SEAT BELT WARNING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use the following procedures to troubleshoot the seat belt warning system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


    NEXT

  3. CHECK FOR DTC*


    1. Check for DTCs and make a note of any codes that are output.

    2. Clear the DTCs.

    3. Based on the DTCs output above, try to cause output of the same CAN communication system DTC by reproducing the symptoms indicated by the DTC. Then recheck for DTCs.

      Result
      Result Proceed to
      DTC is not output A
      CAN communication system DTC is output B

      B

      Go to CAN COMMUNICATION SYSTEM Click here

      A

  4. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table Click here.


      NEXT

  5. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Operation Check Click here.

    2. Data List / Active Test Click here.

    3. Terminals of ECU Click here.


      NEXT

  6. REPAIR OR REPLACE


    NEXT

  7. CONFIRMATION TEST


    NEXT
    END