DIAGNOSTICMANUAL
FuelRailPressure(FRP)
Theamountofpressureinthefuelrail.
FuelRailPressure(FRP)
sensor
AvariablecapacitancesensorthatmonitorsfuelpressureinthefuelrailandsendsasignaltotheECM.
Fuelstrainer
Apre-lterinthefuelsystemthatkeepslargercontaminantsfromenteringthefuelsystem.
FuelVolumeControlValve
(FVCV)
TheFVCVregulatesthevolumeofowsenttotheHPFP .TheFVCVallowsasufcientquantityoffuel
tobedeliveredtotheHPFPdependingonengineload,speed,injectorquantity,fueltemperature,and
numberofinjectionspercycle.
Fullyequippedengine
Afullyequippedengineisanengineequippedwithonlythoseaccessoriesnecessarytoperformitsintended
service.Afullyequippedenginedoesnotincludecomponentsthatareusedtopowerauxiliarysystems.If
thesecomponentsareintegralwiththeengineor,foranyreasonareincludedonthetestengine,thepower
absorbedmaybedeterminedandaddedtothenetbrakepower.(SAEJ1995JUN90)
Fusiblelink(fuselink)
Afusiblelinkisaspecialsectionoflowtensioncabledesignedtoopenthecircuitwhensubjectedtoan
extremecurrentoverload.(SAEJ1156APR86)
GrossCombinedWeightRating
(GCWR)
Maximumcombinedweightoftowingvehicle(includingpassengersandcargo)andthetrailer.TheGCWR
indicatesthemaximumloadedweightthatthevehicleisallowedtotow.
Grossbrakehorsepower
Thepowerofacompletebasicengine,withaircleaner,withoutfan,andalternator,andaircompressor
notcharging.
Halleffect
Thedevelopmentofatransverseelectricpotentialgradientinacurrent-carryingconductororsemiconductor
whenamagneticeldisapplied.
Halleffectsensor
Transducerthatvariesitsoutputvoltageinresponsetochangesinamagneticeld.Commonlyusedto
timethespeedofwheelsandshafts.
High-pressureFuelPump
(HPFP)assembly
TheHPFPisavolumetricpumpthatsuppliesfuelathigh-pressure.TheHPFPismountedintherearvalley
onthetopoftheengineandisdrivenbythecamshaft.
High-pressurePiezoCommon
Rail(HPCR)
TheHPFPpumpsfuelthroughseparatetubestoeachfuelrail.Eachfuelrailhasfourfueltubes,onefor
eachinjector,thatmaintainconstantpressurefromthehigh-pressurepumptoeachinjector.
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