Chapter 19 Introduction
Introduction
Normally there will already be a diagnostic routine developed in the service information for specific system faults on an automobile or truck. It is always best to follow these diagnostic routines rather than developing your own diagnostics. However, sometimes the diagnostic routine in the service information does not work, or there is no diagnostic routine for the situation you are experiencing. This chapter walks you through the steps of developing your own diagnostics for these situations. Developing a good diagnostic thought process for troubleshooting automotive electrical/mechanical problems involves three basic steps:
Once the items on the list have been reduced and prioritized, diagnosis of the concern can begin. This process may take a little time up-front before beginning diagnosis; however, it can reduce wasted time, unnecessary parts, and misdiagnosis, resulting in a satisfied customer and a good reputation. |