Toro 30534N - Understanding the Diagnostic Light; Diagnostic Ace Display

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)
Themachineisequippedwithadiagnosticlightwhich
indicatesiftheelectroniccontrollersensesanelectronic
malfunction.Thediagnosticlightislocatedonthecontrol
panel(Figure26).Whentheelectroniccontrolleris
functioningcorrectlyandthekeyswitchismovedtothe
Onposition,thecontrollerdiagnosticlightwillturnON
for3secondsandturnOFFtoindicatethelightisworking
properly.Ifthemachinekillsthelightwillturnonsteady
untilthekeypositionischanged.Thelightwillblinkifthe
controllerdetectsamalfunctionintheelectricalsystem.The
lightwillstopblinkingandautomaticallyresetwhenthekey
switchisturnedtotheOffpositiononcethefaulthasbeen
resolved.
Figure26
1.Diagnosticlight
Whenthecontrollerdiagnosticlightblinks,oneofthe
followingproblemshasbeendetectedbythecontroller:
•Oneoftheoutputshasbeenshorted.
•Oneoftheoutputsisopencircuited.
Usingthediagnosticdisplay,determinewhichoutputis
malfunctioning;refertoCheckingtheInterlockSwitches.
Ifthediagnosticlightisnotilluminatedwhenthekeyswitchis
intheOnposition,thisindicatesthattheelectroniccontroller
isnotoperating.Possiblecausesareasfollows:
•Loop-backisnotconnected.
•Thelightisburnedout.
•Fusesareblown.
•Itisnotfunctioningcorrectly.
Checktheelectricalconnections,inputfuses,anddiagnostic
lightbulbtodeterminethemalfunction.Ensurethatthe
loop-backconnectorissecuredtothewireharnessconnector.
DiagnosticAceDisplay
4WheelDriveonly
Themachineisequippedwithanelectroniccontrollerwhich
controlsmostmachinefunctions.Thecontrollerdetermines
whatfunctionisrequiredforvariousinputswitches(i.e.seat
switch,keyswitch,etc.)andturnsontheoutputstoactuate
solenoidsorrelaysfortherequestedmachinefunction.
Fortheelectroniccontrollertocontrolthemachineas
desired,eachoftheinputswitches,outputsolenoids,and
relaysmustbeconnectedandfunctioningproperly.
UsetheDiagnosticACEdisplaytoolandoverlaytohelp
verifyandcorrectelectricalfunctionsofthemachine.Contact
yourTorodistributorforassistance.
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