Service Manual

ToroElectronicControllers(TEC)(continued)
IMPORTANT
Whentestingforwireharnesscontinuityattheconnectorforthe
TECcontroller,takecaretonotdamagetheconnectorpinswith
multimetertestleads.Ifconnectorpinsareenlargedordamaged
duringtesting,connectorrepairwillbenecessaryforproper
machineoperation.
ThemachineelectricalschematicandwireharnessdrawingsinAppendix
A(pageA–1)canbeusedtoidentifypossiblecircuitproblemsbetweenthe
controllersandtheinput/outputdevices(e.g.switchesandsolenoidcoils).
BecauseofthesolidstatecircuitrybuiltintotheTECcontrollers,thereisno
methodtotestacontrollerdirectly.Acontrollermaybedamagedifanattemptis
madetotestitwithanelectricaltestdevice(e.g.digitalmultimeterortestlight).
IfremovaloftheTECcontrollersisnecessary,labelthecontrollerstomake
suretheyareproperlyconnectedtothemachine.Thetwo(2)TECcontrollers
arevisuallyidenticalbuttheyhavedifferentsoftwareandthereforecannot
beinterchanged.Thepowermount(item5inFigure216)canbeseparated
fromtheoperatorplatformandcarefullyliftedfromtheplatformtoaccessthe
controllerfasteners.
Note:TheTECcontrollersusedontheGroundsmaster4000−Dand4010−D
arematchedforcorrectmachineoperation.Ifeitherofthesecomponentsare
replacedforanyreason,systemsoftwareneedstobereprogrammedbyyour
ToroDistributor.
IMPORTANT
BeforeperforminganyweldingonyourGroundsmaster,disconnect
bothpositiveandnegativebatterycablesfromthebattery,
disconnectthewireharnessconnectorfrombothoftheTEC
controllersanddisconnecttheterminalconnectorfromthe
alternator.Also,disconnectandremovetheengineECUfromthe
machinebeforewelding.Thesestepswillpreventdamagetothe
machineelectricalsystem.
g321413
Figure220
1.TECcontroller3.Socketheadscrew
2.Machineharnessconnector
Groundsmaster
®
4000-D&4010-D
Page6–63
ElectricalSystem:ComponentTesting
13202SLRevF