POWER STEERING SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
  1. Use these procedures to troubleshoot the power steering system.
  2. *: Use the intelligent tester.



1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.INSPECT AUXILIARY BATTERY VOLTAGE

      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.

    NEXT


    3.CHECK DTC AND FREEZE FRAME DATA*

      HINT:
      Refer to DTC Check / Clear (Click here).


    NEXT


    4.PROBLEM SYMPTOM CONFIRMATION

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



    		B.
    Go to step 6
    A


    5.SYMPTOM SIMULATION

      NEXT


      6.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

        HINT:
        1. If any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.
        2. If communication to the power steering ECU assembly cannot be established through the intelligent tester, inspect terminals CANH and CANL of the DLC3 and the power steering ECU assembly, and the IG circuit of the power steering ECU assembly.



      		B.
      PROCEED TO CAN COMMUNICATION SYSTEM (Click here)
      A


      7.CHECK FOR DTC*

      1. Check for DTCs (Click here).

        HINT:
        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 10
      A


      8.PROBLEM SYMPTOMS TABLE

      1. Refer to 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 10
      A


      9.OVERALL ANALYSIS AND TROUBLESHOOTING*

      1. Refer to Terminals of ECU (Click here).

      2. Refer to Data List / Active Test (Click here).


      NEXT


      10.REPAIR OR REPLACE

        NEXT


        11.CONFIRMATION TEST

          NEXT

          END