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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different car >> Section 229 (Airbag System (Mid 2023-25) - Diagnostics - Introduction) >> Airbag System >> How To Proceed With Troubleshooting [11/2022 - ] >> Procedure

How To Proceed With Troubleshooting [11/2022 - ]: Procedure

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  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 
    1. Confirm problem symptoms.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. INSPECT AUXILIARY BATTERY VOLTAGE 
    1. Measure the auxiliary battery voltage with the ignition switch off.

      Standard Voltage

      11 to 14 V

      HINT: 

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.

    2. Check the fuses and relays.
    3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK CAN COMMUNICATION SYSTEM* 
    1. Using the GTS, check if the CAN communication system is functioning normally.

      for HV Model: Refer to DIAGNOSIS SYSTEM [11/2022 - ]

      for Gasoline Model: Refer to DIAGNOSIS SYSTEM [11/2022 - 03/2023] , or refer to DIAGNOSIS SYSTEM [03/2023 - 08/2023] , or refer to DIAGNOSIS SYSTEM [08/2023 - 09/2024] , or refer to DIAGNOSIS SYSTEM [09/2024 - ]

      HINT: 

      The airbag sensor assembly is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN communication system.

      Result

      Result Proceed to
      DTC is not output A
      DTC is output B

    Result: 

    GO TO CAN COMMUNICATION SYSTEM 

    for HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2022 - ]

    for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2022 - 08/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2023 - 09/2024] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2024 - ]

    Result: 

    See step  5

  5. CHECK DTC* 
    1. Check for DTCs and freeze frame data.

      for Freeze Frame Data: Refer to FREEZE FRAME DATA [11/2022 - ] 

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result Proceed to
      Airbag system DTCs are output A
      Occupant classification system DTCs are output B
      No DTCs are output C

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2022 - ] 

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART 

    for TMC Made: Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2022 - ]

    for TMMMS Made: Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2022 - ]

    Result: 

    See step  6

  6. CHECK VEHICLE CONTROL HISTORY (RoB)* 
    1. Check for Vehicle Control History (RoB).

      Refer to VEHICLE CONTROL HISTORY (RoB) [11/2022 - ]

      Body Electrical > SRS Airbag > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      Vehicle Control History (RoB) is not output A
      Vehicle Control History (RoB) is output B

    Result: 

    GO TO PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [11/2022 - ] 

    Result: 

    GO TO VEHICLE CONTROL HISTORY (RoB) 

    Refer to VEHICLE CONTROL HISTORY (RoB) [11/2022 - ]