Toro 03672 - Understanding the Diagnostic Light; Checking the Interlock Switches

Understandingthe
DiagnosticLight
Themachineisequippedwithadiagnosticlightwhich
indicatesifthemachinedetectsamalfunction.The
diagnosticlightislocatedontheInfoCenter,above
thedisplayscreen(Figure59).Whenthemachineis
functioningproperlyandthekeyswitchismovedto
theOn/Runposition,thediagnosticlightwillturnon
brieytoindicatethelightisworkingproperly.When
amachineadvisorymessageisdisplayed,thelight
willilluminatewhenthemessageispresent.When
afaultmessageisdisplayed,thelightwillblinkuntil
thefaultisresolved
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Figure59
1.Diagnosticlight
CheckingtheInterlock
Switches
Thepurposeoftheinterlockswitchesistopreventthe
enginefromcrankingorstartingunlessthetraction
pedalisintheNeutralposition,theEnable/Disable
switchisintheDisableposition,andtheLower
Mow/RaisecontrolisintheNeutralposition.In
addition,theengineshouldstopwhenthetraction
pedalispressedwithoperatoroffoftheseatorifthe
parkingbrakeisleftengaged.
CAUTION
Ifsafetyinterlockswitchesaredisconnected
ordamagedthemachinecouldoperate
unexpectedlycausingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
VerifyingtheInterlockSwitch
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.),andnotethattheappropriate
stateoftheswitchchanges.Repeatthisforall
switchesthatyoucanchangebyhand.
5.Ifaswitchisclosedandtheappropriate
indicatordoesnotchange,checkallwiring
andconnectionstotheswitchand/orcheck
theswitcheswithanohmmeter.Replaceany
defectiveswitchesandrepairanydefective
wiring.
Note:TheInfoCenterdisplayalsohastheabilityto
detectwhichoutputsolenoidsorrelaysareturned
on.Thisisaquickwaytodetermineifamachine
malfunctioniselectricalorhydraulic.
VerifyingOutputFunction
1.Parkthemachineonalevelsurface,lowerthe
cuttingunits,stoptheengine,andengagethe
parkingbrake.
2.TurnthekeyswitchtotheOnpositionandstart
themachine.
3.Locatetheappropriateoutputfunctioninthe
diagnosticsmenuontheInfoCenter.
4.Sitontheseatandattempttooperatethe
desiredfunctionofthemachine.Theappropriate
outputsshouldchangestatetoindicatethatthe
ECMisturningonthatfunction.
Note:Ifthecorrectoutputsdonotilluminate,verify
thattherequiredinputswitchesareinthenecessary
positionstoallowthatfunctiontooccur.Verifycorrect
switchfunction.
Iftheoutputdisplaysareonasspecied,butthe
machinedoesnotfunctionproperly,thisindicatesa
non-electricalproblem.Repairasnecessary.
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