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Speaker Circuit [10/2022 - ]: Procedure

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

      Result

      Result Proceed to
      w/ DCM (Telematics Transceiver) A
      w/o DCM (Telematics Transceiver) B

    Result: 

    B 

    See step  9

    Result: 

    A 

    See step  2

  2. CHECK SPEAKER (OPERATION CHECK) 
    1. Enter diagnostic mode.
      GTY917371Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Refer to DIAGNOSIS SYSTEM [10/2022 - ]

    2. Select "Failure Diagnosis" from the "Service Menu" screen.
    3. Select "System Check" from the "Failure Diagnosis" screen.
    4. Select "SPCheck ON" from the "System Check Mode" screen and perform speaker check.

      OK

      Each speaker outputs sound from the selected audio source properly.

      Result

      Result Proceed to
      Front No. 1 speaker assembly or front No. 2 speaker assembly does not output sound A
      Rear speaker assembly does not output sound B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT) 
    1. Disconnect the H9 radio and display receiver assembly connector.
    2. Disconnect the J1 and J17 front No. 1 speaker assembly connectors.
    3. Disconnect the H117 and H73 front No. 2 speaker assembly connectors.
    4. Disconnect the H12 DCM (telematics transceiver) connector.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H9-2 (FL+) - H73-4 (TWL+) Always Below 1 Ω
      H9-7 (FL-) - H73-2 (TWL-) Always Below 1 Ω
      H9-1 (FR+) - H12-1 (SPI+) Always Below 1 Ω
      H9-6 (FR-) - H12-2 (SPI-) Always Below 1 Ω
      H12-3 (SPO+) - H117-4 (+TW) Always Below 1 Ω
      H12-4 (SPO-) - H117-2 (-TW) Always Below 1 Ω
      J17-2 - H73-3 (+) Always Below 1 Ω
      J17-1 - H73-1 (-) Always Below 1 Ω
      J1-2 - H117-3 (+) Always Below 1 Ω
      J1-1 - H117-1 (-) Always Below 1 Ω
      H9-2 (FL+) or H73-4 (TWL+) - Body ground Always 10 kΩ or higher
      H9-7 (FL-) or H73-2 (TWL-) - Body ground Always 10 kΩ or higher
      H9-1 (FR+) or H12-1 (SPI+) - Body ground Always 10 kΩ or higher
      H9-6 (FR-) or H12-2 (SPI-) - Body ground Always 10 kΩ or higher
      H12-3 (SPO+) or H117-4 (+TW) - Body ground Always 10 kΩ or higher
      H12-4 (SPO-) or H117-2 (-TW) - Body ground Always 10 kΩ or higher
      J17-2 or H73-3 (+) - Body ground Always 10 kΩ or higher
      J17-1 or H73-1 (-) - Body ground Always 10 kΩ or higher
      J1-2 or H117-3 (+) - Body ground Always 10 kΩ or higher
      J1-1 or H117-1 (-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. INSPECT DCM (TELEMATICS TRANSCEIVER) 
    1. Remove the DCM (telematics transceiver).

      Refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]

    2. Measure the resistance according to the value(s) in the table below.
      GTY1111149Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (DCM (Telematics Transceiver))

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (SPI+) - 3 (SPO+) Always Below 1 Ω
      2 (SPI-) - 4 (SPO-) Always Below 1 Ω
      1 (SPI+) - 2 (SPI-) Always 10 kΩ or higher
      3 (SPO+) - 4 (SPO-) Always 10 kΩ or higher
      1 (SPI+) or 3 (SPO+) - Body ground Always 10 kΩ or higher
      2 (SPI-) or 4 (SPO-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  5

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

    Result: 

    OK 

    See step  6

  6. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Replace the front No. 2 speaker assembly with a new or known good one.

      Refer to REMOVAL [12/2019 - ]

    2. Check if the malfunction disappears.

      Result

      Result Proceed to
      Malfunction disappears A
      Malfunction occurs B

    Result: 

    A 

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE) 

    Result: 

    B 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

  7. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT) 
    1. Disconnect the H9 radio and display receiver assembly connector.
    2. Disconnect the K1 and K6 rear speaker assembly connectors.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H9-3 (RL+) - K6-2 Always Below 1 Ω
      H9-8 (RL-) - K6-1 Always Below 1 Ω
      H9-4 (RR+) - K1-2 Always Below 1 Ω
      H9-9 (RR-) - K1-1 Always Below 1 Ω
      H9-3 (RL+) or K6-2 - Body ground Always 10 kΩ or higher
      H9-8 (RL-) or K6-1 - Body ground Always 10 kΩ or higher
      H9-4 (RR+) or K1-2 - Body ground Always 10 kΩ or higher
      H9-9 (RR-) or K1-1 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. INSPECT REAR SPEAKER ASSEMBLY 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

  9. CHECK SPEAKER (OPERATION CHECK) 
    1. Enter diagnostic mode.

      Refer to DIAGNOSIS SYSTEM [10/2022 - ]

      GTY917371Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Select "Failure Diagnosis" from the "Service Menu" screen.
    3. Select "System Check" from the "Failure Diagnosis" screen.
    4. Select "SPCheck ON" from the "System Check Mode" screen and perform speaker check.

      OK

      Each speaker outputs sound from the selected audio source properly.

      Result

      Not Operating Speaker Proceed to
      Front No. 1 speaker assembly or front No. 2 speaker assembly A
      Rear speaker assembly B

    Result: 

    B 

    See step  13

    Result: 

    A 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY) 
    1. Disconnect the H9 radio and display receiver assembly connector.
    2. Disconnect the J1 and J17 front No. 1 speaker assembly connectors.
    3. Disconnect the H117 and H73 front No. 2 speaker assembly connectors.
    4. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H9-1 (FR+) - H117-4 (+TW) Always Below 1 Ω
      H9-6 (FR-) - H117-2 (-TW) Always Below 1 Ω
      H9-2 (FL+) - H73-4 (TWL+) Always Below 1 Ω
      H9-7 (FL-) - H73-2 (TWL-) Always Below 1 Ω
      J1-2 - H117-3 (+) Always Below 1 Ω
      J1-1 - H117-1 (-) Always Below 1 Ω
      J17-2 - H73-3 (+) Always Below 1 Ω
      J17-1 - H73-1 (-) Always Below 1 Ω
      H9-1 (FR+) or H117-4 (+TW) - Body ground Always 10 kΩ or higher
      H9-6 (FR-) or H117-2 (-TW) - Body ground Always 10 kΩ or higher
      H9-2 (FL+) or H73-4 (TWL+) - Body ground Always 10 kΩ or higher
      H9-7 (FL-) or H73-2 (TWL-) - Body ground Always 10 kΩ or higher
      J1-2 or H117-3 (+) - Body ground Always 10 kΩ or higher
      J1-1 or H117-1 (-) - Body ground Always 10 kΩ or higher
      J17-2 or H73-3 (+) - Body ground Always 10 kΩ or higher
      J17-1 or H73-1 (-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  11

  11. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

    Result: 

    OK 

    See step  12

  12. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 

    Refer to REMOVAL [12/2019 - ]

    OK

    Malfunction disappears.

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

  13. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY) 
    1. Disconnect the H9 radio and display receiver assembly connector.
    2. Disconnect the K1 and K6 rear speaker assembly connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H9-4 (RR+) - K1-2 Always Below 1 Ω
      H9-9 (RR-) - K1-1 Always Below 1 Ω
      H9-3 (RL+) - K6-2 Always Below 1 Ω
      H9-8 (RL-) - K6-1 Always Below 1 Ω
      H9-4 (RR+) or K1-2 - Body ground Always 10 kΩ or higher
      H9-9 (RR-) or K1-1 - Body ground Always 10 kΩ or higher
      H9-3 (RL+) or K6-2 - Body ground Always 10 kΩ or higher
      H9-8 (RL-) or K6-1 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  14

  14. INSPECT REAR SPEAKER ASSEMBLY 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

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