How to Proceed With Trouble Diagnosis

How to Proceed With Trouble Diagnosis
1. Confirm the malfunction symptom or customer complaint.
2. Understand system description.
3. Conduct pre-inspection. Refer to "Inspection Before Diagnosis".
4. Find cause of malfunction by following the symptoms in the trouble diagnosis chart and repair or replace as necessary.
5. Does automatic light system operate normally? If it operates normally, go to 6. If it does not operate normally, go to 4.
6. End.