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Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio And Visual System (8 Inch Display) (Diagnostic Codes) (1 Of 2) >> AUDIO AND VISUAL SYSTEM (for 8 Inch Display) >> DTC B15C3: Speaker Output Short [03/2018 - 08/2019] >> Procedure

DTC B15C3: Speaker Output Short [03/2018 - 08/2019]: Procedure

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

      Result

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

    Result: 

    B 

    See step  3

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY OR SPEAKERS - BODY GROUND) 
    1. Disconnect the J66 stereo component amplifier assembly connector.
    2. Disconnect the K2 front No. 3 speaker assembly connector.
    3. Disconnect the K5 and K7 front No. 2 speaker assembly connectors. (for 12 Speakers)
    4. Disconnect the K6 and K8 front No. 2 speaker assembly connectors. (for 9 Speakers)
    5. Disconnect the M3 and N3 front No. 1 speaker assembly connectors.
    6. Disconnect the O5 and P5 rear No. 2 speaker assembly connectors.
    7. Disconnect the S53 rear No. 3 speaker assembly connector. (for 12 Speakers)
    8. Measure the resistance between the stereo component amplifier assembly or the speakers and body ground to check for a short in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J66-7 (CTR+) or K2-2 - Body ground Always 10 kΩ or higher
      J66-22 (CTR-) or K2-1 - Body ground Always 10 kΩ or higher
      J66-13 (FR+) or K6-4 - Body ground*1 Always 10 kΩ or higher
      J66-13 (FR+) or K5-2 - Body ground*2 Always 10 kΩ or higher
      J66-28 (FR-) or K6-2 - Body ground*1 Always 10 kΩ or higher
      J66-28 (FR-) or K5-1 - Body ground*2 Always 10 kΩ or higher
      J66-12 (FL+) or K8-4 - Body ground*1 Always 10 kΩ or higher
      J66-12 (FL+) or K7-2 - Body ground*2 Always 10 kΩ or higher
      J66-27 (FL-) or K8-2 - Body ground*1 Always 10 kΩ or higher
      J66-27 (FL-) or K7-1 - Body ground*2 Always 10 kΩ or higher
      J66-5 (WFR+) or M3-1 - Body ground Always 10 kΩ or higher
      J66-20 (WFR-) or M3-2 - Body ground Always 10 kΩ or higher
      J66-4 (WFL+) or N3-1 - Body ground Always 10 kΩ or higher
      J66-19 (WFL-) or N3-2 - Body ground Always 10 kΩ or higher
      J66-15 (RR+) or O5-4 (+TW) - Body ground Always 10 kΩ or higher
      J66-30 (RR-) or O5-2 (-TW) - Body ground Always 10 kΩ or higher
      J66-14 (RL+) or P5-4 (+TW) - Body ground Always 10 kΩ or higher
      J66-29 (RL-) or P5-2 (-TW) - Body ground Always 10 kΩ or higher
      J66-6 (WF1+) or S53-1 - Body ground*3 Always 10 kΩ or higher
      J66-21 (WF1-) or S53-2 - Body ground*3 Always 10 kΩ or higher
      J66-6 (WF1+) or S53-2 - Body ground*4 Always 10 kΩ or higher
      J66-21 (WF1-) or S53-1 - Body ground*4 Always 10 kΩ or higher
      1. *1: for 9 Speakers
      2. *2: for 12 Speakers
      3. *3: for 12 Speakers without Rear No. 2 Seat
      4. *4: for 12 Speakers with Rear No. 2 Seat

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  5

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY, DCM (TELEMATICS TRANSCEIVER) OR SPEAKERS - BODY GROUND) 
    1. Disconnect the J66 stereo component amplifier assembly connector.
    2. Disconnect the J62 DCM (telematics transceiver) connector.
    3. Disconnect the K5 and K7 front No. 2 speaker assembly connectors. (for 12 Speakers)
    4. Disconnect the K6 and K8 front No. 2 speaker assembly connectors. (for 9 Speakers)
    5. Disconnect the M3 and N3 front No. 1 speaker assembly connectors.
    6. Disconnect the O5 and P5 rear No. 2 speaker assembly connectors.
    7. Disconnect the S53 rear No. 3 speaker assembly connector. (for 12 Speakers)
    8. Measure the resistance between the stereo component amplifier assembly, the DCM (telematics transceiver) or the speakers and body ground to check for a short in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J66-7 (CTR+) or J62-2 (SPI+) - Body ground Always 10 kΩ or higher
      J66-22 (CTR-) or J62-3 (SPI-) - Body ground Always 10 kΩ or higher
      J66-13 (FR+) or K5-2 - Body ground*1 Always 10 kΩ or higher
      J66-28 (FR-) or K5-1 - Body ground*1 Always 10 kΩ or higher
      J66-12 (FL+) or K7-2 - Body ground*1 Always 10 kΩ or higher
      J66-27 (FL-) or K7-1 - Body ground*1 Always 10 kΩ or higher
      J66-13 (FR+) or K6-4 - Body ground*2 Always 10 kΩ or higher
      J66-28 (FR-) or K6-2 - Body ground*2 Always 10 kΩ or higher
      J66-12 (FL+) or K8-4 - Body ground*2 Always 10 kΩ or higher
      J66-27 (FL-) or K8-2 - Body ground*2 Always 10 kΩ or higher
      J66-5 (WFR+) or M3-1 - Body ground Always 10 kΩ or higher
      J66-20 (WFR-) or M3-2 - Body ground Always 10 kΩ or higher
      J66-4 (WFL+) or N3-1 - Body ground Always 10 kΩ or higher
      J66-19 (WFL-) or N3-2 - Body ground Always 10 kΩ or higher
      J66-15 (RR+) or O5-4 (+TW) - Body ground Always 10 kΩ or higher
      J66-30 (RR-) or O5-2 (-TW) - Body ground Always 10 kΩ or higher
      J66-14 (RL+) or P5-4 (+TW) - Body ground Always 10 kΩ or higher
      J66-29 (RL-) or P5-2 (-TW) - Body ground Always 10 kΩ or higher
      J66-6 (WF1+) or S53-1 - Body ground*3 Always 10 kΩ or higher
      J66-21 (WF1-) or S53-2 - Body ground*3 Always 10 kΩ or higher
      J66-6 (WF1+) or S53-2 - Body ground*4 Always 10 kΩ or higher
      J66-21 (WF1-) or S53-1 - Body ground*4 Always 10 kΩ or higher
      1. *1: for 12 Speakers
      2. *2: for 9 Speakers
      3. *3: for 12 Speakers without Rear No. 2 Seat
      4. *4: for 12 Speakers with Rear No. 2 Seat

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (FRONT NO. 3 SPEAKER ASSEMBLY OR DCM (TELEMATICS TRANSCEIVER) - BODY GROUND) 
    1. Disconnect the K2 front No. 3 speaker assembly connector.
    2. Disconnect the J62 DCM (telematics transceiver) connector.
    3. Measure the resistance between the front No. 3 speaker assembly or the DCM (telematics transceiver) and body ground to check for a short in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K2-2 or J62-5 (SPO+) - Body ground Always 10 kΩ or higher
      K2-1 or J62-6 (SPO-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (REAR SPEAKER ASSEMBLY OR REAR NO. 2 SPEAKER ASSEMBLY - BODY GROUND) 
    1. Disconnect the O2 and P2 rear speaker assembly connectors.
    2. Disconnect the O5 and P5 rear No. 2 speaker assembly connectors.
    3. Measure the resistance between the rear speaker assembly or the rear No. 2 speaker assembly and body ground to check for a short in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O2-1 or O5-3 (+) - Body ground Always 10 kΩ or higher
      O2-2 or O5-1 (-) - Body ground Always 10 kΩ or higher
      P2-1 or P5-3 (+) - Body ground Always 10 kΩ or higher
      P2-2 or P5-1 (-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

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

      Refer to REMOVAL [10/2015 - ]

    2. Inspect the front No. 3 speaker assembly.

      Refer to INSPECTION [10/2015 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    OK 

    See step  7

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

      Refer to REMOVAL [10/2015 - ]

    2. Inspect the front No. 2 speaker assembly.

      Refer to INSPECTION [10/2015 - ]

    3. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [12/2017 - 08/2019]

      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  8

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

      Refer to REMOVAL [10/2015 - ]

    2. Inspect the front No. 1 speaker assembly.

      Refer to INSPECTION [10/2015 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    OK 

    See step  9

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

      Refer to REMOVAL [10/2015 - ]

    2. Inspect the rear speaker assembly.

      Refer to INSPECTION [10/2015 - ]

      Result

      Result Proceed to
      OK (for 9 Speakers) A
      OK (for 12 Speakers) B
      NG C

    Result: 

    B 

    See step  11

    Result: 

    C 

    REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    A 

    See step  10

  10. INSPECT REAR NO. 2 SPEAKER ASSEMBLY 
    1. Remove the rear No. 2 speaker assembly.

      Refer to REMOVAL [10/2015 - ]

    2. Inspect the rear No. 2 speaker assembly.

      Refer to INSPECTION [10/2015 - ]

    3. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [12/2017 - 08/2019]

      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

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

    Result: 

    A 

    See step  13

    Result: 

    B 

    END 

    Result: 

    C 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [03/2018 - 08/2019] 

  11. INSPECT REAR NO. 2 SPEAKER ASSEMBLY 
    1. Remove the rear No. 2 speaker assembly.

      Refer to REMOVAL [10/2015 - ]

    2. Inspect the rear No. 2 speaker assembly.

      Refer to INSPECTION [10/2015 - ]

    3. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [12/2017 - 08/2019]

      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  12

  12. INSPECT REAR NO. 3 SPEAKER ASSEMBLY 
    1. Remove the rear No. 3 speaker assembly.

      w/o Rear No. 2 Seat: Refer to REMOVAL [08/2016 - 08/2019]

      w/ Rear No. 2 Seat: Refer to REMOVAL [03/2018 - ]

    2. Inspect the rear No. 3 speaker assembly.

      w/o Rear No. 2 Seat: Refer to INSPECTION [10/2015 - ]

      w/ Rear No. 2 Seat: Refer to INSPECTION [03/2018 - ]

      Result

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

    Result: 

    B 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    C 

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY 

    w/o Rear No. 2 Seat: Refer to REMOVAL [08/2016 - 08/2019]

    w/ Rear No. 2 Seat: Refer to REMOVAL [03/2018 - ]

    Result: 

    A 

    See step  13

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

      Refer to REMOVAL [12/2017 - 08/2019]

    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 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [12/2017 - 08/2019] 

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