Mil Operation
WARNING: This page is about a different car, the 1995 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
The MIL illuminates with the ignition switch in the ON position, engine off (KOEO). If MIL does not illuminate, see MALFUNCTION INDICATOR LIGHT (MIL) INSPECTION under SELF-DIAGNOSTIC SYSTEM.