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Detailed Flow

  1. INTERVIEW FROM THE CUSTOMER

    Clarify customer complaints before inspection. First of all, perform an interview utilizing DIAGNOSTIC WORK SHEET  and reproduce symptoms to understand them fully. Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if necessary.

    CAUTION:

    Customers are not professional. Never make assumptions like "maybe the customer means that...," or "maybe the customer mentioned this symptom".

    GO TO STEP 2  .

  2. CHECK SYMPTOM

    Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by interview. Also check that the symptom is not caused by protection function. Refer to PROTECTION FUNCTION .

    CAUTION:

    When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.

    GO TO STEP 3  .

  3. CHECK VEHICLE CONDITION

    With CONSULT 

    1. Turn ignition switch ON.
    2. Check "C/U TEMP" and "C/U TEMP A" in "Data Monitor" of "EPS".
      Monitor item Values
      C/U TEMP 90°C (194°F) or less
      C/U TEMP A 90°C (194°F) or less

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Wait with the ignition switch OFF until the "Data Monitor" indication becomes 90 °C (194 °F) or less. Go to 4 after the temperature drops to 90 °C (194 °F) or less.

  4. PERFORM SELF-DIAGNOSIS

    With CONSULT 

    Perform "Self Diagnostic Result" of "EPS".

    Is any DTC detected?

    YES 

    Record or print DTC and freeze frame data (FFD). GO TO STEP 5  .

    NO 

    GO TO STEP 7  .

  5. RECHECK SYMPTOM

    With CONSULT 

    1. Erase "Self Diagnostic Result" of "EPS".
    2. Perform DTC confirmation procedures for the malfunctioning system.
    NOTE:

    If some DTCs are detected at the same time, determine the order for performing the diagnosis based on DTC INSPECTION PRIORITY CHART .

    Is any DTC detected?

    YES 

    GO TO STEP 6  .

    NO 

    Check harness and connectors based on the information obtained by interview.

  6. REPAIR OR REPLACE THE MALFUNCTIONING COMPONENTS.

    • Repair or replace the malfunctioning components.
    • Reconnect part or connector after repairing or replacing.
    • When DTC is detected, erase "Self Diagnostic Result" of "EPS".

    GO TO STEP 8  .

  7. IDENTIFY THE MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

    Estimate the malfunctioning system based on symptom diagnosis and perform inspection.

    Can the malfunctioning system be identified?

    YES 

    GO TO STEP 8  .

    NO 

    Check harness and connectors based on the information obtained by interview.

  8. FINAL CHECK

    With CONSULT 

    1. Check the reference value for power steering control module.
    2. Recheck the symptom and check that symptom is not reproduced on the same conditions.

    Is the symptom reproduced?

    YES 

    GO TO STEP   3  .

    NO 

    Inspection End.

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