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Speaker Circuit: Procedure

  1. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Model Proceed to
      for 10 Speakers A
      for 13 Speakers B

    B → See step   3 

    A: Go to next step 

  2. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the connectors from the stereo component amplifier assembly, DCM (telematics transceiver)*1 and speakers.
      • *1: w/ Manual (SOS) Switch
    2. Measure the resistance between the front No. 1 speaker assembly RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-10 (FR+) - J1-1 Always Below 1 Ω
      H57-9 (FR-) - J1-2 Always Below 1 Ω
    3. Measure the resistance between the front No. 1 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-3 (FL+) - K1-1 Always Below 1 Ω
      H57-8 (FL-) - K1-2 Always Below 1 Ω
    4. w/o Manual (SOS) Switch:

      Measure the resistance between the front No. 2 speaker assembly RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-4 (MR+) - I3-2 Always Below 1 Ω
      H58-10 (MR-) - I3-1 Always Below 1 Ω
    5. w/ Manual (SOS) Switch:

      Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-4 (MR+) - H67-2 (SPI+) Always Below 1 Ω
      H58-10 (MR-) - H67-3 (SPI-) Always Below 1 Ω
    6. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 2 speaker assembly RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H67-5 (SPO+) - I3-2 Always Below 1 Ω
      H67-6 (SPO-) - I3-1 Always Below 1 Ω
    7. Measure the resistance between the front No. 2 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-3 (ML+) - I5-2 Always Below 1 Ω
      H58-9 (ML-) - I5-1 Always Below 1 Ω
    8. w/o Manual (SOS) Switch:

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-4 (MR+) - I4-2 Always Below 1 Ω
      H58-10 (MR-) - I4-1 Always Below 1 Ω
    9. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 3 speaker assembly RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H67-5 (SPO+) - I4-2 Always Below 1 Ω
      H67-6 (SPO-) - I4-1 Always Below 1 Ω
    10. Measure the resistance between the front No. 3 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-3 (ML+) - I6-2 Always Below 1 Ω
      H58-9 (ML-) - I6-1 Always Below 1 Ω
    11. Measure the resistance between the front No. 4 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
      H58-8 (CTR+) - I2-2 (+) Always Below 1 Ω
      H58-7 (CTR-) - I2-1 (-) Always Below 1 Ω
    12. Measure the resistance between the rear speaker assembly RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-5 (RR+) - L4-1 Always Below 1 Ω
      H57-12 (RR-) - L4-2 Always Below 1 Ω
    13. Measure the resistance between the rear speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-4 (RL+) - M4-1 Always Below 1 Ω
      H57-11 (RL-) - M4-2 Always Below 1 Ω
    14. Measure the resistance between the No. 1 speaker assembly with box and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-1 (WF1+) - P15-2 (WF1+) Always Below 1 Ω
      H58-2 (WF2+) - P15-4 (WF2+) Always Below 1 Ω
    15. 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
      H57-10 (FR+) - Body ground Always 10 kΩ or higher
      H57-9 (FR-) - Body ground Always 10 kΩ or higher
      H57-3 (FL+) - Body ground Always 10 kΩ or higher
      H57-8 (FL-) - Body ground Always 10 kΩ or higher
      H57-5 (RR+) - Body ground Always 10 kΩ or higher
      H57-12 (RR-) - Body ground Always 10 kΩ or higher
      H57-4 (RL+) - Body ground Always 10 kΩ or higher
      H57-11 (RL-) - Body ground Always 10 kΩ or higher
      H58-4 (MR+) - Body ground Always 10 kΩ or higher
      H58-10 (MR-) - Body ground Always 10 kΩ or higher
      H58-3 (ML+) - Body ground Always 10 kΩ or higher
      H58-9 (ML-) - Body ground Always 10 kΩ or higher
      H58-8 (CTR+) - Body ground Always 10 kΩ or higher
      H58-7 (CTR-) - Body ground Always 10 kΩ or higher
      H58-1 (WF1+) - Body ground Always 10 kΩ or higher
      H58-2 (WF2+) - Body ground Always 10 kΩ or higher
    16. w/ Manual (SOS) Switch:

      Measure the resistance between the DCM (telematics transceiver) and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H67-5 (SPO+) - Body ground Always 10 kΩ or higher
      H67-6 (SPO-) - Body ground Always 10 kΩ or higher
    17. Proceed to the next step based on the inspection result.

      Result

      Condition Proceed to
      NG A
      OK B

    B → See step   4 

    A → REPAIR OR REPLACE HARNESS OR CONNECTOR 

  3. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the connectors from the stereo component amplifier assembly, DCM (telematics transceiver)*1 and speakers.
      • *1: w/ Manual (SOS) Switch
    2. Measure the resistance between the front No. 1 speaker assembly RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-10 (FR+) - J1-1 Always Below 1 Ω
      H57-9 (FR-) - J1-2 Always Below 1 Ω
    3. Measure the resistance between the front No. 1 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-3 (FL+) - K1-1 Always Below 1 Ω
      H57-8 (FL-) - K1-2 Always Below 1 Ω
    4. w/o Manual (SOS) Switch:

      Measure the resistance between the front No. 2 speaker assembly RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-4 (MR+) - I3-2 Always Below 1 Ω
      H58-10 (MR-) - I3-1 Always Below 1 Ω
    5. w/ Manual (SOS) Switch:

      Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-4 (MR+) - H67-2 (SPI+) Always Below 1 Ω
      H58-10 (MR-) - H67-3 (SPI-) Always Below 1 Ω
    6. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 2 speaker assembly RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H67-5 (SPO+) - I3-2 Always Below 1 Ω
      H67-6 (SPO-) - I3-1 Always Below 1 Ω
    7. Measure the resistance between the front No. 2 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-3 (ML+) - I5-2 Always Below 1 Ω
      H58-9 (ML-) - I5-1 Always Below 1 Ω
    8. w/o Manual (SOS) Switch:

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-4 (MR+) - I4-2 Always Below 1 Ω
      H58-10 (MR-) - I4-1 Always Below 1 Ω
    9. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 3 speaker assembly RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H67-5 (SPO+) - I4-2 Always Below 1 Ω
      H67-6 (SPO-) - I4-1 Always Below 1 Ω
    10. Measure the resistance between the front No. 3 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-3 (ML+) - I6-2 Always Below 1 Ω
      H58-9 (ML-) - I6-1 Always Below 1 Ω
    11. Measure the resistance between the front No. 4 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
      H58-8 (CTR+) - I2-2 (+) Always Below 1 Ω
      H58-7 (CTR-) - I2-1 (-) Always Below 1 Ω
    12. Measure the resistance between the rear No. 2 speaker assembly RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-5 (RR+) - Q10-2 (+) Always Below 1 Ω
      H57-12 (RR-) - Q10-1 (-) Always Below 1 Ω
    13. Measure the resistance between the rear No. 2 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-4 (RL+) - P14-2 (+) Always Below 1 Ω
      H57-11 (RL-) - P14-1 (-) Always Below 1 Ω
    14. Measure the resistance between the No. 1 speaker assembly with box and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-1 (WF1+) - P15-2 (WF1+) Always Below 1 Ω
      H58-2 (WF2+) - P15-4 (WF2+) Always Below 1 Ω
    15. 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
      H57-10 (FR+) - Body ground Always 10 kΩ or higher
      H57-9 (FR-) - Body ground Always 10 kΩ or higher
      H57-3 (FL+) - Body ground Always 10 kΩ or higher
      H57-8 (FL-) - Body ground Always 10 kΩ or higher
      H57-5 (RR+) - Body ground Always 10 kΩ or higher
      H57-12 (RR-) - Body ground Always 10 kΩ or higher
      H57-4 (RL+) - Body ground Always 10 kΩ or higher
      H57-11 (RL-) - Body ground Always 10 kΩ or higher
      H58-4 (MR+) - Body ground Always 10 kΩ or higher
      H58-10 (MR-) - Body ground Always 10 kΩ or higher
      H58-3 (ML+) - Body ground Always 10 kΩ or higher
      H58-9 (ML-) - Body ground Always 10 kΩ or higher
      H58-8 (CTR+) - Body ground Always 10 kΩ or higher
      H58-7 (CTR-) - Body ground Always 10 kΩ or higher
      H58-1 (WF1+) - Body ground Always 10 kΩ or higher
      H58-2 (WF2+) - Body ground Always 10 kΩ or higher
    16. w/ Manual (SOS) Switch:

      Measure the resistance between the DCM (telematics transceiver) and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H67-5 (SPO+) - Body ground Always 10 kΩ or higher
      H67-6 (SPO-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Resistance check
      Fig 1: Inspecting Front No. 1 Speaker Assembly
      GTY355284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        FOR 10 SPEAKERS

        Tester Connection Condition Specified Condition
        J1-1 - J1-2 Always 3.2 to 4.8 Ω
        K1-1 - K1-2 Always 3.2 to 4.8 Ω
        FOR 13 SPEAKERS

        Tester Connection Condition Specified Condition
        J1-1 - J1-2 Always 5 to 7 Ω
        K1-1 - K1-2 Always 5 to 7 Ω
        TEXT IN ILLUSTRATION

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

    NG → See step   14 

    OK: Go to next step 

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Resistance check
      Fig 2: Inspecting Front No. 2 Speaker Assembly
      GTY348000Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        FOR 10 SPEAKERS

        Tester Connection Condition Specified Condition
        I3-2 - I3-1 Always 3.2 to 4.8 Ω
        I5-2 - I5-1 Always 3.2 to 4.8 Ω
        FOR 13 SPEAKERS

        Tester Connection Condition Specified Condition
        I3-2 - I3-1 Always 4.6 to 7 Ω
        I5-2 - I5-1 Always 4.6 to 7 Ω
        TEXT IN ILLUSTRATION

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

    NG → See step   20 

    OK: Go to next step 

  6. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Resistance check
      Fig 3: Inspecting Front No. 3 Speaker Assembly
      GTY353967Courtesy 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
        I4-2 - I4-1 Always 10 kΩ or higher
        I6-2 - I6-1 Always 10 kΩ or higher
        TEXT IN ILLUSTRATION

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

    NG → See step   19 

    OK: Go to next step 

  7. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY 
    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. 3 speaker assemblies that were disconnected.
      • When there is a possibility that either the right or left 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   8 

    OK → END (FRONT NO. 3 SPEAKER ASSEMBLY WAS DEFECTIVE) 

  8. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY 
    1. Resistance check
      Fig 4: Inspecting Front No. 4 Speaker Assembly
      GTY357146Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        FOR 10 SPEAKERS

        Tester Connection Condition Specified Condition
        I2-1 (-) - I2-2 (+) Always 3.2 to 4.8 Ω
        FOR 13 SPEAKERS

        Tester Connection Condition Specified Condition
        I2-1 (-) - I2-2 (+) Always 4.6 to 7 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Front No. 4 Speaker Assembly)

    NG → See step   16 

    OK: Go to next step 

  9. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Model Proceed to
      for 10 Speakers A
      for 13 Speakers B

    B → See step   11 

    A: Go to next step 

  10. INSPECT REAR SPEAKER ASSEMBLY 
    1. Resistance check
      Fig 5: Inspecting Rear Speaker Assembly
      GTY356706Courtesy 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
        L4-1 - L4-2 Always 3.2 to 4.8 Ω
        M4-1 - M4-2 Always 3.2 to 4.8 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Rear Speaker Assembly)
    2. Proceed to the next step based on the inspection result.

      Result

      Condition Proceed to
      NG A
      OK B

    B → See step   12 

    A → See step   15 

  11. INSPECT REAR NO. 2 SPEAKER ASSEMBLY 
    1. Resistance check
      Fig 6: Inspecting Front No. 2 Speaker Assembly
      GTY358604Courtesy 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
        Q10-1 (-) - Q10-2 (+) Always 4.6 to 7 Ω
        P14-1 (-) - P14-2 (+) Always 4.6 to 7 Ω
        TEXT IN ILLUSTRATION

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

    NG → See step   22 

    OK: Go to next step 

  12. INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX 
    1. Resistance check
      Fig 7: Inspecting Front No. 1 Speaker Assembly With Box
      GTY354765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        FOR 10 SPEAKERS

        Tester Connection Condition Specified Condition
        P15-2 (WF1+) - P15-4 (WF2+) Always 1.6 to 2.4 Ω
        FOR 13 SPEAKERS

        Tester Connection Condition Specified Condition
        P15-2 (WF1+) - P15-4 (WF2+) Always 11.6 to 12.4 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (No. 1 Speaker Assembly with Box)
    2. Proceed to the next step based on the inspection result.

      Result

      Condition Proceed to
      OK (w/ Manual (SOS) Switch) A
      OK (w/o Manual (SOS) Switch) B
      NG C

    B → See step   17 

    C → See step   21 

    A: Go to next step 

  13. INSPECT DCM (TELEMATICS TRANSCEIVER) 
    1. Resistance check
      Fig 8: Inspecting DCM (Telematics Transceiver)
      GTY356422Courtesy 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
        H67-2 (SPI+) - H67-5 (SPO+) Always Below 1 Ω
        H67-3 (SPI-) - H67-6 (SPO-) Always Below 1 Ω
        H67-2 (SPI+) - H67-3 (SPI-) Always 10 kΩ or higher
        H67-5 (SPO+) - H67-6 (SPO-) Always 10 kΩ or higher
        H67-2 (SPI+) - Body ground Always 10 kΩ or higher
        H67-3 (SPI-) - Body ground Always 10 kΩ or higher
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (DCM (Telematics Transceiver))

    NG → See step   18 

    OK → See step   17 

  14. REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL 
  15. REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL 
  16. REPLACE FRONT NO. 4 SPEAKER ASSEMBLY. Refer to  REMOVAL 
  17. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  18. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL 
  19. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY. Refer to  REMOVAL 
  20. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL 
  21. REPLACE NO. 1 SPEAKER ASSEMBLY WITH BOX. Refer to  REMOVAL 
  22. REPLACE REAR NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL 
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