Toro Greensmaster TriFlex 3400 - Fault 46: 48 Volt Keyswitch - Overvoltage; Step 2: Test the battery voltage.

Fault46:48VoltKeyswitch–Overvoltage
InfoCenterDisplay:
____FAULT#46____
48VKEYSWITCH
OVERVSYSTEM
Important:Forthisfault,theterm“keyswitch”referstothe48Vlogicpowercircuit,nottotheignition
keyswitch.
FaultDescription
Thisfaultisreportedwhenall4ofthe48Vdevices(thestarter/generatorandeachofthe3electriccutting
reelmotors)arereportinganovervoltagefault.Theelectriccuttingreelssubmitthisfaultat67.5VandtheSG
reportsthisfaultat65V.Asaresult,thebusvoltagemustbeabove67.5Vforthefaulttooccur
Note:Ifthisfaultisactive,thePTOisdisabledandthegeneratorwillremainofine.
CircuitDescription
Thecuttingreelsrunon48Vpower.TheprimaryTECcontrollermonitorsvoltageinthesystem,whileeach
cuttingunitmonitorsitsownpowerusinganinternalcontroller.Thisfaultmeanstheentire48Vsystemis
reportinghighvoltage.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page19).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page21)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:Testthebatteryvoltage.
RefertoChapter6oftheGreensmasterTriFlex3320/3420ServiceManualandfollowtheBatteryPackService
proceduretotestthebatteries.
Pass
Eachofthe4batteriesallpassedthevoltageandloadtest.GotoStep3.
Fail
Someorallofthebatteriesdidnotpassthevoltageandloadtest.Replaceall4ofthebatteries.Go
toReturningtheMachinetoService(page21)andfollowthestepslisted.
Step3:Inspectthebatteryterminalconnections.
1.Carefullyinspectallofthebatteryconnectionsforevidenceofdamageorcorrosion.
2.Inspecttheconditionofallthebatterycablesforevidenceofdamageorcorrosion.
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