Power Steering System (For Sedan) How To Proceed With Troubleshooting

Steering. Yaris. Ncp93, 131
Power Assist Systems. Yaris. Ncp93, 131

  1. VEHICLE BROUGHT TO WORKSHOP

  2. INSPECT BATTERY VOLTAGE

  3. CHECK DTC AND FREEZE FRAME DATA*

  4. PROBLEM SYMPTOM CONFIRMATION

  5. CHECK CAN COMMUNICATION SYSTEM*

  6. CHECK DTC*

  7. PROBLEM SYMPTOMS TABLE

  8. OVERALL ANALYSIS AND TROUBLESHOOTING*

  9. REPAIR OR REPLACE

  10. CONFIRMATION TEST

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

    NEXT


    2.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.CHECK DTC AND FREEZE FRAME DATA*

      NEXT


      4.PROBLEM SYMPTOM CONFIRMATION

        NEXT


        5.CHECK CAN COMMUNICATION SYSTEM*

        1. Check for DTCs (YARIS_NCP93 RM000001D3E00OX.html).

          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 (YARIS_NCP93 RM000001AL601EX.html).

          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 (YARIS_NCP93 RM000001AKG01QX.html).

          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 (YARIS_NCP93 RM000001AKF01VX.html).

        2. Data List/Active Test (YARIS_NCP93 RM000001AL801VX.html).


        NEXT


        9.REPAIR OR REPLACE

          NEXT


          10.CONFIRMATION TEST

            NEXT

            END