Service Manual
EngineElectronicControlUnit(ECU)
2
1
g274712
Figure8
1.Electroniccontrolunit(30603/30605/30635)
2.Alternator
TheYanmarenginethatpowersyourGroundsmasterusesanelectroniccontrol
unit(ECU)forenginemanagementandalsotocommunicatewiththemachine
TECcontrollersandtheoperatorInfoCenterdisplayonthemachine.Allwire
harnesselectricalconnectorsshouldbepluggedintotheengineECUbeforethe
machineignitionswitchismovedfromtheOFFpositiontoeithertheONor
STARTposition.
Note:Onmodels30607,30609and30636agroundwireisusedtogroundthe
engineECUtothemachineframe.ThegroundwireisconnectedtotheECUwith
oneofthemountingscrewsandisconnectedtotheframeattheenginemount.
2
1
g274713
Figure9
1.Electroniccontrolunit(30607/30609/30636)
2.Alternator
Theengineelectricalcomponents(e.g.engineECU,fuelinjectors,EGR,exhaust
DPF)areidentiedandmatchedintheengineECUprogram.Ifengineelectrical
componentsarereplacedontheengine,theYanmarelectronictoolmustbeused
toupdatetheengineECUprogramwhichwillensurecorrectengineoperation.
Groundsmaster
®
4000-D&4010-D
Page4–3
YanmarDieselEngine:GeneralInformation
13202SLRevF