Fault124:InvalidHallState–
Starter/Generator
InfoCenterDisplay:
_____FAULT#124____
-INTERNAL
FaultDescription
ThisfaultisreportedwhentheHalleffectsensorsintheStarter/Generator(S/G)areprovidinganinvalid
reading.Whenthissensorfails,theenginewillnotmaintainasteadyspeed.
Note:Thisfaultwillnotdisablethemachinefunctionality
CircuitDescription
Halleffectsensorsareusedtodetectandmonitorenginespeed.TheStarter/Generatorreportstheengine
speedtothePrimaryTECcontroller.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page19).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page21)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:InspectthewiringconnectionsbetweentheS/Gandthe
controller.
TheS/Ganditscontrollerhavewiringconnectingthem.InspectthewiringbetweentheS/Gcontrollerandthe
motor/generator.
1.RemovetheS/Gassemblyfromthemachine.RefertoChapter6oftheGreensmasterTriFlex3320/3420
ServiceManual.UsetheRemovalprocedureineithertheGeneratorAssembly(Greensmaster3320)
sectionortheGeneratorAssembly(Greensmaster3420),dependingonyourmachine.
2.RemovethecontrollerfromtheS/G.RefertoChapter6oftheGreensmasterTriFlex3320/3420Service
Manual.UsetheapplicablepartsoftheGeneratorAssemblyServicesection.
3.Visuallyinspectthewiringandconnectorsinboththegeneratorassemblyandthecontroller.
Pass
Thewiringbetweenthecontrollerandthestarter/generatorpassedinspection.GotoStep3.
Fail
Thewiringbetweenthecontrollerandthestarter/generatordidnotpassinspection.Onlyrepair
wiringthathasworninsulationorarecessedconnectorpin.Replaceallcomponentsthathave
damaged,burned,orbrokenwiring.GotoReturningtheMachinetoService(page21)andfollow
thestepslisted.
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