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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 919 (Audio, Visual, Navigation System (BOSE Audio) (Without Navigation)) >> DTC/Circuit Diagnosis >> Amp On Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK AMP ON SIGNAL (BOSE SPEAKER AMP) 
    1. Turn audio system ON.
    2. Check voltage between BOSE speaker amp. harness connector M113 terminal 31 and ground.
      (+) (-) ACC
      Connector Terminal
      M113 31 Ground Battery voltage
      Fig 1: Checking Voltage Between Bose Speaker Amp. Harness Connector M113 Terminal 31 And Ground
      G08698232Courtesy of NISSAN NORTH AMERICA, INC.

      Is battery voltage present? 

      YES: Inspection End.

      NO: GO TO 2.

  2. CHECK AMP ON SIGNAL (AV CONTROL UNIT) 

    Check voltage between AV control unit harness connector M72 terminal 110 and ground.

    (+) (-) ACC
    Connector Terminal
    M72 110 Ground Battery voltage

    Is battery voltage present? 

    YES: Repair harness or connector.

    NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".

    Fig 2: Checking Voltage Between AV Control Unit Harness Connector M72 Terminal 110 And Ground
    G08698233Courtesy of NISSAN NORTH AMERICA, INC.