Toro Greensmaster 3120 - Troubleshooting

Troubleshooting
CAUTION
Removeallthejewelry,especiallyringsandwatches,beforedoing
anyelectricaltroubleshootingortesting.Disconnectthebattery
cablesunlessthetestrequiresbatteryvoltage.
Fortheeffectivetroubleshootingandrepairs,youmusthaveagood
understandingoftheelectricalcircuitsandcomponentsthatareusedonthis
machine;refertotheElectricalSchematicsinAppendixA(pageA–1).
Ifthemachinehasanyinterlockswitchesthatarebypassed,connectthe
switchesforthecorrecttroubleshootingandsafety.
StartingProblems
Problem
PossibleCauses
Batterychargeislow.
Batterycablesarelooseorcorroded.
Batterygroundtoframeislooseorcorroded.
Wiringatstarterisfaulty.
Startersolenoidisfaulty.
Startermountingboltsarelooseornotsupplyingasufcient
groundforstarteroperation.
Startersolenoidclicks,butstarterwillnotcrank.
Note:Ifsolenoidclicks,problemisnotinsafetyinterlock
system.
Starterisfaulty.
Functioncontrolleverisnotintheneutralposition.
Batterycablesarelooseorcorroded.
Batterygroundtoframeislooseorcorroded.
FuseF1(20amp)islooseorfaulty.
FuseF3(10amp)islooseorfaulty.
Fusiblelinkatstartersolenoid(includedinmainwireharness)
isfaulty.
Wiringtothestartcircuitcomponentsisloose,corrodedor
damaged;refertoElectricalSchematicsandWireHarness
Drawings/DiagramsinAppendixA(pageA–1).
Startsafetyrelay(K2)isfaulty.
Neutralswitchisoutofadjustmentorfaulty.
Startersolenoidfusiblelinkisfaulty.
Ignitionswitchisfaulty.
Startersolenoidisfaulty.
Fuseblockisfaulty.
Nothinghappenswhenstartattemptismade.
Batteryisfaulty.
Greensmaster3120
Page5–5
ElectricalSystem:Troubleshooting
17230SLRevC