Operator's Manual

Figure25
1.Hightemperatureshutdown—theenginetemperaturehas
exceededsafelevelsandtheenginehasbeenshutdown.
Checkthecoolingsystem.
2.Hightemperaturewarning—theenginetemperatureis
approachingunsafelevelsandthemowerdeckhasbeen
shutdown.Checkthecoolingsystem.
3.Operatorisintheseat
4.ThePTOisOn
5.Theparkingbrakeisnotengaged
6.ControlsareinNeutral
7.TheSCMisreceivingpowerandisoperational
UnderstandingtheDiagnostic
Light
(4WheelDriveonly)
Themachineisequippedwithadiagnosticlight
whichindicatesiftheelectroniccontrollersensesan
electronicmalfunction.Thediagnosticlightislocated
onthecontrolpanel(
Figure26).Whentheelectronic
controllerisfunctioningcorrectlyandthekeyswitchis
movedtotheOnposition,thecontrollerdiagnostic
lightwillturnONfor3secondsandturnOFFto
indicatethelightisworkingproperly.Ifthemachine
killsthelightwillturnonsteadyuntilthekeyposition
ischanged.Thelightwillblinkifthecontrollerdetects
amalfunctionintheelectricalsystem.Thelightwill
stopblinkingandautomaticallyresetwhenthekey
switchisturnedtotheOffpositiononcethefaulthas
beenresolved.
Figure26
1.Diagnosticlight
Whenthecontrollerdiagnosticlightblinks,oneofthe
followingproblemshasbeendetectedbythecontroller:
•Oneoftheoutputshasbeenshorted.
•Oneoftheoutputsisopencircuited.
Usingthediagnosticdisplay,determinewhichoutput
ismalfunctioning;refertoCheckingtheInterlock
Switches.
Ifthediagnosticlightisnotilluminatedwhenthekey
switchisintheOnposition,thisindicatesthatthe
electroniccontrollerisnotoperating.Possiblecauses
areasfollows:
•Loop-backisnotconnected.
•Thelightisburnedout.
•Fusesareblown.
•Itisnotfunctioningcorrectly.
Checktheelectricalconnections,inputfuses,and
diagnosticlightbulbtodeterminethemalfunction.
Ensurethattheloop-backconnectorissecuredtothe
wireharnessconnector.
DiagnosticAceDisplay
4WheelDriveonly
Themachineisequippedwithanelectroniccontroller
whichcontrolsmostmachinefunctions.Thecontroller
determineswhatfunctionisrequiredforvariousinput
switches(i.e.seatswitch,keyswitch,etc.)andturns
ontheoutputstoactuatesolenoidsorrelaysforthe
requestedmachinefunction.
Fortheelectroniccontrollertocontrolthemachineas
desired,eachoftheinputswitches,outputsolenoids,
andrelaysmustbeconnectedandfunctioningproperly.
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