VEHICLE STABILITY CONTROL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS


    1. Interview the customer and confirm the trouble.


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  3. INSPECT BATTERY VOLTAGE


    1. Measure the voltage of the battery.

      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 DTC AND FREEZE FRAME DATA*


    1. Check and record the DTCs and Freeze Frame Data Click here for DTC Check/Clear, and Click here for Freeze Frame Data).

    2. Clear the DTCs and Freeze Frame Data Click here for DTC Check/Clear, and Click here for Freeze Frame Data).

    3. Reconfirm the DTCs.


      1. Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data Click here for DTC Check/Clear, and Click here for Freeze Frame Data).

        Tech Tips


        • When CAN communication system DTCs are output, repair the CAN communication system first Click here.

        • If DTC U0100, U0123 and/or U0126 are among the CAN communication DTCs that are output, first use the Data List to check for a momentary open circuit Click here.

        • If the GTS cannot communicate with the skid control ECU (brake actuator assembly), inspect the CAN communication system Click here.

        • If there is no response from the skid control ECU (brake actuator assembly), inspect the +BS circuit of the skid control ECU (brake actuator assembly) Click here.

        Result
        Result Proceed to
        DTCs are output. A
        DTCs are not output. Problem symptom does not occur. B
        Problem symptom occurs. C

      B

      GO TO STEP 6
      C

      GO TO STEP 7
      A

  5. DIAGNOSTIC TROUBLE CODE CHART


    1. Proceed to Diagnostic Trouble Code Chart Click here.


      NEXT
      GO TO STEP 8

  6. SYMPTOM SIMULATION


    1. Proceed to Check for Intermittent Problems Click here.


      NEXT

  7. PROBLEM SYMPTOMS TABLE


    1. Proceed to Problem Symptoms Table Click here.


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  8. CIRCUIT INSPECTION


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  9. IDENTIFICATION OF PROBLEM


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  10. REPAIR OR REPLACEMENT


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  11. CONFIRMATION TEST*


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    END