Operator's Manual

2.MovekeyswitchtotheOnpositionandensure
thattheredpowerLEDisilluminated.
3.MoveallinputswitchestoensureallLED’s
changestate.
4.Positioninputdevicesatappropriateposition
toachievetheappropriateoutput.Usethe
followinglogiccharttodeterminetheappropriate
inputcondition.
5.IfspecicoutputLEDisilluminatedwithout
appropriateoutputfunction,checkoutput
harness,connections,andcomponent.Repair
asrequired.
6.IfspecicoutputLEDisnotilluminated,check
bothfuses.
7.IfspecicoutputLEDisnotilluminatedand
inputsareinappropriatecondition,installnew
SCManddetermineiffaultdisappears.
Eachrow(across)inthelogicchartbelowidenties
inputandoutputrequirementsforeachspecic
productfunction.Productfunctionsarelistedinthe
leftcolumn.Symbolsidentifyspeciccircuitcondition
including:energizedtovoltage,closedtoground,and
opentoground.
INPUTSOUTPUTS
FunctionPower
ON
In
Neutral
StartON
Brake
ON
PTOONInSeat
HiTempBacklap
Start
ETR
PTO
Start
——
+
OO
—
OO
++
O
Run(Off
Unit)
——
OOOOOOO
+
O
Run(On
Unit)
—
OO
—
O
—
OOO
+
O
Mow
—
OO
———
OOO
++
Backlap
——
OO
—
OO
—
O
++
HiTemp
—
O
—
OOO
•(–)Indicatesacircuitclosedtoground.–LEDON
•(O)Indicatesacircuitopentogroundor
de–energized–LEDOFF
•(+)Indicatesanenergizedcircuit(clutchcoil,
solenoid,orstartinput)LEDON.
•ABlankindicatesacircuitthatisnotinvolvedwith
thelogic.
Totroubleshoot,turnonthekeywithoutstartingthe
engine.Identifythespecicfunctionthatdoesnot
workandworkacrossthelogicchart.Inspectthe
conditionofeachinputLED’stoensureitmatches
thelogicchart.
IftheinputLED’sarecorrect,checktheoutputLED.
IftheoutputLEDisilluminatedbutthedeviceis
notenergized,measureavailablevoltageatthe
outputdevice,continuityofthedisconnecteddevice,
andpotentialvoltageonthegroundcircuit(oating
ground).Repairswillvarydependingonyourndings.
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