Toro Reelmaster 5010- H - Fault 19: Engine Coolant Temp Sensor out of Range

Fault19:EngineCoolantTempSensorOut
ofRange
InfoCenterDisplay:
_____ FAULT#19 _____
SensorHI/LO
FaultDescription
Theenginecoolanttemperaturesensor(alsocalledthetemperaturesender)iseitheropenorshorted.Itsoutput
isoutsidethenormalfunctionalrange.
CircuitDescription
Theenginecoolanttemperaturesensor(temperaturesender)isasubmersiblethermistorwhichsendsan
analogsignalof0to5VdctotheTEC-5002.
Note:Theresistancemeasuredwithinthetemperaturesenderdecreasesascoolanttemperaturerises.
ConditionsforSettingtheFault
TheTEC-5002receivestheminimumormaximumreadingfromtheenginecoolanttemperaturesensor
(temperaturesender).
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page21).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page22)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:Testthetemperaturesenderwiring.
1.Locatethetemperaturesendernearthealternator,onthecoolantthermostathousingattachedtothe
enginecylinderhead(Figure49).
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