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Home >> Toyota >> 2021 >> 4Runner Limited, RWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (B100-B1690) >> Airbag System >> DTC B1000: Airbag ECU Malfunction [08/2019 - ] >> Procedure

DTC B1000: Airbag ECU Malfunction [08/2019 - ]: Procedure

  1. CHECK DTC 
    1. Check for DTCs (Refer to DTC CHECK / CLEAR [08/2019 - ] ).
      RESULT

      Result Proceed to
      DTC B1000 is output A
      DTC B1000 and other DTCs are output B
      NOTE:

      If only DTC B1000 is output, do not clear the DTCs, replace the airbag sensor assembly.

      HINT: 

      If any DTCs other than DTC B1000 are also output, troubleshoot those DTCs first.

    Result: 

    A 

    REPLACE AIRBAG SENSOR ASSEMBLY 

    (Refer to REMOVAL [08/2015 - ] )

    Result: 

    B 

    GO TO DIAGNOSTIC TROUBLE CODE CHART 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ] )