Toro 74060, 74064, 74072, 74074, 74096 Software Guide

FormNo.3418-249RevA

HorizonControlModule

ForZMasterLawnMowers

ModelNo.74060—SerialNo.400000000andUp

ModelNo.74064—SerialNo.400000000andUp

ModelNo.74072—SerialNo.400000000andUp

ModelNo.74074—SerialNo.400000000andUp

ModelNo.74096—SerialNo.400000000andUp

SoftwareGuide

WARNING

CALIFORNIA

Proposition65Warning

ThisproductcontainsachemicalorchemicalsknowntotheStateofCalifornia

tocausecancer,birthdefects,orreproductiveharm.

Readthisinformationcarefullytolearnhowtooperateandmaintainyourproductproperlyandtoavoidinjury
andproductdamage.Youareresponsibleforoperatingtheproductproperlyandsafely.ReadyourOperator’s
Manualformoreinformation.

ScreenIcons

Theinformationscreenusesthefollowingicons:

GaugeandMeters

AdvancedSettings

MaintenanceandService

Transmission-OilMaintenance

Engine-OilTemperature

LowEngineSpeed

Processing

BatteryV oltage

EngineHours

©2017—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420

Registeratwww.T oro.com.

OriginalInstructions(EN)

PrintedintheUSA

AllRightsReserved

*3418-249*A

FuelLevel

PTO

Engine-OilMaintenance

No

*Locatedonbottomrowofsome

menuscreens

Cancel/Exit

ToggleBetweenScreens

ParkingBrake

NeutralLock

*LocatedintoprowofInformationScreen

OperatorPresenceControl(OPC)

MaxEngineSpeed

Yes

Decrease

Increase

Play/Start

Enter/Return

Previous

Next

Reset

EfcientEngineSpeed

Pause/Stop

ErrorWarning

2

Hydraulic-FluidTemperature

EngineDieselParticulateFilter

EngineGlowPlugsActive

EngineDPFRegeneration

Inactive/Failed/Interrupted

RecommendedEngineCooldownTime

ProductOverview

EngineDPFSootPercentage

Gearbox-OilMaintenance

ShutOffEngine

Figure1

1.LDU(LogicDisplayUnit)

2.Deck-liftswitch4.PTOengagementswitch

3.Keyswitch

g225792

g228164

Figure2

LDU(LogicDisplayUnit)

1.Screen

2.LEDstatuslight

3.Buttons

3

Screen

EngineScreens

Thescreendisplaysiconsandinformationrelativeto
machineoperationandisbacklitforviewinginlowlight
situations.Thescreenislocatedabovethebuttons.

RefertotheScreenIcons(page1)sectionforicon
descriptions.

LEDStatusLight

TheLEDstatuslightismulti-coloredtoindicatethe
systemstatusandislocatedontherightsideofthe
panel.Duringstartup,theLEDilluminatesredto
orangetogreentoverifyfunctionality.

•SolidGreen:indicatesnormaloperatingactivity

•BlinkingRed:indicatesthatafaultisactive

•BlinkingGreenandOrange:indicatesthata

clutchresetisrequired

Buttons

Themulti-functionalbuttonsarelocatedatthebottom
ofthepanel.Theiconsdisplayedontheinformation
screenabovethebuttonsindicatethecurrentfunction.
Thebuttonsallowyoutoselecttheenginespeedand
navigatethroughsystemmenus.

Engine-OffScreen

Whenthekeyisonwithouttheenginerunning,the
Engine-Offscreendisplays(Figure3).

g216582

Figure3

1.Thescreentogglesbetweenhoursremaininguntilthe
nextrequiredtransmission-oilmaintenanceandgearbox
maintenance(ifequipped).

2.Batteryvoltagedisplay

3.Safetyinterlockstatusindicators

4.Enginedieselparticulatelter(DPF)sootpercentage—The
levelisshownonabardisplay .Thebargraphllsinas
thesootpercentageincreases.Ahighsootpercentage
indicatesthataDPFregenerationmaybeneeded.

5.Thescreentogglesbetweenhoursremaininguntil
engine-oilmaintenanceandthenon-resettableenginehour
counter.

Alarm

Ifanerroroccurs,anerrormessagedisplays,theLED
turnsred,andthealarmsoundsaudiblyasfollows:

•Afastchirpsoundindicatescriticalerrors.

•Aslowchirpingsoundindicateslesscriticalerrors,

suchasrequiredmaintenanceorserviceintervals.

Note:Duringstartup,thealarmsoundsbrieyto

verifyfunctionality.

InformationScreens

Themaininformationscreensareasfollows:

•StartupScreen(page4)

•Engine-OffScreen(page4)

•Engine-OnScreen(page4)

StartupScreen

Duringstartup,thescreendisplaysastartupgraphic
for1second,soundsthealarm,andilluminatesthe
LED,changingfromredtoorangetogreen.

Engine-OnScreen

Whentheengineisrunning,theEngine-Onscreen
displays(Figure4).

Figure4

1.Enginespeedmode

2.Hydraulic-uid
temperature

3.Enginetemperature6.Recommendedengine

4.Safetyinterlockstatus
indicators

5.Enginespeed

cooldowntime

g216584

4

EngineSpeedMode

3modesareavailable:LOW,EFFICIENT,andMAXIMUM.

•LOW:Lowtransportspeed/Lowidleforreducing

deckpackinginwetmowingconditions.

•EFFICIENT:Mediumtransportspeedandmaximum

fueleconomyandnormalmowingconditions.

•MAXIMUM:Maximumtransportspeed/Highidlefor

extrememowingconditions.

Thepanelilluminatesshowingthecurrentengine
speedmode(LowisselectedinFigure4).

movestowardthebottomofthedisplayastheengine
coolsandisemptywhenitissafetoshutoffthe
engine.Ifyoushutofftheenginebeforethecooldown
periodhasexpired,afaultisloggedinthehistorical
faultlog.

EngineDieselParticulate Filter(DPF)Regeneration Screens

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
appearswhenthefuelleveldropstoapproximately

3.8L(1USgallon)remaininginthetank.

RecommendedEngineCooldownTime

CAUTION

Duringregeneration,thedieselparticulate
lterbecomesextremelyhotandcancause
seriousburns.

Keepyourbodyandhandsawayfromthe
engineduringregeneration.

Thedieselparticulatelter(DPF)removesparticulate
matterfromtheexhaustandpreventsitfrombeing
dischargedintotheair.Astheparticulatescollect
inthelter,theengineperformsaregenerationto
preventclogginganddecreasedengineperformance.
Mostregenerationsareperformedinthebackground
anddonotimpactoperation.Thereare4modes
formaintenance:passiveregeneration,auto
regeneration,stationaryregeneration,andrecovery
regeneration.

1.PassiveRegeneration

Thisistheprimarymoderegenerationthat
occursautomaticallyduringnormaloperation.
Whentheengineisrunningatnormalloads,the
exhausttemperaturekeepstheDPFabovethe
minimumtemperatureforregenerationsothat
normalparticulatematter(PM)accumulationin
theDPFisexpected.

2.AutoRegeneration

IftheengineECUsensesthattheDPF
backpressurehasincreasedpastanacceptable
threshold,anautoregenerationwilloccur.
Duringtheautoregeneration,theintakethrottle
valvelimitstheairowintotheenginewhile
theinjectorsaddadditionalfuel.Thisprocess
increasestheDPFtemperature,whichallows
accumulatedparticulatetoburnoff.Theauto
regenerationiscompletedwhenneeded.The
machinecancontinuetobeusedduringanauto
regeneration.

Thefollowingguresshowthescreensofthe
autoregenerationprocess.

Therecommendedtimetoidletheenginebefore
itshutsdownisshownonabardisplay .Thelevel

5

Figure5

g216606

Figure7

g216638

1.StartofAutoRegen

WhentheengineECUdeterminesthatanauto
regenerationisneeded,thealarmchirpsandthe
moduledisplaystheStartofAutoRegenscreen
witha60-secondbargraphtimer(Figure5).
Oncethetimerexpires,theautoregeneration
processbegins.

Note:Noactionisrequiredandyoucan

continuetousethemachineduringtheauto
regenerationprocess.

CAUTION

Duringtheautoregenerationprocess,
theexhausttemperaturesriseandcould
igniteammablematerials.

Usecautionifyouoperatethemachine
aroundammablematerials.

Ifanautoregenerationisneededbutoperating
conditionsdonotallowtheprocesstobegin,
themodulepromptsyoutoincreasetheengine
speedand/orload.

1.AutoRegenActive

Iftheregenerationisinterrupted,thefollowing
screendisplays:

g216681

Figure8

1.RegenInterrupted

Note:Ifyoushutofftheengineduringthe

regenerationprocess,theprocessresumes
whenyoustarttheengineanditreachesthe
requiredtemperaturelevel.

3.StationaryRegeneration

Overtime,sootaccumulatesintheDPFanda
passiveorautoregenerationisnotsufcient
tounclogthelter.Duringthestationary
regeneration,theengineECUcontrolsengine
speed,load,andair/fuelmixturetoperforma
controlledburnoftheparticulatecollectedinthe
DPF.

Figure6

1.IncreaseRPM/Load

Whentheprocessbegins,thescreenchanges
toindicatethattheautoregenerationprocess
isactive.

Ifastationaryregenerationisrequired,it
mayindicatethattheenginehasbeenidling
excessivelyornotrununderasufcientload.If

g216605

multiplesuccessiveregenerationsarerequired,
itmayindicatethattheDPFwillrequireservice
soon,thatanengineproblemexists(e.g.,
incorrectenginefueloroil)orthataDPF
pressuresensorisfailing.

Important:Astationaryregenerationcan

beinitiatedbytheengineECUorbyyou,
theuser.YoucanmonitortheDPFsoot
percentageontheEngine-OffScreenorin
theMaintenanceandServiceMenu.Ifthe
DPFSootpercentageishigh,youmayelect
toinitiateamanualstationaryregeneration
ontheDPFSootPercentagescreeninthe

6