Click here

POWER STEERING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Click here
Click here
Tip:

Perform troubleshooting in accordance with the following flowchart.

*: Use the intelligent tester.


  1. Click here

    VEHICLE BROUGHT TO WORKSHOP


    • NEXT
  2. Click here

    INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


    • NEXT
  3. Click here

    CHECK DTC AND FREEZE FRAME DATA*


    • NEXT
  4. Click here

    PROBLEM SYMPTOM CONFIRMATION


    • NEXT
  5. Click here

    CHECK CAN COMMUNICATION SYSTEM*


    1. Check for DTCs (Click here).

      Result
      Result Proceed to
      CAN system DTC is not output A
      CAN system DTC is output B
      Tip:

      • When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.

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


      • B
      • GO TO CAN COMMUNICATION SYSTEM (See pageClick here)
      • A
  6. Click here

    CHECK DTC*


    1. Check for DTCs (Click here).

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

      • B
      • Go to step 9
      • A
  7. Click here

    PROBLEM SYMPTOMS TABLE


    1. Problem Symptoms Table (Click here).

      Result
      Result Proceed to
      Fault is not listed in problem symptoms table A
      Fault is listed in problem symptoms table B

      • B
      • Go to step 9
      • A
  8. Click here

    OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. TERMINALS OF ECU (Click here).

    2. DATA LIST / ACTIVE TEST (Click here).


      • NEXT
  9. Click here

    REPAIR OR REPLACE


    • NEXT
  10. Click here

    CONFIRMATION TEST


    • NEXT
    • END