Paccar PX-9 - Page 24

OPERATINGINSTRUCTIONS
CheckEngineLamp
The“CheckEngine”lampilluminates
whentheengineneedsserviceatthe
rstavailableopportunity.
The“CheckEngine”lampisamber,
andcanlooklike:
•Thewords“WARNING”or
“CHECKENGINE”spelledout.
•Asymbolofanengine,similarto
thegraphicillustrated.
The“CheckEngine”lampislocated
onthefaceofthetachometerand
illuminateswhenaproblemexists,
butthevehiclecanstillbesafely
driven.Thevehicleshouldbeserviced
tocorrecttheproblem,butthe
situationshouldnotbeconsideredan
emergency.The“CheckEngine”lamp
willactivateforseveralreasons.These
includebutarenotlimitedto:Waterin
fuelandDieselParticulateFilter(DPF)
regenerationrequired.
The“CheckEngine”lampistoashfor
30secondsatkeyONwhenoneofthe
followingoccurs.Thisashingfunction
isreferredtoasthe“maintenance”
lamp.The“maintenance”lampcould
ashforanyofthefollowingreasons:
•Maintenancerequired(ifthe
MaintenanceMonitorisenabled).
•Water-in-fuelisdetected.
•Coolantlevelislow.
MalfunctionIndicatorLamp
The“MalfunctionIndicatorLamp”(MIL)
illuminateswhenanengineemissions
failurehasoccurred.Thevehicle
canbesafelydrivenbutshouldbe
servicedtocorrecttheproblem.The
situationshouldnotbeconsideredan
emergency.Insomecases,theMIL
willactivateinconjunctionwiththe
“HighExhaustSystemT emperature,”
DPFand“DieselExhaustFluid”(DEF)
warninglamps.
3-4Y53-1185-1B1(12/2014)
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