Allison Transmission T 280

COMPONENTSANDFUNCTIONS).Ifthetransmissionislockedinrange
duetoanactiveDTC,thesystemstillallowstheoperatortoreviewtheDTC
intheselectorwithsimultaneousbuttonpressesonthe↑(Upshift)and↓
(Downshift)arrowseventhoughthetransmissionisnotinN(Neutral).
ConditionswhichilluminatetheCHECKTRANSindicatordisabletheshift
selector.TheSELECTdisplayisblankandtheMONITORdisplayshowsthe
rangeactuallyattained.Foradetailedexplanation,referto6.2.1CHECK
TRANSLIGHT.
7.9STRIPPUSHBUTTONSHIFTSELECTOR
Functionoftheseselectorsissimilartothekeypadpushbuttonselectors.
Buttonsonthestripselectors,however,arearrangedinasinglehorizontal
roworasingleverticalcolumn.Whenoneofthebuttonsispressed,alight
intheupperrightcornerofthebuttonindicatestheselectedrange.These
selectorsdonothaveaMODEbuttontoselectasecondaryshiftschedule.
TheseselectorshavenoVFDandcannotdisplayprognostic,uidll,or
diagnosticinformation.
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