Toro Greensmaster 3120 - Page 193

CuttingUnitOperatingProblems(continued)
Problem
PossibleCauses
Joystickrelay(K3)isfaulty.
Mowrelay(K4)isfaulty.
Mowswitchisoutofadjustmentorfaulty.
Cuttingunitsrun(butshouldnot)whenraised.
Ahydraulicproblemexists;refertoChapter4:Hydraulic
System(page4–1).
Wiringtorun/mow/backlapcircuitscomponentsisloose,
corrodedordamaged;refertoElectricalSchematicsand
WireHarnessDrawings/DiagramsinAppendixA(pageA–1).
Fuseblockorfuseisfaulty.
SolenoidcoilS1(machineswithoutbacklap)orS1R1(units
withbacklap)isfaulty.
Mowswitchand/ormowrelay(K4)isfaulty.
Raiseorlowerswitchand/orjoystickrelay(K3)isfaulty.
Cuttingunitsdonotrunwhenloweredwiththefunction
controlleverintheMOWposition.
Ahydraulicproblemexists;refertoChapter4:Hydraulic
System(page4–1).
Wiringtoraisecircuitcomponentsisloose,corrodedor
damaged;refertoElectricalSchematicsandWireHarness
Drawings/DiagramsinAppendixA(pageA–1).
Fuseblockorfuseisfaulty.
DiodeD3isopen.
Raiseswitchisfaulty.
Raiserelay(K6)isfaulty.
SolenoidcoilS3and/orS2isfaulty.
Cuttingunitswillnotraise.
Ahydraulicproblemexists;refertoChapter4:Hydraulic
System(page4–1).
Wiringtolowercircuitcomponentsisloose,corrodedor
damaged;refertoElectricalSchematicsandWireHarness
Drawings/DiagramsinAppendixA(pageA–1).
Fuseblockorfuseisfaulty.
DiodeD2isopen.
Raiseswitchisfaulty.
Lowerswitchisfaulty.
Joystickrelay(K3)isfaulty.
Lowerrelay(K5)isfaulty.
6seconddelaytimerisfaulty.
Cuttingunitswillnotlower.
SolenoidcoilS2orS4isfaulty.
Greensmaster3120
Page5–7
ElectricalSystem:Troubleshooting
17230SLRevC