Navistar MaxxForce DT - Section 2: Requirements for Fuel, Oil, and Coolant; Fuel Requirements and Blends

DIAGNOSTICMANUAL
Step
ActionDecision
3
UsingElectronicServiceTool(EST)withServiceMaxx™software,
ResetDPFsootload.SelectSessions>Programming>CDPF
ResetRequestsetvaluetoyes,thenselectProgramEngine.
Whenprogrammingcompletes,runengineatwideopenthrottle
(WOT)for10minutes.Ifahighsootloadexists,youwillseeit
after10minutes;Ifthehighsootloadisfalse,theDPFsootload
willberecalculatedtoshowthetruesootload.
Whichfaultcodeforsootloadisactive?
SPN3719FMI16,goto
Step4
SPN3719FMI15,goto
Step5
SPN3719or3936FMI0,
gotoStep7
Nocodes,gotoStep11
Step
ActionDecision
4
DothreeOnboardFilterCleanlinessT ests(OBFCT)todecrease
sootloadofDieselParticulateFilter(DPF).UsingEST,gotoTests
>KOERAftertreatmentT ests>OnboardFilterCleanlinessTest.
AfterOBFCT sarecomplete,checkDTClisttodetermineifSPN
3719FMI16droppedoneFMIleveltoSPN3719FMI15.
DidSPN3719FMI16droponeFMIleveltoSPN3719FMI15?
Yes:Gotostep5
No:Gotostep6
Step
ActionDecision
5
DothreeOnboardFilterCleanlinessT ests(OBFCT)toclearSPN
3719FMI15.UsingEST,gotoT ests>KOERAftertreatment
Tests>OnboardFilterCleanlinessT est.AfterOBFCTsare
complete,checkDTClisttodetermineifSPN3719FMI15is
stillactive.
IsSPN3719FMI15stillactive?
Yes:Gotostep7
No:Gotostep6
25
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