Service Manual

KeySwitch
g190808
Figure162
1.Keyswitch
2.Controlarm
g190999
Figure163
Thekeyswitchislocatedonthecontrolarmandhas3positions:OFF,RUN,
andSTART(Figure163).
TheToroElectronicController(TEC)monitorstheoperationofthekeyswitch.
TestingtheKeySwitch
1.Parkthemachineonalevelsurface,lowerthecuttingdecks,settheparking
brake,andshutofftheengine.Removethekeyfromthekeyswitch.
2.Beforeyoudisconnectthekeyswitchfortesting,ensurethatyoutestthe
switchanditscircuitwiringasaTECelectricalinputwiththeInfoCenter
display;refertoUsingtheInfoCenterDisplayforTroubleshooting(page
5–26).
3.Iftheinputtestingveriesthatthekeyswitchandcircuitwiringarefunctioning
correctly,nofurtherkeyswitchtestingisnecessary.
4.Iftheinputtestingdeterminesthatthekeyswitchandcircuitwiringarenot
functioningcorrectly,proceedwiththefollowingkeyswitchtestingprocedure.
5.Removetherightcontrolarmcovertogetaccesstothekeyswitch;referto
DisassemblingtheControlArm(page6–24).
6.EnsurethatthekeyswitchisintheOFFposition.Disconnectthewireharness
connectorfromthekeyswitch.
7.ThekeyswitchterminalsareidentiedinFigure163andthecircuitryofthe
switchisshownintheCircuitLogicTable(page5–53).Withtheuseofa
multimeter(ohmssetting),testtheswitchfunctionstodetermineifcontinuity
existsbetweenthevariousterminalsforeachswitchposition.Checkthe
continuitybetweentheswitchterminals.
ElectricalSystem:TestingtheElectricalComponents
Page5–52
Groundsmaster
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4300-D
16226SLRevD