Toro 74946 Quick start guide

FormNo.3417-740RevA
HorizonControlModule
ForZMasterLawnMowers
ModelNo.74946—SerialNo.402000000andUp
ModelNo.74947—SerialNo.40200000andUp
ModelNo.74969—SerialNo.400000000andUp
SoftwareGuide
Readthisinformationcarefullytolearnhowtooperateandmaintainyourproductproperlyandtoavoidinjury
andproductdamage.Youareresponsibleforoperatingtheproductproperlyandsafely.ReadyourOperator’s
Manualformoreinformation.
WARNING
CALIFORNIA
Proposition65Warning
ThisproductcontainsachemicalorchemicalsknowntotheStateofCalifornia
tocausecancer,birthdefects,orreproductiveharm.
ScreenIcons
Theinformationscreenusesthefollowingicons:
GaugeandMeters
LowEngineSpeed
Processing
AdvancedSettings
TransmissionOilMaintenance
BatteryVoltage
MaintenanceandService
Engine-OilTemperatureEngineHours
FuelLevelEngineOilMaintenance
Cancel/Exit
©2017—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420
Registeratwww.T oro.com.OriginalInstructions(EN)
PrintedintheUSA
AllRightsReserved*3417-740*A

PTO
No
*Locatedonbottomrowofsome
menuscreens
ToggleBetweenScreens
ParkingbrakeYesEnter/Return
NeutralLock
*LocatedintoprowofInformationScreen
DecreasePrevious
OPC(OperatorPresenceControl)IncreaseNext
MaximumEngineSpeedPlay/StartReset
EfcientEngineSpeedPause/Stop
ErrorWarning
Hydraulic-FluidTemperatureRecommendedEngineCoolDownTimeShutOffEngine
2

ProductOverview
g229466
Figure1
1.LDU(LogicDisplayUnit)3.Alarm
2.MCU(MasterControlUnit)
g228164
Figure2
LDU(LogicDisplayUnit)
1.Screen3.Buttons
2.LEDstatuslight
Screen
Thescreendisplaysiconsandinformationrelativeto
machineoperationandisbacklitforviewinginlowlight
situations.Thescreenislocatedabovethebuttons.
RefertotheScreenIcons(page1)sectionforicon
descriptions.
LEDStatusLight
TheLEDstatuslightismulti-coloredtoindicatethe
systemstatusandislocatedontherightsideofthe
panel.Duringstartup,theLEDilluminatesred,then
orange,thengreentoverifyfunctionality.
•SolidGreen:indicatesnormaloperatingactivity.
•BlinkingRed:indicatesthatafaultisactive.
•BlinkingGreenandOrange:indicatesthata
clutchresetisrequired.
Buttons
Themulti-functionalbuttonsarelocatedatthebottom
ofthepanel.Theiconsdisplayedontheinformation
screenabovethebuttonsindicatethecurrentfunction.
Thebuttonsallowyoutoselecttheenginespeedand
navigatethroughsystemmenus.
Alarm
Ifanerroroccurs,anerrormessagedisplays,theLED
turnsred,andthealarmsoundsaudiblyasfollows:
•Afastchirpsoundindicatescriticalerrors.
•Aslowchirpingsoundindicateslesscriticalerrors,
suchasrequiredmaintenanceorserviceintervals.
Note:Duringstartup,thealarmsoundsbrieyto
verifyfunctionality.
InformationScreens
Themaininformationscreensareasfollows:
•StartupScreen(page3)
•Engine-OffScreen(page4)
•Engine-OnScreen(page4)
StartupScreen
Duringstartup,thescreendisplaysastartupgraphic
for1second,soundsthealarm,andilluminatesthe
LED,changingfromredtoorangetogreen.
3

EngineScreens
Engine-OffScreen
Whenthekeyisonwithouttheenginerunning,the
Engine-Offscreendisplays(Figure3).
g030172
Figure3
1.Hoursremaininguntiltransmissionuidmaintenanceis
required
2.Batteryvoltagedisplay
3.Safetyinterlockstatusindicators
4.Fuel-levelgauge(iffuelsenderisavailable)
5.Screentogglesbetweenhoursremaininguntilengineoil
maintenanceandnon-resettableenginehourcounter
Engine-OnScreen
Whentheengineisrunning,theEngine-Onscreen
displays(Figure4).
g030173
Figure4
1.Enginespeedmode4.Enginespeed
2.Safetyinterlockstatus
indicators
5.Fuellevelgauge(iffuel
senderisavailable)
3.Enginetemperature
EngineSpeedMode
3modesareavailable:LOW,EFFICIENT,andMAXIMUM.
•LOW:Lowtransportspeed/Lowidleforreducing
deckpackinginwetmowingconditions.
•EFFICIENT:Mediumtransportspeedandmaximum
fueleconomyandnormalmowingconditions.
•MAX:Maximumtransportspeed/Highidlefor
extrememowingconditions.
Thepanelilluminatesshowingthecurrentengine
speedmode(LowisselectedinFigure4).
SafetyInterlockStatusIndicators
Theseilluminatewheneachcontrolisinthestarting
position(i.e.,PTOdisengaged,parkingbrake
engaged,motion-controlleversintheNEUTRAL-LOCK
position,andtheoperatorispresent).
•ThePTOmustbedisengaged,brakeengaged,
andmotion-controlleversout(NEUTRAL-LOCK
position)tostarttheengine.(Youdonotneedto
beintheseattostarttheengine.)
Note:ThestartercrankswiththePTOswitchin
theON(pulledup)position;however,thesystem
disengagesthePTOandaPTOreseterroroccurs.
EngagingthePTOrequiresyoutoresetthePTO
switchbyturningitOFF(pusheddown)andON.
•YoumustbeintheseatwhilethePTOisengaged,
theparkingbrakemustbedisengaged,orthe
motion-controlleversmustbemovedinward;
otherwise,theengineshutsoff.
•Theengineshutsoffifeithertheleft,theright,
orbothleversaremovedfromNEUTRAL-LOCK
positionwhiletheparkingbrakeisengaged.
Note:RefertothemachineOperator’sManualto
checkthesafetyinterlocksystem.
EngineTemperature
Abargraphdisplaystheenginetemperature.When
thetemperatureishighandapproachinganoverheat
condition,thebargraphashes.Whentheengine
hasoverheated,thebargraphllscompletely.
EngineSpeed
Displaysthespeedoftheengine.
FuelLevel(iffuelsenderisavailable)
Thefuellevelisshownonabardisplay.Anerror
appearswhenthefuellevelislow(approximately1
gallonremaininginthetank).
4

MenuSelectionScreen
TheMenuSelectionScreendisplayswhenyouplace
themotion-controlleversintheNEUTRAL-LOCKposition
andpressandholdthe2outsideLDUbuttons.
g228165
Figure5
1.Outsidebuttons2.Menuselectionscreen
TheMenuSelectionScreenallowsyoutocycle
throughthedifferentmenuoptionsbypressingthe
togglebutton.Whenthedesiredmenuoptionis
highlighted,presstheenterbuttontoselectit.
Note:Allmenuoptionsarelockedifthe
motion-controlleversarenotintheNEUTRAL-LOCK
position.
Pressandholdthe2outsidebuttonstoreturntothe
defaultscreen.
Themenuselectionscreenallowsyoutocycle
throughthefollowingscreens.
•MaintenanceandServiceMenu(page5)
•GaugesandMetersMenu(page8)
•AdvancedSettingsMenu(page10)
g038651
Figure6
1.MaintenanceandService4.Cancel/Exit
2.GaugesandMeters5.Togglebetweenscreens
3.AdvancedSettings6.Enter/Return
MaintenanceandServiceMenu
Youcanscrollbetweenthefollowingscreensinthe
MaintenanceandServicemenu:
•StatusofInputs(page5)
•StatusofOutputs(page6)
•CurrentErrorMessages(page6)
•HydraulicTransOil(page6)
•EngineOil(page7)
•MachineInformation(page7)
•ModuleInformation(page7)
StatusofInputs
Thisscreenlistsalloftheinputstothesystemand
highlightswhichiscurrentlyactive.Inputswith
numericalvaluesdisplaythecurrentvalue.
g030183
Figure7
1.StatusofInputs5.Brake
2.PTOSwitch6.Previous
3.Neutral7.Togglebetweenscreens
4.OilPressure8.Next
ThefollowingarealistofitemsavailableintheStatus
ofInputsscreen:
•Systemvoltage
•Enginecommunication(highlightsifmoduleis
communicatingwithengineECU)
•PTOswitch(highlightsifOn)
5

•Fuelsendervoltage(showsvoltage)
•Neutralswitch(highlightsifOn)
•Brakeswitch(highlightsifOn)
•Seatswitch(highlightsifOn)
•Oilpressureswitch(highlightsifOn)
•Enginetemperature(showstemperature)
StatusofOutputs
Thisscreenlistsalloftheoutputsfromthesystem
andhighlightswhichoneiscurrentlyactive.Outputs
withnumericalvaluesdisplaythecurrentvalue.
g038556
Figure8
1.StatusofOutputs3.ClutchOutput
2.SpeedSignal4.EnginePowertoRun
ThefollowingarealistofitemsavailableintheStatus
ofInputsscreen:
•Enginespeedsignalshowsvoltagesignalsent
fromthesystemtotheengineECU(Engine
ControlUnit).
•PTOoutput(highlightsifOn)
•Engineshutdownoutput(highlightsifOn)
•Modulecommunication(highlightsifLDUand
MCUarecommunicating)
•Alarm(highlightsifOn)
•Starter(highlightsifOn)
CurrentErrorMessages
Thisscreendisplaysthecurrenterrorastextwiththe
enginehoursatwhichtheerroroccurred.Thetoggle
buttonallowsyoutoscrollbetweenscreensifmultiple
errorsareactive.Ifonly1erroroccurs,thetoggle
buttondoesnotchangescreens.
g030185
Figure9
1.CurrentError
2.Errordisplay(e.g.,LowOilPressure)
3.Enginehourswhentheerroroccurred
HydraulicTransOil
Thisservicereminderscreendisplaysthehoursuntil
thehydraulictransmissionoilmaintenanceisdue.
g030186
Figure10
1.HydraulicTransOil
2.Reminderdisplay
3.Enginehoursremaininguntiltheserviceisdue
Pressthetogglebuttontoalsodisplaytheengine
hoursatwhicheveryservicereminderresetwas
performed.
g030187
Figure11
1.HydraulicTransOil
2.ServiceHistorydisplay
3.Servicereminderresetwasperformed(e.g.,250and750
enginehours)
6

EngineOil
Thisservicereminderscreendisplaysthehoursuntil
theengineoilmaintenanceisdue.
g030188
Figure12
1.EngineOil
2.Reminderdisplay
3.Enginehoursremaininguntiltheserviceisdue
Pressthetogglebuttontoalsodisplaytheengine
hoursatwhicheveryservicereminderresetwas
performed.
g030189
Figure13
1.Engineoil
2.ServiceHistorydisplay
3.Servicereminderresetwasperformed(e.g.,250and750
enginehours)
DeckGearBoxOil
ApplicableModelsOnly
ThisscreendisplaysthehoursuntiltheDeckGear
BoxOilmaintenanceisdue.
g219156
Figure14
1.DeckGearBoxOil
2.Reminderdisplay
3.Enginehoursremaininguntiltheserviceisdue
MachineInformation
Thescreendisplaystheserialnumberandmodel
numberofthemachine.
g030190
Figure15
1.MachineInformation3.Serialnumber
2.Modelnumber
ModuleInformation
Thescreendisplaysthecurrentinstalledversion
ofsoftwareandhardwareforboththeLDU(Logic
DisplayUnit)andtheMCU(MasterControlUnit).
SelectthetogglebuttontoseetheMCUscreen.
g030191
Figure16
1.ModuleInformation4.SoftwareVersion
2.LDU5.Toggle
3.HardwareVersion
g030192
Figure17
1.ModuleInformation3.HardwareVersion
2.MCU4.SoftwareVersion
Toexitthescreen,pressthepreviousornextarrow
keys.Pressingtheenterbuttontakesyoubacktothe
MenuSelectionscreen.
7

g030193
Figure18
1.Exit3.Enter/Return
2.ExitMenu
GaugesandMetersMenu
Youcanscrollbetweenthefollowingscreensinthe
GaugesandMetersmenu:
•EngineHours(page8)
•PTOHours(page8)
•FuelUsed(page8)
•FuelEconomy(page9)
•TripStatistics(page9)
EngineHours
Thisscreendisplaysanon-resettable,totalengine
hourcounterandresettabletripcounter.
g030202
Figure19
1.EngineHours3.Triphours
2.Totalhours4.Resettriphours
ToresettheTriphourmeter,highlighttheTriphour
meterandpresstheResetbutton;toconrmthe
reset,pressY(yes)orN(no)tocancel(Figure20).
g030203
Figure20
1.Reset3.Y(yes)
2.Areyousure?4.N(no)
PTOHours
Thisscreendisplaysanon-resettable,totalPTOhour
counterandaresettabletripPTOcounter.
g030204
Figure21
1.PTOHours3.Triphours
2.Totalhours4.Resettriphours
ToresettheTriphourmeter,highlighttheTriphour
meterandpresstheResetbutton;toconrmthe
reset,pressY(yes)orN(no)tocancel(Figure20).
FuelUsed
ThisscreendisplaysthetotalUSgallons/litersoffuel
usedfromthelasttimeitwasreset.Pressthereset
buttontoresetthefuelusedcounter.
g038362
Figure22
1.FuelUsed3.Reset
2.DisplaysUSgallons/liters
used
8

FuelEconomy
ThisscreendisplaystheUSgallons/litersoffuelused
perenginehour.
g038363
Figure23
1.FuelEconomy2.DisplaysUSgallons/liters
perhour
TripStatistics
Thereare5tripstatisticsscreenstoscrollthoughand
view.
g030207
Figure24
1.TripStatistics2.Viewtripstatistics
Eachscreenfeaturesresettablecountersforthe
followingparameters:EngineHours,PTOHours,and
totalUSgallons/litersoffuelused.
Youcanpauseorstopthecollectionofstatistics
andplayorstartthecollectionoftripstatistics.
Forexample,whenTripStatistics1ispaused,the
statisticsarehighlightedandtheresetbuttonis
available.Pressingtheresetbuttonresetsall3
parameters.Pressingtheplaybuttonstartsdata
collection.
g038364
Figure25
1.TripStatistics14.DisplaysUSgallons/liters
offuel
2.Displaysenginehours5.Play/Start
3.DisplaysPTOhours6.Reset
Whenatripstatisticisplaying,thestatisticsarenot
highlightedandtheresetbuttonisblackedoutand
notavailable.Pressingthepausebuttonstopsthe
collectionofdata.
g038365
Figure26
1.TripStatistics44.DisplaysUSgallons/liters
offuel
2.Displaysenginehours5.Pause/Stop
3.DisplaysPTOhours
PressthetogglebuttonontheTripStatistics5screen
togobacktothemainTripStatisticsscreen.
9

AdvancedSettingsMenu
Whentheadvancedsettingsmenuisselected,the
modulepromptsyoufora4digitpasscode.The
defaultdigitsonthedisplayscreenare0000.
g030221
Figure27
1.Enterpassword4.Enter/Return
2.Activedigits5.Decrease
3.Increase
Thepasscodeis1982.Whentheactivedigitis
highlighted,presstheincreaseordecreasebuttonsto
scrollthroughdigitsfrom0to9.Pressentertoselect
thehighlighteddigit.
Iftheincorrectpasswordisentered,themodule
takesyoubacktothemenuselectscreen.Whenthe
correctpasswordisentered,youcanscrollbetween
thefollowingscreens:
•EngineOil(page10)
•HydraulicTransOil(page10)
•HistoricalError(page10)
•Alarms(page11)
•EngineSettings(page11)
•CalibrateEngineSettings(page12)
•FactoryDefaults(page12)
EngineOil
Afterperformingthenecessarymaintenance,this
screenallowsyoutoresetthenumberofhoursuntil
theengineoilserviceisdue.
g030245
Figure28
1.EngineOil3.Remaininghoursuntil
service
2.Reminderdisplay4.Reset
Pressingtheresetbuttonbringsupascreenaskingto
conrmtheresetreminder.
HydraulicTransOil
Afterperformingthenecessarymaintenance,this
screenallowsyoutoresetthenumberofhoursuntil
thehydraulictransmissionoilserviceisdue.
g030246
Figure29
1.HydraulicTransOil3.Remaininghoursuntil
service
2.Reminderdisplay4.Reset
Pressingtheresetbuttonbringsupascreenaskingto
conrmtheresetreminder.
Everytimeyouresetthehydraulictransmissionoil
servicereminder,themodulepromptsyoutoselect
whetherthemachinewasservicedwithToroPremium
HydraulicOil.PressingY(yes)orN(no)determines
thecorrectmaintenanceschedule.
HistoricalError
Thisscreendisplayserrorsthatarenolongeractive.
Thelogkeepsarunningcountofthenumberoftimes
theerrorhasoccurredduringthelifeofthemachine
andtheenginehouratwhichthelastoccurred.The
logdisplaystheerrorsstartingwiththemostrecent
occurrence.
g030224
Figure30
1.HistoricalError3.Numberoftimestheerror
occurredduringlifeof
machine(e.g.,3X)
2.Currenterror(e.g.LowOil
Pressure)
4.Enginehouratwhichthe
errorlastoccurred
10

Alarms
Thealarmsscreenallowsyoutoactivateand
deactivatetheaudiblealarmforindividualerrors.
PresstheEnterbuttontoaccessindividualerroralarm
settings.
Note:Notallaudiblealarmscanbedeactivated.
g030225
Figure31
1.Alarms3.AudibleAlerts
2.Activate/Deactivate4.Enter
Thehighlightederrornameindicatesthattheaudible
alarmisactive.Pressingentermodiesthestatusof
theaudiblealarmtoOnorOff.
g038366
Figure32
1.Alarms4.Toggle
2.ClutchOvercurrent5.Enter
3.FuelLow
Youcandeactivatetheaudiblewarningforthe
followingerrors:
•ServiceAirFilter
•ServiceEngineOil
•ServiceTransmissionOil
•ServiceGearBoxOil(asapplicable)
•FuelLow
•ClutchOvercurrent
•ClutchResetRequired
•EngineErrorCodes
•SystemOvervoltage>16VDC
•SystemUndervoltage<9VDC
•SystemVoltageLow
EngineSettings
Thisscreenallowsyoutoadjusttheenginespeed
attheMaximum,Efcient,andLowsetpointsfor
bothtransport(clutchdisengaged)andmow(clutch
engaged)modesin50rpmincrements.
g030227
Figure33
1.EngineSettings2.AdjustEngineSpeeds
Pressingtheuparrowincreasestheenginespeed
whilepressingthedownarrowdecreasestheengine
speed.PressingtheEnterbuttonconrmsthe
speedandautomaticallymovesyoutothenext
screen/enginespeedsetpoint.
g030228
Figure34
1.EngineSettings4.Uparrow—Increase
2.SetLowMowSpeed5.Enter
3.Enginespeedinrpm(e.g.
3600)
6.Downarrow—Decrease
Thesystemdoesnotallowthefollowingtooccur:
•Theefcientspeedcannotbesethigherthanthe
maximumspeed.
•Thelowspeedcannotbesethigherthanthe
efcientspeed.
Note:Youcansetthemaximumspeedequaltothe
efcientmowspeedtousetheefcientmodewhile
mowing.
11

CalibrateEngineSettings
Thisscreenallowsthecalibrationoftheactualengine
speedtomatchthecommandedenginespeed.
Theenterbuttonblacksoutifthebladesarenot
disengaged,theparkingbrakeisnotengaged,and
themotion-controlleversarenotintheNEUTRAL-LOCK
position.Oncetheyare,presstheEnterbuttonto
startthecalibrationprocess.
g030234
Figure35
1.CalibrateEngineSettings2.StartCalibration
Ananimatedhourglassappearsindicatingthe
calibrationisinprocess.
g030235
Figure36
1.CalibrateEngineSpeed3.Processing
2.Calibrating
Oncethecalibrationiscomplete,youcantoggleback
totheprimaryCalibrateEngineSpeedscreen.
g030237
Figure37
1.CalibrationEngineSpeed3.Togglebetweenscreens
2.CalibrationComplete
FactoryDefaults
Thisscreenallowsyoutoresetsystemsettingsback
tothefactorydefaultsettings.PressingtheEnter
buttonbringsupconrmationscreen;pressY(yes)to
resetorN(no)tocancel.
Note:Resettingthesystemreturnstheenginespeed
settingsandalarmsettingsbacktothefactorydefault
settings.
g030238
Figure38
1.FactoryDefaults2.Reset
Whentheexitscreenappears,presstheenterbutton
togobacktotheMenuSelectionscreen.
ReturningtotheDefault
Screen(Engine-Onor
Engine-Off)
Thereare3waystoreturntothedefaultscreen:
•Pressthepreviousornextarrowkeysuntilthe
ExitscreenappearsthenpresstheEnterbuttonto
returntotheMenuSelectionscreen.
•TurntheignitionkeytotheOFFpositionand
eitherrestarttheengineorturnthekeytotheON
position.
•Pressandholdthe2outsidebuttons.
SettingEngineSpeeds
Atstartup,thesystemdefaultstotheLowengine
speed.Theiconontheinformationscreenis
highlighted.
•PressthebuttonbelowtheEfcientSpeedMode
icontoincreasetheenginespeedtotheEfcient
enginespeed.
TheEfcientSpeedModeiconishighlighted.
•PressthebuttonbelowtheMaximumSpeedMode
icontoincreasetheenginespeedtothemaximum
enginespeed.
TheMaximumSpeedModeiconishighlighted.
Note:IfyouengagethePTOswitchatanyspeed
setting,theenginespeedncreasestothemowspeed.
12

Adjustingthe
Electronically-Controlled
LowModeSpeed
Adjustment
Whenoperatinginlowmowmode,pressandholdthe
LowSpeedModebuttonreducetheenginespeed
(minimumof2250rpm).PresstheLowSpeedMode
buttonagaintoreturntheenginetothedefaultsetting.
AutoIdleDownMode
Iftheoperatorleavestheseatandthesafetyinterlocks
allowtheenginetoremainrunning,thesystementers
theautoidlemodeandautomaticallysettheengine
speedtothelowtransportspeed.Whenyoureturn
totheseat,thesystemautomaticallyreturnstothe
previouslyselectedenginespeedmode.Ifyouselect
anotherenginespeedsetting,thesystemexitsthe
autoidlemodeandtheenginerunsattheselected
speed.
ErrorMessages
Ifanerroroccurs,amessagedisplaysinplaceofthe
enginetemperature,enginespeed,andfuellevel.In
additiontodisplayingthefaultastext,thesystem
turnstheLEDredandsoundstheaudiblealarm.
•Thesystemiscapableofdisplayingthefollowing
errors:
–ServiceAirFilter:Anairlterisrequired.
–ServiceEngineOil:Engineoilmaintenance
isrequired.
–ServiceTransmissionOil:Transmissionoil
maintenanceisrequired.
–ServiceDeckGearboxOil(asapplicable):
Deckgearboxoilmaintenancerequired.
–LowOilPressure:Lowengine-oilpressureis
detected.
–FuelLow:Thefuellevelislow.
–EngineOverTemperature:Theengineover
temperatureisdetected.
–SystemOvervoltage>16VDC:Thesystem
voltageistoohigh(greaterthan16V).
–SystemUndervoltage<9VDC:Thesystem
voltageistoolow(greaterthan9V).
–ClutchOvercurrent:Thecuttingclutch
currentistoohigh.
–ClutchResetRequired:ThePTOswitch
mustbeturnedoffandtoactivatethePTO.
–EngineErrorCodes:Thesystemdisplays
engineerrorcodesprovidedbytheengine
manufacturer.
–ClutchOutputFailure:Theclutchoutputis
openorshorted.
–SystemVoltageLow:Thevoltageistoolow
(lessthan12.3V).
–EngineCommunicationError:The
communicationbetweenengineandmodule
waslost.
–ModuleCommunicationError:The
ommunicationbetweentheLDUandMCU
moduleswaslost.
•Youcanacknowledgeandsilencesomeofthe
errorslistedabove.Movethemotion-control
leverstotheNEUTRAL-LOCKpositionandpress
andholdthemiddlebutton.
Acknowledginganerrorremovestheerror
messagefromtheenginetemperature,engine
speed,orfuelleveliconareaandsilencethe
audiblealarm.However,theerrorcontinues
todisplayontheactiveerrorscreeninthe
MaintenanceandServiceMenuandthestatus
LEDcontinuestobeilluminatedred.
–Thefollowingerrorsemitaslowchirpingsound
thatyoucanacknowledgeandsilence:
◊ServiceEngineOil
◊ServiceTransmissionOil
◊FuelLow
◊ClutchOvercurrent
◊ClutchResetRequired
◊EngineErrorCodes
◊Anti-StallActive
◊ServiceAirFilter
◊ServiceDeckGearBox
–Thefollowingerrorsemitafastchirpingsound
andcanbeacknowledgedandsilenced:
◊SystemOvervoltage>16VDC
◊SystemUndervoltage<9VDC
–Thefollowingerrorcodesemitafastchirping
soundandcannotbeacknowledgedor
silenced.
◊LowOilPressure
◊EngineOverTemperature
◊EngineCommunicationError
◊ModuleCommunicationError
◊ClutchOutputFailure
◊EngineLimpModeActive
•Inordertoprotectthesystemcomponentsfrom
exceedingthresholdlimits,thesystemisdesigned
tolimittheenginespeedand/ordisengagethe
13

clutch,whichallowsthemachinetobedrivenonto
atrailerorreturnedtoaservicearea.
Therearethefollowingerrors:
1.ClutchOvercurrent
Ifanovercurrenteventoccurs,thesystem
limitstheenginespeedtotheEfcient
TransportModespeedandplacesthe
machineinSafeTransportMode.Safe
TransportModelimitstheenginespeed,
locksoutthePTO,anddisengagesthe
clutch;aClutchOvercurrenterrormessage
willdisplay.CyclingthekeyswitchtotheOFF
andthentotheONpositionclearsthefault.
2.SystemOvervoltage>16VDC
Ifthevoltageexceeds16V,thesystemwill
disengagetheclutchanddisplaysaSystem
Overvoltage>16VDCerrormessage.
3.SystemUndervoltage<9VDC
Ifthevoltageislessthan9V,thesystem
willnotallowclutchengagementanddisplay
theerrorSystemUndervoltage<9VDC.If
theclutchwasengagedbeforetheerror
occurred,thesystemallowstheclutchto
remainengaged;however,lowvoltagemay
causetheclutchtodisengageitself.
4.LowOilPressure
Iflowengine-oilpressureisdetected,the
systemlimitsenginespeedtotheEfcient
TransportModespeedandplacesthe
machineinSafeTransportMode.Safe
TransportModelimitstheenginespeed,
locksoutthePTO,anddisengagesthe
clutch;aLowOilPressuremessagewill
display.CyclingthekeyswitchtotheOFF
andthentotheONpositionclearsthefault.
5.EngineOverTemperature
Whentheenginebeginstooverheat,the
systemashestheenginetemperature
bargraphandchirpstheaudiblealarm.
Ifthetemperaturerisesabovetheupper
limit,thesystemlimitstheenginespeed
totheEfcientTransportModespeedand
placesthemachineinSafeTransportMode.
SafeTransportModelimitstheengine
speed,locksoutthePTO,anddisengages
theclutch;anEngineOverT emperature
messagedisplays.Thefaultclearsoncethe
temperaturefallsbelowasafelimit.
14

Troubleshooting
SystemErrorMessageStatusLEDSystemActionsIssueDescriptionRecommendedCorrectiveAction
ServicetheEngineOilBlinkRedEngineoilserviceis
due.
Replacetheengineoilandlter.
Followtheresetprocedure;referto
EngineOil(page10).
Servicethe
TransmissionOilBlinkRedTransmissionoil
serviceisdue.
Replacethetransmissionoiland
lter(s).Followtheresetprocedure;
refertoHydraulicTransOil(page10).
LowOilPressureBlinkRed
SafeTransport
Mode—enginelimited
toEfcientmodeandthe
PTOisdisengaged.
Engineoilpressureis
belowlimit.
Cyclethekeyswitchtoclearthe
fault.Checktheoillevel.Contactan
AuthorizedServiceDealer.
Green
Singlealarmchirpand
temperaturedisplay
ashes.
Enginetemperatureis
high.
Checktheoillevel.Cleandebrisfrom
theengine.Inspecttheenginefan.
ContactanAuthorizedServiceDealer.
EngineOver
TemperatureBlinkRed
SafeTransport
Mode—enginelimited
toEfcientmodeandthe
PTOisdisengaged.
Enginetemperature
abovelimit.
Checktheoillevel.Cleandebrisfrom
theengine.Inspecttheenginefan.
ContactanAuthorizedServiceDealer.
FuelLowBlinkRedFuellevellow.Checkthefuellevelandaddfuelas
necessary.
SystemOvervoltage
>16VDCBlinkRed
Disallowclutch
engagement/Disengage
theclutch.
Systemvoltage
excessive/above
16V.
Checkthebatteryandengine
chargingsystem.Contactan
AuthorizedServiceDealer.
SystemVoltageLowBlinkRedSystemvoltagebelow
12.3V.
Checkthebatteryandengine
chargingsystem.Contactan
AuthorizedServiceDealer.
SystemUnder
voltage<9VDCBlinkRed
Disallowclutch
engagement/Disengage
clutch.
Systemvoltagebelow
lowerlimitof9V.
Checkthebatteryandengine
chargingsystem.Contactan
AuthorizedServiceDealer.
ClutchOvercurrentBlinkRed
SafeTransport
Mode—enginelimited
toEfcientmodeandthe
PTOisdisengaged.
Clutchcurrentis
abovelimit.
Cyclethekeyswitchtoclearthe
fault.CheckthePTOclutchcondition
andtherelatedwiring.Contactan
AuthorizedServiceDealer.
ClutchResetRequiredAlternating
green/orange
ThePTOswitchis
intheup/engaged
positionandthe
modulehaslatched
theclutchoutputOff.
CyclethePTOswitchtotheOFF
positionandbacktotheONposition
toengagetheclutch.
ClutchOutputFaultBlinkRedClutchoutputshortor
open.
IftheclutchisstuckintheONposition,
discontinueuseandcontactan
AuthorizedServiceDealer.Check
theclutchconnectionandassociated
wiringforanopencircuit.
EngineMILErrorsBlinkRedEngineECUhas
detectedafault.
Seetheengineowner’smanualforthe
errordescriptionandtroubleshooting
information.
15

SystemErrorMessageStatusLEDSystemActionsIssueDescriptionRecommendedCorrectiveAction
Engine
CommunicationErrorBlinkRed
Communication
betweenthemodule
andtheengineECU
hasbeenlost.
Checktheelectricalconnectionsat
themodule,interconnectbetween
theenginewireharness,andchassis
harness.Checktheconnections
attheengineECU.Contactan
AuthorizedServiceDealer.
Module
CommunicationErrorBlinkRed
SafeTransport
Mode—enginelimited
toEfcientmodeandthe
PTOisdisengaged.
Communication
betweentheLDU
moduleandMCU
modulehasbeenlost.
Checktheelectricalconnectionsat
theLDUandMCUmodule.
16