Navistar MaxxForce 7

SECTION4–ENGINEOPERATION
Operation(cont.)
ENGINEWARNINGPROTECTIONSYSTEM(EWPS)(cont.)
•EOT-EngineOilT emperatureoverheatwarning
•EOP-LowEngineOilPressurewarning
•EFT-EngineFuelTemperatureoverheatwarning
•ECL-LowEngineCoolantLevelwarning
NOTE:Theprotectionmodeisnotofferedforschoolbusesor
emergencyvehicles.
ProtectionMode(optional)
•Theprotectionmodeisanoptionalcalibrationthatcanbe
addedtotheEWPSbyanauthorizedserviceprovider.
Engineshutdownisavailableifcriticalconditionisdetected:
•ECT-EngineCoolantT emperatureoverheatprotection
•EOT-EngineOilTemperatureoverheatprotection
•EOP-LowEngineOilPressureprotection
•EFT-EngineFuelTemperatureoverheatprotection
•ECL-LowEngineCoolantLevelprotection
Warning-Temperatureabovespecicthresholdwillsounda
buzzer,illuminatetheAmberWarningLamp,setaDTC,and
de-ratetheengine.
Critical-T emperatureabovespecicthresholdwillshutdown
theengineandsetaDTC.Theoperatorhas30secondsto
safelypullvehicleofftheroadbeforetheengineshutsoff.
ARedStopLampwillilluminatebeforeengineshutdownis
approaching.TheECMallowstheenginetoberestartedand
runfor30–secondperiods.
EventLog-Thisfeaturelogsoccurrencesoftheeventaccording
toenginehoursandodometerreadings,forbothStandard
warningandoptionalProtectionmodes.
HD-OBDOVERVIEW
TheHD-OBDsystemusesmanyindividualpre-programmed
“monitors”toensurethevehicleismeetingemissionsstandards.
AnHD-OBDmonitorisastrategytoevaluatetheperformance
ofanemissionsrelatedsystemorcomponent.Allmonitors
aredesignedforexecutioninaprescribedfrequency;some
monitorsruncontinuously,whilesomerunaspecicratio
againstthenumberofdrivecycles.
Theoperatorwillbealertedtoemissionsorothersystem
problemswhentheMalfunctionIndicatorLamp(MIL)illuminates.
WhentheMILilluminates,bringthevehicleinforserviceat
thenextavailableopportunity.TheHD-OBDsystemdoesnot
changethewaythevehicleshouldbedriven,therecommended
drivingstyle,orthewayyouusethevehicle.
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