POWER STEERING SYSTEM (w/ VSC) HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    1. Confirm problem symptoms Click here.


      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.


      NEXT

  4. CHECK DTC*


    1. Check and record DTCs.


      NEXT

  5. CLEAR DTC*


    1. Clear the DTCs.


      NEXT

  6. PROBLEM SYMPTOM CONFIRMATION

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

    B

    Go to step 8
    A

  7. SYMPTOM SIMULATION


    1. Perform symptom simulation Click here.


      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.


        • for LHD with Entry and Start System:

        • Refer to the following procedures Click here.


        • for LHD without Entry and Start System:

        • Refer to the following procedures Click here.


        • for RHD with Entry and Start System:

        • Refer to the following procedures Click here.


        • for RHD without Entry and Start System:

        • Refer to the following procedures Click here.

      • If communication with 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)
      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
      A

  10. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table Click here.


      NEXT

  11. CIRCUIT INSPECTION


    NEXT

  12. IDENTIFICATION OF PROBLEM


    NEXT

  13. REPAIR OR REPLACE


    NEXT

  14. CONFIRMATION TEST


    NEXT
    END