Testing Precautions
WARNING: This page is about a different car, the 1997 Mercury Grand Marquis, 1997 Ford Crown Victoria, 1996 Mercury Grand Marquis, and 1996 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
Lowest number DTC will be stored first. DTCs must be serviced in order received and cleared before continuing. If no DTCs are stored, system has passed self-test. If DTCs appear, refer to ON-BOARD SELF-TEST DIAGNOSTIC TROUBLE CODE (DTC) INDEX table under ON-BOARD SELF-TESTS.