Six-Step Troubleshooting Procedure
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
Diagnosis of the powertrain control module (PCM) is done in six basic steps:
- verification of complaint
- verification of any related symptoms
- symptom analysis
- problem isolation
- repair of isolated problem
- verification of proper operation