How to Perform Trouble Diagnosis

How to Perform Trouble Diagnosis
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-229, "System Description". Description and Operation
3. Perform the Preliminary Check. Refer to LT-244, "Preliminary Check". Preliminary Check
4. Check symptom and repair or replace the cause of malfunction.
5. Does the interior room lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END