Toro Greensmaster TriFlex 3400 - Fault 89: 48 V Bus Overvolt - Starter;Generator

Fault89:48VBusOvervolt–
Starter/Generator
InfoCenterDisplay:
_____FAULT#89____
-48VPOWER
BUSOVERV
FaultDescription
Thisfaultisreportedwhenvoltagegreaterthan65Visdetectedbythestarter/generator(S/G)controller.The
presenceofthisfaultwilldisablethePTOandthegenerator.
CircuitDescription
TheS/Gcontrollermonitorsthe48Vbusvoltagelevel.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page19).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page21)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:Withtheengineshutoff,checkthevoltageinthe48Vbattery
system.
1.Unplugthe48Vpowerdisconnectontheleftsideofthemachine
2.T estfor45–55voltsacrosstheplugwiththeT-handleattached.
Pass
Thereisbetween45–55voltsofbatterypoweravailable.GotoStep4.
Fail
Thereisnot45voltsofbatterypoweravailable.GotoStep3.
Step3:Testeachindividualbatteryinthe48Vbatterygroup.
1.AccomplishtheBatteryPackRemovalproceduredetailedinChapter6oftheGreensmasterTriFlex
3320/3420ServiceManual.
2.T esteachofthe12Vbatteries.Thereadingsshouldbe11.5to13.5V.
3.Ifanyofthe12Vbatteriesfailthetest,replaceallofthe12Vbatteries.
4.Cleanandinspectallofthecablesandhardware.Replaceanydamagedorcorrodedcomponents.
5.AccomplishthebatterypackinstallationproceduredetailedinChapter6oftheGreensmasterTriFlex
3320/3420ServiceManual.
6.T estfor45–55voltsacrossthe48Vpowerdisconnectplug.
222