Power Steering System (For 2Az-Fe) How To Proceed With Troubleshooting

Steering. Corolla. Zre142 Aze141
Power Assist Systems. Corolla. Zre142 Aze141

  1. VEHICLE BROUGHT TO WORKSHOP

  2. INSPECT BATTERY VOLTAGE

  3. CHECK DTC AND FREEZE FRAME DATA*

  4. PROBLEM SYMPTOM CONFIRMATION

  5. SYMPTOM SIMULATION

  6. CHECK CAN COMMUNICATION SYSTEM*

  7. CHECK FOR DTC*

  8. PROBLEM SYMPTOMS TABLE

  9. OVERALL ANALYSIS AND TROUBLESHOOTING*

  10. REPAIR OR REPLACE

  11. CONFIRMATION TEST

Power Steering System (For 2Az-Fe) -- 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*
      HINT:
      Refer to Clear DTCs (Link).

    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 (COROLLA_ZRE142 RM000000WI60ACX.html).

        Result:
        Result
        		Proceed to
        CAN system DTC is not output
        		A
        CAN 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 cannot be established through the Techstream, 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 (COROLLA_ZRE142 RM000000WI60ACX.html)
      A


      7.CHECK FOR DTC*

      1. Check for DTCs (COROLLA_ZRE142 RM00000275005OX.html).

        HINT:
        Refer to Diagnostic Trouble Code Chart when any DTCs are output (COROLLA_ZRE142 RM00000274U04UX.html).
        Result:
        Result
        		Proceed to
        DTC is not output
        		A
        DTC is output
        		B


      		B.
      Go to step 9
      A


      8.PROBLEM SYMPTOMS TABLE

      1. Refer to Problem Symptoms Table (COROLLA_ZRE142 RM00000274X053X.html).

        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


      9.OVERALL ANALYSIS AND TROUBLESHOOTING*

      1. Refer to Terminals of ECU (COROLLA_ZRE142 RM00000274W03BX.html).

      2. Refer to Data List / Active Test (COROLLA_ZRE142 RM000002752043X.html).


      NEXT


      10.REPAIR OR REPLACE

        NEXT


        11.CONFIRMATION TEST

          NEXT

          END