SEAT BELT WARNING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use this procedure to troubleshoot the seat belt warning system.

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS


    1. Interview the customer to confirm the trouble Click here.


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  3. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

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


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  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Use the GTS to check if the CAN communication system is functioning normally.


      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (for LHD) B
      CAN DTC is output (for RHD) C

      B
      C
      A
  5. CHECK NO. 1 METER ECU SUB-ASSEMBLY


    1. Check that the speedometer and shift indicator on the No. 1 meter ECU sub-assembly operate normally.

      OK
      The speedometer and shift indicator on the No. 1 meter ECU sub-assembly operate normally.

      NG
      OK
  6. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table Click here.

      Result
      Result Proceed to
      Fault is not listed in problem symptoms table A
      Fault is listed in problem symptoms table B

      B
      A
  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List / Active Test Click here.

    2. Terminals of ECU Click here.

    3. Operation Check Click here.


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  8. REPAIR OR REPLACE


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  9. CONFIRMATION TEST


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