Navistar MaxxForce 15 - Entry Conditions

DIAGNOSTICMANUAL
15.2.ENTRYCONDITIONS
Overview
ARegenmaynotoccurduetoanyofthefollowingconditions:
•Inhibitorsdonotmatchtheirexpectedvalue
•Entryconditionshavenotbeenmet
•Activefaultcode(s)
ToviewthestatusofRegeninhibitors,useanElectronicServiceT ool(EST)withServiceMaxx™software,go
toT ests>KOERAftertreatmentT ests>OnboardFilterCleanlinessT est.SelecttheInhibitorstab.
NOTE–Anyactiveaftertreatmentsystemfaultcode(s)mayinhibitaRegen.Diagnoseactivefaultcode(s)
beforecontinuing(seeElectronicControlSystemsDiagnostics”inEngineDiagnosticManual)
Table185EntryConditionsforanActiveRegen
WhentheECMdeterminesthesootlevelthresholdisreached,thesystemtriggersDPFRegen.
NOTE–ShorttripsorstopandgodrivingcouldpreventasuccessfulRegen.
ThefollowingconditionsarerequiredforanActiveRegen:
•DPFStatussignaldisplaying:RegenNeeded
•Redstopenginelampnoton
•EngineCoolantTemperatureisaboveoratleast170ºF(75ºC)
•InhibitingDTCsmustnotbeactive
•RegenInhibitswitchnotactive(switchmustbeoff)
•PTOnotactive(switchmustbeoff)
•ExhaustT emperaturesensorsbelowsafethresholds:
•DOCITbelow932°F(500°C)
•DOCOTbelow120°F(650°C)
•DPFOTbelow1382°F(750°C)
IfDPFStatusdisplaysRegenneededandvehicleisunabletoperformanActiveRegen,gotoappropriate
aftertreatmentsystemdiagnosticssectioninthismanual.
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