ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ Vacuum Brake Booster) HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips

*: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
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  2. CUSTOMER PROBLEM ANALYSIS


    1. Interview the customer and confirm the problem.

      Click here

      Result
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  3. CHECK DTC AND FREEZE FRAME DATA*


    1. Check and record DTCs and Freeze Frame Data.

      for DTC Check / Clear: Click here

      for Freeze Frame Data: Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
    2. Clear the DTCs and Freeze Frame Data.

      for DTC Check / Clear: Click here

      for Freeze Frame Data: Click here


      Chassis > ABS/VSC/TRC > Clear DTCs
    3. Reconfirm the DTCs.


      1. Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.

        for DTC Check / Clear: Click here

        for Freeze Frame Data: Click here


        Chassis > ABS/VSC/TRC > Trouble Codes

        Tech Tips


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

          Click here

        • If DTC U0100, U0124, U0126 and/or U0151 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).

          for C1241: Click here

          for C1417: Click here

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

    B
    C
    A
  4. DIAGNOSTIC TROUBLE CODE CHART


    1. Proceed to Diagnostic Trouble Code Chart.

      Click here

      Result
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      NEXT

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  5. SYMPTOM SIMULATION


    1. Proceed to How to Proceed with Troubleshooting.

      Click here

      Result
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      NEXT

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  6. PROBLEM SYMPTOMS TABLE


    1. Proceed to Problem Symptoms Table.

      Click here

      Result
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      NEXT

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  7. CIRCUIT INSPECTION*

    Result
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    NEXT

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  8. IDENTIFICATION OF PROBLEM

    Result
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    NEXT

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  9. REPAIR OR REPLACEMENT

    Result
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  10. RECONFIRM DTC*


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs
    2. Check if the same DTCs are output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B
    A
  11. CONFIRMATION TEST*

    Result
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    NEXT

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