Section 4 (Engine Controls - Self-Diagnostics - EEC-V - 6.8L (99S E Series & 99S F350 To F550)): Introduction
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 1999 Mercury Tracer, 1999 Mercury Sable, 1999 Mercury Mystique, 1999 Mercury Mountaineer, and 1999 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
Perform all basic diagnostic procedures in BASIC DIAGNOSTIC PROCEDURES article. If no fault is found while performing basic diagnostic procedures, proceed with self-diagnostics. If no diagnostic trouble codes or only pass codes are found during self-diagnostics, proceed to TROUBLE SHOOTING - NO CODES - EEC-V article for diagnosis by symptom.