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AUDIO AND VISUAL SYSTEM(except 8 Speakers) 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 the short 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.

A000778E15
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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    CHECK SPEAKER (OPERATION CHECK)


    1. A000997

      Enter the "System Check Mode" screen. Refer to Check SP Check On 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
      Stereo component 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 H99 stereo component amplifier assembly connector.

    2. Disconnect the H63 and H62 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
      H99-13 (FR+) - H63-2 Always Below 1 Ω
      H99-28 (FR-) - H63-1 Always Below 1 Ω
      H99-12 (FL+) - H62-2 Always Below 1 Ω
      H99-27 (FL-) - H62-1 Always Below 1 Ω
      H99-13 (FR+) or H63-2 - Body ground Always 10 kΩ or higher
      H99-28 (FR-) or H63-1 - Body ground Always 10 kΩ or higher
      H99-12 (FL+) or H62-2 - Body ground Always 10 kΩ or higher
      H99-27 (FL-) or H62-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. Click here

    INSPECT 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

    3. Check that the malfunction disappears when a new or known good front No. 2 speaker assembly is installed.

      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 H99 stereo component amplifier assembly connector.

    2. Disconnect the L6 and M5 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
      H99-5 (WFR+) - L6-1 Always Below 1 Ω
      H99-20 (WFR-) - L6-2 Always Below 1 Ω
      H99-4 (WFL+) - M5-1 Always Below 1 Ω
      H99-19 (WFL-) - M5-2 Always Below 1 Ω
      H99-5 (WFR+) or L6-1 - Body ground Always 10 kΩ or higher
      H99-20 (WFR-) or L6-2 - Body ground Always 10 kΩ or higher
      H99-4 (WFL+) or M5-1 - Body ground Always 10 kΩ or higher
      H99-19 (WFL-) or M5-2 - 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 H99 stereo component amplifier assembly connector.

    2. Disconnect the J2 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
      H99-7 (CTR+) - J2-2 Always Below 1 Ω
      H99-22 (CTR-) - J2-1 Always Below 1 Ω
      H99-7 (CTR+) or J2-2 - Body ground Always 10 kΩ or higher
      H99-22 (CTR-) or J2-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    INSPECT 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

    3. Check that the malfunction disappears when a new or known good front No. 3 speaker assembly is installed.

      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 - REAR SPEAKER ASSEMBLY)


    1. Disconnect the H99 stereo component amplifier assembly connector.

    2. Disconnect the N7 and O7 rear No. 2 speaker assembly connectors.

    3. Disconnect the N6 and O6 rear speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H99-15 (RR+) - N7-3 (+TW) Always Below 1 Ω
      H99-30 (RR-) - N7-1 (-TW) Always Below 1 Ω
      H99-14 (RL+) - O7-3 (+TW) Always Below 1 Ω
      H99-29 (RL-) - O7-1 (-TW) Always Below 1 Ω
      N6-1 - N7-4 (+) Always Below 1 Ω
      N6-2 - N7-2 (-) Always Below 1 Ω
      O6-1 - O7-4 (+) Always Below 1 Ω
      O6-2 - O7-2 (-) Always Below 1 Ω
      H99-15 (RR+) or N7-3 (+TW) - Body ground Always 10 kΩ or higher
      H99-30 (RR-) or N7-1 (-TW) - Body ground Always 10 kΩ or higher
      H99-14 (RL+) or O7-3 (+TW) - Body ground Always 10 kΩ or higher
      H99-29 (RL-) or O7-1 (-TW) - Body ground Always 10 kΩ or higher
      N6-1 or N7-4 (+) - Body ground Always 10 kΩ or higher
      N6-2 or N7-2 (-) - Body ground Always 10 kΩ or higher
      O6-1 or O7-4 (+) - Body ground Always 10 kΩ or higher
      O6-2 or O7-2 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. 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

  10. Click here

    INSPECT 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

    3. Check that the malfunction disappears when a new or known good rear No. 2 speaker assembly is installed.

      Click here

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    • OK

      END

    • NG

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

  11. Click here

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


    1. Disconnect the H99 stereo component amplifier assembly connector.

    2. Disconnect the Q15 and P32 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
      H99-11 (SR+) - Q15-2 Always Below 1 Ω
      H99-26 (SR-) - Q15-1 Always Below 1 Ω
      H99-10 (SL+) - P32-2 Always Below 1 Ω
      H99-25 (SL-) - P32-1 Always Below 1 Ω
      H99-11 (SR+) or Q15-2 - Body ground Always 10 kΩ or higher
      H99-26 (SR-) or Q15-1 - Body ground Always 10 kΩ or higher
      H99-10 (SL+) or P32-2 - Body ground Always 10 kΩ or higher
      H99-25 (SL-) or P32-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. Click here

    INSPECT REAR HEADER SPEAKER ASSEMBLY


    1. Remove the rear header speaker assembly.

      Click here

    2. Inspect the rear header speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPLACE REAR HEADER SPEAKER ASSEMBLYClick here

  13. Click here

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


    1. Disconnect the H99 stereo component amplifier assembly connector.

    2. Disconnect the Q16 stereo component speaker assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H99-6 (WF1+) - Q16-1 Always Below 1 Ω
      H99-21 (WF1-) - Q16-2 Always Below 1 Ω
      H99-6 (WF1+) or Q16-1 - Body ground Always 10 kΩ or higher
      H99-21 (WF1-) or Q16-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. Click here

    INSPECT STEREO COMPONENT SPEAKER ASSEMBLY


    1. Remove the stereo component speaker assembly.

      Click here

    2. Inspect the stereo component speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPLACE STEREO COMPONENT SPEAKER ASSEMBLYClick here