Operator's Manual

6.Tightenthescrewandturntheignitionkeyto
OFF.
Note:Normallytheengineshouldstartafterthe
abovebleedingproceduresarefollowed.However,if
theenginedoesnotstart,airmaybetrappedbetween
theinjectionpumpandinjectors;refertoBleedingAir
fromtheInjectors(page43).
Understandingthe
DiagnosticLight
Themachineisequippedwithadiagnosticlight
thatindicatesiftheelectroniccontrollersensesan
electronicmalfunction.Thediagnosticlightislocated
onthecontrolpanel(Figure36).Whentheelectronic
controllerisfunctioningcorrectlyandyoumovethe
keyswitchtotheONposition,thecontrollerdiagnostic
lightturnsonfor3secondsandturnofftoindicate
thatthelightisworkingproperly.Iftheengineshuts
off,thenthelightturnsonsteadyuntiltheyouchange
keyposition.Thelightblinksifthecontrollerdetectsa
malfunctionintheelectricalsystem.Thelightstops
blinkingandautomaticallyresetswhenyouturnthe
keyswitchtotheOFFpositiononcethefaulthasbeen
resolved.
g020251
Figure36
1.Diagnosticlight
Whenthecontrollerdiagnosticlightblinks,1of
thefollowingproblemshasbeendetectedbythe
controller:
•Anoutputhasbeenshorted.
•Anoutputisopencircuited.
Usingthediagnosticdisplay,determinewhichoutput
ismalfunctioning;refertoCheckingtheInterlock
Switches(page30).
Ifthediagnosticlightisnotilluminatedwhenthekey
switchisintheONposition,thisindicatesthatthe
electroniccontrollerisnotoperating.Possiblecauses
areasfollows:
•Theloop-backisnotconnected.
•Thelightisburnedout.
•Fusesareblown.
•Itisnotfunctioningcorrectly.
Checktheelectricalconnections,inputfuses,and
diagnosticlightbulbtodeterminethemalfunction.
Ensurethattheloop-backconnectorissecuredto
thewireharnessconnector.
Understandingthe
DiagnosticACEDisplay
Themachineisequippedwithanelectroniccontroller
whichcontrolsmostmachinefunctions.Thecontroller
determineswhatfunctionisrequiredforvariousinput
switches(i.e.,seatswitch,keyswitch,etc.)andturns
ontheoutputstoactuatesolenoidsorrelaysforthe
requestedmachinefunction.
Fortheelectroniccontrollertocontrolthemachineas
desired,eachoftheinputswitches,outputsolenoids,
andrelaysmustbeconnectedandfunctioning
properly.
UsetheDiagnosticACEdisplaytohelpverifyand
correctelectricalfunctionsofthemachine.
CheckingtheInterlock
Switches
ServiceInterval:Beforeeachuseordaily
Thepurposeoftheinterlockswitchesistopreventthe
enginefromcrankingorstartingunlessthetraction
pedalisintheNEUTRALposition,theEnable/Disable
switchisintheDISABLEposition,andtheLower
Mow/RaisecontrolisintheNEUTRALposition.In
addition,theengineshouldshutoffwhenyoupress
thetractionpedalwithnooneintheseatorifthe
parkingbrakeisengaged.
CAUTION
Ifsafetyinterlockswitchesaredisconnected
ordamaged,themachinecouldoperate
unexpectedly,causingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
VerifyingtheInterlockSwitch
Function
1.Parkthemachineonalevelsurface,lowerthe
cuttingunits,engagetheparkingbrake,and
shutofftheengine.
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