g288552
Figure241
1.YanmarECU3.Glowplugrelay
2.Startrelay
ThefollowingrelaysarelocatedontheleftsideoftheengineneartheYanmar
ECU(Figure241):
•Thestartrelaysuppliespowertotheenginestarter.Theglowplugrelayis
energizedbytheYanmarECU.
•Theglowplugrelaysuppliespowertotheengineglowplugs.Theglowplug
relayisenergizedbytheYanmarECU.
g288553
Figure242
1.Cabheadliner(roofremoved)
2.Airconditionerrelay
TheairconditionerrelayusedontheGroundsmaster5910suppliespowertothe
airconditioningsystemevaporatorfansandthecompressorclutch.Thisrelayis
energizedwhenthekeyswitchisintheSTARTorRUNposition(cabcontactor
closed),thefanspeedswitchissettolow,mediumorhighspeedandtheair
conditioningswitchissettoON.Theairconditionerrelayislocatedinthecab
headlinernearthefuseblock(Figure242).T oaccesstherelay,removeroof
panelfromtopofcab(seeRoofAssembly(page9–9)).
Testing
1.MakesurekeyswitchisOFF .Removekeyfromkeyswitch.
2.Turnbattery−disconnectswitchtotheOFFposition.
3.Verifythelocationoftherelaybeingtested(above)andaccesstherelay.
ElectricalSystem:ComponentTesting
Page6–100
Groundsmaster
®
5900&5910
16227SLRevB
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