FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

How to Perform Trouble Diagnosis For Quick and Accurate Repair

A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.

In general, each customer feels differently about a malfunction. It is important to fully understand the symptoms or conditions for a customer complaint.

INFORMATION FROM CUSTOMER

WHAT ........Vehicle model
WHEN ........Date, Frequencies
WHERE ......Road conditions
HOW ......... Operating conditions, Symptoms

PRELIMINARY CHECK
Check that the following parts are in good order.
- Battery
- Fuse
- System component-to-harness connections