POWER STEERING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips

*: Use the intelligent tester.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    1. Confirm problem symptoms.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  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.

    2. Using the intelligent tester, inspect battery voltage reduction history "Battery Voltage Lo Record" in the Data List

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK DTC AND FREEZE FRAME DATA*


    1. Check and record DTCs and freeze frame data.

      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTC AND FREEZE FRAME DATA*


    1. Clear the DTCs and freeze frame data.

      Result
      Proceed to
      NEXT

    NEXT

  6. PROBLEM SYMPTOM CONFIRMATION

    Result
    Result Proceed to
    Symptom does not occur. A
    Symptom occurs. B

    B

    GO TO STEP 8 Click here

    A

  7. SYMPTOM SIMULATION


    1. Perform symptom simulation.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. CHECK CAN COMMUNICATION SYSTEM*


    1. Check for DTCs.

      Click here

      Result
      Result Proceed to
      CAN communication system DTC is not output. A
      CAN communication system DTC is output. B

      Tech Tips


      • If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.

      • If communication to the power steering ECU cannot be established through the intelligent tester, inspect terminals CANH and CANL of the DLC3 and power steering ECU, and the IG circuit of the power steering ECU.


    B

    PROCEED TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    A

  9. CHECK FOR DTC*


    1. Check for DTCs.

      Click here

      Tech Tips

      Refer to Diagnostic Trouble Code Chart when any DTCs are output.

      Click here

      Result
      Result Proceed to
      DTC is not output. A
      DTC is output. B

    B

    GO TO STEP 11 Click here

    A

  10. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  11. CIRCUIT INSPECTION

    Result
    Proceed to
    NEXT

    NEXT

  12. IDENTIFICATION OF PROBLEM

    Result
    Proceed to
    NEXT

    NEXT

  13. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  14. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END