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Speaker Circuit (TO 12/2010): Procedure

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
  1. CONFIRM MODEL 

    Result

    Condition Proceed to
    for 12 Speakers A
    for 9 Speakers B

    B → See step   12 

    A: Go to next step 

  2. 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. 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
      E36-10 (FR+) - D43-3 (TWR+) Always Below 1 Ω
      E36-9 (FR-) - D43-2 (TWR-) Always Below 1 Ω
      E36-3 (FL+) - D1-3 (TWL+) Always Below 1 Ω
      E36-8 (FL-) - D1-2 (TWL-) Always Below 1 Ω
    3. Measure the resistance between each of the front No. 2 speakers and the front No. 1 speakers to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D43-4 (+) - G3-1 Always Below 1 Ω
      D43-1 (-) - G3-2 Always Below 1 Ω
      D1-4 (+) - H3-1 Always Below 1 Ω
      D1-1 (-) - H3-2 Always Below 1 Ω
    4. 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
      E36-2 (RR+) - I6-3 (+TW) Always Below 1 Ω
      E36-7 (RR-) - I6-2 (-TW) Always Below 1 Ω
      E36-4 (RL+) - J6-3 (+TW) Always Below 1 Ω
      E36-11 (RL-) - J6-2 (-TW) Always Below 1 Ω
    5. 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
      I6-4 (+) - I3-1 Always Below 1 Ω
      I6-1 (-) - I3-2 Always Below 1 Ω
      J6-4 (+) - J3-1 Always Below 1 Ω
      J6-1 (-) - J3-2 Always Below 1 Ω
    6. Measure the resistance between each of the roof speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E37-2 (SR+) - L13-1 Always Below 1 Ω
      E37-6 (SR-) - L13-2 Always Below 1 Ω
      E37-8 (SL+) - L15-1 Always Below 1 Ω
      E37-7 (SL-) - L15-2 Always Below 1 Ω
    7. Measure the resistance between the rear 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
      E37-3 (WF1+) - L24-4 (WF+) Always Below 1 Ω
      E37-9 (WF1-) - L24-3 (WF-) Always Below 1 Ω
      E38-5 (WFR+) - L24-2 (WF+) Always Below 1 Ω
      E38-4 (WFR-) - L24-1 (WF-) Always Below 1 Ω
    8. Measure the resistance between the front No. 3 speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E36-5 (CTR+) - F3-1 Always Below 1 Ω
      E36-12 (CTR-) - F3-2 Always Below 1 Ω
    9. 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
      E36-10 (FR+) - Body ground Always 10 kΩ or higher
      E36-9 (FR-) - Body ground Always 10 kΩ or higher
      E36-3 (FL+) - Body ground Always 10 kΩ or higher
      E36-8 (FL-) - Body ground Always 10 kΩ or higher
      E36-2 (RR+) - Body ground Always 10 kΩ or higher
      E36-7 (RR-) - Body ground Always 10 kΩ or higher
      E36-4 (RL+) - Body ground Always 10 kΩ or higher
      E36-11 (RL-) - Body ground Always 10 kΩ or higher
      E37-2 (SR+) - Body ground Always 10 kΩ or higher
      E37-6 (SR-) - Body ground Always 10 kΩ or higher
      E37-8 (SL+) - Body ground Always 10 kΩ or higher
      E37-7 (SL-) - Body ground Always 10 kΩ or higher
      E37-3 (WF1+) - Body ground Always 10 kΩ or higher
      E37-9 (WF1-) - Body ground Always 10 kΩ or higher
      E38-5 (WFR+) - Body ground Always 10 kΩ or higher
      E38-4 (WFR-) - Body ground Always 10 kΩ or higher
      E36-5 (CTR+) - Body ground Always 10 kΩ or higher
      E36-12 (CTR-) - Body ground Always 10 kΩ or higher
    10. Measure the resistance between each of the front No. 1 speakers and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G3-1 - Body ground Always 10 kΩ or higher
      G3-2 - Body ground Always 10 kΩ or higher
      H3-1 - Body ground Always 10 kΩ or higher
      H3-2 - Body ground Always 10 kΩ or higher
    11. 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
      I3-1 - Body ground Always 10 kΩ or higher
      I3-2 - Body ground Always 10 kΩ or higher
      J3-1 - Body ground Always 10 kΩ or higher
      J3-2 - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. INSPECT FRONT NO. 1 SPEAKER 
    1. Resistance check
      Fig 1: Identifying Front No. 1 Speaker Connector Terminals
      GTY304309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G3-1 - G3-2 Always 1.8 to 2.6 Ω
        H3-1 - H3-2 Always 1.8 to 2.6 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Front No. 1 Speaker)

    NG → See step   20 

    OK: Go to next step 

  4. INSPECT FRONT NO. 2 SPEAKER 
    1. Resistance check
      Fig 2: Identifying Front No. 2 Speaker Connector Terminals
      GTY306568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        D43-4 (+) - D43-3 (TWR+) Always Below 1 Ω
        D43-1 (-) - D43-2 (TWR-) Always Below 1 Ω
        D43-3 (TWR+) - D43-2 (TWR-) Always 10 kΩ or higher
        D1-4 (+) - D1-3 (TWL+) Always Below 1 Ω
        D1-1 (-) - D1-2 (TWL-) Always Below 1 Ω
        D1-3 (TWL+) - D1-2 (TWL-) Always 10 kΩ or higher
        TEXT IN ILLUSTRATION

        *A for RH
        *B for LH
        *a Component without harness connected
        (Front No. 2 Speaker)

    NG → See step   25 

    OK: Go to next step 

  5. REPLACE FRONT NO. 2 SPEAKER 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL .

      OK

      Malfunction disappears.

      HINT: 

      • 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 → See step   6 

    OK → END (FRONT NO. 2 SPEAKER WAS DEFECTIVE) 

  6. INSPECT REAR SPEAKER 
    1. Resistance check
      Fig 3: Identifying Rear Speaker Connector Terminals
      GTY303894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        I3-1 - I3-2 Always 1.8 to 2.6 Ω
        J3-1 - J3-2 Always 1.8 to 2.6 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Rear Speaker)

    NG → See step   21 

    OK: Go to next step 

  7. INSPECT REAR NO. 2 SPEAKER 
    1. Resistance check
      Fig 4: Identifying Rear No. 2 Speaker Connector Terminals
      GTY306604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        I6-4 (+) - I6-3 (+TW) Always Below 1 Ω
        I6-1 (-) - I6-2 (-TW) Always Below 1 Ω
        I6-3 (+TW) - I6-2 (-TW) Always 10 kΩ or higher
        J6-4 (+) - J6-3 (+TW) Always Below 1 Ω
        J6-1 (-) - J6-2 (-TW) Always Below 1 Ω
        J6-3 (+TW) - J6-2 (-TW) Always 10 kΩ or higher
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Rear No. 2 Speaker)

    NG → See step   26 

    OK: Go to next step 

  8. REPLACE REAR NO. 2 SPEAKER 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL .

      OK

      Malfunction disappears.

      HINT: 

      • Connect all the connectors to the rear 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 → See step   9 

    OK → END (REAR NO. 2 SPEAKER WAS DEFECTIVE) 

  9. INSPECT ROOF SPEAKER 
    1. Resistance check
      Fig 5: Identifying Roof Speaker Connector Terminals
      GTY299848Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        L13-1 - L13-2 Always 1.5 to 2.1 Ω
        L15-1 - L15-2 Always 1.5 to 2.1 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Roof Speaker)

    NG → See step   27 

    OK: Go to next step 

  10. INSPECT REAR STEREO COMPONENT SPEAKER 
    1. Resistance check
      Fig 6: Identifying Rear Stereo Component Speaker Connector Terminals
      GTY304656Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        L24-1 (WF-) - L24-2 (WF+) Always 1.6 to 2.4 Ω
        L24-3 (WF-) - L24-4 (WF+) Always 1.6 to 2.4 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Rear Stereo Component Speaker)

    NG → See step   23 

    OK: Go to next step 

  11. INSPECT FRONT NO. 3 SPEAKER 
    1. Resistance check
      Fig 7: Identifying Front No. 3 Speaker Connector Terminals
      GTY297838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        F3-1 (+) - F3-2 (-) Always 1.5 to 2.1 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Front No. 3 Speaker)

    NG → See step   22 

    OK → See step   24 

  12. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the connectors from the radio receiver assembly and speakers.
    2. Measure the resistance between each of the front No. 2 speakers and the radio receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E32-1 (FR+) - D43-3 (TWR+) Always Below 1 Ω
      E32-5 (FR-) - D43-2 (TWR-) Always Below 1 Ω
      E32-2 (FL+) - D1-3 (TWL+) Always Below 1 Ω
      E32-6 (FL-) - D1-2 (TWL-) Always Below 1 Ω
    3. Measure the resistance between each of the front No. 2 speakers and the front No. 1 speakers to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D43-4 (+) - G3-1 Always Below 1 Ω
      D43-1 (-) - G3-2 Always Below 1 Ω
      D1-4 (+) - H3-1 Always Below 1 Ω
      D1-1 (-) - H3-2 Always Below 1 Ω
    4. Measure the resistance between the front No. 3 speaker and the radio receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E32-1 (FR+) - F3-1 (+) Always Below 1 Ω
      E32-5 (FR-) - F3-2 (-) Always Below 1 Ω
      E32-2 (FL+) - F3-3 (+) Always Below 1 Ω
      E32-6 (FL-) - F3-4 (-) Always Below 1 Ω
    5. Measure the resistance between each of the rear No. 2 speakers and the radio receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E33-1 (RR+) - I6-3 (+TW) Always Below 1 Ω
      E33-3 (RR-) - I6-2 (-TW) Always Below 1 Ω
      E33-2 (RL+) - J6-3 (+TW) Always Below 1 Ω
      E33-6 (RL-) - J6-2 (-TW) 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
      I6-4 (+) - I3-1 Always Below 1 Ω
      I6-1 (-) - I3-2 Always Below 1 Ω
      J6-4 (+) - J3-1 Always Below 1 Ω
      J6-1 (-) - J3-2 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
      E32-1 (FR+) - Body ground Always 10 kΩ or higher
      E32-5 (FR-) - Body ground Always 10 kΩ or higher
      E32-2 (FL+) - Body ground Always 10 kΩ or higher
      E32-6 (FL-) - Body ground Always 10 kΩ or higher
      E33-1 (RR+) - Body ground Always 10 kΩ or higher
      E33-3 (RR-) - Body ground Always 10 kΩ or higher
      E33-2 (RL+) - Body ground Always 10 kΩ or higher
      E33-6 (RL-) - Body ground Always 10 kΩ or higher
    8. Measure the resistance between each of the front No. 1 speakers and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G3-1 - Body ground Always 10 kΩ or higher
      G3-2 - Body ground Always 10 kΩ or higher
      H3-1 - Body ground Always 10 kΩ or higher
      H3-2 - Body ground Always 10 kΩ or higher
    9. 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
      I3-1 - Body ground Always 10 kΩ or higher
      I3-2 - Body ground Always 10 kΩ or higher
      J3-1 - Body ground Always 10 kΩ or higher
      J3-2 - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  13. INSPECT FRONT NO. 1 SPEAKER 
    1. Resistance check
      Fig 8: Identifying Front No. 1 Speaker Connector Terminals
      GTY304309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G3-1 - G3-2 Always 3.2 to 4.8 Ω
        H3-1 - H3-2 Always 3.2 to 4.8 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Front No. 1 Speaker)

    NG → See step   20 

    OK: Go to next step 

  14. INSPECT FRONT NO. 2 SPEAKER 
    1. Resistance check
      Fig 9: Identifying Front No. 2 Speaker Connector Terminals
      GTY306568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        D43-4 (+) - D43-3 (TWR+) Always Below 1 Ω
        D43-1 (-) - D43-2 (TWR-) Always Below 1 Ω
        D43-3 (TWR+) - D43-2 (TWR-) Always 10 kΩ or higher
        D1-4 (+) - D1-3 (TWL+) Always Below 1 Ω
        D1-1 (-) - D1-2 (TWL-) Always Below 1 Ω
        D1-3 (TWL+) - D1-2 (TWL-) Always 10 kΩ or higher
        TEXT IN ILLUSTRATION

        *A for RH
        *B for LH
        *a Component without harness connected
        (Front No. 2 Speaker)

    NG → See step   25 

    OK: Go to next step 

  15. REPLACE FRONT NO. 2 SPEAKER 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL .

      OK

      Malfunction disappears.

      HINT: 

      • 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 → See step   16 

    OK → END (FRONT NO. 2 SPEAKER WAS DEFECTIVE) 

  16. INSPECT REAR SPEAKER 
    1. Resistance check
      Fig 10: Identifying Rear Speaker Connector Terminals
      GTY303894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        I3-1 - I3-2 Always 3.2 to 4.8 Ω
        J3-1 - J3-2 Always 3.2 to 4.8 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Rear Speaker)

    NG → See step   21 

    OK: Go to next step 

  17. INSPECT REAR NO. 2 SPEAKER 
    1. Resistance check
      Fig 11: Identifying Rear No. 2 Speaker Connector Terminals
      GTY306604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        I6-4 (+) - I6-3 (+TW) Always Below 1 Ω
        I6-1 (-) - I6-2 (-TW) Always Below 1 Ω
        I6-3 (+TW) - I6-2 (-TW) Always 10 kΩ or higher
        J6-4 (+) - J6-3 (+TW) Always Below 1 Ω
        J6-1 (-) - J6-2 (-TW) Always Below 1 Ω
        J6-3 (+TW) - J6-2 (-TW) Always 10 kΩ or higher
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Rear No. 2 Speaker)

    NG → See step   26 

    OK: Go to next step 

  18. REPLACE REAR NO. 2 SPEAKER 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL .

      OK

      Malfunction disappears.

      HINT: 

      • Connect all the connectors to the rear 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 → See step   19 

    OK → END (REAR NO. 2 SPEAKER WAS DEFECTIVE) 

  19. INSPECT FRONT NO. 3 SPEAKER 
    1. Resistance check
      Fig 12: Identifying Front No. 3 Speaker Connector Terminals
      GTY297912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        F3-1 (+) - F3-2 (-) Always 32 to 48 Ω
        F3-3 (+) - F3-4 (-) Always 32 to 48 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Front No. 3 Speaker)

    NG → See step   22 

    OK → See step   24 

  20. REPLACE FRONT NO. 1 SPEAKER. Refer to  REMOVAL 
  21. REPLACE REAR SPEAKER. Refer to  REMOVAL 
  22. REPLACE FRONT NO. 3 SPEAKER. Refer to  REMOVAL 
  23. REPLACE REAR STEREO COMPONENT SPEAKER. Refer to  REMOVAL 
  24. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  25. REPLACE FRONT NO. 2 SPEAKER. Refer to  REMOVAL 
  26. REPLACE REAR NO. 2 SPEAKER. Refer to  REMOVAL 
  27. REPLACE ROOF SPEAKER. Refer to  REMOVAL 
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