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 or speakers.

WIRING DIAGRAM


  1. for 8 Speakers

    A0021O7E03
    A0020QRE08

  2. for 6 Speakers

    A0021LPE03

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 8 Speakers A
      for 6 Speakers B

    B

    CHECK SPEAKER (OPERATION CHECK) Click here

    A

  2. CHECK SPEAKER (OPERATION CHECK)


    1. A0021U5

      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

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


    1. Disconnect the P23 stereo component amplifier assembly connector.

    2. Disconnect the K55 and K56 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
      P23-13 (FR+) - K55-2 (+) Always Below 1 Ω
      P23-28 (FR-) - K55-1 (-) Always Below 1 Ω
      P23-12 (FL+) - K56-2 (+) Always Below 1 Ω
      P23-27 (FL-) - K56-1 (-) 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
      P23-13 (FR+) - Body ground Always 10 kΩ or higher
      P23-28 (FR-) - Body ground Always 10 kΩ or higher
      P23-12 (FL+) - Body ground Always 10 kΩ or higher
      P23-27 (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. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. A0022YVC28
      *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

    OK

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

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

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


    1. Disconnect the P23 stereo component amplifier assembly connector.

    2. Disconnect the N14 and N29 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
      P23-5 (WFR+) - N14-1 Always Below 1 Ω
      P23-20 (WFR-) - N14-2 Always Below 1 Ω
      P23-4 (WFL+) - N29-1 Always Below 1 Ω
      P23-19 (WFL-) - N29-2 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
      P23-5 (WFR+) - Body ground Always 10 kΩ or higher
      P23-20 (WFR-) - Body ground Always 10 kΩ or higher
      P23-4 (WFL+) - Body ground Always 10 kΩ or higher
      P23-19 (WFL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. A0020RSC01
      *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

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


    1. Disconnect the P23 stereo component amplifier assembly connector.

    2. Disconnect the O4 and O9 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
      P23-15 (RR+) - O4-1 Always Below 1 Ω
      P23-30 (RR-) - O4-2 Always Below 1 Ω
      P23-14 (RL+) - O9-1 Always Below 1 Ω
      P23-29 (RL-) - O9-2 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
      P23-15 (RR+) - Body ground Always 10 kΩ or higher
      P23-30 (RR-) - Body ground Always 10 kΩ or higher
      P23-14 (RL+) - Body ground Always 10 kΩ or higher
      P23-29 (RL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. A0020RSC01
      *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

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


    1. Disconnect the P23 stereo component amplifier assembly connector.

    2. Disconnect the P27 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
      P23-6 (WF1+) - P27-1 Always Below 1 Ω
      P23-21 (WF1-) - P27-2 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
      P23-6 (WF1+) - Body ground Always 10 kΩ or higher
      P23-21 (WF1-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly.

      Click here

    2. A0020RSC01
      *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

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


    1. Disconnect the P23 stereo component amplifier assembly connector.

    2. Disconnect the K57 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
      P23-7 (CTR+) - K57-2 (+) Always Below 1 Ω
      P23-22 (CTR-) - K57-1 (-) 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
      P23-7 (CTR+) - Body ground Always 10 kΩ or higher
      P23-22 (CTR-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly.

      Click here

    2. A0022YVC28
      *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

  13. CHECK SPEAKER (OPERATION CHECK)


    1. A0021U5

      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 or front No. 2 speaker assembly A
      Rear speaker assembly B

      Tech Tips

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


    B

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

    A

  14. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - RADIO SETTING CONDENSER - FRONT NO. 1 SPEAKER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the K70 radio receiver assembly connector.

    2. Disconnect the K55 and K56 front No. 2 speaker assembly connectors.

    3. Disconnect the N14 and N29 front No. 1 speaker assembly connectors.

    4. Disconnect the K69 radio setting condenser connector.

    5. 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
      K70-1 (FR+) - N14-1 Always Below 1 Ω
      K70-5 (FR-) - N14-2 Always Below 1 Ω
      K70-2 (FL+) - N29-1 Always Below 1 Ω
      K70-6 (FL-) - N29-2 Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K70-1 (FR+) - K69-3 (RIN) Always Below 1 Ω
      K70-5 (FR-) - K69-6 (ROUT) Always Below 1 Ω
      K70-2 (FL+) - K69-1 (LIN) Always Below 1 Ω
      K70-6 (FL-) - K69-2 (LOUT) Always Below 1 Ω

    7. Measure the resistance between each of the front No. 2 speaker assemblies and the radio setting condenser to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K55-2 - K69-8 (RI+) Always Below 1 Ω
      K55-1 - K69-7 (RI-) Always Below 1 Ω
      K56-2 - K69-4 (LI+) Always Below 1 Ω
      K56-1 - K69-5 (LI-) Always Below 1 Ω

    8. 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
      K70-1 (FR+) - Body ground Always 10 kΩ or higher
      K70-5 (FR-) - Body ground Always 10 kΩ or higher
      K70-2 (FL+) - Body ground Always 10 kΩ or higher
      K70-6 (FL-) - Body ground Always 10 kΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K55-2 - Body ground Always 10 kΩ or higher
      K55-1 - Body ground Always 10 kΩ or higher
      K56-2 - Body ground Always 10 kΩ or higher
      K56-1 - 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. A0020RSC01
      *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

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  16. INSPECT RADIO SETTING CONDENSER


    1. Remove the radio setting condenser.

    2. A00219MC01
      *a

      Component without harness connected

      (Radio Setting Condenser)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (RIN) - 8 (RI+) Always 10 kΩ or higher
      6 (ROUT) - 7 (RI-) Always Below 1 Ω
      1 (LIN) - 4 (LI+) Always 10 kΩ or higher
      2 (LOUT) - 5 (LI-) Always Below 1 Ω
      3 (RIN) - 6 (ROUT) Always 10 kΩ or higher
      1 (LIN) - 2 (LOUT) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO SETTING CONDENSER

    OK

  17. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. A0022YVC19
      *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

    OK

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

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

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


    1. Disconnect the K71 radio receiver assembly connector.

    2. Disconnect the O4 and O9 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
      K71-1 (RR+) - O4-1 Always Below 1 Ω
      K71-3 (RR-) - O4-2 Always Below 1 Ω
      K71-2 (RL+) - O9-1 Always Below 1 Ω
      K71-6 (RL-) - O9-2 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
      K71-1 (RR+) - Body ground Always 10 kΩ or higher
      K71-3 (RR-) - Body ground Always 10 kΩ or higher
      K71-2 (RL+) - Body ground Always 10 kΩ or higher
      K71-6 (RL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  19. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. A0020RSC01
      *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