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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (W/ Advanced Park) - Diagnostic Codes (5 Of 6) >> AIRBAG SYSTEM (w/ Advanced Park) >> DTC B009B-83: Left Side Restraints Sensor 5 Value of Signal Protection Calculation Incorrect [11/2021 - 10/2023] >> Procedure

DTC B009B-83: Left Side Restraints Sensor 5 Value of Signal Protection Calculation Incorrect [11/2021 - 10/2023]: Procedure

  1. CHECK DTC 

    Pre-procedure1

    1. Turn the power switch on (IG), and wait for at least 60 seconds.

      Procedure1

    2. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result  Proceed to
      B009B-83 is output A
      B009B-83 is not output B

      Post-procedure1

    3. None

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023] 

    Result: 

    See step  2

  2. CHECK CONNECTION OF CONNECTORS 

    Pre-procedure1

    1. Turn the power switch off.
    2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

      Procedure1

    3. Check that the connectors are properly connected to the door side airbag sensor LH and rear airbag sensor LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  3

  3. CHECK DOOR SIDE AIRBAG SENSOR LH 
    1. Interchange the door side airbag sensor LH with RH and connect the connectors.
      GTY1006161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Door Side Airbag Sensor RH
      *3 Wire Harness
    2. Connect the cable to the negative (-) auxiliary battery terminal.
    3. Turn the power switch on (IG), and wait for at least 60 seconds.
    4. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK DOOR SIDE AIRBAG SENSOR LH 

    Pre-procedure1

    1. Turn the power switch off.
    2. Turn the power switch on (IG), and wait for at least 60 seconds.

      Procedure1

    3. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result  Proceed to
      B009B-83 is output A
      B009E-83 is output B

      Post-procedure1

    4. Turn the power switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
    6. Return the door side airbag sensor RH and LH to their original positions and connect the connectors.

    Result: 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

    Result: 

    REPLACE DOOR SIDE AIRBAG SENSOR LH. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]