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Sound Is Not Heard From Subwoofers (Base System)

WARNING: This page is about a different car, the 2004 Nissan Maxima. 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 TERMINAL SPECIFICATION

    Unit Terminals Signal name Fuse No.
    Subwoofer amp. 9 Ignition switch ACC or ON 4

    OK or NG

    1. OK: GO TO 2.
    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 amp. connector.
    2. Check voltage between the subwoofer amp. and ground.
    TERMINAL CONTINUITY SPECIFICATION

    Unit Terminal No. OFF ACC ON
    (+) (-)
    Connector Terminal (wire color)
    Subwoofer amp. B133 9 (W) Ground 0V Battery voltage Battery voltage

    OK or NG

    1. OK: GO TO 3.
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
    Fig 1: Checking Connector Housings For Disconnected Or Loose Terminals
    G03496204Courtesy of NISSAN MOTOR CO., U.S.A.
  3. GROUND CIRCUIT CHECK 

    Check continuity between subwoofer amp. harness connector B133 terminal 7 (B) and ground.

    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.
    Fig 2: Repairing Harness Or Connector
    G03496205Courtesy of NISSAN MOTOR CO., U.S.A.
  4. SUBWOOFER AMP. INPUT SIGNAL CHECK 
    1. Connect subwoofer amp. connector.
    2. Turn ignition switch to ACC.
    3. Check the signal subwoofer amp. harness connector terminal with CONSULT-II or oscilloscope.
    Fig 3: Terminal Continuity Specification
    G03496206Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 4: Checking Subwoofer Amp. Input Signal
    G03496207Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: GO TO 5.
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
  5. SUBWOOFER AMP. OUTPUT SIGNAL CHECK 
    1. Turn ignition switch to ACC.
    2. Check the signal subwoofer amp. harness connector terminal with CONSULT-II or oscilloscope.
    Fig 5: Terminal Continuity Specification
    G03496208Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 6: Checking Subwoofer Amp. Output Signal
    G03496209Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Replace woofer. Refer to , "REMOVAL AND INSTALLATION OF SUBWOOFER (BASE SYSTEM) ".
    2. NG: GO TO 6.
  6. HARNESS CHECK 
    1. Turn ignition switch to OFF.
    2. Disconnect subwoofer amp. connector and subwoofer connectors.
    3. Check continuity between subwoofer amp. harness connector terminal and subwoofer harness connector terminal.
      TERMINAL CONTINUITY SPECIFICATION

      Terminals Continuity
      Subwoofer amp. Subwoofer
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      B133 5 (L/Y) B26 - (L/Y) Yes
      6 (P) + (P)
      8 (B/Y) B126 - (B/Y)
      10 (O) + (O)
      Fig 7: Checking Harness
      G03496210Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between subwoofer amp. harness connector terminal and ground.
    TERMINAL CONTINUITY SPECIFICATION

    Terminals Continuity
    Subwoofer amp. -
    Connector Terminal (Wire color)
    B133 5 (L/Y) Ground No
    6 (P)
    8 (B/Y)
    10 (O)

    OK or NG

    1. OK: Replace subwoofer amp. Refer to , "REMOVAL AND INSTALLATION OF SUBWOOFER (BASE SYSTEM) ".
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
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