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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Video System - Diagnostic Codes (3 Of 3) & Symptom Tests (1 Of 2) >> Audio And Visual System >> DTC B1ACD-71: Rear Door Left Speaker Cable Actuator Stuck [10/2022 - ] >> Procedure

DTC B1ACD-71: Rear Door Left Speaker Cable Actuator Stuck [10/2022 - ]: Procedure

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

      Result

      Result Proceed to
      for 12 Speakers A
      for 23 Speakers B

    Result: 

    B 

    See step  18

    Result: 

    A 

    See step  2

  2. CHECK PROBLEM SYMPTOM 
    1. Confirm the problem symptoms and proceed to the respective link.

      Result

      Result Proceed to
      No sound is output from the rear speaker assembly LH and rear No. 2 speaker assembly LH A
      No sound is output from the rear speaker assembly LH B

    Result: 

    B 

    See step  13

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY LH) 

    Pre-procedure1

    1. Disconnect the L52 stereo component amplifier assembly connector.
    2. Disconnect the K24 rear No. 2 speaker assembly LH connector.

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      L52-8 (TWL+) - K24-3 (+TW) Always Below 1 Ω
      L52-23 (TWL-) - K24-1 (-TW) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. REPLACE REAR NO. 2 SPEAKER ASSEMBLY LH 
    1. Replace the rear No. 2 speaker assembly with a new or known good one.

      Refer to REMOVAL [12/2017 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. SPEAKER LINE ELECTRICITY CHECK 
    1. In accordance with the display of the GTS, perform a speaker line electricity check.

      Body Electrical > Navigation System > Utility 

      Tester Display
      Speaker Line Electricity Check

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. CHECK FOR DTC 
    1. Check for DTCs and proceed to the following step.

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC B1ACD-71 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (REAR NO. 2 SPEAKER ASSEMBLY LH - REAR SPEAKER ASSEMBLY LH) 

    Pre-procedure1

    1. Disconnect the K24 rear No. 2 speaker assembly LH connector.
    2. Disconnect the K25 rear speaker assembly LH connector.

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K24-4 (+) - K25-2 (+) Always Below 1 Ω
      K24-2 (-) - K25-1 (-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. INSPECT REAR SPEAKER ASSEMBLY LH 

    Refer to INSPECTION [12/2017 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE REAR SPEAKER ASSEMBLY LH. Refer to  INSPECTION [12/2017 - ] 

    Result: 

    OK 

    See step  10

  10. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  11

  11. SPEAKER LINE ELECTRICITY CHECK 
    1. In accordance with the display of the GTS, perform a speaker line electricity check.

      Body Electrical > Navigation System > Utility 

      Tester Display
      Speaker Line Electricity Check

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  12. CHECK FOR DTC 
    1. Check for DTCs and proceed to the following step.

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC B1ACD-71 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

  13. CHECK HARNESS AND CONNECTOR (REAR NO. 2 SPEAKER ASSEMBLY LH - REAR SPEAKER ASSEMBLY LH) 

    Pre-procedure1

    1. Disconnect the K24 rear No. 2 speaker assembly LH connector.
    2. Disconnect the K25 rear speaker assembly LH connector.

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K24-4 (+) - K25-2 (+) Always Below 1 Ω
      K24-2 (-) - K25-1 (-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  14

  14. INSPECT REAR SPEAKER ASSEMBLY LH 

    Refer to INSPECTION [12/2017 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE REAR SPEAKER ASSEMBLY LH. Refer to  INSPECTION [12/2017 - ] 

    Result: 

    OK 

    See step  15

  15. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  16

  16. SPEAKER LINE ELECTRICITY CHECK 
    1. In accordance with the display of the GTS, perform a speaker line electricity check.

      Body Electrical > Navigation System > Utility 

      Tester Display
      Speaker Line Electricity Check

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  17

  17. CHECK FOR DTC 
    1. Check for DTCs and proceed to the following step.

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC B1ACD-71 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE REAR SPEAKER ASSEMBLY LH. Refer to  INSPECTION [12/2017 - ] 

  18. CHECK PROBLEM SYMPTOM 
    1. Confirm the problem symptoms and proceed to the respective link.

      Result

      Result Proceed to
      No sound is output from the rear speaker assembly LH and rear No. 2 speaker assembly LH A
      No sound is output from the rear speaker assembly LH B

    Result: 

    B 

    See step  23

    Result: 

    A 

    See step  19

  19. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY LH) 

    Pre-procedure1

    1. Disconnect the L52 stereo component amplifier assembly connector.
    2. Disconnect the K23 rear No. 2 speaker assembly LH connector.

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      L52-8 (TWL+) - K23-2 (+) Always Below 1 Ω
      L52-23 (TWL-) - K23-1 (-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  20

  20. REPLACE REAR NO. 2 SPEAKER ASSEMBLY LH 
    1. Replace the rear No. 2 speaker assembly with a new or known good one.

      Refer to REMOVAL [12/2017 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  21

  21. SPEAKER LINE ELECTRICITY CHECK 
    1. In accordance with the display of the GTS, perform a speaker line electricity check.

      Body Electrical > Navigation System > Utility 

      Tester Display
      Speaker Line Electricity Check

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  22

  22. CHECK FOR DTC 
    1. Check for DTCs and proceed to the following step.

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC B1ACD-71 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

  23. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY LH) 

    Pre-procedure1

    1. Disconnect the L52 stereo component amplifier assembly connector.
    2. Disconnect the K25 rear speaker assembly LH connector.

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      L52-14 (RL+) - K25-2 (+) Always Below 1 Ω
      L52-29 (RL-) - K25-1 (-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  24

  24. INSPECT REAR SPEAKER ASSEMBLY LH 

    Refer to INSPECTION [12/2017 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE REAR SPEAKER ASSEMBLY LH. Refer to  INSPECTION [12/2017 - ] 

    Result: 

    OK 

    See step  25

  25. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  26

  26. SPEAKER LINE ELECTRICITY CHECK 
    1. In accordance with the display of the GTS, perform a speaker line electricity check.

      Body Electrical > Navigation System > Utility 

      Tester Display
      Speaker Line Electricity Check

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  27

  27. CHECK FOR DTC 
    1. Check for DTCs and proceed to the following step.

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC B1ACD-71 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

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