Operator's Manual

Understandingthe
DiagnosticLight
Themachineisequippedwithadiagnosticlight,which
indicatesifthemachinedetectsamalfunction.The
diagnosticlightislocatedontheInfoCenter,above
thedisplayscreen(Figure60).Whenthemachine
isfunctioningproperlyandthekeyswitchismoved
totheON/RUNposition,thediagnosticlightturnson
brieytoindicatethelightisworkingproperly.When
amachineadvisorymessageisdisplayed,thelight
illuminateswhenthemessageispresent.Whena
faultmessageisdisplayed,thelightblinksuntilthe
faultisresolved.
g021272
Figure60
1.Diagnosticlight
CheckingtheInterlock
Switches
Thepurposeoftheinterlockswitchesistopreventthe
enginefromcrankingorstartingunlessthetraction
pedalisintheNEUTRALposition,theEnable/Disable
switchisintheDISABLEposition,andtheLower
Mow/RaisecontrolisintheNEUTRALposition.In
addition,theengineshouldstopwhenthetraction
pedalispressedwithoperatorofftheseatorifthe
parkingbrakeisengaged.
CAUTION
Ifsafety-interlockswitchesaredisconnected
ordamagedthemachinecouldoperate
unexpectedlycausingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
VerifyingtheInterlock-Switch
Function
1.Parkthemachineonalevelsurface,lowerthe
cuttingunits,stoptheengine,andengagethe
parkingbrake.
2.TurnthekeyswitchtotheONposition,butdo
notstartthemachine.
3.Locatetheappropriateswitchfunctioninthe
diagnosticsmenuontheInfoCenter.
4.Individually,changeeachoftheswitchesfrom
opentoclosed(i.e.,sitonseat,engagetraction
pedal,etc.),andnotethattheappropriatestate
oftheswitchchanges.
Note:Repeatthisforallswitchesthatyoucan
changebyhand.
5.Ifaswitchisclosedandtheappropriate
indicatordoesnotchange,checkallwiringand
connectionstotheswitchand/orcheckthe
switcheswithanohmmeter.
Note:Replaceanydefectiveswitchesand
repairanydefectivewiring.
Note:TheInfoCenterdisplayalsohastheabilityto
detectwhichoutputsolenoidsorrelaysareturned
on.Thisisaquickwaytodetermineifamachine
malfunctioniselectricalorhydraulic.
VerifyingOutputFunction
1.Parkthemachineonalevelsurface,lowerthe
cuttingunits,stoptheengine,andengagethe
parkingbrake.
2.TurnthekeyswitchtotheONpositionandstart
themachine.
3.Locatetheappropriateoutputfunctioninthe
diagnosticsmenuontheInfoCenter.
4.Sitontheseatandattempttooperatethe
desiredfunctionofthemachine.
Note:Theappropriateoutputsshouldchangestate
toindicatethattheECMisturningonthatfunction.
Ifthecorrectoutputsdonotilluminate,verifythatthe
requiredinputswitchesareinthenecessarypositions
toallowthatfunctiontooccur.Verifycorrectswitch
function.
Iftheoutputdisplaysareonasspecied,butthe
machinedoesnotfunctionproperly,thisindicatesa
non-electricalproblem.Repairasnecessary.
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