ANTI-LOCK BRAKE SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • The vehicle stability control system troubleshooting procedures are based on the premise that the CAN communication system is functioning normally. Check the CAN communication system first before troubleshooting the anti-lock brake system.

  • *: Use the intelligent tester.


  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

    Standard voltage
    11 to 14 V

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


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  4. CHECK DTC AND FREEZE FRAME DATA*


    1. Check and record output DTCs and the freeze frame data.

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

    3. Reconfirm the DTC.


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

        Tech Tips

        If DTC U0073, U0114 or U0124 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit Click here.

        Result
        Result Proceed to
        DTC output A
        DTC not output (Problem symptom does not occur) B
        DTC not output (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