LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Video System - Diagnostic Codes (2 Of 3) >> Audio And Visual System >> DTC B1ACB-71: Front Left Speaker Cable Actuator Stuck [10/2022 - ] >> Procedure

DTC B1ACB-71: Front Left Speaker Cable Actuator Stuck [10/2022 - ]: Procedure

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

      Result

      Result Proceed to
      No sound is output from the front No. 1 speaker assembly LH A
      No sound is output from the front No. 2 speaker assembly LH B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY LH) 

    Pre-procedure1

    1. Disconnect the L52 stereo component amplifier assembly connector.
    2. Disconnect the H19 front No. 1 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
      L52-4 (WFL+) - H19-2 (+) Always Below 1 Ω
      L52-19 (WFL-) - H19-1 (-) 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  3

  3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY LH 

    Refer to INSPECTION [12/2017 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY LH. Refer to  REMOVAL [12/2017 - ] 

    Result: 

    OK 

    See step  4

  4. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. 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  6

  6. 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 B1ACB-71 is output B

    Result: 

    A 

    END 

    Result: 

    B 

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

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

    Pre-procedure1

    1. Disconnect the L52 stereo component amplifier assembly connector.
    2. Disconnect the G70 front 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
      L52-12 (FL+) - G70-2 (+) Always Below 1 Ω
      L52-27 (FL-) - G70-1 (-) 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  8

  8. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY LH 

    Refer to REMOVAL [12/2017 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY LH. Refer to  REMOVAL [12/2017 - ] 

    Result: 

    OK 

    See step  9

  9. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. 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  11

  11. 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 B1ACB-71 is output B

    Result: 

    A 

    END 

    Result: 

    B 

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

scientia non olet · About LEMON Manuals