1994 Cadillac Fleetwood Owner's Manual - Page 155

Malfinction Indicator Lamp (Service Engine Soon Light) SERVICE ENGINE SOON n CHECK Your vehicle could equipped with either oneof these indicators lamps. be A computer monitors operation of your fuel, ignition emission and control systems. This light shouldcome on when the ignition is on, but the engine is not running, as a check show you it is working. it does to If not come on atall, have it fixed right away.If it stays on, orit comeson while youare driving, the computer is indicating that you have aproblem. You should take your vehicle infor service soon. NOTICE: If you keep driving your vehicle with light on, after a while this the emission controls won't work as well, your fuel economy won't be as good and your engine not run as smoothly. This may could lead to costly repairs not coveredyour warranty. by 142