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Details Of Trouble Diagnosis Flowchart

  1. COLLECT THE INFORMATION FROM THE CUSTOMER 

    It is also important to clarify customer concerns before starting the inspection. First of all, perform an interview utilizing Refer to Diagnostic Work Sheet . and reproduce the symptom as well as fully understand it. Depending on the situations, drive the vehicle with the customer and check the symptom.

    CAUTION: Customers are not professionals. Never guess easily like "maybe the customer means that...," or "maybe the customer mentions this symptom".

    GO TO 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 fail-safe mode. Refer to Fail-safe .

    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 3.

  3. PERFORM SELF-DIAGNOSIS 

    SYMBOL CONSULT

    1. Turn the ignition switch OFF to ON.
      CAUTION: Be sure wait of 10 seconds after turning ignition switch OFF or ON.
    2. Select "Self Diagnostic Result" mode of "EHS/PKB".

    Is DTC detected?

    YES

    Record or print self-diagnosis results and freeze frame data (FFD). GO TO 4.

    NO

    GO TO 6.

  4. RECHECK THE SYMPTOM 

    SYMBOL CONSULT

    1. Erase self-diagnostic result for "EHS/PKB".
    2. Turn the ignition switch OFF to ON.
      CAUTION: Be sure wait of 10 seconds after turning ignition switch OFF or ON.
    3. Perform DTC confirmation procedure for error-detected system.
      NOTE: If some DTCs are detected at the some time, determine the order for performing the diagnosis based on Refer to DTC Inspection Priority Chart .

    Is DTC detected?

    YES

    GO TO 5.

    NO

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

  5. REPAIR OR REPLACE ERROR-DETECTED PART 
    1. Repair or replace error-detected parts.
    2. Reconnect part or connector after repairing or replacing.
    3. When DTC is detected, erase self-diagnostic result for "EHS/PKB".
      CAUTION: Be sure wait of 10 seconds after turning ignition switch OFF or ON.

    GO TO 6.

  6. IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS 

    Estimate error-detected system based on symptom diagnosis and perform inspection.

    Can the error-detected system be identified?

    YES

    GO TO 7.

    NO

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

  7. FINAL CHECK 

    SYMBOL CONSULT

    1. Check the reference value for "EHS/PKB".
    2. Recheck the symptom and check that the symptom is not reproduced on the same conditions.

    Is the symptom reproduced?

    YES

    GO TO 3.

    NO

    Inspection End.

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