POWER STEERING SYSTEM (for 2AR-FSE) HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    1. Confirm the problem symptoms Click here.


      NEXT

  3. INSPECT AUXILIARY BATTERY VOLTAGE*


    1. Measure the voltage of the auxiliary battery.

      Standard voltage
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

    2. Using the GTS, inspect auxiliary battery voltage reduction history "Battery Control Count (Body ECU)" in the Data List Click here.


      NEXT

  4. CHECK DTC AND FREEZE FRAME DATA*


    1. Check and record DTCs and freeze frame data.


      NEXT

  5. CLEAR DTC AND FREEZE FRAME DATA*


    1. Clear the DTCs and freeze frame data.


      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 for LHD, Click here for RHD).

      Result
      Result Proceed to
      CAN communication system DTC is not output A
      CAN communication system DTC is output for LHD B
      for RHD C

      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 assembly cannot be established through the GTS, inspect terminals CANH and CANL of the DLC3 and power steering ECU assembly and the IG circuit of the power steering ECU assembly.


      B

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

      C

      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
      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