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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 256 (Navigation System (Hybrid) - Diagnostic Codes (1 Of 2)) >> NAVIGATION SYSTEM (for HV Model) >> DTC B15C3: Speaker Output Short [06/2018 - 10/2019] >> Procedure

DTC B15C3: Speaker Output Short [06/2018 - 10/2019]: Procedure

WARNING: This page is about a different car, the 2022 Lexus ES 300h, 2021 Lexus ES 300h, 2020 Lexus ES 300h, and 2019 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      for 10 Speakers (w/ Manual (SOS) Switch) A
      for 10 Speakers (w/o Manual (SOS) Switch) B
      for 17 Speakers (w/ Manual (SOS) Switch) C
      for 17 Speakers (w/o Manual (SOS) Switch) D

    Result: 

    B 

    See step  5

    Result: 

    C 

    See step  11

    Result: 

    D 

    See step  14

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND) 
    1. Disconnect the G11 stereo component amplifier assembly connector.
    2. Disconnect the G10 DCM (telematics transceiver) connector.
    3. Disconnect the G79 front No. 2 speaker assembly LH connector.
    4. Disconnect the J2 and J19 front No. 1 speaker assembly connectors.
    5. Disconnect the H6 front No. 3 speaker assembly connector.
    6. Disconnect the M1 and L6 rear speaker assembly connectors. (Door Trim Wood Panel Type, w/o Ambient Light)
    7. Disconnect the M1 and M4 rear speaker assembly connectors. (Except Door Trim Wood Panel Type)
    8. Disconnect the M1 and M4 rear speaker assembly connectors. (w/ Ambient Light)
    9. Disconnect the N75 speaker assembly with bracket connector.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G11-13 (FR+) or G10-2 (SPI+) - Body ground Always 10 kΩ or higher
      G11-28 (FR-) or G10-3 (SPI-) - Body ground Always 10 kΩ or higher
      G11-12 (FL+) or G79-2 (+) - Body ground Always 10 kΩ or higher
      G11-27 (FL-) or G79-1 (-) - Body ground Always 10 kΩ or higher
      G11-5 (WFR+) or J2-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-20 (WFR-) or J2-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-4 (WFL+) or J19-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-19 (WFL-) or J19-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-7 (CTR+) or H6-2 (+) - Body ground Always 10 kΩ or higher
      G11-22 (CTR-) or H6-1 (-) - Body ground Always 10 kΩ or higher
      G11-9 (RR+) or M1-2 (+) - Body ground Always 10 kΩ or higher
      G11-24 (RR-) or M1-1 (-) - Body ground Always 10 kΩ or higher
      G11-8 (RL+) or L6-2 (+) - Body ground*1 Always 10 kΩ or higher
      G11-23 (RL-) or L6-1 (-) - Body ground*1 Always 10 kΩ or higher
      G11-8 (RL+) or M4-2 (+) - Body ground*2, *3 Always 10 kΩ or higher
      G11-23 (RL-) or M4-1 (-) - Body ground*2, *3 Always 10 kΩ or higher
      G11-6 (WF1+) or N75-2 (WF1+) - Body ground Always 10 kΩ or higher
      G11-21 (WF1-) or N75-1 (WF1-) - Body ground Always 10 kΩ or higher
      1. *1: Door Trim Wood Panel Type, w/o Ambient Light
      2. *2: Except Door Trim Wood Panel Type
      3. *3: w/ Ambient Light

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND) 
    1. Disconnect the G10 DCM (telematics transceiver) connector.
    2. Disconnect the G78 front No. 2 speaker assembly RH connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G10-5 (SPO+) or G78-2 (+) - Body ground Always 10 kΩ or higher
      G10-6 (SPO-) or G78-1 (-) - 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 [06/2018 - 10/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY450683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (DCM (Telematics Transceiver))

      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+) or 5 (SPO+) - Body ground Always 10 kΩ or higher
      3 (SPI-) or 6 (SPO-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  6

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [06/2018 - 10/2019] 

  5. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND) 
    1. Disconnect the G11 stereo component amplifier assembly connector.
    2. Disconnect the G78 and G79 front No. 2 speaker assembly connectors.
    3. Disconnect the J2 and J19 front No. 1 speaker assembly connectors.
    4. Disconnect the H6 front No. 3 speaker assembly connector.
    5. Disconnect the M1 and M4 rear speaker assembly connectors.
    6. Disconnect the N75 speaker assembly with bracket connector.
    7. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G11-13 (FR+) or G78-2 (+) - Body ground Always 10 kΩ or higher
      G11-28 (FR-) or G78-1 (-) - Body ground Always 10 kΩ or higher
      G11-12 (FL+) or G79-2 (+) - Body ground Always 10 kΩ or higher
      G11-27 (FL-) or G79-1 (-) - Body ground Always 10 kΩ or higher
      G11-5 (WFR+) or J2-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-20 (WFR-) or J2-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-4 (WFL+) or J19-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-19 (WFL-) or J19-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-7 (CTR+) or H6-2 (+) - Body ground Always 10 kΩ or higher
      G11-22 (CTR-) or H6-1 (-) - Body ground Always 10 kΩ or higher
      G11-9 (RR+) or M1-2 (+) - Body ground Always 10 kΩ or higher
      G11-24 (RR-) or M1-1 (-) - Body ground Always 10 kΩ or higher
      G11-8 (RL+) or M4-2 (+) - Body ground Always 10 kΩ or higher
      G11-23 (RL-) or M4-1 (-) - Body ground Always 10 kΩ or higher
      G11-6 (WF1+) or N75-2 (WF1+) - Body ground Always 10 kΩ or higher
      G11-21 (WF1-) or N75-1 (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  6

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

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the front No. 1 speaker assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  7

  7. INSPECT REAR SPEAKER ASSEMBLY 
    1. Remove the rear speaker assembly.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the rear speaker assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  8

  8. INSPECT SPEAKER ASSEMBLY WITH BRACKET 
    1. Remove the speaker assembly with bracket.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the speaker assembly with bracket.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPEAKER ASSEMBLY WITH BRACKET. Refer to  REMOVAL [06/2018 - 08/2021] 

    Result: 

    OK 

    See step  9

  9. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Remove the front No. 3 speaker assembly.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the front No. 3 speaker assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021] 

    Result: 

    OK 

    See step  10

  10. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Remove the front No. 2 speaker assembly.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the front No. 2 speaker assembly.

      Refer to INSPECTION [06/2018 - ]

    3. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

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

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [06/2018 - 09/2022] 

  11. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND) 
    1. Disconnect the G11 stereo component amplifier assembly connector.
    2. Disconnect the G10 DCM (telematics transceiver) connector.
    3. Disconnect the G79 front No. 2 speaker assembly LH connector.
    4. Disconnect the J2 and J19 front No. 1 speaker assembly connectors.
    5. Disconnect the H6 front No. 3 speaker assembly connector.
    6. Disconnect the J1 and J18 front No. 4 speaker assembly connectors.
    7. Disconnect the M1 and M4 rear speaker assembly connectors.
    8. Disconnect the N75 speaker assembly with bracket connector.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G11-13 (FR+) or G10-2 (SPI+) - Body ground Always 10 kΩ or higher
      G11-28 (FR-) or G10-3 (SPI-) - Body ground Always 10 kΩ or higher
      G11-12 (FL+) or G79-2 (+) - Body ground Always 10 kΩ or higher
      G11-27 (FL-) or G79-1 (-) - Body ground Always 10 kΩ or higher
      G11-5 (WFR+) or J2-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-20 (WFR-) or J2-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-4 (WFL+) or J19-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-19 (WFL-) or J19-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-7 (CTR+) or H6-2 (+) - Body ground Always 10 kΩ or higher
      G11-22 (CTR-) or H6-1 (-) - Body ground Always 10 kΩ or higher
      G11-9 (RR+) or M1-2 (+) - Body ground Always 10 kΩ or higher
      G11-24 (RR-) or M1-1 (-) - Body ground Always 10 kΩ or higher
      G11-8 (RL+) or M4-2 (+) - Body ground Always 10 kΩ or higher
      G11-23 (RL-) or M4-1 (-) - Body ground Always 10 kΩ or higher
      G11-11 (TWR+) or J1-2 (+) - Body ground Always 10 kΩ or higher
      G11-26 (TWR-) or J1-1 (-) - Body ground Always 10 kΩ or higher
      G11-10 (TWL+) or J18-2 (+) - Body ground Always 10 kΩ or higher
      G11-25 (TWL-) or J18-1 (-) - Body ground Always 10 kΩ or higher
      G11-6 (WF1+) or N75-2 (WF1+) - Body ground Always 10 kΩ or higher
      G11-21 (WF1-) or N75-1 (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  12

  12. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND) 
    1. Disconnect the G10 DCM (telematics transceiver) connector.
    2. Disconnect the G78 front No. 2 speaker assembly RH connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G10-5 (SPO+) or G78-2 (+) - Body ground Always 10 kΩ or higher
      G10-6 (SPO-) or G78-1 (-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  13

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

      Refer to REMOVAL [06/2018 - 10/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY450683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (DCM (Telematics Transceiver))

      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+) or 5 (SPO+) - Body ground Always 10 kΩ or higher
      3 (SPI-) or 6 (SPO-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  15

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [06/2018 - 10/2019] 

  14. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND) 
    1. Disconnect the G11 stereo component amplifier assembly connector.
    2. Disconnect the G78 and G79 front No. 2 speaker assembly connectors.
    3. Disconnect the J2 and J19 front No. 1 speaker assembly connectors.
    4. Disconnect the H6 front No. 3 speaker assembly connector.
    5. Disconnect the J1 and J18 front No. 4 speaker assembly connectors.
    6. Disconnect the M1 and M4 rear speaker assembly connectors.
    7. Disconnect the N75 speaker assembly with bracket connector.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G11-13 (FR+) or G78-2 (+) - Body ground Always 10 kΩ or higher
      G11-28 (FR-) or G78-1 (-) - Body ground Always 10 kΩ or higher
      G11-12 (FL+) or G79-2 (+) - Body ground Always 10 kΩ or higher
      G11-27 (FL-) or G79-1 (-) - Body ground Always 10 kΩ or higher
      G11-5 (WFR+) or J2-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-20 (WFR-) or J2-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-4 (WFL+) or J19-2 (WF+) - Body ground Always 10 kΩ or higher
      G11-19 (WFL-) or J19-1 (WF-) - Body ground Always 10 kΩ or higher
      G11-7 (CTR+) or H6-2 (+) - Body ground Always 10 kΩ or higher
      G11-22 (CTR-) or H6-1 (-) - Body ground Always 10 kΩ or higher
      G11-9 (RR+) or M1-2 (+) - Body ground Always 10 kΩ or higher
      G11-24 (RR-) or M1-1 (-) - Body ground Always 10 kΩ or higher
      G11-8 (RL+) or M4-2 (+) - Body ground Always 10 kΩ or higher
      G11-23 (RL-) or M4-1 (-) - Body ground Always 10 kΩ or higher
      G11-11 (TWR+) or J1-2 (+) - Body ground Always 10 kΩ or higher
      G11-26 (TWR-) or J1-1 (-) - Body ground Always 10 kΩ or higher
      G11-10 (TWL+) or J18-2 (+) - Body ground Always 10 kΩ or higher
      G11-25 (TWL-) or J18-1 (-) - Body ground Always 10 kΩ or higher
      G11-6 (WF1+) or N75-2 (WF1+) - Body ground Always 10 kΩ or higher
      G11-21 (WF1-) or N75-1 - (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  15

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

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the front No. 1 speaker assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  16

  16. INSPECT SPEAKER ASSEMBLY WITH BRACKET 
    1. Remove the speaker assembly with bracket.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the speaker assembly with bracket.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPEAKER ASSEMBLY WITH BRACKET. Refer to  REMOVAL [06/2018 - 08/2021] 

    Result: 

    OK 

    See step  17

  17. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Remove the front No. 2 speaker assembly.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the front No. 2 speaker assembly.

      Refer to INSPECTION [06/2018 - ]

    3. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

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

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    See step  18

  18. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Remove the front No. 3 speaker assembly.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the front No. 3 speaker assembly.

      Refer to INSPECTION [06/2018 - ]

    3. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

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

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    See step  19

  19. REPLACE FRONT NO. 4 SPEAKER ASSEMBLY 
    1. Remove the front No. 4 speaker assembly.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the front No. 4 speaker assembly.

      Refer to INSPECTION [06/2018 - ]

    3. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

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

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    See step  20

  20. REPLACE REAR SPEAKER ASSEMBLY 
    1. Remove the rear speaker assembly.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the rear speaker assembly.

      Refer to INSPECTION [06/2018 - ]

    3. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

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

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [06/2018 - 09/2022] 

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