Peterbilt 348 2017 - Page 86

WARNINGSYMBOLS
NOTE
•Tractors/Trucksandtrailers
builtafter3/1/01mustbe
abletoturnonanIn-Cab
TrailerABSWarningLamp
(perU.S.FMVSS121).The
industrychosePowerLine
Communication(PLC)asthe
standardmethodtoturniton.
•Ontrailersbuiltpriorto3/1/01
verifytrailerABSsystemstatus
viatherequiredexternalwarning
lampmountedonthetrailer.
Theindicatorlamponthetrailer
shouldbeyellowandidentied
withtheletters"ABS".
7.Axle,Inter-AxleDifferential
Locked(TandemAxles)
Illuminateswhentheinter-axle
differentialswitchisONthuslocking
theinter-axledifferential.Thispowers
theforwardrearandtherearrear
differentialsequally.Whentheswitch
isturnedoff(inter-axledifferential
unlocked)theenginepowerisallowed
toowtoanyofthe4drivetiresbased
onthedifferentialeffect(mostlytothe
forwardreardifferential).(Thisfeature
isstandardonalltandemaxles).
8.Axle,StabilityControl(ESC
orElectronicStabilityControl)
Calculatesthedriver’sintended
pathoftravelfromwheelspeedand
steeringanglesensors,thencompares
calculationstotheactualdirectionof
travel.Thesystemusesindividual
wheelbrakestore-adjustthepathof
thevehicle.
•Illuminatesduringthepower-on
self-testwhentheignitionis
turnedON.Itturnsoffafterafew
secondsifnosystemproblems
aredetected.IfanESCproblem
isdetected,theESCwarninglamp
willturnonandstayon.
•IlluminateswhentheESCsystem
isregulatingindividualwheel
brakestocorrectthevehicle’s
directionoftravel.
9.Axle,TractionControl(ATC
orAutomaticTractionControl)
Watchesvehicle’swheelspeeds
todetectslippageandmayreduce
enginepower,orapplyvehiclebrakes,
tohelpincreasetraction.
•Illuminatesduringthepower-on
self-testwhentheignitionis
turnedON.Itturnsoffafterafew
secondsifnosystemproblems
aredetected.IfanATCproblemis
detected,theATCwarninglamp
willturnonandstayon.
•IlluminateswhentheATCis
regulatingwheelspinandturnsoff
afterthetractioncontroleventhas
ended.
3-20Y53-6060-1C1(03/17)
3