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Speaker Circuit: Procedure

  1. CHECK SPEAKER 
    RESULT

    Result Proceed to
    All speakers do not sound A
    A speaker does not sound B

    A → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

    B: Go to next step 

  2. CHECK SPEAKER 
    RESULT

    Result Proceed to
    Front No. 1 speaker does not sound A
    Front No. 2 speaker does not sound B
    Stereo component speaker does not sound C
    Rear speaker does not sound D
    Rear No. 2 speaker does not sound E

    E → See step   10 

    D → See step   8 

    C → See step   6 

    B → See step   4 

    A: Go to next step 

  3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Check that malfunction disappears when the speaker is replaced with a normal one.

      OK

      Malfunction disappears.

      HINT: 

      • Connect all connectors to speakers.
      • If the right front or left front speaker is suspected to be malfunctioning, inspect by interchanging the right front and left front speaker.

    NG → REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY 

    OK → END 

  4. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the S23 amplifier connector.
      Fig 1: Identifying Connector Terminals
      GTY156297Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the D15 or D16 speaker connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance

      Tester Connection Specified Condition
      S23-1 (TFR+) - D16-2 Below 1 Ω
      S23-14 (TFR-) - D16-1 Below 1 Ω
      S23-2 (TFL+) - D15-2 Below 1 Ω
      S23-15 (TFL-) - D15-1 Below 1 Ω
      S23-1 (TFR+) - Body ground 10 kΩ or higher
      S23-14 (TFR-) - Body ground 10 kΩ or higher
      S23-2 (TFL+) - Body ground 10 kΩ or higher
      S23-15 (TFL-) - Body ground 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Disconnect the D15 or D16 speaker connector.
      Fig 2: Identifying Connector Terminals
      GTY156340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance of the speaker.

      Standard resistance

      Tester Connection Specified Condition
      1 - 2 Approx. 5.4 Ω

    NG → REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 

    OK → REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY 

  6. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - STEREO COMPONENT SPEAKER) 
    1. Disconnect the S22 amplifier connector.
      Fig 3: Identifying Connector Terminals
      GTY141556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the W4 or W5 speaker connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance

      Tester Connection Specified Condition
      S22-1 (FR+) - W5-1 Below 1 Ω
      S22-8 (FR-) - W5-2 Below 1 Ω
      S22-2 (FL+) - W4-1 Below 1 Ω
      S22-9 (FL-) - W4-2 Below 1 Ω
      S22-1 (FR+) - Body ground 10 kΩ or higher
      S22-8 (FR-) - Body ground 10 kΩ or higher
      S22-2 (FL+) - Body ground 10 kΩ or higher
      S22-9 (FL-) - Body ground 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  7. INSPECT STEREO COMPONENT SPEAKER ASSEMBLY 
    1. Disconnect the W4 or W5 speaker connector.
      Fig 4: Identifying Connector Terminals
      GTY156298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance of the speaker.

      Standard resistance

      Tester Connection Specified Condition
      1 - 2 Approx. 8 Ω

    NG → REPLACE STEREO COMPONENT SPEAKER ASSEMBLY 

    OK → REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY 

  8. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR SPEAKER) 
    1. Disconnect the S22 amplifier connector.
      Fig 5: Identifying Connector Terminals
      GTY128184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the R10 or R11 speaker connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance

      Tester Connection Specified Condition
      S22-3 (RR+) - R11-1 Below 1 Ω
      S22-10 (RR-) - R11-2 Below 1 Ω
      S22-4 (RL+) - R10-1 Below 1 Ω
      S22-11 (RL-) - R10-2 Below 1 Ω
      S22-3 (RR+) - Body ground 10 kΩ or higher
      S22-10 (RR-) - Body ground 10 kΩ or higher
      S22-4 (RL+) - Body ground 10 kΩ or higher
      S22-11 (RL-) - Body ground 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  9. INSPECT STEREO COMPONENT SPEAKER ASSEMBLY 
    1. Disconnect the R10 or R11 speaker connector.
      Fig 6: Identifying Connector Terminals
      GTY156299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance of the speaker.

      Standard resistance

      Tester Connection Specified Condition
      1 - 2 Approx. 8 Ω

    NG → REPLACE REAR SPEAKER ASSEMBLY 

    OK → REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY 

  10. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR NO. 2 SPEAKER ASSEMBLY) 
    1. Disconnect the S22 amplifier connector.
      Fig 7: Identifying Connector Terminals
      GTY141607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the W6 speaker connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance

      Tester Connection Specified Condition
      S22-6 (WF-) - W6-1 Below 1 Ω
      S22-5 (WF+) - W6-2 Below 1 Ω
      S22-6 (WF-) - Body ground 10 kΩ or higher
      S22-5 (WF+) - Body ground 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  11. INSPECT REAR NO. 2 SPEAKER ASSEMBLY 
    1. Disconnect the W6 speaker connector.
      Fig 8: Identifying Connector Terminals
      GTY149888Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance of the speaker.

      Standard resistance

      Tester Connection Specified Condition
      1 - 2 Approx. 8 Ω

    NG → REPLACE REAR NO. 2 SPEAKER ASSEMBLY 

    OK → REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY 

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