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Home >> Toyota >> 2021 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Seat Belt Warning System (W/ Occupant Classification System) - Diagnostics & Symptom Tests (Model Code: ZRE172)) >> SEAT BELT WARNING SYSTEM (W/ Occupant Classification System) >> Front Passenger Side Seat Belt Warning Light Malfunction [08/2013 - 04/2014] >> Procedure
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Front Passenger Side Seat Belt Warning Light Malfunction [08/2013 - 04/2014]: Procedure

WARNING: This page is about a different car, the 2018 Toyota Corolla, 2017 Toyota Corolla, 2016 Toyota Corolla, 2015 Toyota Corolla, and 2014 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2013 - ]

      Body Electrical > Occupant Detection > Clear DTCs 

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2013 - ]

      Body Electrical > Occupant Detection > Trouble Codes 

      Result

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

    Result:  2

    B 

    GO TO OCCUPANT CLASSIFICATION SYSTEM:  DIAGNOSTIC TROUBLE CODE CHART [08/2013 - 08/2016] 

    Result:  1

    A 

    See step  2

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

      Refer to DTC CHECK / CLEAR [08/2013 - ]

      Body Electrical > SRS Airbag > Clear DTCs 

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2013 - ]

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

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

    Result:  2

    B 

    GO TO AIRBAG SYSTEM:  DIAGNOSTIC TROUBLE CODE CHART [08/2013 - 04/2014] 

    Result:  1

    A 

    See step  3

  3. READ VALUE USING TECHSTREAM (OCCUPANT DETECTION) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Occupant Detection / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Occupant Detection > Data List 

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

      Body Electrical > Occupant Detection > Data List 

      Tester Display
      Passenger Buckle SW

      Result

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

    Result:  2

    B 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH. Refer to  REMOVAL [08/2013 - 04/2014] 

    Result:  3

    C 

    REPLACE OCCUPANT DETECTION ECU. Refer to  REMOVAL [08/2013 - ] 

    Result:  1

    A 

    See step  4

  4. READ VALUE USING TECHSTREAM (SRS AIRBAG) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    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
      Right side Buckle SW RH 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
      Right side Buckle SW

      Result

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

    Result:  1

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014] 

    Result:  2

    B 

    REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [08/2013 - ] 

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