Toro 31051 - Page 213

TestingthePTOSwitch(continued)
1.Parkthemachineonalevelsurface,lowerthecuttingdeck,settheparking
brake,andshutofftheengine.
2.Disconnectthebatterynegative(-)cableatthebattery.
3.RemovethesteeringcolumncoversandgetaccesstorearofthePTO
switch;refertoDisassemblingtheBodyAssembly(page7–6).
4.DisconnectthewireharnessconnectorfromthePTOswitchandremovethe
PTOswitchfromthesteeringcolumncover.
5.ThePTOswitchterminalsareidentiedinFigure110andthecircuitryof
thePTOswitchisshownintheCircuitLogicT able(page6–13).Withthe
useofamultimeter(ohmssetting),testtheswitchfunctionstodetermineif
thecontinuityexistsbetweenthevariousterminalsforeachswitchposition.
Checkthecontinuitybetweentheswitchterminals.
CircuitLogicTable
SwitchPositionClosedCircuits
OFF(DOWN)COMB+NCB
COMC+NCC
ON(UP)COMB+NOB
COMC+NOC
6.ReplacethePTOswitchifthetestingdeterminesitisdamaged.
7.IfthePTOswitchtestingiscorrectandacircuitproblemstillexists,check
thewireharness;refertotheElectricalSchematicsandWireHarness
Drawings/DiagramsinAppendixA(pageA–1).
8.Afteryoucompletethetesting,connectthemachinewireharnessconnector
tothePTOswitch.
9.Installthesteeringcolumncovertothesteeringcolumn;refertoAssembling
theBodyAssembly(page7–7).
10.Connectthebatterynegative(-)cabletothebattery.
ProLineH800
Page6–13
ElectricalSystem:TestingtheElectricalComponents
19241SLRevB