Toro Groundsmaster 7210 - Yanmar Engine Electronic Control Unit (ECU); Yanmar Engine Electrical Components; CAN-Bus Communications

YanmarEngineElectronicControlUnit(ECU)
g034741
Figure136
1.Aircleaner3.Battery
2.ElectronicControlUnit(ECU)
TheYanmarenginethatpowerstheGroundsmaster7210machineusesan
electroniccontrolunit(ECU)forenginemanagementandtocommunicatewith
theInfoCenterdisplayonthemachine.IfyoumustdisconnecttheengineECU
foranyreason,ensurethatthekeyswitchisintheOFFpositionwiththekey
removedforaminimumof30secondsbeforedisconnectingtheengineECU.
RefertoChapter3:DieselEngine(page3–1).
YanmarEngineElectricalComponents
Whenservicingortroubleshootingtheengineelectricalcomponentsuse
theEngineServiceManualandTroubleshootingManual.ContactyourT oro
distributorforadditionalenginetroubleshootingassistance.
CAN-busCommunications
TheECUandInfoCenterdisplayusedontheGroundsmaster7210machine
communicatewitheachotheronaCANbussystem.Thissystemallowsthe
tractionunittofullyintegrateallthedifferentelectricalcomponentsofthetractor
andbringthemtogetherasone.TheCANbussystemreducesthenumber
ofelectricalcomponentsandconnectionsthatareusedonthemachineand
allowsthenumberofwiresinthewireharnesstobesignicantlyreduced.The
integrationoftheelectricalfunctionsalsoallowstheInfoCenterdisplaytoassist
withtheelectricalsystemdiagnostics.
TheCANidentiesthecontrollerareanetworkthatisusedbetweenthe
controllersonthemachine.The2speciallydesigned,twistedcablesformthe
bus.Thesewiresprovidethedatapathwaysbetweenthecontroller(ECU)and
InfoCenterdisplayusedonthemachine.Theengineeringtermforthesecables
aretheCANHighandCANLow.Attheendsofthetwistedpairofbuscables
arethe120-ohmterminatorresistors.
Groundsmaster7210
Page5–7
ElectricalSystem:GeneralInformation
16222SLRevC