Toro Greensmaster TriFlex 3400 - Fault 34: 48 Volt Keyswitch Undervolt - Reel Motor 2

Fault34:48VoltKeyswitchUndervolt–
ReelMotor2
InfoCenterDisplay:
____FAULT#34____
248V
KEYSWITCHUNDER
V
Important:Forthisfault,theterm“keyswitch”referstothe48Vlogicpowercircuit,nottothe
ignitionswitch.
FaultDescription
Thisfaultisreportedwhenthe48Vsystemvoltagedropsbelow32Vatcuttingunit2.
CircuitDescription
Eachcuttingunithasanelectricreelmotorthatcontainsaninternalcontroller.Theinternalcontrollermeasures
asteady48Vsignal,calledlogicpower.
Ifonly1cuttingreelmotorisreportingakeyswitchundervoltfault,theproblemismorelikelytobewiththe48V
logicpowerconnectiontothatcuttingreelmotor.
Ifmorethan1cuttingreelmotorisreportingakeyswitchundervoltfault,theproblemismorelikelytobe
withthe48Vbusvoltage.
Ifmorethanonedeviceisreportingthisfault,checkthebatteryvoltagewiththeengineOFF,andagainwith
theenginerunning.
IfthebatteryvoltageisgoodwithengineOFFbutnotON,checktheStarter/Generator.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page19).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page21)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:ChecktheInfoCenterfortheReelsEnableindication.
TheReelsEnableindicationontheInfoCenterDiagnosticsscreenidentieswhethertheTEC-5001outputexists
toenergizethe48VLogicrelayThisrelayprovides48Vlogicpowertothereelmotorsandstarter/generator.
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