085 (Audio, Visual, Navigation & Telephone System) >> Audio >> Sound Is Not Heard From Subwoofer (BOSE System)

Sound Is Not Heard From Subwoofer (BOSE System)

WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. 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 ".

  2. POWER SUPPLY CIRCUIT CHECK 
    1. Disconnect subwoofer connector.
    2. 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
      G04909089
  3. 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 B11 Terminal 5 And Ground
      G04909090
  4. 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 B11 Terminal 4 And Ground
      G04909091
  5. HARNESS CHECK 
    1. Turn ignition switch OFF.
    2. Disconnect BOSE speaker amp. connector and subwoofer connectors.
    3. 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
      19 B11 2
    4. 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
      G04909092
      TERMINALS CONTINUITY CHART

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

    OK or NG 

    OK: GO TO 6.

    NG >>

    • Check connector housings for disconnected or loose terminals.
    • Repair harness or connector.
  6. 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.
      TERMINALS SIGNAL REFERENCE CHART

      Terminals Condition Reference signal
      (+) (-)
      Connector Terminal Connector Terminal
      M113 19 M113 3 Receive audio signal
      G04904044
      Fig 5: Checking Signal Between Bose Speaker Amp. Harness Connector Terminals
      G04904141

    OK or NG 

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

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

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