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DTC B15C3: Speaker Output Short [04/2020 - 10/2022]: Procedure

  1. CHECK DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Clear DTCs 

    2. Recheck for DTCs and check that no DTCs are output.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2020 - 05/2023] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT) 
    1. *1: for LH Side

      *2: for RH Side

      *3: for 13 Speakers

      *4: w/ Manual (SOS) Switch

    1. Disconnect the X49 stereo component amplifier assembly connector.
    2. Disconnect the Q5*1 and/or Q6*2 front No. 1 speaker assembly connector.
    3. Disconnect the S1*1 and/or R1*2 No. 1 speaker with box assembly connector.
    4. Disconnect the X41*1 and/or X40*2 No. 2 speaker with box assembly connector.
    5. Disconnect the Q7 front No. 2 speaker assembly connector.
    6. Disconnect the X11 No. 3 speaker with box assembly connector.
    7. Disconnect the P134 DCM (telematics transceiver) connector.*4
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      FOR LH SIDE

      Tester Connection Condition Specified Condition
      Q5-2 (+) - X49-12 (FL+) Always Below 1 Ω
      Q5-1 (-) - X49-27 (FL-) Always Below 1 Ω
      Q5-4 (+) - X49-11 (TWL+)*3 Always Below 1 Ω
      Q5-3 (-) - X49-26 (TWL-)*3 Always Below 1 Ω
      S1-2 (WF+) - X49-4 (WFL+) Always Below 1 Ω
      S1-1 (WF-) - X49-19 (WFL-) Always Below 1 Ω
      X41-2 (+) - X49-8 (SL+) Always Below 1 Ω
      X41-1 (-) - X49-23 (SL-) Always Below 1 Ω
      Q5-2 (+) - Body ground Always 10 kΩ or higher
      Q5-1 (-) - Body ground Always 10 kΩ or higher
      Q5-4 (+) - Body ground*3 Always 10 kΩ or higher
      Q5-3 (-) - Body ground*3 Always 10 kΩ or higher
      S1-2 (WF+) - Body ground Always 10 kΩ or higher
      S1-1 (WF-) - Body ground Always 10 kΩ or higher
      X41-2 (+) - Body ground Always 10 kΩ or higher
      X41-1 (-) - Body ground Always 10 kΩ or higher
      FOR RH SIDE (W/ MANUAL [SOS] SWITCH)

      Tester Connection Condition Specified Condition
      Q6-2 (+) - P134-3 (SPO+) Always Below 1 Ω
      Q6-1 (-) - P134-4 (SPO-) Always Below 1 Ω
      Q6-3 (-) - X49-29 (TWR-)*3 Always Below 1 Ω
      Q6-4 (+) - X49-14 (TWR+)*3 Always Below 1 Ω
      P134-1 (SPI+) - X49-13 (FR+) Always Below 1 Ω
      P134-2 (SPI-) - X49-28 (FR-) Always Below 1 Ω
      R1-2 (WF+) - X49-5 (WFR+) Always Below 1 Ω
      R1-1 (WF-) - X49-20 (WFR-) Always Below 1 Ω
      X40-2 (+) - X49-9 (SR+) Always Below 1 Ω
      X40-1 (-) - X49-24 (SR-) Always Below 1 Ω
      Q6-2 (+) - Body ground Always 10 kΩ or higher
      Q6-1 (-) - Body ground Always 10 kΩ or higher
      Q6-3 (-) - Body ground*3 Always 10 kΩ or higher
      Q6-4 (+) - Body ground*3 Always 10 kΩ or higher
      P134-1 (SPI+) - Body ground Always 10 kΩ or higher
      P134-2 (SPI-) - Body ground Always 10 kΩ or higher
      R1-2 (WF+) - Body ground Always 10 kΩ or higher
      R1-1 (WF-) - Body ground Always 10 kΩ or higher
      X40-2 (+) - Body ground Always 10 kΩ or higher
      X40-1 (-) - Body ground Always 10 kΩ or higher
      FOR RH SIDE (W/O MANUAL [SOS] SWITCH)

      Tester Connection Condition Specified Condition
      Q6-2 (+) - X49-13 (FR+) Always Below 1 Ω
      Q6-1 (-) - X49-28 (FR-) Always Below 1 Ω
      Q6-4 (+) - X49-14 (TWR+)*3 Always Below 1 Ω
      Q6-3 (-) - X49-29 (TWR-)*3 Always Below 1 Ω
      R1-2 (WF+) - X49-5 (WFR+) Always Below 1 Ω
      R1-1 (WF-) - X49-20 (WFR-) Always Below 1 Ω
      X40-2 (+) - X49-9 (SR+) Always Below 1 Ω
      X40-1 (-) - X49-24 (SR-) Always Below 1 Ω
      Q6-2 (+) - Body ground Always 10 kΩ or higher
      Q6-1 (-) - Body ground Always 10 kΩ or higher
      Q6-4 (+) - Body ground*3 Always 10 kΩ or higher
      Q6-3 (-) - Body ground*3 Always 10 kΩ or higher
      R1-2 (WF+) - Body ground Always 10 kΩ or higher
      R1-1 (WF-) - Body ground Always 10 kΩ or higher
      X40-2 (+) - Body ground Always 10 kΩ or higher
      X40-1 (-) - Body ground Always 10 kΩ or higher
      FOR CENTER SIDE

      Tester Connection Condition Specified Condition
      Q7-4 (CTR+) - X49-10 (MR+)*3 Always Below 1 Ω
      Q7-3 (CTR-) - X49-25 (MR-)*3 Always Below 1 Ω
      Q7-2 (+) - X49-7 (CTR+) Always Below 1 Ω
      Q7-1 (-) - X49-22 (CTR-) Always Below 1 Ω
      X11-2 (WF1+) - X49-6 (WF1+) Always Below 1 Ω
      X11-1 (WF1-) - X49-21 (WF1-) Always Below 1 Ω
      Q7-4 (CTR+) - Body ground*3 Always 10 kΩ or higher
      Q7-3 (CTR-) - Body ground*3 Always 10 kΩ or higher
      Q7-2 (+) - Body ground Always 10 kΩ or higher
      Q7-1 (-) - Body ground Always 10 kΩ or higher
      X11-2 (WF1+) - Body ground Always 10 kΩ or higher
      X11-1 (WF1-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CHECK VEHICLE TYPE 
    1. Check the vehicle type.

      Result

      Result Proceed to
      for 12 Speakers A
      for 13 Speakers B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  4

  4. INSPECT NO. 1 SPEAKER WITH BOX ASSEMBLY 
    1. Remove the No. 1 speaker with box assembly.

      Refer to REMOVAL [03/2017 - ]

    2. Inspect the No. 1 speaker with box assembly.

      Refer to INSPECTION [03/2017 - 05/2023]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 1 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

    Result: 

    OK 

    See step  5

  5. INSPECT NO. 3 SPEAKER WITH BOX ASSEMBLY 
    1. Remove the No. 3 speaker with box assembly.

      Refer to REMOVAL [03/2017 - ]

    2. Inspect the No. 3 speaker with box assembly.

      Refer to INSPECTION [03/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 3 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

    Result: 

    OK 

    See step  6

  6. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Remove the front No. 2 speaker assembly.

      Refer to REMOVAL [03/2017 - ]

    2. Inspect the front No. 2 speaker assembly.

      Refer to INSPECTION [03/2017 - ]

      Result

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

    Result: 

    B 

    See step  8

    Result: 

    C 

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

    Result: 

    A 

    See step  7

  7. INSPECT DCM (TELEMATICS TRANSCEIVER) (SPO+, SPO-, SPI+, SPI-) 
    1. Remove the DCM (telematics transceiver).

      Refer to REMOVAL [04/2020 - 05/2023]

      GTY961392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (DCM [Telematics Transceiver])
    2. Measure the resistance according to the value(s) in the table below.

      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

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  8

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [04/2020 - 05/2023] 

  8. CHECK FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Replace the front No. 1 speaker assembly with a new or known good one.

      Refer to REMOVAL [03/2017 - ]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Clear DTCs 

    3. Recheck for DTCs and check that no DTCs are output.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (FRONT NO. 1 SPEAKER ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    See step  9

  9. CHECK NO. 2 SPEAKER WITH BOX ASSEMBLY 
    1. Replace the No. 2 speaker with box assembly with a new or known good one.

      Refer to REMOVAL [03/2017 - 05/2023]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Clear DTCs 

    3. Recheck for DTCs and check that no DTCs are output.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (NO. 2 SPEAKER WITH BOX ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023] 

  10. INSPECT NO. 1 SPEAKER WITH BOX ASSEMBLY 
    1. Remove the No. 1 speaker with box assembly.

      Refer to REMOVAL [03/2017 - ]

    2. Inspect the No. 1 speaker with box assembly.

      Refer to INSPECTION [03/2017 - 05/2023]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 1 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

    Result: 

    OK 

    See step  11

  11. INSPECT NO. 3 SPEAKER WITH BOX ASSEMBLY 
    1. Remove the No. 3 speaker with box assembly.

      Refer to REMOVAL [03/2017 - ]

    2. Inspect the No. 3 speaker with box assembly.

      Refer to INSPECTION [03/2017 - ]

      Result

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

    Result: 

    B 

    See step  13

    Result: 

    C 

    REPLACE NO. 3 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

    Result: 

    A 

    See step  12

  12. INSPECT DCM (TELEMATICS TRANSCEIVER) (SPO+, SPO-, SPI+, SPI-) 
    1. Remove the DCM (telematics transceiver).

      Refer to REMOVAL [04/2020 - 05/2023]

      GTY961392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (DCM [Telematics Transceiver])
    2. Measure the resistance according to the value(s) in the table below.

      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

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  13

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [04/2020 - 05/2023] 

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

      Refer to REMOVAL [03/2017 - ]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Clear DTCs 

    3. Recheck for DTCs and check that no DTCs are output.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    See step  14

  14. CHECK FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Replace the front No. 1 speaker assembly with a new or known good one.

      Refer to REMOVAL [03/2017 - ]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Clear DTCs 

    3. Recheck for DTCs and check that no DTCs are output.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (FRONT NO. 1 SPEAKER ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    See step  15

  15. CHECK NO. 2 SPEAKER WITH BOX ASSEMBLY 
    1. Replace the No. 2 speaker with box assembly with a new or known good one.

      Refer to REMOVAL [03/2017 - 05/2023]

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Clear DTCs 

    3. Recheck for DTCs and check that no DTCs are output.

      Refer to DTC CHECK / CLEAR [04/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (NO. 2 SPEAKER WITH BOX ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023] 

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