Toro Groundmaster Series - CAN Bus Terminator Resistors

CANbusTerminatorResistors
Systemcommunicationbetweenvariouselectricalcomponentsonthe
Groundsmaster3200/3300/3310machinesisaccomplishedonaCANbus
communicationsnetwork.Twospeciallydesigned,twistedwiresformtheCAN
bus.Thesewiresprovidethedatapathwaysbetweenthecomponentsonthe
network.TheengineeringtermforthesecablesareCANHighandCANLow.
TheCANbuswiresarered/white(CANHigh)andblack/white(CANLow).A120
ohmterminationresistorislocatedateachendoftheCAN–bus.
Formodel31900,31901,31907and31909machines,oneoftheCANbus
terminatorresistorsislocatedattherearoftheoperator’sconsoleandoneof
theCANbusterminatorresistorsislocatedatthefrontoftheoperator’sconsole
undertheconsolecover.BothoftheCANbusterminatorresistorsare(external)
andarereplaceableseparately.
Formodel31902and31903machines,oneoftheCANbusterminatorresistors
islocatedatthefrontoftheoperator’sconsoleundertheconsolecover(external)
andisreplaceableseparately.ThesecondCANbusterminationresistorispart
oftheYanmarengineECU(integrated)andcanbetestedaspartoftheCAN
buswiring.Theintegratedterminationresistorisnotreplaceableseparately.
Note:RefertoAppendixA(pageA–1)foradditionalinformationontheCAN
buswiring.
TestingtheCANbusTerminatorResistors
ExternalResistors
g305816
Figure104
1.CANbusterminatorresistoratconnector
P35
2.CANbusterminatorresistoratconnector
P111(models31900,31901,31907and
31909)
1.Parkthemachineonalevelsurface,lowerthecuttingunit(orattachment),
engagetheparkingbrake,setthekeyswitchtotheOFFpositionandremove
thekeyfromthekeyswitch.
2.Removetheoperator’sconsolecoversifnecessary;refertoRemovingand
InstallingtheOperator’sConsoleCovers(page7–23).
3.DisconnecttheCANbusterminatorresistorfromthemachinewireharness
anduseamultimeter(ohmssetting)tochecktheresistor.Checkthe
ElectricalSystem:TestingtheElectricalComponents
Page6–56
Groundsmaster
®
3200,3300and3310
19240SLRevA