Diagnosis and Repair Workflow

Diagnosis and Repair Workflow

Overall Sequence





Detailed Flow

1. INTERVIEW FOR MALFUNCTION

Find out what the customer's concerns are.


GO TO 2.

2. SYMPTOM CHECK

Verify the symptom from the customer's information.


GO TO 3.

3. BASIC INSPECTION

Check the operation of each part. Check that any concerns occur other than those mentioned in the customer interview.


GO TO 4.

4. DTC CHECK WITH SDT

Perform the "DTC check" with SDT. Check that any DTC is detected.

Is any DTC detected?
YES
GO TO 5.
NO
GO TO 6.

5. TROUBLE DIAGNOSIS BY DTC

Perform the trouble diagnosis for the detected DTC. Specify the malfunctioning part.


GO TO 9.

6. FAIL-SAFE ACTIVATION CHECK

Determine if the customer's concern is related to fail-safe activation.

Does the fail-safe activate?
YES
GO TO 7.
NO
GO TO 8.

7. SYSTEM DIAGNOSIS

Perform the system diagnosis for the system in which the fail-safe activates. Specify the malfunctioning part.


GO TO 9.

8. SYMPTOM DIAGNOSIS

Perform the symptom diagnosis. Specify the malfunctioning part.


GO TO 9.

9. MALFUNCTION PART REPAIR

Repair or replace the malfunctioning part.


GO TO 10.

10. REPAIR CHECK (DTC CHECK WITH SDT)

Perform the "DTC check" with SDT. Verify that no DTCs are detected. Erase all DTCs detected prior to the repair. Verify that DTC is not detected again.

Is any DTC detected?
YES
GO TO 5.
NO
GO TO 11.

11. REPAIR CHECK (OPERATION CHECK)

Check the operation of each part.

Does it operate normally?
YES
Inspection End.
NO
GO TO 3.