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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (W/O Advanced Park) - Diagnostic Codes (1 Of 3) >> AIRBAG SYSTEM (w/o Advanced Park) >> DTC B1160: Airbag ECU Malfunction1; DTC B1161: Airbag ECU Malfunction2; DTC B1162: Airbag ECU Malfunction3; DTC B1163: Airbag ECU Malfunction4; DTC B1164: Airbag ECU Malfunction5; DTC B1165: Airbag ECU Malfunction6; DTC B1166: Airbag ECU Malfunction7; DTC B1167: Airbag ECU Malfunction8 [10/2020 - 10/2023] >> Procedure

DTC B1160: Airbag ECU Malfunction1; DTC B1161: Airbag ECU Malfunction2; DTC B1162: Airbag ECU Malfunction3; DTC B1163: Airbag ECU Malfunction4; DTC B1164: Airbag ECU Malfunction5; DTC B1165: Airbag ECU Malfunction6; DTC B1166: Airbag ECU Malfunction7; DTC B1167: Airbag ECU Malfunction8 [10/2020 - 10/2023]: Procedure

  1. CHECK DTC 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [10/2020 - 10/2023]

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result Proceed to
      DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167 is output A
      DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166, B1167 and other DTCs are output B
      NOTE:

      If only DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167 is output, do not clear the DTCs. Replace the airbag ECU assembly.

      HINT: 

      If any DTCs other than DTC DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 and B1167 are also output, troubleshoot those DTCs first.

    Result: 

    A 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [10/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

    Result: 

    B 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2020 - 11/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 10/2023]