OPERATOR'S MANUAL
Table Of Contents
OPERATINGTHEBRAKESYSTEM
Whendriveninabobtailmode,
thesetractorswillrequiregreater
brakepedalapplicationtoprovidethe
equivalentbrakingtoabobtailtractor
notequippedwithaproportioning
system.
TrailerABS
PowerLineCommunication
(PLC)
NorthAmericanon-highwayvehicles
areequippedwithaseparateelectrical
circuittopowertheanti-lockbrake
system(ABS)ontowedvehicle(s).
Inmostcases,theABSpowerwill
besuppliedthroughtheAuxiliary
circuitontheprimary7-waytrailer
lightlineconnector.Ifthevehicle
wasmanufacturedwithaswitchable
Auxiliarycircuitfortraileraccessories,
anadditional7-wayconnectorwould
havebeenprovidedfortrailerABS
power.Ineithercase,theABS
powerlineonthevehiclewillbePLC
equipped.
CAUTION
Donotspliceintothenon-switchable
Auxiliarycircuitontheprimary7-way
trailerlightline.Doingsomaycause
thetrailerABStomalfunction.This
circuitisdedicatedfortrailerABS
power.T oaddaswitchableauxiliary
circuit,contactadealership.
Vehiclesandtrailersbuiltafter
3/1/01mustbeabletoturnonan
In-CabTrailerABSWarningLamp
(perFederalMotorVehicleSafety
Standards(FMVSS)121).Theindustry
chosePowerLineCommunication
(PLC)asthestandardmethodtoturn
iton.
NOTE
TrailersnotequippedwithPLCcan
notturnontheIn-CabTrailerABS
WarningLamp.
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