20. ServiceManual-RocketIll

FuelSystem/EngineManagement

CircuitDiagram-EngineManagementSystem-RocketIll

• ServiceManual-RocketIll 11.21

SystemDiagnostics

Theenginemanagementsystemhasanon-boarddiagnosticsfeaturewhichallowsservicetechnicianstoretrievestoreddatafromtheECMusing aTriumphservicetool.Fulldetailsofthetool'soperationandhowtointerprettheresultsaregivenelsewhereinthissection.

Thetoolisconnectedtothemotorcycleusingadedicateddiagnosticplugsituatedbeneaththeseats.Byusingadedicatedplug,noelectricalconnectorsassociatedwiththesystemaredisturbed,reducingpotentialconnectordamage.

Thetoolallowstheusertoretrievedataassociatedwiththesystemsensorsandactuators,testvariouscomponentfunctions,readbuilddataandmakeminoradjustmentstotheset-upofthesystem.Thedataandtestsavailablearedescribedonthefollowingpages.

On-boardFaultDetectionSystem

Theon-boarddiagnosticsystemhastwostagestofaultdetection.Whenafaultisdetected,theDSM(DiagnosticStatusManager)raisesaflagtoindicatethatafaultispresentandincrementsacounter.Thecounterchecksthenumberofinstancesthatthefaultisnoted.Forexample,ifthereisafaultinthecrankshaftpositionsensor,thecounterwillincrementitscounteachtimethecrankshaftturnsthrough360°,providedthefaultisstillpresent.

Whenthecountbegins,thefaultisdetectedbutnotconfirmed.Ifthefaultcontinuestobedetectedandthecountreachesapre-determinedthreshold,thefaultbecomesconfirmed.Ifthefaultisanemissionsrelatedfaultoraseriousmalfunctionaffectingengineperformance,aDTC(DiagnosticTroubleCode)andfreeze-framedatawillbeloggedintheECM'smemoryandtheMIL (MalfunctionIndicatorLamp)onthemotorcycleinstrumentpanelisilluminated.Onceafaultisconfirmed,thenumberofwarm-upcyclesmadebytheengineiscounted.Ifthefaultclears,thewarm-upcyclecounterwillextinguishtheMIL(MalfunctionIndicatorLamp)atapredeterminedcount,anderasetheDTCandfreezeframedatafromtheECMmemoryatanother(higher)count.

Asinglewarm-upcycleisdeemedtohavetakenplacewhenthefollowingcriteriahavebeenmet:

• Thecoolanttemperaturemustberaisedto72°Cormore.

• Thecoolanttemperaturemusthaverisenby23°Cormorefromitsstarttemperature,when72°Cisreached.

• Acontrolledpower-downsequencemusttakeplace.

Note:

• Whenafaulthasbeenrectified,theMILwillremainilluminateduntilsufficientnon­faultwarm-upcycleshavetakenplacetoturnitoff.The MILwillbeimmediatelyextinguishedif,afterfirstrectifyingthefault,theOTC(diagnostictroublecode)thatcausedtheMILilluminationiserasedfromtheECMmemoryusingtheTriumphdiagnostictool.

Note:

• Inmostcases,whenafaultisdetected,theenginemanagementsystemwillreverttoa'limp-home'mode.Inthismode,theenginewillstillfunctionthoughtheperformanceandfueleconomymaybemarginallyaffected.Insomecases,theridermaynot noticeanyappreciabledifferencefromnormaloperation.

TriumphDiagnosticTool

DescribedonthefollowingpagesistherangeofinformationwhichcanberetrievedfromtheECM'smemoryandtheadjustmentswhichcanbeperformedusingtheTriumphservicediagnostictool.

Thetablesindicatewhichtestsareperformedbytheon-boardsystemandwhatinformationcanberetrievedbytheTriumphdiagnostictool.

Fulldetailsofhowtooperatethetoolandhowtointerpretthedatafollowlaterinthissection.