Toro Groundsmaster 4300-D - CAN-Bus Terminator Resistor

CAN-busTerminatorResistor
g035036
Figure187
1.CAN-busterminatorresistor
2.Keyway
Thesystemcommunicationbetweentheelectricalcomponentsonthe
Groundsmaster4300-DmachineisaccomplishedonaCAN-buscommunication
system.The2speciallydesigned,twistedcablesformthebusforthenetwork
areusedonthemachine.Thesewiresprovidethedatapathwaysbetweenthe
machinecomponents.
The120ohmCAN-busterminatorresistorplugsintotheplatformwireharness
inthecontrolarm.Theresistorcanbeaccessedbyremovingtheleftcontrol
armcover.
Note:Theinsulatorwedgeintheterminatorresistorisblueforidentication
purposes.Thereisalsoacenterkeywaytopreventtheterminatorresistorfrom
pluggingintothewrongwireharnessconnector.
Note:RefertotheElectricalSchematicandWireHarnessDrawings/Diagrams
foradditionalinformationonthelocationoftheterminatorresistorandwire
connections.
IMPORTANT
Theterminatorresistorisrequiredforproperelectricalsystem
operation.
TestingtheCAN-busTerminatorResistor
1.TheCAN-busterminatorresistor(Figure187)canbetestedusingadigital
multimeter(ohmssetting).LocatetheCAN-busterminatorresistorand
removethecabletiethatsecurestheresistortothewireharness.Unplugthe
resistorfromthewireharnessfortesting.
2.Useadigitalmultimeter(ohmssetting)tomeasuretheresistancevaluefor
theCAN-busterminatorresistor.Thereshouldbe120ohmsresistance
betweentheterminalsAandB.TheterminalCisnotused.
3.IfthetestingdeterminesthattheCAN-busterminatorresistorisdamaged,
replacetheCAN-busterminatorresistor.
4.Afteryoucompletethetesting,ensurethattheCAN-busterminatorresistor
isfullyinstalledintothewireharnessconnectorandsecuredtothewire
harnesswithcabletie.
Groundsmaster
®
4300-D
Page5–81
ElectricalSystem:TestingtheElectricalComponents
16226SLRevC