Malfunction Indicator Lamp Function
WARNING: This page is about a different car, the 1995 Ford Windstar and 1995 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
Drive cycles and trips are used by OBD-II software strategy to control Malfunction Indicator Lamp (MIL) off function. MIL is illuminated whenever a DTC is stored in memory. MIL is turned off after 3 consecutive drive cycles or trips are completed, without identical fault being present. Number of drive cycles or trips, varies with each system monitor. See appropriate test in this section.