POWER STEERING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Perform troubleshooting according to the following flowchart.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. CHECK DTC AND FREEZE FRAME DATA*


    1. Record DTCs and freeze frame data.


      NEXT

  3. CLEAR DTC AND FREEZE FRAME DATA*


    NEXT

  4. PROBLEM SYMPTOM CONFIRMATION

    Result
    Result Proceed to
    Problem symptoms does not occur. A
    Problem symptoms occurs. B

    B

    Go to step 6
    A

  5. SYMPTOM SIMULATION


    NEXT

  6. CHECK DTC*


    1. Recheck for DTCs Click here.

      Result
      Result Proceed to
      Normal system code is output. A
      DTC is output. 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.

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


      B

      Go to step 8
      A

  7. PROBLEM SYMPTOMS TABLE


    NEXT

  8. CIRCUIT INSPECTION


    NEXT

  9. IDENTIFICATION OF PROBLEM*


    NEXT

  10. REPAIR OR REPLACE


    NEXT

  11. CONFIRMATION TEST


    NEXT
    END