Diagnostic Strategy

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

Troubleshooting an electronically controlled automatic transaxle is simplified by using the proven method of diagnosis. One of the most important things to remember is that there is a definite procedure to follow.

NOTE: Do not take shortcuts or assume that critical checks or adjustments have already been made.

Follow the procedures as written to avoid missing critical components or steps.

To correctly diagnose a concern, have the following publications available:

INTRODUCTION - GASOLINE article
Technical Service Bulletins (TSBs)
Wiring Diagram

These publications provide the information required when diagnosing transaxle concerns.

Use DIAGNOSTIC FLOW TABLE as a guide and follow the steps as indicated.