Toro Groundsmaster 4500-D Series - Page 310

FuseIdenticationandFunction(continued)
FuseA−5(10Amp)protectspowersupplytotheenginecontrolunit(ECU).
FuseB−1(7.5Amp)protectsTECcontroller1outputpowersupplyforthetwo
(2)PTOsolenoids(PRV1andPRV2),thecoolingfanspeedsolenoid(TS)and
counterbalancesolenoidvalve(TS).
FuseB−2(7.5Amp)protectsTECcontroller2outputpowersupplyforrightdeck
engagesolenoid(SV1)andleftdeckengagesolenoid(SV2)onGroundsmaster
4700−Dmachines.
FuseB−3(2Amp)protectsthepowersupplytotheInfoCenterdisplay.
FuseB−4(10Amp)protectsthepowersupplytotheoperatorairrideseatcircuit.
FuseB−5(2Amp)protectspowersupplyforthelogicpowercircuitsforTEC
controller1.
FuseC−1(7.5Amp)protectsTECcontroller1outputpowersupplyforcenter
decksraisesolenoid(S5),centerdecksoatsolenoid(S6)andtwospeedshift
solenoid(SV).
FuseC−2(7.5Amp)protectsTECcontroller2outputpowersupplyforright
decklowersolenoid(S8),rightdeckoatsolenoid(S9)andenablesolenoid(S1)
onGroundsmaster4700−Dmachines.
FuseC−3(10Amp)protectsthepowersupplytothepowerpoint.
FuseC−4positionavailableforoptionalkit.
FuseC−5(2Amp)protectspowersupplyforthelogicpowercircuitsforTEC
controller2onGroundsmaster4700−Dmachines.
FuseD−1(7.5Amp)protectsTECcontroller1outputpowersupplyforhydrostat
forwardsolenoid(C1)andhydrostatreversesolenoid(C2).
FuseD−2(7.5Amp)protectsTECcontroller2outputpowersupplyon
Groundsmaster4700-Dmachines.
FuseD−3positionavailableforoptionalkit.
FuseD−4positionavailableforoptionalkit.
FuseD−5(10Amp)protectsthepowersupplytotelematics.
MaxiFuseM1(60Amp)suppliesthepowertotheoperatorcab(ifequipped).
FuseTesting
TurnignitionswitchtotheRUNposition(donotstartengine).Withthefuse
installedinthefuseblock,useamultimetertoverifythat12VDCexistsatboth
oftheterminaltestpointsonthefuse.If12VDCexistsatoneofthefusetest
pointsbutnotattheother,thefuseisfaulty.
1.EnsurethatthekeyswitchisinOFFpositionandthekeyisremovedfrom
thekeyswitch.
2.Openpowercentercoverfromoperatorplatformtoaccessfuses.
3.Removefusefromfuseblockfortesting.Fuseshouldhavecontinuityacross
theterminals.
4.Afterfusetestingiscompleted,installknowngoodfuseintofuseblock.
5.Replacethefuseiftestingdeterminesthatitisdamaged.
ElectricalSystem:ComponentTesting
Page6–28
Groundsmaster
®
4500-D/4700-D
19245SLRevA