AUDIO AND VISUAL SYSTEM(w/o Parking Assist Monitor System) Speaker Circuit

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*1 or speakers.

*1: for 10 Speakers

WIRING DIAGRAM


  1. for 6 Speakers

    A01WYABE03

  2. for 10 Speakers

    A01WYT2E07
    B004FQIE13

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 6 Speakers A
      for 10 Speakers B

    B

    CHECK SPEAKER (OPERATION CHECK) Click here

    A

  2. CHECK SPEAKER (OPERATION CHECK)


    1. A01WYO9

      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. 1 speaker assembly A
      Front No. 2 speaker assembly B
      Rear speaker assembly C

      Tech Tips

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


    B

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - RADIO SETTING CONDENSER - FRONT NO. 2 SPEAKER ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    1. Disconnect the O68 radio receiver assembly connector.

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

    3. Measure the resistance between each of the front No. 1 speaker assemblies and the radio receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O68-1 (FR+) - R14-1 Always Below 1 Ω
      O68-5 (FR-) - R14-2 Always Below 1 Ω
      O68-2 (FL+) - S14-1 Always Below 1 Ω
      O68-6 (FL-) - S14-2 Always Below 1 Ω

    4. Measure the resistance between the radio receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O68-1 (FR+) - Body ground Always 10 kΩ or higher
      O68-5 (FR-) - Body ground Always 10 kΩ or higher
      O68-2 (FL+) - Body ground Always 10 kΩ or higher
      O68-6 (FL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - RADIO SETTING CONDENSER - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the O68 radio receiver assembly connector.

    2. Disconnect the O67 radio setting condenser connector.

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

    4. Measure the resistance between the radio receiver assembly and the radio setting condenser to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O68-1 (FR+) - O67-3 (RIN) Always Below 1 Ω
      O68-5 (FR-) - O67-6 (ROUT) Always Below 1 Ω
      O68-2 (FL+) - O67-1 (LIN) Always Below 1 Ω
      O68-6 (FL-) - O67-2 (LOUT) Always Below 1 Ω

    5. Measure the resistance between the front No. 2 speaker assembly RH and the radio setting condenser to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O67-8 (RI+) - O54-2 Always Below 1 Ω
      O67-7 (RI-) - O54-1 Always Below 1 Ω

    6. Measure the resistance between the front No. 2 speaker assembly LH and the radio setting condenser to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O67-4 (LI+) - O55-2 Always Below 1 Ω
      O67-5 (LI-) - O55-1 Always Below 1 Ω

    7. Measure the resistance between the radio receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O68-1 (FR+) - Body ground Always 10 kΩ or higher
      O68-5 (FR-) - Body ground Always 10 kΩ or higher
      O68-2 (FL+) - Body ground Always 10 kΩ or higher
      O68-6 (FL-) - Body ground Always 10 kΩ or higher

    8. Measure the resistance between the front No. 2 speaker assembly RH and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O54-1 - Body ground Always 10 kΩ or higher
      O54-2 - Body ground Always 10 kΩ or higher

    9. Measure the resistance between the front No. 2 speaker assembly LH and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O55-1 - Body ground Always 10 kΩ or higher
      O55-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. A01WY8FC22
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  7. REPLACE RADIO SETTING CONDENSER


    1. Check that the malfunction disappears when a new or known good radio setting condenser is installed.

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  8. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)


    1. Disconnect the O69 radio receiver assembly connector.

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

    3. Measure the resistance between each of the rear speaker assemblies and the radio receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O69-1 (RR+) - T25-1 Always Below 1 Ω
      O69-3 (RR-) - T25-2 Always Below 1 Ω
      O69-2 (RL+) - U35-1 Always Below 1 Ω
      O69-6 (RL-) - U35-2 Always Below 1 Ω

    4. Measure the resistance between the radio receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O69-1 (RR+) - Body ground Always 10 kΩ or higher
      O69-3 (RR-) - Body ground Always 10 kΩ or higher
      O69-2 (RL+) - Body ground Always 10 kΩ or higher
      O69-6 (RL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  10. CHECK SPEAKER (OPERATION CHECK)


    1. A01WYO9

      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
      Rear speaker assembly C
      Rear No. 3 speaker assembly D
      Front No. 3 speaker assembly E

      Tech Tips

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


    B

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

    C

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

    D

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

    E

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

    A

  11. 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 between each of the front No. 2 speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      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

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. A01WY8FC28
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (-) - 2 (+) Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  13. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a new or known good speaker is installed.

      Click here

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.

      • When there is a possibility that either the right or left front No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on the LH and RH sides.

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  14. 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 between each of the front No. 1 speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      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

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

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


    1. Disconnect the T20 stereo component amplifier assembly connector.

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

    3. Measure the resistance between each of the rear speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-15 (RR+) - T25-1 Always Below 1 Ω
      T20-30 (RR-) - T25-2 Always Below 1 Ω
      T20-14 (RL+) - U35-1 Always Below 1 Ω
      T20-29 (RL-) - U35-2 Always Below 1 Ω

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-15 (RR+) - Body ground Always 10 kΩ or higher
      T20-30 (RR-) - Body ground Always 10 kΩ or higher
      T20-14 (RL+) - Body ground Always 10 kΩ or higher
      T20-29 (RL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  18. 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 between the rear No. 3 speaker assembly and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      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

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  19. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Rear No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 2.0 to 3.0 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY Click here

  20. 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 between the front No. 3 speaker assembly and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      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

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  21. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly.

      Click here

    2. A01WY8FC28
      *a

      Component without harness connected

      (Front No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (-) - 2 (+) Always 4.0 to 6.0 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here