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Home >> Toyota >> 2023 >> Corolla LE >> Repair and Diagnosis >> Restraints >> Seat Belts >> Seat Belt Warning System (Early 2023, Except TMC) - Diagnostics & Symptom Tests >> SEAT BELT WARNING SYSTEM (except TMC Made) >> Driver Side Seat Belt Warning Light does not Operate [09/2022 - 11/2022] >> Procedure

Driver Side Seat Belt Warning Light does not Operate [09/2022 - 11/2022]: Procedure

  1. CHECK DTC OUTPUT (AIRBAG SYSTEM) 
    1. Clear the DTCs.

      Body Electrical > SRS Airbag > Clear DTCs 

    2. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO AIRBAG SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2022 - 11/2022] 

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / SRS Airbag / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > SRS Airbag > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Left side Buckle SW LH buckle switch Unset, Set or NG Unset: Seat belt not fastened
      Set: Seat belt fastened
      NG: Data is not determined
      -

      Body Electrical > SRS Airbag > Data List 

      Tester Display
      Left side Buckle SW

      Result

      Result Proceed to
      Unset or Set is displayed on the Techstream according to the driver seat belt condition A
      Unset or Set is not displayed correctly on the Techstream according to the driver seat belt condition B
      NG is displayed on the Techstream C

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    B 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH. Refer to  REMOVAL [09/2022 - 11/2022] 

    Result: 

    C 

    REPLACE AIR BAG SENSOR ASSEMBLY. Refer to  REMOVAL [09/2022 - 11/2022]