Navistar MaxxForce DT - Page 19

DIAGNOSTICMANUAL
Step
ActionDecision
8
RunDSISystemDe-AerationProceduretwice,topurgetheDownStream
Injection(DSI)systemofair.UsingEST,gotoProcedures>KOER
AftertreatmentProcedures>DSISystemDe-Aeration.
Gotostep9
Step
ActionDecision
9
UsingEST ,checkDiagnosticTroubleCode(DTC)listforanyfaultcode(s)
thatmayhavebecomeactiveduringOBFCT .
DoesDTClistcontainanyactivefaultcode(s)?
Yes:Repairactive
faultcode(s)
(SeeElectronic
ControlSystems
Diagnosticsin
EngineDiagnostic
Manual).After
repairsare
complete,goto
step10.
No:Gotostep10
Step
ActionDecision
10
Verifyexhaustgastemperaturesarewithinspecication.
1.UsingElectronicServiceT ool(EST)withServiceMaxx™
software,gotoTests>KOERAftertreatmentT ests>Onboard
FilterCleanlinessT est(OBFCT).
2.GotoSessions>Performanceandselecttherecordsnapshot
iconfromthetoolbar.
WhenOBFCTiscomplete,stoprecording.Usetheplaybackfeatureand
graphthefollowingsignalvaluesfromOBFCT :
SignalValues:
•DieselOxidationCatalystInletT emperature(DOCIT)
•DieselParticulateFilterInletTemperature(DPFIT)
•DieselParticulateFilterOutletT emperature(DPFOT)
•DPFSootLoad
ComparesnapshottoGraph5and6page57.
Whichgraphdoessnapshotmostcloselymatch?
Graph5:Goto
step11
Graph6:Go
toPerformance
Diagnostics
sectioninEngine
Diagnostic
Manual.
15
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