Toro Groundsmaster 4500-D Series User Manual (English)

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YanmarEngineElectricalComponents

Whenservicingortroubleshootingtheengineelectricalcomponents,usethe

correctengineservicemanualandtroubleshootingmanual.Also,theYanmar

SMARTASSIST−Directelectroniccontroldiagnosticsservicesystemisavailable

tosupporttheerrordiagnosisandmaintenanceservicesofengineelectrical

controldevices.

CAN−busCommunications

TheT oroTECcontroller(s),theYanmarEngineControllerandtheInfoCenter

DisplayusedontheGroundsmaster4500−Dand4700−Dcommunicatewith

eachotheronaCAN−bussystem.Usingthissystemallowsthetractionunitto

fullyintegrateallthedifferentelectricalcomponentsofthetractionunitandbring

themtogetherasone.TheCAN−bussystemreducesthenumberofelectrical

componentsandconnectionsusedonthemachineandallowsthenumberof

wiresinthewireharnesstobesignicantlyreduced.Theintegrationofelectrical

functionsalsoallowstheInfoCenterDisplaytoassistwithelectricalsystem

diagnostics.

CANidentiestheControllerAreaNetworkthatisusedbetweenthecontrollers

ontheGroundsmaster.Two(2)speciallydesigned,twistedwiresformthe

bus.Thesewiresprovidethedatapathwaysbetweenthecontrollers(theTEC

controllersandtheYanmarelectroniccontrolunit)andtheInfoCenterDisplay

usedonthemachine.TheengineeringtermforthesewiresareCANHighand

CANLow.Attheendsofthetwistedpairofbuswiresare120ohmtermination

resistors.Oneoftheseresistorsisincludedinthewireharnessandthesecond

isinsidetheengineECU.

EachofthecomponentsthatiscontrolledbytheCAN−buslinkneedsonlyfour

(4)wirestooperateandcommunicatetothesystem:CANHigh,CANLow,B+

(power)andground.TheCAN−busneedstheignitionswitchONinputforboth

theTECandengineECUtobeactivated.

ElectricalDrawings

RefertoAppendixA(pageA–1)fortheelectricalschematicsandwireharness

drawingsforGroundsmaster4500−Dand4700−Dmachines.

Groundsmaster

4500-D/4700-D

Page6–7

ElectricalSystem:GeneralInformation

19245SLRevA

Toro Groundsmaster 4500-D Series User Manual