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AUDIO AND VISUAL SYSTEM(for 10.3 Inch Display) Speaker Circuit

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DTC Code DTC Name
  Speaker Circuit
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DESCRIPTION

If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly or speakers.

B0066NQE01
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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    CHECK SPEAKER (OPERATION CHECK)


    1. B0065T2

      Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check.

      Click here

    2. Perform the operation check above and determine the speaker that is not operating.

      Result
      Not Operating Speaker Proceed to
      Front No. 2 speaker assembly A
      Front No. 1 speaker assembly B
      Front No. 3 speaker assembly C
      Rear speaker assembly or rear No. 2 speaker assembly D
      Rear header speaker assembly E
      Rear No. 3 speaker assembly F
      Tip:

      If sound cannot be heard from any speaker, inspect all of them.


  2. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the O54 and O55 front No. 2 speaker assembly connectors.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-13 (FR+) - O54-2 (+) Always Below 1 Ω
      T20-28 (FR-) - O54-1 (-) Always Below 1 Ω
      T20-12 (FL+) - O55-2 (+) Always Below 1 Ω
      T20-27 (FL-) - O55-1 (-) Always Below 1 Ω
      T20-13 (FR+) or O54-2 (+) - Body ground Always 10 kΩ or higher
      T20-28 (FR-) or O54-1 (-) - Body ground Always 10 kΩ or higher
      T20-12 (FL+) or O55-2 (+) - Body ground Always 10 kΩ or higher
      T20-27 (FL-) or O55-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. Click here

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. Inspect the front No. 2 speaker assembly.

      Click here

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    • OK

      END

    • NG

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

  4. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the R14 and S14 front No. 1 speaker assembly connectors.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-5 (WFR+) - R14-1 Always Below 1 Ω
      T20-20 (WFR-) - R14-2 Always Below 1 Ω
      T20-4 (WFL+) - S14-1 Always Below 1 Ω
      T20-19 (WFL-) - S14-2 Always Below 1 Ω
      T20-5 (WFR+) or R14-1 - Body ground Always 10 kΩ or higher
      T20-20 (WFR-) or R14-2 - Body ground Always 10 kΩ or higher
      T20-4 (WFL+) or S14-1 - Body ground Always 10 kΩ or higher
      T20-19 (WFL-) or S14-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. Inspect the front No. 1 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPLACE FRONT NO. 1 SPEAKER ASSEMBLYClick here

  6. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the O56 front No. 3 speaker assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-7 (CTR+) - O56-2 (+) Always Below 1 Ω
      T20-22 (CTR-) - O56-1 (-) Always Below 1 Ω
      T20-7 (CTR+) or O56-2 (+) - Body ground Always 10 kΩ or higher
      T20-22 (CTR-) or O56-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly.

      Click here

    2. Inspect the front No. 3 speaker assembly.

      Click here

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    • OK

      END

    • NG

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

  8. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the T26 and U36 rear No. 2 speaker assembly connectors.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-9 (RR+) - T26-3 (+TW) Always Below 1 Ω
      T20-24 (RR-) - T26-1 (-TW) Always Below 1 Ω
      T20-8 (RL+) - U36-3 (+TW) Always Below 1 Ω
      T20-23 (RL-) - U36-1 (-TW) Always Below 1 Ω
      T20-9 (RR+) or T26-3 (+TW) - Body ground Always 10 kΩ or higher
      T20-24 (RR-) or T26-1 (-TW) - Body ground Always 10 kΩ or higher
      T20-8 (RL+) or U36-3 (+TW) - Body ground Always 10 kΩ or higher
      T20-23 (RL-) or U36-1 (-TW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. Click here

    CHECK HARNESS AND CONNECTOR (REAR SPEAKER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the T25 and U35 rear speaker assembly connectors.

    2. Disconnect the T26 and U36 rear No. 2 speaker assembly connectors.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T25-1 - T26-4 (+) Always Below 1 Ω
      T25-2 - T26-2 (-) Always Below 1 Ω
      U35-1 - U36-4 (+) Always Below 1 Ω
      U35-2 - U36-2 (-) Always Below 1 Ω
      T25-1 or T26-4 (+) - Body ground Always 10 kΩ or higher
      T25-2 or T26-2 (-) - Body ground Always 10 kΩ or higher
      U35-1 or U36-4 (+) - Body ground Always 10 kΩ or higher
      U35-2 or U36-2 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. Click here

    INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. Inspect the rear speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

  11. Click here

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY


    1. Remove the rear No. 2 speaker assembly.

      Click here

    2. Inspect the rear No. 2 speaker assembly.

      Click here

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    • OK

      END

    • NG

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

  12. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR HEADER SPEAKER ASSEMBLY)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the T23 and U34 rear header speaker assembly connectors.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-11 (SR+) - T23-2 Always Below 1 Ω
      T20-26 (SR-) - T23-1 Always Below 1 Ω
      T20-10 (SL+) - U34-2 Always Below 1 Ω
      T20-25 (SL-) - U34-1 Always Below 1 Ω
      T20-11 (SR+) or T23-2 - Body ground Always 10 kΩ or higher
      T20-26 (SR-) or T23-1 - Body ground Always 10 kΩ or higher
      T20-10 (SL+) or U34-2 - Body ground Always 10 kΩ or higher
      T20-25 (SL-) or U34-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. Click here

    REPLACE REAR HEADER SPEAKER ASSEMBLY


    1. Remove the rear header speaker assembly.

      Click here

    2. Inspect the rear header speaker assembly.

      Click here

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    • OK

      END

    • NG

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

  14. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 3 SPEAKER ASSEMBLY)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the T24 rear No. 3 speaker assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-6 (WF1+) - T24-1 Always Below 1 Ω
      T20-21 (WF1-) - T24-2 Always Below 1 Ω
      T20-6 (WF1+) or T24-1 - Body ground Always 10 kΩ or higher
      T20-21 (WF1-) or T24-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  15. Click here

    INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly.

      Click here

    2. Inspect the rear No. 3 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPLACE REAR NO. 3 SPEAKER ASSEMBLYClick here