POWER STEERING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use these procedures to troubleshoot the power steering system.

  • *: Use the intelligent tester.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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

    Result
    Proceed to
    NEXT

    NEXT

  3. INSPECT ELECTRIC POWER CONTROL SYSTEM*


    1. Using the intelligent tester, check the electric power control system's load control history.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK DTC AND FREEZE FRAME DATA*


    1. Record DTCs and freeze frame data.

      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTC 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

    Result
    Proceed to
    NEXT

    NEXT

  8. CHECK DTC*


    1. Check for DTCs.

      Click here

    2. Delete DTCs.

    3. Recheck for DTCs.

      Result
      Result Proceed to
      DTC does not reoccur A
      DTC reoccurs B

      Tech Tips


      • Refer to the diagnostic trouble code chart if any DTCs are output.

      • If any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first (Click here (for LHD) and Click here (for RHD)).

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


    B

    GO TO STEP 10 Click here

    A

  9. PROBLEM SYMPTOMS TABLE

    Result
    Proceed to
    NEXT

    NEXT

  10. CIRCUIT INSPECTION

    Result
    Proceed to
    NEXT

    NEXT

  11. IDENTIFICATION OF PROBLEM

    Result
    Proceed to
    NEXT

    NEXT

  12. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  13. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END