Allison Transmission 3000 Series User Manual

NOTE:Allisonelectroniccontrolsaredesignedandmanufactured
tocomplywithallFCCandotherguidelinesregardingRadio
FrequencyInterference/ElectromagneticInterference(RFI/EMI)for
transportationelectronics.Manufacturers,assemblers,andinstallers
ofradio-telephoneortwo-waycommunicationradioshavethe
soleresponsibilitytocorrectlyinstallandintegratethosedevices
intoAllisonTransmission-equippedvehiclestothecustomer's
satisfaction.
8.5AUTODETECT
TheAutodetectsoftwarefeatureautomaticallydetectsthepresenceof
transmissioncomponentsorinputsignals,thuspermittingtheuseofdifferent
featuresorinputsignalswithacommonTCM.Autodetectchecksforthe
presenceofavalidinputsignaldenotingthepresenceofeachofthefeatures
listed.Diagnosticfunctionsrelatingtoeachoftheseitemsareexecutedif
thefeatureisdetectedandused.RefertoT able8–1forthepresenceofthe
followingtransmissioncomponentsordatainputs.
Table8–1.AutodetectFeatures
OutputRetarderPresence
Autodetect
OilLevelSensor(OLS)Presence
Autodetect
8.6ADAPTIVESHIFTING
Adaptiveshiftingisabasicdesignfeatureoftheshiftcontrolswhich
optimizesshiftquality.Thisisaccomplishedbyfrequentmonitoringofcritical
characteristicsintheclutchengagementprocessandmakingcontinuous
adjustmentstocertaincharacteristicswhichimprovesubsequentshifts.
Thetransmissionshiftcalibrationisbasedonseveraldifferenttypesofshifts,
suchasfullthrottle,partthrottle,closedthrottle,upshifts,anddownshifts.
Eachshiftisassociatedwithspecicspeedandthrottlepositionparameters.
Tooptimizeeachtypeofshiftfornormaldriving,itisnecessaryfortheshift
controlstohaveexperiencedoperationandshiftinginawidevarietyof
operatingconditions.Adrive-inperiodundervariousdrivingconditionsis
requiredbeforetheadaptivecontrolscanbeexpectedtooptimizeeachand
everyshift.Youshouldbegintoseeshiftqualityconvergetotheadaptedlevel
afterveshiftsofaparticularshifttype.
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Allison Transmission 3000 Series Specifications

General

Type	Automatic Transmission Controller
Control Module	Integrated
Shift Energy Management	Yes
Number of Gears	6
Torque Converter	Yes, with lock-up clutch
Retarder	Optional
PTO Provision	Yes
Input Voltage	12V or 24V
Communication Protocol	SAE J1939
Operating Temperature Range	-40°C to +85°C