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Speaker Circuit: Procedure

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

      Result

      Result Proceed to
      w/o Front Center Speaker A
      w/ Front Center Speaker B

    B → See step   8 

    A: Go to next step 

  2. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the P64 stereo component amplifier assembly connector.
    2. Disconnect the L5 and M12 front No. 2 and No. 3 speaker assembly connectors.
    3. Disconnect the L1 and M13 front No. 1 speaker assembly connectors.
    4. Disconnect the P46 and Q21 rear speaker assembly connectors.
    5. Disconnect the J101 DCM (telematics transceiver) connector (w/ Manual (SOS) Switch).
    6. w/o Manual (SOS) Switch:

      Measure the resistance between the front No. 2 and 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
      P64-13 (FR+) - L5-1 (+) Always Below 1 Ω
      P64-28 (FR-) - L5-2 (-) Always Below 1 Ω
    7. 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
      P64-13 (FR+) - J101-2 (SPI+) Always Below 1 Ω
      P64-28 (FR-) - J101-3 (SPI-) Always Below 1 Ω
    8. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 2 and 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
      J101-5 (SPO+) - L5-1 (+) Always Below 1 Ω
      J101-6 (SPO-) - L5-2 (-) Always Below 1 Ω
    9. Measure the resistance between the front No. 2 and 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
      P64-12 (FL+) - M12-1 (+) Always Below 1 Ω
      P64-27 (FL-) - M12-2 (-) Always Below 1 Ω
    10. 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
      P64-5 (WFR+) - L1-1 Always Below 1 Ω
      P64-20 (WFR-) - L1-2 Always Below 1 Ω
      P64-4 (WFL+) - M13-1 Always Below 1 Ω
      P64-19 (WFL-) - M13-2 Always Below 1 Ω
    11. 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
      P64-15 (RR+) - P46-1 Always Below 1 Ω
      P64-30 (RR-) - P46-2 Always Below 1 Ω
      P64-14 (RL+) - Q21-1 Always Below 1 Ω
      P64-29 (RL-) - Q21-2 Always Below 1 Ω
    12. 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
      P64-13 (FR+) - Body ground Always 10 kΩ or higher
      P64-28 (FR-) - Body ground Always 10 kΩ or higher
      P64-12 (FL+) - Body ground Always 10 kΩ or higher
      P64-27 (FL-) - Body ground Always 10 kΩ or higher
      P64-5 (WFR+) - Body ground Always 10 kΩ or higher
      P64-20 (WFR-) - Body ground Always 10 kΩ or higher
      P64-4 (WFL+) - Body ground Always 10 kΩ or higher
      P64-19 (WFL-) - Body ground Always 10 kΩ or higher
      P64-15 (RR+) - Body ground Always 10 kΩ or higher
      P64-30 (RR-) - Body ground Always 10 kΩ or higher
      P64-14 (RL+) - Body ground Always 10 kΩ or higher
      P64-29 (RL-) - Body ground Always 10 kΩ or higher
    13. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 2 and No. 3 speaker assembly RH 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

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Remove the front No. 2 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY412132Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      L5-1 (+) - L5-2 (-) Always 10 kΩ or higher
      L5-1-2 - L5-1-4 Always 3.2 to 4.8 Ω
      L5-1 (+) - L5-1-1 Always Below 1 Ω
      L5-2 (-) - L5-1-3 Always Below 1 Ω
      M12-1 (+) - M12-2 (-) Always 10 kΩ or higher
      M12-1-2 - M12-1-4 Always 3.2 to 4.8 Ω
      M12-1 (+) - M12-1-1 Always Below 1 Ω
      M12-2 (-) - M12-1-3 Always Below 1 Ω
      TEXT IN ILLUSTRATION

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

    NG → See step   23 

    OK: Go to next step 

  4. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Remove the front No. 3 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY407863Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 2 Always 10 kΩ or higher
      1 - 3 Always 3.2 to 4.8 Ω
      2 - 4 Always 10 kΩ or higher
      3 - 4 Always Below 1 Ω
      TEXT IN ILLUSTRATION

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

    NG → See step   24 

    OK: Go to next step 

  5. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL [08/2012 - ] .

      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 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. 3 SPEAKER ASSEMBLY WAS DEFECTIVE) 

  6. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Remove the front No. 1 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY406361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

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

    NG → See step   19 

    OK: Go to next step 

  7. INSPECT REAR SPEAKER ASSEMBLY 
    1. Remove the rear speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY411443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

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

      Result

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

    B → See step   18 

    C → See step   20 

    A → See step   27 

  8. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the P64 stereo component amplifier assembly connector.
    2. Disconnect the L5 and M12 front No. 2 and No. 3 speaker assembly connectors.
    3. Disconnect the L1 and M13 front No. 1 speaker assembly connectors.
    4. Disconnect the P46 and Q21 rear speaker assembly connectors.
    5. Disconnect the P45 and Q20 rear No. 2 speaker assembly connectors.
    6. Disconnect the P21 stereo component speaker assembly connector.
    7. Disconnect the K2 front No. 4 speaker assembly connector.
    8. Disconnect the J101 DCM (telematics transceiver) connector (w/ Manual (SOS) switch).
    9. w/o Manual (SOS) Switch:

      Measure the resistance between the front No. 2 and 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
      P64-13 (FR+) - L5-1 (+) Always Below 1 Ω
      P64-28 (FR-) - L5-2 (-) Always Below 1 Ω
    10. 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
      P64-13 (FR+) - J101-2 (SPI+) Always Below 1 Ω
      P64-28 (FR-) - J101-3 (SPI-) Always Below 1 Ω
    11. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 2 and 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
      J101-5 (SPO+) - L5-1 (+) Always Below 1 Ω
      J101-6 (SPO-) - L5-2 (-) Always Below 1 Ω
    12. Measure the resistance between the front No. 2 and 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
      P64-12 (FL+) - M12-1 (+) Always Below 1 Ω
      P64-27 (FL-) - M12-2 (-) Always Below 1 Ω
    13. 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
      P64-5 (WFR+) - L1-1 Always Below 1 Ω
      P64-20 (WFR-) - L1-2 Always Below 1 Ω
      P64-4 (WFL+) - M13-1 Always Below 1 Ω
      P64-19 (WFL-) - M13-2 Always Below 1 Ω
    14. Measure the resistance between each of the rear 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
      P64-15 (RR+) - P45-1 (+) Always Below 1 Ω
      P64-30 (RR-) - P45-3 (-) Always Below 1 Ω
      P64-14 (RL+) - Q20-1 (+) Always Below 1 Ω
      P64-29 (RL-) - Q20-3 (-) Always Below 1 Ω
    15. Measure the resistance between each of the rear No. 2 speaker assemblies and the rear speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P45-2 (+TW) - P46-1 Always Below 1 Ω
      P45-4 (-TW) - P46-2 Always Below 1 Ω
      Q20-2 (+TW) - Q21-1 Always Below 1 Ω
      Q20-4 (-TW) - Q21-2 Always Below 1 Ω
    16. Measure the resistance between the stereo component 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
      P64-9 (WF1+) - P21-1 Always Below 1 Ω
      P64-10 (WF2+) - P21-2 Always Below 1 Ω
    17. 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
      P64-7 (CTR+) - K2-1 Always Below 1 Ω
      P64-22 (CTR-) - K2-2 Always Below 1 Ω
    18. 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
      P64-13 (FR+) - Body ground Always 10 kΩ or higher
      P64-28 (FR-) - Body ground Always 10 kΩ or higher
      P64-12 (FL+) - Body ground Always 10 kΩ or higher
      P64-27 (FL-) - Body ground Always 10 kΩ or higher
      P64-5 (WFR+) - Body ground Always 10 kΩ or higher
      P64-20 (WFR-) - Body ground Always 10 kΩ or higher
      P64-4 (WFL+) - Body ground Always 10 kΩ or higher
      P64-19 (WFL-) - Body ground Always 10 kΩ or higher
      P64-15 (RR+) - Body ground Always 10 kΩ or higher
      P64-30 (RR-) - Body ground Always 10 kΩ or higher
      P64-14 (RL+) - Body ground Always 10 kΩ or higher
      P64-29 (RL-) - Body ground Always 10 kΩ or higher
      P64-9 (WF1+) - Body ground Always 10 kΩ or higher
      P64-10 (WF2+) - Body ground Always 10 kΩ or higher
      P64-7 (CTR+) - Body ground Always 10 kΩ or higher
      P64-22 (CTR-) - Body ground Always 10 kΩ or higher
    19. w/ Manual (SOS) Switch:

      Measure the resistance between the front No. 2 and No. 3 speaker assembly RH 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
    20. Measure the resistance between each of the rear speaker assemblies and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P46-1 - Body ground Always 10 kΩ or higher
      P46-2 - Body ground Always 10 kΩ or higher
      Q21-1 - Body ground Always 10 kΩ or higher
      Q21-2 - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  9. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Remove the front No. 2 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY412132Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      L5-1-2 - L5-1-4 Always 10 kΩ or higher
      L5-1 (+) - L5-1-1 Always Below 1 Ω
      L5-1-1 - L5-1-2 Always Below 1 Ω
      L5-2 (-) - L5-1-3 Always Below 1 Ω
      L5-1-3 - L5-1-4 Always Below 1 Ω
      M12-1-2 - M12-1-4 Always 10 kΩ or higher
      M12-1 (+) - M12-1-1 Always Below 1 Ω
      M12-1-1 - M12-1-2 Always Below 1 Ω
      M12-2 (-) - M12-1-3 Always Below 1 Ω
      M12-1-3 - M12-1-4 Always Below 1 Ω
      TEXT IN ILLUSTRATION

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

    NG → See step   23 

    OK: Go to next step 

  10. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL [08/2012 - ] .

      OK

      Malfunction disappears.

      HINT: 

      • 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 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   11 

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

  11. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Remove the front No. 3 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY407863Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 3 Always 4.8 to 6.4 Ω
      TEXT IN ILLUSTRATION

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

    NG → See step   24 

    OK: Go to next step 

  12. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Remove the front No. 1 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY406361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 2 Always 5.0 to 8.5 Ω
      TEXT IN ILLUSTRATION

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

    NG → See step   19 

    OK: Go to next step 

  13. INSPECT REAR SPEAKER ASSEMBLY 
    1. Remove the rear speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY411443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 2 Always 5.0 to 7.0 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Rear Speaker Assembly)

    NG → See step   21 

    OK: Go to next step 

  14. INSPECT REAR NO. 2 SPEAKER ASSEMBLY 
    1. Remove the rear No. 2 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY407046Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

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

    NG → See step   25 

    OK: Go to next step 

  15. REPLACE REAR NO. 2 SPEAKER ASSEMBLY 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL [08/2012 - ] .

      OK

      Malfunction disappears.

      HINT: 

      • Connect all the connectors to the rear No. 2 speaker assemblies 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 → See step   16 

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

  16. INSPECT STEREO COMPONENT SPEAKER ASSEMBLY 
    1. Remove the stereo component speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY411443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 2 Always 10 to 17 Ω
      TEXT IN ILLUSTRATION

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

    NG → See step   28 

    OK: Go to next step 

  17. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY 
    1. Remove the front No. 4 speaker assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY416540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 2 Always 4.8 to 6.4 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Front No. 4 Speaker Assembly)
    3. Proceed to the next step based on the inspection result.

      Result

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

    B → See step   18 

    C → See step   22 

    A → See step   27 

  18. INSPECT DCM (TELEMATICS TRANSCEIVER) 
    1. Remove the DCM (telematics transceiver).
    2. Measure the resistance according to the value(s) in the table below.
      GTY414434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      2 (SPI+) - 5 (SPO+) Always Below 1 Ω
      3 (SPI-) - 6 (SPO-) Always Below 1 Ω
      2 (SPI+) - 3 (SPI-) Always 10 kΩ or higher
      5 (SPO+) - 6 (SPO-) Always 10 kΩ or higher
      2 (SPI+) - Body ground Always 10 kΩ or higher
      3 (SPI-) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

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

    NG → See step   26 

    OK → See step   27 

  19. REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
  20. REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
  21. REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
  22. REPLACE FRONT NO. 4 SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
  23. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
  24. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
  25. REPLACE REAR NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
  26. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [08/2012 - ] 
  27. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2012 - ] 
  28. REPLACE STEREO COMPONENT SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2012 - ] 
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