DIAGNOSTICMANUAL
NOTE–Anyactiveaftertreatmentsystemfaultcode(s)mayinhibitaRegen.Diagnoseactivefault
code(s),otherthanSPN3719(DPFSootLoad),beforecontinuing(seeElectronicControlSystems
Diagnostics”inEngineDiagnosticManual).
Table182CheckActiveRegenInhibitors
1.TurnignitionswitchtoONposition,engineOFF.
2.UsingServiceMaxx™software,loadtheAftertreatmentsession.
3.Startengineandrunvehiclespeedabove5mph.
4.VerifyalllistedinhibitorsaredisplayingNotInhibited.
Check
ExpectedResults
Comment
AFTRegenInhibit
Status
NotInhibited
Ifinhibited,correctthecause.CheckswitchesandanyDTC
thatmaybecausingtheRegeninhibit.
RedStopAlertLampOffIfOn,Regencan'tberun.Gotoappropriateaftertreatment
systemdiagnosticssectioninthismanual.
RegenInhibitSwitchOffIfOn,turnswitchOff.IfswitchdoesnotturnOff,then
diagnosecircuitfault.
PTOEnableSwitchOffIfOn,turnswitchOff.IfswitchdoesnotturnOff,then
diagnosecircuitfault.
PTOSwitchOffIfOn,turnswitchOff.IfswitchdoesnotturnOff,then
diagnosecircuitfault.
IfnoinhibitorsareactiveandRegenisneeded,gotoParkedRegenChecks(page155).
153
https://www.truck-manuals.net/
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