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Audio System: Inspection

  1. INSPECT POWER AMPLIFIER CIRCUIT 

    Disconnect the connector from power amplifier and inspect the connector on the wire harness side.

    Fig 1: Identifying Power Amplifier Connector Terminals
    G02827709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    POWER AMPLIFIER CONNECTOR TERMINALS CONTINUITY SPECIFICATION

    Tester connection Condition Specified condition
    12 - Ground Constant Continuity
    13 - Ground Constant Continuity
    7 - Ground Constant Battery voltage
    16 - Ground Constant Battery voltage

    If the circuit is not as specified, inspect the circuits connected to other parts.

  2. INSPECT REAR SEAT AUDIO CIRCUIT 

    Disconnect the connector from RSA controller and inspect the connector on the wire harness side.

    Fig 2: Identifying Rear Seat Audio Connector Terminals
    G02827710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    REAR SEAT AUDIO CONNECTOR TERMINALS CONTINUITY SPECIFICATION

    Tester connection Condition Specified condition
    17 - Ground Constant Continuity
    24 - Ground Ignition switch LOCK and radio switch ON No voltage
    24 - Ground Ignition switch ACC or ON and radio switch ON Battery voltage
    12 - Ground Constant Battery voltage

    If the circuit is not as specified, inspect the circuits connected to other parts.

  3. INSPECT DVD CHANGER CIRCUIT 

    Disconnect the connector from DVD changer and inspect the connector on the wire harness side.

    Fig 3: Identifying DVD Changer Connector Terminals
    G02827711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    DVD CHANGER CONNECTOR TERMINAL CONTINUITY SPECIFICATION

    Tester connection Condition Specified condition
    20 - Ground Constant Continuity
    1 - Ground Ignition switch LOCK No voltage
    1 - Ground Ignition switch ACC or ON Battery voltage
    10 - Ground Constant Battery voltage

    If the circuit is not as specified, inspect the circuits connected to other parts.

  4. INSPECT RADIO RECEIVER ASSEMBLY CIRCUIT 

    Disconnect the connectors from the radio receiver assembly, and inspect the connector on the wire harness side.

    Fig 4: Identifying Radio Receiver Assembly Connector Terminals
    G02827712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    RADIO RECEIVER ASSY CONNECTOR TERMINAL CONTINUITY SPECIFICATION

    Tester connection Condition Specified condition
    A20 - Ground Constant Continuity
    A1 - Ground Constant Battery voltage
    A11 - Ground Ignition switch LOCK No voltage
    A11 - Ground Ignition switch ACC or ON Battery voltage

    If the circuit is not as specified, inspect the circuits connected to other parts.

    HINT:

    Check the wire harness between radio receiver assembly and the CD auto changer, between radio receiver assembly and power amplifier.

  5. INSPECT STEERING PAD SWITCH CIRCUIT 

    Disconnect the connectors from the steering pad switch, and inspect the connector on the wire harness side.

    Fig 5: Identifying Steering Pad Switch Connector Terminals
    G02827713Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    STEERING PAD SWITCH CONNECTOR TERMINAL CONDITION SPECIFICATION

    Tester connection Condition Specified condition
    AU1 - EAU Do not switch position Approx. 100 kΩ
    AU1 - EAU SEEK+ switch: push 0Ω
    AU1 - EAU SEEK- switch: push Approx. 0.3Ω
    AU1 - EAU VOL+ switch: push Approx. 1kΩ
    AU1 - EAU VOL- switch: push Approx. 3.2 kΩ
    AU2 - EAU Do not switch position Approx. 100 kΩ
    AU2 - EAU MODE switch: push 0Ω

    If the circuit is not as specified, inspect the circuits connected to other parts.

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