Section 1 (Engine Controls - Tests W/Codes - EEC-IV): Introduction
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 1993 Mercury Tracer, 1993 Mercury Topaz, 1993 Mercury Sable, 1993 Mercury Grand Marquis, and 1993 Mercury Cougar. However, it is still accessible from the selected car via links, so may be relevant.
Perform all steps in BASIC TESTING article in this section. If no fault is found while performing BASIC TESTING , proceed with self diagnostics. If no service code or only pass codes are found during self-diagnostics, proceed to TESTS W/O CODES article in this section for diagnosis by symptoms.