AUDIO AND VISUAL SYSTEM (w/ Navigation System) Speaker Circuit

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.

WIRING DIAGRAM

A0160FYE01
A016275E04

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the connectors from the stereo component amplifier assembly and speakers.

    2. Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      P45-10 (WFR+) - L1-1 Always Below 1 Ω
      P45-9 (WFR-) - L1-2 Always Below 1 Ω
      P45-3 (WFL+) - M13-1 Always Below 1 Ω
      P45-8 (WFL-) - M13-2 Always Below 1 Ω

    3. Measure the resistance between each of the front No. 3 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      P28-4 (FR+) - L2-1 (TWR+) Always Below 1 Ω
      P28-10 (FR-) - L2-3 (TWR-) Always Below 1 Ω
      P28-3 (FL+) - M4-1 (TWL+) Always Below 1 Ω
      P28-9 (FL-) - M4-3 (TWL-) Always Below 1 Ω

    4. Measure the resistance between each of the front No. 2 speakers and the front No. 3 speakers to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      L2-2 (+) - L5-1 Always Below 1 Ω
      L2-4 (-) - L5-2 Always Below 1 Ω
      M4-2 (+) - M12-1 Always Below 1 Ω
      M4-4 (-) - M12-2 Always Below 1 Ω

    5. Measure the resistance between each of the rear No. 2 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      P45-5 (RR+) - N5-1 (+) Always Below 1 Ω
      P45-12 (RR-) - N5-3 (-) Always Below 1 Ω
      P45-4 (RL+) - O5-1 (+) Always Below 1 Ω
      P45-11 (RL-) - O5-3 (-) Always Below 1 Ω

    6. Measure the resistance between each of the rear speakers and the rear No. 2 speakers to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      N5-2 (+TW) - N2-1 Always Below 1 Ω
      N5-4 (-TW) - N2-2 Always Below 1 Ω
      O5-2 (+TW) - O2-1 Always Below 1 Ω
      O5-4 (-TW) - O2-2 Always Below 1 Ω

    7. Measure the resistance between the stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      P28-1 (WF1+) - P21-3 (WF1+) Always Below 1 Ω
      P28-5 (WF1-) - P21-4 (WF1-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P45-2 (SR+) - Q26-1 Always Below 1 Ω
      P45-7 (SR-) - Q26-2 Always Below 1 Ω
      P45-1 (SL+) - Q22-1 Always Below 1 Ω
      P45-6 (SL-) - Q22-2 Always Below 1 Ω

    9. Measure the resistance between the front stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      P28-8 (CTR+) - K3-1 Always Below 1 Ω
      P28-7 (CTR-) - K3-2 Always Below 1 Ω

    10. 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
      P45-10 (WFR+) - Body ground Always 10 kΩ or higher
      P45-9 (WFR-) - Body ground Always 10 kΩ or higher
      P45-3 (WFL+) - Body ground Always 10 kΩ or higher
      P45-8 (WFL-) - Body ground Always 10 kΩ or higher
      P45-2 (SR+) - Body ground Always 10 kΩ or higher
      P45-7 (SR-) - Body ground Always 10 kΩ or higher
      P45-1 (SL+) - Body ground Always 10 kΩ or higher
      P45-6 (SL-) - Body ground Always 10 kΩ or higher
      P45-5 (RR+) - Body ground Always 10 kΩ or higher
      P45-12 (RR-) - Body ground Always 10 kΩ or higher
      P45-4 (RL+) - Body ground Always 10 kΩ or higher
      P45-11 (RL-) - Body ground Always 10 kΩ or higher
      P28-4 (FR+) - Body ground Always 10 kΩ or higher
      P28-10 (FR-) - Body ground Always 10 kΩ or higher
      P28-3 (FL+) - Body ground Always 10 kΩ or higher
      P28-9 (FL-) - Body ground Always 10 kΩ or higher
      P28-1 (WF1+) - Body ground Always 10 kΩ or higher
      P28-5 (WF1-) - Body ground Always 10 kΩ or higher
      P28-8 (CTR+) - Body ground Always 10 kΩ or higher
      P28-7 (CTR-) - Body ground Always 10 kΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L5-1 - Body ground Always 10 kΩ or higher
      L5-2 - Body ground Always 10 kΩ or higher
      M12-1 - Body ground Always 10 kΩ or higher
      M12-2 - Body ground Always 10 kΩ or higher

    12. Measure the resistance between each of the rear speakers and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      N2-1 - Body ground Always 10 kΩ or higher
      N2-2 - Body ground Always 10 kΩ or higher
      O2-1 - Body ground Always 10 kΩ or higher
      O2-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 1 SPEAKER


    1. A0161OXE49
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 1 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L1-1 - L1-2 Always 4.8 to 7.2 Ω
        M13-1 - M13-2 Always 4.8 to 7.2 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER Click here

    OK

  3. INSPECT FRONT NO. 2 SPEAKER


    1. A0161JPE11
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 2 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L5-1 - L5-2 Always 10 kΩ or higher
        M12-1 - M12-2 Always 10 kΩ or higher

    NG

    REPLACE FRONT NO. 2 SPEAKER Click here

    OK

  4. REPLACE FRONT NO. 2 SPEAKER


    1. Check that the malfunction disappears when a known good speaker is installed Click here.

      OK
      Malfunction disappears.

      Tech Tips


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

      • When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.

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


    NG

    INSPECT FRONT NO. 3 SPEAKER Click here

    OK

    END (FRONT NO. 2 SPEAKER WAS DEFECTIVE)

  5. INSPECT FRONT NO. 3 SPEAKER


    1. A01610CE19
      Text in Illustration
      *A for RH
      *B for LH
      *1

      Component without harness connected

      (Front No. 3 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L2-1 (TWR+) - L2-3 (TWR-) Always 4.8 to 6.4 Ω
        L2-1 (TWR+) - L2-2 (+) Always Below 1 Ω
        L2-3 (TWR-) - L2-4 (-) Always Below 1 Ω
        M4-1 (TWL+) - M4-3 (TWL-) Always 4.8 to 6.4 Ω
        M4-1 (TWL+) - M4-2 (+) Always Below 1 Ω
        M4-3 (TWL-) - M4-4 (-) Always Below 1 Ω

    NG

    REPLACE FRONT NO. 3 SPEAKER Click here

    OK

  6. INSPECT FRONT STEREO COMPONENT SPEAKER


    1. A0162B1E14
      Text in Illustration
      *1

      Component without harness connected

      (Front Stereo Component Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        K3-1 - K3-2 Always 4.8 to 6.4 Ω

    NG

    REPLACE FRONT STEREO COMPONENT SPEAKER Click here

    OK

  7. INSPECT REAR SPEAKER


    1. A0161OXE56
      Text in Illustration
      *1

      Component without harness connected

      (Rear Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        N2-1 - N2-2 Always 5.0 to 7.0 Ω
        O2-1 - O2-2 Always 5.0 to 7.0 Ω

    NG

    REPLACE REAR SPEAKER Click here

    OK

  8. INSPECT REAR NO. 2 SPEAKER


    1. A01610CE25
      Text in Illustration
      *1

      Component without harness connected

      (Rear No. 2 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        N5-1 (+) - N5-3 (-) Always 10 kΩ or higher
        N5-1 (+) - N5-2 (+TW) Always Below 1 Ω
        N5-3 (-) - N5-4 (-TW) Always Below 1 Ω
        O5-1 (+) - O5-3 (-) Always 10 kΩ or higher
        O5-1 (+) - O5-2 (+TW) Always Below 1 Ω
        O5-3 (-) - O5-4 (-TW) Always Below 1 Ω

    NG

    REPLACE REAR NO. 2 SPEAKER Click here

    OK

  9. REPLACE REAR NO. 2 SPEAKER


    1. Check that the malfunction disappears when a known good speaker is installed Click here.

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the rear No. 2 speakers that were disconnected.

      • When there is a possibility that either the right or left rear speaker is defective, inspect by interchanging the right one with the left one.

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


    NG

    INSPECT STEREO COMPONENT SPEAKER Click here

    OK

    END (REAR NO. 2 SPEAKER WAS DEFECTIVE)

  10. INSPECT STEREO COMPONENT SPEAKER


    1. A01610CE28
      Text in Illustration
      *1

      Component without harness connected

      (Stereo Component Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P21-3 (WF1+) - P21-4 (WF1-) Always 6.2 to 7.8 Ω

    NG

    REPLACE STEREO COMPONENT SPEAKER Click here

    OK

  11. INSPECT REAR STEREO COMPONENT SPEAKER


    1. A0162B1E04
      Text in Illustration
      *1

      Component without harness connected

      (Rear Stereo Component Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Q26-1 - Q26-2 Always 4.8 to 6.4 Ω
        Q22-1 - Q22-2 Always 4.8 to 6.4 Ω

    NG

    REPLACE REAR STEREO COMPONENT SPEAKER Click here

    OK

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