Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Mountaineer, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Enter this test only when all steps under QUICK TEST have been successfully completed and engine still does not start or if directed here from another test or chart. This test is only intended to diagnose:
- Powertrain Control Module (PCM)
- Spark (EEC-Controlled)
To prevent replacement of good components, be aware the following non-EEC related areas and components may be cause of concern:
- Fuel Quality & Quantity
- Ignition (General Condition)
- Engine Mechanical Components
- Starter & Battery Circuits