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Detailed Flow

WARNING: This page is about a different variant/trim than selected.
  1. GET INFORMATION FOR SYMPTOM 
    1. Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the "Diagnostic Work Sheet". (Refer to Diagnostic Work Sheet .)
    2. Ask if the customer requests I/M examination.

    Malfunction information, obtained

    GO TO 2.

    NO

    GO TO 13.

  2. CHECK DTC 

    SYMBOL With CONSULT

    1. Check DTC.
    2. Perform the following procedure if DTC is displayed.
      • Record DTC and freeze frame data. (Print them out with CONSULT or GST.)
      • Erase only DTC of "ENGINE".

        "How to Erase DTC and 1st Trip DTC" in Refer to CONSULT Function .

      • Study the relationship between the cause detected by DTC and the symptom described by the customer. (Symptom Matrix Chart is useful. Refer to Symptom Table .)
    3. Check related service bulletins for information.

    Are any symptoms described and any DTCs detected?

    Symptom is described, DTC is detected

    GO TO 3.

    Symptom is described, DTC is not detected

    GO TO 4.

    Symptom is not described, DTC is detected

    GO TO 5.

  3. CONFIRM THE SYMPTOM 

    Try to confirm the symptom described by the customer (except MIL ON).

    Also study the normal operation and fail-safe related to the symptom. Refer to Symptom Description . and Refer to Fail-safe 

    Diagnosis Work Sheet is useful to verify the incident.

    Verify relation between the symptom and the condition when the symptom is detected.

    GO TO 5.

  4. CONFIRM THE SYMPTOM 

    Try to confirm the symptom described by the customer.

    Also study the normal operation and fail-safe related to the symptom. Refer to Symptom Description . and Refer to Fail-safe .

    Diagnosis Work Sheet is useful to verify the incident.

    Verify relation between the symptom and the condition when the symptom is detected.

    GO TO 6.

  5. PERFORM DTC CONFIRMATION PROCEDURE 

    Perform DTC CONFIRMATION PROCEDURE for the displayed DTC, and then check that DTC is detected again.

    If two or more DTCs are detected, Refer to DTC Inspection Priority Chart . and determine trouble diagnosis order.

    NOTE:
    • Freeze frame data is useful if the DTC is not detected.
    • Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service information. This simplified check procedure is an effective alternative though DTC cannot be detected during this check.

      If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIRMATION PROCEDURE.

    Is DTC detected?

    YES

    GO TO 10.

    NO

    Check according to Refer to Inspection .

  6. PERFORM BASIC INSPECTION 

    Perform Refer to Work Procedure .

    Do you have CONSULT?

    YES

    GO TO 7.

    NO

    GO TO 9.

  7. PERFORM SPEC IN DATA MONITOR MODE 

    SYMBOL With CONSULT

    Check that "MASS AIR FLOW SENSOR (Hz)", "B/FUEL SCHDL", "A/F ALPHA-B1" and "A/F ALPHA-B2" are within the SP value using "SPEC" in "DATA MONITOR" mode with CONSULT. Refer to Component Function Check .

    Is the measurement value within the SP value?

    YES

    GO TO 9.

    NO

    GO TO 8.

  8. DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE 

    Detect malfunctioning part according to diagnosis procedure. Refer to Diagnosis Procedure .

    Is a malfunctioning part detected?

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