Navistar MaxxForce 10 Diagnostic Manual

DIAGNOSTICMANUAL
9.5.SYMPTOM4(HEAVYDUTY):SPN3719ANDOTHERACTIVEFAULTCODES
NOTE–Beforebeginningthefollowingstep-baseddiagnostics,performallvehicleoperationalchecks
page80.
Step
ActionDecision
1
UsingElectronicServiceT ool(EST)withServiceMaxx™
software,checkDiagnosticTroubleCode(DTC)listfor
activefaultcode(s)otherthanSPN3719(DPFsootload).
Arefaultcode(s)otherthanSPN3719active?
Yes:Repairotheractivefaultcode(s)
(SeeElectronicControlSystems
DiagnosticsinEngineDiagnostic
Manual).Afterrepairsarecomplete,go
tostep2.
No:Gotostep2
Step
ActionDecision
2
DoOnboardFilterCleanlinessT est(OBFCT)toclearSPN
3719activefaultcode.UsingElectronicServiceTool
(EST)withServiceMaxx™software,gotoSessions>
Performanceandselecttherecordsnapshoticonfromthe
toolbar.ThengotoTests>KOERAftertreatmentT ests>
OnboardFilterCleanlinessT est.
IsSPN3719stillactiveafterOBFCTiscomplete?
Yes:Gotostep3
No:Gotostep7
Step
ActionDecision
3
DetermineifDieselParticulateFilter(DPF),Pre-Diesel
OxidationCatalyst(PDOC),andDieselOxidationCatalyst
(DOC)arecontaminated.RemovetheDPF ,PDOC,and
DOC(seeExhaustSystemServiceManual),andcheckfor
signsoflubeoilandcoolantcontamination.
NOTE–Ablackstainingintheexhausttailpipecan
occuronapplicationsthatexperiencehighidletimes.
ThisisnormalandtheDPFshouldNOTbereplaced.
AretheDPF ,PDOC,orDOCcontaminated?
Yes:Gotostep4
No:Gotostep5
Step
ActionDecision
4
DetermineifDPF ,DOC,andPDOCarereusableseeDPF
andDOCreuseguidelinespage159.
BasedonDPFandDOCRe-UseGuidelines,aretheDPF ,
DOC,andPDOCreusable?
Yes:Gotostep6
No:Replacefailedcomponent(s).After
repairsarecomplete,gotostep6
104
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Navistar MaxxForce 10 Specifications

General

Brand	Navistar
Model	MaxxForce 10
Category	Engine
Language	English