INSTRUMENTS AND CONTROLS 125If the light is flashing : Amalfunction has been detected thatcould damage the emission controlsystem and increase vehicleemissions. Diagnosis and service maybe required.To help prevent damage, reducevehicle speed and avoid hardaccelerations and uphill grades.If towing a trailer, reduce the amountof cargo being hauled as soon aspossible.If the light continues to flash, find asafe place to park. Turn the vehicle offand wait at least 10 seconds beforerestarting the engine. If the light isstill flashing, follow the previousguidelines and see your dealer forservice as soon as possible.If the light is on steady : Amalfunction has been detected.Diagnosis and service may berequired.Check the following:. If fuel has been added to thevehicle using the capless fuelfunnel adapter, make sure that ithas been removed. See “Filling theTank with a Portable Gas Can”under Filling the Tank 0 241. Thediagnostic system can detect if theadapter has been left installed inthe vehicle, allowing fuel toevaporate into the atmosphere.A few driving trips with theadapter removed may turn off thelight.. Poor fuel quality can causeinefficient engine operation andpoor driveability, which may goaway once the engine is warmedup. If this occurs, change the fuelbrand. It may require at least onefull tank of the proper fuel to turnthe light off. See Fuel 0 240.If the light remains on, see yourdealer.Emissions Inspection andMaintenance ProgramsIf the vehicle requires an EmissionsInspection/Maintenance test, the testequipment will likely connect to thevehicle's Data Link Connector (DLC).The DLC is under the instrumentpanel to the left of the steering wheel.Connecting devices that are not usedto perform an Emissions Inspection/Maintenance test or to service thevehicle may affect vehicle operation.See Add-On Electrical Equipment 0 248.See your dealer if assistance is needed.The vehicle may not passinspection if:. The light is on when the engine isrunning.. The light does not come on whenthe ignition is in Service Mode.. Critical emission control systemshave not been completelydiagnosed. If this happens, thevehicle would not be ready forinspection and might requireseveral days of routine drivingbefore the system is ready forinspection. This can happen if the