SeatSwitch
Theseatswitchisnormallyopenandcloseswhentheoperatorisontheseat.If
thetractionsystemorPTOswitchisengagedwhentheoperatorraisesoutof
theseat,theengineshutsoff.Theseatswitchanditselectricalconnectorare
locateddirectlyundertheseat(Figure155).
TheStandardControlModule(SCM)monitorsthestatusoftheseatswitch.If
thekeyswitchisintheONpositionandtheseatisoccupied,theSCMInseat
inputLEDshouldbeilluminated.
TestingtheSeatSwitch
1.Beforeyoudisconnecttheseatswitchfortesting,ensurethatyoutestthe
switchanditscircuitwiringasaSCMinput;refertoStandardControlModule
(page5–3).
2.IftheSCMveriesthattheseatswitchandcircuitwiringarefunctioning
correctly,thennomoreswitchtestingisnecessary.
3.IftheSCMdeterminesthattheseatswitchandcircuitwiringarenot
functioningcorrectly,thentesttheseatswitchasfollows:
A.EnsurethatthekeyswitchisintheOFFposition.Tilttheseatassembly
uptogetaccesstotheseatswitchelectricalconnections.
g033651
Figure155
1.Seatharnessconnector
2.Machinewireharness
Note:Thereisashortwireharnessthatisusedtoconnecttheseat
switchtothemainwireharnessofthemachine.Thisseatswitchharness
isbetweentheseatandtheseatplate.
B.Disconnectthemachinewireharnesselectricalconnectorfromtheseat
switchharnesselectricalleadundertheoperatorseat(Figure155).
C.Connectamultimeter(ohmssetting)acrosstheseatswitchharness
connectorterminalstocheckthecontinuityoftheseatswitch.
D.Withnopressureontheseat,ensurethatthereisnocontinuitybetween
theharnessterminalsoftheseatswitch.
E.Pressdirectlyontotheseatswitchthroughtheseatcushion.Ensurethat
thereiscontinuitybetweentheharnessterminalsoftheseatswitchas
theseatcushionapproachesthebottomofitstravelindicatingthatthe
seatswitchisfunctioning.
Groundsmaster7210
Page5–29
ElectricalSystem:TestingtheElectricalComponents
16222SLRevC