SEAT BELT WARNING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these 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. Recheck for DTCs. Based on the DTCs output above, try to cause the output of the same CAN system DTC or airbag system DTC by simulating the symptoms indicated by the DTC.

      Result
      Result Proceed to
      DTC output does not reoccur A
      CAN communication system DTC output reoccurs B
      Airbag system DTC output reoccurs C

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      C

      GO TO AIRBAG SYSTEM Click here

      A

  4. PROBLEM SYMPTOMS TABLE

    Result
    Result Proceed to
    Fault is not listed in Problem Symptoms Table A
    Fault is listed in Problem Symptoms Table B

    B

    Go to step 6
    A

  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