Yamaha YZF690-U Owner's Manual

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Instrument and control functions3-43light remains on after adding oil,stop the engine and have a Yamahadealer check the vehicle.EAU88880Coolant temperature warninglight “ ”This warning light comes on when theengine is overheating. If this occurs,stop the engine immediately and allowthe engine to cool. (See page 6-37.)For vehicles with a radiator fan, the ra-diator fan(s) automatically switch on oroff according to the coolant tempera-ture.TIPWhen the vehicle is turned on, the lightwill come on for a few seconds, andthen go off. If the light does not comeon, or if the light remains on, have aYamaha dealer check the vehicle.NOTICEECA10022Do not continue to operate the en-gine if it is overheating.EAU91840Malfunction indicator light(MIL) “ ”This light comes on or flashes if a prob-lem is detected in the engine or othervehicle control system. If this occurs,have a Yamaha dealer check the on-board diagnostic system. The electri-cal circuit of the warning light can bechecked by turning the vehicle poweron. The light should come on for a fewseconds, and then go off. If the lightdoes not come on initially when the ve-hicle power is turned on, or if the lightremains on, have a Yamaha dealercheck the vehicle.NOTICEECA26820If the MIL starts flashing, reduce en-gine speed to prevent exhaust sys-tem damage.TIPThe engine is sensitively monitored bythe on-board diagnostic system to de-tect deterioration or malfunction of theemission control system. Therefore theMIL may come on or flash due to vehi-cle modifications, lack of maintenance,or excessive/improper use of the mo-torcycle. To prevent this, observethese precautions. Do not attempt to modify the soft-ware of the engine control unit. Do not add any electrical acces-sories that interfere with enginecontrol. Do not use aftermarket accesso-ries or parts such as suspension,spark plugs, injectors, exhaustsystem, etc. Do not change the drivetrainspecifications (chain, sprockets,wheels, tires, etc.). Do not remove or alter the O2 sen-sor, air induction system, or ex-haust parts (catalysts or EXUP,etc.). Maintain the drive chain properly. Maintain correct tire pressure. Maintain proper brake pedalheight to prevent rear brake fromdragging. Do not operate the vehicle in anextreme manner. For example, re-peated or excessive opening and