POWER STEERING SYSTEM (for Sedan) > HOW TO PROCEED WITH TROUBLESHOOTING


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


1.VEHICLE BROUGHT TO WORKSHOP

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    2.INSPECT BATTERY VOLTAGE

      Standard voltage:
      11 to 14 V
      If the voltage is below 11 V, recharge or replace the battery before proceeding.

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    3.CHECK DTC AND FREEZE FRAME DATA*

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      4.PROBLEM SYMPTOM CONFIRMATION

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        5.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

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


        B.
        PROCEED TO CAN COMMUNICATION SYSTEM
        A


        6.CHECK DTC*
        1. Check for DTCs (Click here).

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


        A.
        Go to step 9
        B


        7.PROBLEM SYMPTOMS TABLE
        1. Refer to Problem Symptoms Table (Click here).

        2. 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.OVERALL ANALYSIS AND TROUBLESHOOTING*
        1. Terminals of ECU (Click here).

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


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        9.REPAIR OR REPLACE

          NEXT


          10.CONFIRMATION TEST

            NEXT

            END