Toro Reelmaster 5510-D - Engine Relays with 5 Terminals (Gasoline Engine)

EngineRelayswith5Terminals(GasolineEngine)
g228830
Figure260
1.Enginepowercenter3.Powerrelay
2.Startrelay
4.Fuelpumprelay
TheengineelectricalsysteminmachineswithaKubotagasolineengineincludes
3electricalrelaysthathave5terminals.Theserelaysareinstalledintheengine
powercenterlocatedontheengine(Figure260).
Thestartrelayisusedtoprovidecurrenttotheenginestartersolenoid.Thestart
relayisenergizedbytheengineECU.
Thepowerrelayisusedtoprovideelectricalpowertoseveralengineelectrical
componentswhenenergizedbytheengineECU.
Thefuelpumprelayisusedtoprovideelectricalpowertothefuelpumpwhen
energizedbytheengineECU.
Note:AnenginefaultcodemaybedisplayedontheInfoCenterDisplayifthe
powerrelay,fuelpumprelayorcircuitwiringisdamaged.
TestingtheEngineRelayswith5Terminals
1.Parkmachineonalevelsurface,lowercuttingunits,shutofftheengine,
applyparkingbrakeandremovekeyfromkeyswitch.
2.Raiseandsupporthoodtoaccessenginerelays.Removeenginepower
centercoverandlocaterelay(s)tobetested.Removerelayfromtheengine
powercenterfortesting.
Note:Priortotakingsmallresistancereadingswithadigitalmultimeter,short
themetertestleadstogether.Themeterwilldisplayasmallresistancevalue
(usually0.5ohmsorless).Thisresistanceisduetotheinternalresistance
ofthemeterandtestleads.Subtractthisvaluefromthemeasuredvalue
ofthecomponentyouaretesting.
ElectricalSystem:TestingtheElectricalComponents
Page7–92
Reelmaster
®
5410/5510/5610Series
15216SLRevC