Navistar MaxxForce 9

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DIAGNOSTICMANUAL

MAXXFORCE

11,13AND15AFTERTREATMENTSYSTEMDIAGNOSTICS

9.1.STARTDIAGNOSTICSHERE:ENGINEANDAFTERTREATMENTSYSTEM

OPERATIONALCHECKS

Overview

Aproperlyoperatingaftertreatmentsystemrequireslittlemanualinterventionfromtheoperator.Illuminated

warninglampsindicateadrivingorextendedidleoperationthatmaynotallowasuccessfulregenerationofthe

aftertreatmentsystem.Theseilluminatedwarninglampsmayindicateanenginemechanicalorperformance

concern.

ToolsRequired

•ElectronicServiceTool(EST)withServiceMaxx™software

•Interfacecable(RP1210BcompliantsupportingJ1939andJ1708)

NOTE–AfrequentregenconcernmaynotberepairedbyonlyperforminganOnboardFilterCleanliness

Test(OBFCT).Performallstepsinthefollowingdiagnosticprocedureinordertoidentifyrootcause

failure.

NOTE–Repairallactivefaultcode(s)otherthanSPN3719(DPFSootLoad)beforebeginningEngine

andAftertreatmentSystemOperationalChecks.

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