MACK VMAC IV, Year 2011-2013 Service Manual

ServiceInformation

EngineControlModule(ECM),DiagnosticTroubleCode

(DTC),Guide

2010Emissions

CHUCXUGUTD

Trucks

Group28

Release2

89047073

Foreword

Thedescriptionsandserviceprocedurescontainedinthismanualarebasedondesignsand
technicalstudiescarriedoutthroughJanuary2012.

Theproductsareundercontinuousdevelopment.Vehiclesandcomponentsproducedafterthe
abovedatemaythereforehavedifferentspecicationsandrepairmethods.Whenthisisdeemed
tohaveasignicantbearingonthismanual,anupdatedversionofthismanualwillbeissuedto
coverthechanges.

Theneweditionofthismanualwillupdatethechanges.

Inserviceprocedureswherethetitleincorporatesanoperationnumber ,thisisareferencetoan
V.S.T .(VolvoStandardTimes).

Serviceprocedureswhichdonotincludeanoperationnumberinthetitleareforgeneralinformation
andnoreferenceismadetoanV.S.T .

Eachsectionofthismanualcontainsspecicsafetyinformationandwarningswhichmustbe
reviewedbeforeperforminganyprocedure.Ifaprintedcopyofaprocedureismade,besureto
alsomakeaprintedcopyofthesafetyinformationandwarningsthatrelatetothatprocedure.The
followinglevelsofobservations,cautionsandwarningsareusedinthisServiceDocumentation:

Note:Indicatesaprocedure,practice,orconditionthatmustbefollowedinordertohavethe
vehicleorcomponentfunctioninthemannerintended.

Caution:Indicatesanunsafepracticewheredamagetotheproductcouldoccur.

Warning:Indicatesanunsafepracticewherepersonalinjuryorseveredamagetotheproduct

couldoccur.

Danger:Indicatesanunsafepracticewhereseriouspersonalinjuryordeathcouldoccur .

MackTrucks,Inc.

Greensboro,NCUSA

Ordernumber:PV776-89047073

Repl:PV776-89017543

©2012MackTrucks,Inc.,Greensboro,NCUSA

Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinretrievalsystem,
ortransmittedinanyformsbyanymeans,electronic,mechanical,photocopying,recordingor
otherwise,withoutthepriorwrittenpermissionofMackTrucks,Inc.

USA52163

Contents

Troubleshooting..........................................................................................................................1

EngineControlModule(ECM)DiagnosticTroubleCodes(DTCs).....................................................1

3

4

Group28

EngineControlModule(ECM)DiagnosticTrouble

Troubleshooting

EngineControlModule(ECM)DiagnosticTroubleCodes(DTCs)

Themanufacturerscantoolisthepreferredtoolfor
performingdiagnosticwork.Contactyourlocaldealerfor
moreinformationorvisit“www.premiumtechtool.com”.

Note:Theuseofascantoolisnecessarytoperformdiagnostic
workaswellasclearingofanydiagnostictroublecodes
(DTCs).DTC(s)cannolongerbeclearedusingthevehicles
instrumentclusterdigitaldisplayandstalkswitchcontrol.

SystemOverview

Codes(DTCs)

Sixelectroniccontrolunits(ECUs)areused;theenginecontrol
module(ECM),instrumentcontrolmodule(ICM),Vehicle
ElectronicControlUnit(VECU),transmissioncontrolmodule
(TCM),thegearselectorcontrolmodule(GSCM)andthe
aftertreatmentcontrolmodule(ACM).T ogether,thesemodules
operateandcommunicatethroughtheSAEJ1939(CAN

1)datalinktocontrolavarietyofengineandvehiclecab
functions.TheECMcontrolssuchthingsasfueltimingand
delivery,fanoperation,engineprotectionfunctions,engine
brakeoperation,theexhaustgasrecirculation(EGR)valve
andtheturbochargernozzle.TheVECUcontrolscruise
controlfunctions,accessoryrelaycontrolsandidleshutdown
functions.TheICMprimarilydisplaysoperationalparameters
andcommunicatesthesetotheotherECUs.Allhavethe
capabilitytocommunicateovertheSAEJ1587datalink
primarilyforprogramming,diagnosticsanddatareporting.

Inadditiontotheircontrolfunctions,themoduleshaveon
boarddiagnostic(OBD)capabilities.TheOBDisdesignedto
detectfaultsorabnormalconditionsthatarenotwithinnormal
operatingparameters.Whenthesystemdetectsafaultor
abnormalcondition,thefaultwillbeloggedinoneorbothof
themodules'memory ,thevehicleoperatorwillbeadvisedthat
afaulthasoccurredbyilluminationamalfunctionindicator
lamp(MIL)andamessageinthedriverinformationdisplay ,
ifequipped.Themodulemayinitiatetheengineshutdown
procedureifthesystemdeterminesthatthefaultcoulddamage
theengine.

Theuseofascantoolisnecessarytoperformdiagnosticwork
aswellasclearingofanydiagnostictroublecodes(DTCs).
DTC(s)cannolongerbeclearedusingthevehiclesinstrument
clusterdigitaldisplayandstalkswitchcontrol.Additional
dataanddiagnostictestsareavailablewhenascantoolis
connectedtotheSerialCommunicationPort.

Fordiagnosticsoftware,contactyourlocaldealer.

TheECMisamicroprocessorbasedcontrollerprogrammed
toperformfuelinjectionquantityandtimingcontrol,diagnostic
faultlogging,andtobroadcastdatatootherECUs.Thefuel
quantityandinjectiontimingtoeachcylinderisprecisely
controlledtoobtainoptimalfueleconomyandreducedexhaust
emissionsinalldrivingsituations.

TheECMcontrolstheoperationoftheinjectors,enginebrake
solenoid,EGRvalve,turbochargernozzleposition,andcooling
fanclutchbasedoninputsfrommanysensorsandinformation
receivedoverthedatalinksfromotherECUs.

TheVECUandECMaredependentoneachothertoperform
theirspeciccontrolfunctions.Inadditiontoswitchandsensor
data,thebroadcastofdatabetweenmodulesalsoincludes
variouscalculationsandconclusionsthateachmodulehas
developed,basedontheinputinformationithasreceived.

Insomesituationswhenafaultisdetected,thesystemwill
entera"derate"mode.Thederatemodeallowscontinued
vehicleoperationbutthesystemmaysubstituteasensor
orsignalvaluethatmayresultinreducedperformance.In
someinstances,thesystemwillcontinuetofunctionbut
enginepowermaybelimitedtoprotecttheengineandvehicle.
Diagnostictroublecodes(DTCs)loggedinthesystemmemory
canlaterberead,toaidindiagnosingtheproblemusinga
diagnosticcomputerorthroughtheinstrumentclusterdisplay,
ifequipped.WhendiagnosinganintermittentDTCorcondition,
itmaybenecessarytouseascantoolconnectedtotheSerial
CommunicationPort.

1

Group28

SystemElectronicControlUnit(ECU)Overview

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

Theenginecontrolmodule(ECM)monitorsandmodels(using
physicalprinciples)engineparameterstomonitortheengine
system'sperformanceinrealtime.Thisisperformedtoaidthe
ECMwithitsselfdiagnosticcapabilities.Manysensorsare
usedforinputtotheemissioncontrolsystem.

Thesystemcontainsthefollowing“emissioncritical”ECUs
thataremonitored;

•EngineControlModule(ECM)

•VehicleElectronicControlUnit(VECU)

•AftertreatmentControlModule(ACM)

•AftertreatmentNitrogenOxides(NOx)Sensors

•EngineV ariableGeometryTurbocharger(VGT)Smart

RemoteActuator(SRA)

MalfunctionIndicatorLamp(MIL),DescriptionandLocation

AMILlocatedintheinstrumentcluster.Thisambercolored
lampisusedtoinformthedriverthata“emissioncritical”
malfunctionsignalhasoccurred.

TheseECUsallcommunicatewiththeECMviadatalinks.The
VECUcommunicatesacrosstheSAEJ1939(CAN1)datalink
whiletheothersusetheSAEJ1939-7(CAN2)datalink.
TheOBDsystemsuseSAEJ1939datalinkprotocolfor
communicationwithscantoolsbut,Macktrucksstillare
capableofcommunicatingviatheSAEJ1587datalinkfor
diagnostics.Theuseofascantoolisnecessarytoperform
diagnosticworkaswellasclearingofanydiagnostictrouble
codes(DTCs).DTC(s)cannolongerbeclearedusingthe
vehiclesinstrumentclusterdigitaldisplayandstalkswitch
control.

ThereareotherECUssuchastheInstrumentControlModule
(ICM),TransmissionControlModule(TCM)andAnti-lock
BrakeSystem(ABS)Modulethatprovidedatatotheemission
controlsystemorthediagnosticsystembutarenot“emission
critical”.

W2036007

SAEJ1939DataLinkCommunication

Theelectroniccontrolunits(ECUs)thatcommunicateonthe
SAEJ1939datalink,communicateaccordingtotheSAE
J1587standard.Thediagnostictroublecodes(DTCs)setby
theECUscontaininformationthatisdescribedbythefollowing
abbreviations.

SASourceAddress:

Identicationofacontrolmodule.

SPNSuspectParameterNumber:

Identicationofaparameter(value).

FMIFailureModeIdentier:

Identicationoffaulttypes.

2

Group28

SAEJ1939FMITable

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI

0Datavalidbutabovenormaloperationalrange-Mostseverelevel

1Datavalidbutbelownormaloperationalrange-Mostseverelevel

2Dataerratic,intermittentorincorrect

3Voltageabovenormal,orshortedtohighsource

4Voltagebelownormal,orshortedtolowsource

5

6

7

8

9Abnormalupdaterate

10

11Rootcausenotknown

12Badintelligentdeviceorcomponent

13

14

15Datavalidbutabovenormaloperatingrange-Leastseverelevel

16Datavalidbutabovenormaloperatingrange-Moderatelyseverelevel

17Datavalidbutbelownormaloperatingrange-Leastseverelevel

18Datavalidbutbelownormaloperatingrange-Moderatelyseverelevel

19Receivednetworkdatainerror

20

21

22

23

24

25

26

27

28

SAET ext

Currentbelownormaloropencircuit

Currentabovenormalorgroundedcircuit

Mechanicalsystemnotrespondingoroutofadjustment

Abnormalfrequencyorpulsewidthorperiod

Abnormalrateofchange

Outofcalibration

Specialinstructions

ReservedforSAEassignment

ReservedforSAEassignment

ReservedforSAEassignment

ReservedforSAEassignment

ReservedforSAEassignment

ReservedforSAEassignment

ReservedforSAEassignment

ReservedforSAEassignment

ReservedforSAEassignment

29

30

31

ReservedforSAEassignment

ReservedforSAEassignment

Conditionexists

3

Group28

SAEJ1587DataLinkCommunication

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

Theelectroniccontrolunits(ECUs)alsocommunicateonthe
SAEJ1587datalink.TheseECUscommunicateaccordingto
theSAEJ1587standard.Thestandardhasbeenextended
withVOLVO’sownsupplement(PPID,PSID).Thediagnostic
troublecodes(DTCs)setbytheECUscontaininformationthat
isdescribedbythefollowingabbreviations.

MIDMessageIdenticationDescription:

Identicationofacontrolmodule.

PIDParameterIdenticationDescription:

Identicationofaparameter(value).

SAEJ1587FMITable

FMI

0Datavalid,butabovethenormalworkingrange

1Datavalid,butbelowthenormalworkingrange

2Intermittentorincorrectdata

3Abnormallyhighvoltageorshortcircuittohighervoltage

4Abnormallylowvoltageorshortcircuittolowervoltage

5

6Abnormallyhighcurrentorshortcircuittoground

7

8

9Abnormalupdaterate

10Abnormallystrongvibrations

11

12Faultymoduleorcomponent

13

14

15

SAET ext

Abnormallylowcurrentoropencircuit

Incorrectresponsefromamechanicalsystem

Abnormalfrequency

Non-identiablefault

Calibrationvaluesoutsidelimits

Specialinstructions

Reservedforfutureuse

PPIDProprietaryParameterIdentication

DescriptionMack:
Uniqueidenticationofaparameter(value).

SIDSubsystemIdenticationDescription:

Identicationofacomponent.

PSIDProprietarySubsystemIdentication

DescriptionMack:
Uniqueidenticationofacomponent.

FMIFailureModeIdentier:

Identicationoffaulttypes.

4

Group28

DiagnosticTroubleCode(DTC)Content

SPN0–500

•“ECMSPN84,Wheel-BasedV ehicleSpeed–MID128

PID84”,page1

•“ECM

PID91”,page11

SPN91,AcceleratorPedalPosition1–MID128

1

•“ECMSPN94,EngineFuelDeliveryPressure–MID128

PID94”,page11

•“ECMSPN97,WaterinFuelIndicator–MID128PID97”,

page12

•“ECMSPN98,EngineOilLevel–MID128PID98”,page

12

•“ECMSPN100,EngineOilPressure–MID128PID100”,

page13

•“ECMSPN102,EngineIntakeManifold1Pressure–MID

128PID102”,page14

•“ECMSPN103,EngineTurbocharger1Speed–MID128

PID103”,page15

•“ECMSPN105,EngineIntakeManifold1T emperature–

MID128PID105”,page15

•“ECMSPN108,BarometricPressure–MID128PID108”,

page16

•“ECMSPN110,EngineCoolantT emperature–MID128

PID1 10”,page16

•“ECMSPN111,EngineCoolantLevel–MID128PID111”,

page17

•“ECMSPN153,EngineHighResolutionCrankcase

Pressure–MID128PID153/PSID23”,page18

•“ECMSPN158,KeyswitchBatteryPotential–MID128

PID158/PSID124”,page19

•“ECMSPN171,AmbientAirT emperature–MID128PID

171”,page19

•“ECMSPN173,EngineExhaustGasT emperature(EGT)–

MID128PID173”,page20

•“ECMSPN175,EngineOilT emperature1–MID128PID

175”,page21

•“ECMSPN177,TransmissionOilT emperature–MID128

PID177”,page22

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

5

Group28

•“ECMSPN188,EngineSpeedAtIdle,Point1(Engine

Congurations)–MID128PID188”,page22

•“ECMSPN190,EngineSpeed–MID128PID190”,page

23

•“ECMSPN228,SpeedSensorCalibration–MID128PID

228”,page23

•“ECMSPN237,VehicleIdenticationNumber–MID128

PSID161”,page23

•“ECMSPN245,T otalVehicleDistance–MID128PID

245”,page23

•“ECMSPN251,Time–MID128PID251”,page24

•“ECMSPN252,Date–MID128PID252”,page25

•“ECMSPN411,EngineExhaustGasRecirculation

DifferentialPressure–MID128PID411”,page25

•“ECMSPN412,EngineExhaustGasRecirculation

Temperature–MID128PID412”,page26

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

SPN500–999

•“ECMSPN558,AcceleratorPedal1IdleV alidationSwitch

–MID128SID230”,page27

•“ECMSPN626,IntakeAirHeater(IAH)Relay–MID128

PID45”,page28

•“ECMSPN628,ProgramMemory–MID128SID240”,

page28

•“ECMSPN629,ElectronicControlUnit(ECU)1–MID

128SID254”,page29

•“ECMSPN630,CalibrationMemory–MID128SID253”,

page29

•“ECMSPN631,CalibrationModule–MID128PSID

77/PSID124”,page30

•“ECMSPN633,EngineFuelActuator1ControlCommand

–MID128SID18”,page30

•“ECMSPN636,CamshaftPositionSensor(CMP)–MID

128SID21”,page30

•“ECMSPN637,CrankshaftPositionSensor(CKP)–MID

128SID22”,page32

•“ECMSPN639,SAEJ1939DataLink1–MID128SID

231”,page33

•“ECMSPN641,EngineVariableGeometryTurbocharger

(VGT)Actuator1–MID128SID27”,page33

•“ECMSPN642,EngineVariableGeometryTurbocharger

(VGT)Actuator2–MID128PPID89”,page34

•“ECMSPN647,EngineFanClutchOutputDeviceDriver–

MID128SID33”,page34

•“ECMSPN651,EngineInjectorCylinder1–MID128SID

1”,page35

•“ECMSPN652,EngineInjectorCylinder2–MID128SID

2”,page36

6

Group28

•“ECMSPN653,EngineInjectorCylinder3–MID128SID

3”,page36

•“ECMSPN654,EngineInjectorCylinder4–MID128SID

4”,page37

•“ECMSPN655,EngineInjectorCylinder5–MID128SID

5”,page38

•“ECMSPN656,EngineInjectorCylinder6–MID128SID

6”,page39

•“ECMSPN677,EngineStarterMotorRelay–MID128

SID39”,page39

•“ECMSPN729,IntakeAirHeater(IAH)1–MID128SID

70”,page40

•“ECMSPN730,IntakeAirHeater(IAH)2–MID128SID

71”,page40

•“ECMSPN975,EstimatedPercentFanSpeed–(MID128

PID26)”,page41

SPN1000–1999

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

•“ECMSPN1072,EngineCompressionBrakeOutput#1–

MID128PPID122”,page42

•“ECMSPN1 127,EngineTurbochargerIntakeManifold

Pressure(IMP)–MID128PSID98”,page43

•“ECMSPN1136,EngineControlModule(ECM)

Temperature–MID128PPID55”,page44

•“ECMSPN1198,Anti–theftRandomNumber–MID128

PID224”,page44

•“ECMSPN1231,SAEJ1939DataLink2–MID128PSID

229”,page45

•“ECMSPN1265,EnginePistonCoolingOilPressure

Actuator–MID128SID85”,page45

•“ECMSPN1322,EngineMisreforMultipleCylinders–

MID128PSID27”,page46

•“ECMSPN1659,EngineCoolantSystemThermostat–

MID128PSID109”,page46

•“ECMSPN1675,EngineStarterMode–MID128SID

39”,page46

•“ECMSPN1677,AftertreatmentDPFAuxiliaryHeater

Mode–MID128PSID25”,page47

•“ECMSPN1761,AftertreatmentDieselExhaustFluid

(DEF)T ankLevel–PPID278”,page47

7

Group28

SPN2000–2999

•“ECMSPN2003,TransmissionControlModule(TCM)

Status–MID128PSID205”,page48

•“ECMSPN2017,CruiseControlStatus–MID128PID

85”,page48

•“ECMSPN2029,InvalidorMissingDatafromVehicleECU

–MID128PSID201”,page48

•“ECMSPN2629,EngineTurbochargerCompressorOutlet

Temperature–MID128PID404”,page49

•“ECMSPN2659,EngineExhaustGasRecirculation(EGR)

MassFlowRate–MID128PPID35”,page49

•“ECMSPN2791,EngineExhaustGasRecirculation(EGR)

ValveControl–MID128SID146”,page50

•“ECMSPN2836,BatteryPotential/SwitchedV oltage–MID

128PSID49”,page50

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

8

Group28

SPN3000–3999

•“ECMSPN3031,AftertreatmentDieselExhaustFluid

(DEF)T ankT emperature–MID128PPID274”,page51

•“ECMSPN3064,AftertreatmentDPFSystemMonitor–

MID128PPID326”,page51

•“ECMSPN3216,AftertreatmentIntakeNOx–MID128

PPID348”,page52

•“ECMSPN3226,AftertreatmentOutletNOx–MID128

PPID270/PSID90”,page52

•“ECMSPN3245,AftertreatmentDPFOutletTemperature–

MID128PPID436”,page53

•“ECMSPN3249,AftertreatmentDPFIntakeT emperature

–MID128PPID387”,page54

•“ECMSPN3251,AftertreatmentDPFDifferentialPressure

–MID128PID81”,page55

•“ECMSPN3363,AftertreatmentDieselExhaustFluid

(DEF)T ankHeater–MID128PSID75”,page55

•“ECMSPN3471,AftertreatmentFuelPressureControl

Actuator–MID128PPID328”,page56

•“ECMSPN3480,AftertreatmentDPFFuelPressure–MID

128PPID437/PSID108”,page56

•“ECMSPN3483,AftertreatmentRegenerationStatus–

MID128PSID47”,page57

•“ECMSPN3492,Aftertreatment1AirSystemRelay–MID

128PPID340”,page58

•“ECMSPN3509,SensorSupplyV oltage1–MID128SID

232”,page59

•“ECMSPN3510,SensorSupplyV oltage2–MID128SID

211”,page59

•“ECMSPN3511,SensorSupplyV oltage3–MID128PSID

113”,page59

•“ECMSPN3512,SensorSupplyVoltage4–MID128

PSID126”,page59

•“ECMSPN3522,AftertreatmentTotalFuelUsed–MID

128PSID91”,page60

•“ECMSPN3556,AftertreatmentHydrocarbonDoser–MID

128PPID329”,page60

•“ECMSPN3597,AftertreatmentDieselParticulateFilter

(DPF)RegenerationtooFrequent–MID128PSID119”,
page61

•“ECMSPN3675,EngineTurbochargerCompressor

BypassValvePosition–MID128PPID330”,page62

•“ECMSPN3720,AftertreatmentDPFAshLoadPercent–

MID128PPID337”,page63

•“ECMSPN3936,AftertreatmentDPFSystem–MID128

PSID28”,page63

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

9

Group28

SPN4000–5500

•“ECMSPN4094,NOxLimitsExceededDuetoInsufcient

DieselExhaustFluid(DEF)Quality–MID128PSID90”,
page63

•“ECMSPN4095,NOxLimitsExceededDuetoInterrupted

DieselExhaustFluid(DEF)Dosing–MID128PSID90”,
page64

•“ECMSPN4334,AfterteatmentDieselExhaustFluid(DEF)

DosingAbsolutePressure–MID128PPID273”,page64

•“ECMSPN4339,AftertreatmentSCRFeedbackControl

Status–MID128PSID90”,page64

•“ECMSPN4354,AftertreatmentDieselExhaustFluid

(DEF)LineHeater1–MID128PSID103”,page65

•“ECMSPN4356,AftertreatmentDieselExhaustFluid

(DEF)LineHeater3–MID128PSID102”,page65

•“ECMSPN4374,AftertreatmentDieselExhaustFluid

(DEF)PumpMotorSpeed–MID128PSID87”,page66

•“ECMSPN4375,AftertreatmentDieselExhaustFluid

Pump(DEF)DrivePercentage–MID128PSID121”,page
66

•“ECMSPN4376,AftertreatmentDieselExhaustFluid

(DEF)ReturnValve–MID128PSID105”,page67

•“ECMSPN4752,EngineExhaustGasRecirculation(EGR)

CoolerEfciency–MID128SID282”,page68

•“ECMSPN4811,EnginePistonCoolingOilPressure–

MID128PPID8”,page68

•“ECMSPN4813,EngineOilThermostatBypassValve

Opening–MID128PSID72”,page68

•“ECMSPN4815,EngineCoolingFanThermalSwitch

Position–MID128PPID333”,page69

•“ECMSPN5246,AftertreatmentSCROperatorInducement

Severity–MID128PSID46”,page69

•“ECMSPN5285,ChargeAirCooler(CAC)T emperature–

MID128PID52”,page70

•“ECMSPN5298,AftertreatmentDieselOxidationCatalyst

(DOC)ConversionEfciency–MID128PSID99”,page70

•“ECMSPN5392,AftertreatmentDieselExhaustFluid

(DEF)DosingValveLossofPrime–MID128PSID121”,
page70

•“ECMSPN5394,AftertreatmentDieselExhaustFluid

(DEF)DosingValve–MID128PSID89”,page71

•“ECMSPN5394,AftertreatmentDieselExhaustFluid

(DEF)DosingValve–MID128PSID90”,page72

•“ECMSPN5443,Aftertreatment1HydrocarbonDosing

System–MID128PPID329”,page72

•“ECMSPN5485,AftertreatmentDieselExhaustFluid

(DEF)PumpOrice–MID128PSID121”,page73

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

10

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN84,Wheel-BasedVehicleSpeed–MID128PID84

Codes(DTCs)

Typeof
fault:

FMI9

FMIDescription:

•Abnormalupdate

rate

FaultCondition:

•Missingsignal

fromVECU

Possible
Symptoms:

PossibleCause:

•Enginederate•SAEJ1587datalinkvehiclespeed

messagedoesnotexist,(VECUerror)

•VECU

FMI10

FMI13

FMI19

•Abnormalrateof

change

•Vehiclespeed

deemed
inaccurateby
VECU

•Outofcalibration•Novehiclespeed

availabletoVECU

•Receivednetwork

datainerror

•Vehiclespeed

deemed
inaccurateby
VECU

•MILilluminated•Vehiclespeedsensor(VSS)

•VECU

•MILilluminated•Vehiclespeedsensor(VSS)

•VECU

•MILilluminated•Vehiclespeedsensor(VSS)

•VECU

ECMSPN91,AcceleratorPedalPosition1–MID128PID91

Typeof
fault:

FMI9

FMI13

FMI10

FMI19

FMIDescription:

•Abnormalupdate

rate

FaultCondition:

•Missingsignal

fromVECU

•Outofcalibration•Pedalnot

connectedto
VECU

•Abnormalrateof

change

•Receivednetwork

datainerror

•Pedalposition

deemed
inaccurateby
VECU

•Pedalposition

deemed
inaccurateby
VECU

Possible
Symptoms:

PossibleCause:

•N/A•SAEJ1587datalinkpedalinformation

notavailable

•MILilluminated•Acceleratorpedalsensorfault

•MILilluminated•Acceleratorpedalsensorfault

•MILilluminated•Acceleratorpedalsensorfault

ECMSPN94,EngineFuelDeliveryPressure–MID128PID94

Typeof
fault:

FMI3

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Lowfuelpressure

sensorsignalline
voltage

•Lowfuelpressure

sensorsignalline
voltage

Possible
Symptoms:

PossibleCause:

•N/A•Damagedcontactsinharness

•Faultyfuelpressuresensor

•Opencircuit.

•N/A•Damagedcontactsinharness

•Faultyfuelpressuresensor

11

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI7

FMI13

FMI15

FMI17

FMI18

•Mechanicalsystem

notresponding
properly

•Dropinfuel

pressure

•OutofCalibration•Sensorindicatesa

invalidvalue

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

•Sensorindicatesa

invalidvalue

•Sensorindicatesa

invalidvalue

•Dropinfuel

pressure

•Enginederate•Cloggedfuellter

•Faultyfuelpressuresensor

•Leakingfuellineortting

•Poorfuelpumpresponse

•N/A•Wiringharness

•Faultyfuelpressuresensor

•Cloggedfuellter

•N/A•Wiringharness

•Faultyfuelpressuresensor

•N/A•Wiringharness

•Faultyfuelpressuresensor

•Cloggedfuellter

•Enginederate•Cloggedfuellter

•Faultyfuelpressuresensor

•Leakingfuellineortting

•Poorfuelpumpresponse

ECMSPN97,WaterinFuelIndicator–MID128PID97

Typeof
fault:

FMI0

FMI3

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Waterinfuelis

indicated

•N/A•Undetectedwater

Possible
Symptoms:

•Unevenrunning

•Enginestalling

infuelsupply

•Unevenrunning

•Enginestalling

FMI4

•Voltagebelow

normal,orshorted
tolowsource

•N/A•Undetectedwater

infuelsupply

•Unevenrunning

ECMSPN98,EngineOilLevel–MID128PID98

Typeof
fault:

FMI1

FMIDescription:

•Datavalidbutabove

normaloperational
range

FaultCondition:

•Criticallybelow

range

Possible
Symptoms:

•RedStopor

yellowCheck
lampsilluminated
dependentof
severity

PossibleCause:

•Waterinfuel

•Opencircuit

•Shorttoground

•Opencircuit

•Faultysensor

PossibleCause:

•Lowoillevelleakage

•Criticallylowoillevel

12

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI4

FMI5

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•ShortCircuit-

Positiveside

•ShortCircuit+,

Positiveside

•OpenCircuit+,

Positiveside

•Oillevelcannot

bemeasured

•Oillevelcannot

bemeasured

•OpenCircuit-

Negativeside

FMI18

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

•Moderatelybelow

range

•Criticallybelow

range

•RedStopor

yellowCheck
lampsilluminated
dependentof
severity

ECMSPN100,EngineOilPressure–MID128PID100

Typeof
fault:

FMI1

FMI3

FMIDescription:

•Datavalidbutbelow

normaloperational
range

•Voltagebelow

normalorshorted
low

FaultCondition:

•Criticallybelow

range

•ShortCircuit+,

Measuringline

•OpenCircuit,

Groundline

Possible
Symptoms:

•Enginederate

•Lowpressure

•RedStoplamp

illuminated

•Oilpressure

shows0inthe
cluster,engineis
running

•YellowCheck

lampsilluminated

FMI5

FMI13

FMI15

FMI17

•Currentbelow

normaloropen
circuit

•OpenCircuit+,5V

Supplyline

•ShortCircuit-,

Measuringline

•OpenCircuit,

Measuringline

•OutofCalibration•Sensorindicatesa

invalidvalue

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Sensorindicatesa

invalidvalue

•Sensorindicatesa

invalidvalue

•Oilpressure

shows0inthe
cluster,engineis
running

•YellowCheck

lampsilluminated

•Oilpressure

shows0inthe
cluster,engineis
running

•Oilpressure

shows0inthe
cluster,engineis
running

•Oilpressure

shows0inthe
cluster,engineis
running

•EngineOilLevel(EOL)sensorfailure

•Faultyharness

•EngineOilLevel(EOL)sensorfailure

•Faultyharness

•Lowoillevelleakage

•Moderatelylowoillevel

PossibleCause:

•Oilleakage

•Brokenoilpump

•Cloggedoilsystem

•EngineOilPressure(EOP)sensor

failure

•Faultyharness

•EngineOilPressure(EOP)sensor

failure

•Faultyharness

•EngineOilPressure(EOP)sensor

failure

•Faultyharness

•EngineOilPressure(EOP)sensor

failure

•Faultyharness

•EngineOilPressure(EOP)sensor

failure

•Faultyharness

13

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN102,EngineIntakeManifold1Pressure–MID128PID102

Codes(DTCs)

Typeof
fault:

FMI2

FMI3

FMI5

FMI12

FMI13

FMI14

FMI15

FMI17

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

•Badintelligent

deviceor
component

•OutofCalibration•Sensorindicates

•Specialinstructions•IntakeManifold

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

FaultCondition:

•IntakeManifold

PressureSensor
outputistoohigh
ortoolow

•Ashorttobattery

inthemetering
circuit

•Anopeninthe

groundcircuit
oftheIntake
ManifoldPressure
Sensor

•Ashorttoground

intheharness

•Anopeninthe5

voltsupplycircuit

•Anopeninthe

meteringcircuit

•IntakeManifold

Pressuresensor
outputistoohigh

•Sensorindicates

ainvalidvalue

ainvalidvalue

Pressuresensor
outputistoolow

•Sensorindicates

ainvalidvalue

•IntakeManifold

Pressuresensor
outputistoohigh

•Sensorindicates

ainvalidvalue

Possible
Symptoms:

•Enginederate

•MILlamp

•Enginederate

•MILlamp

•Enginederate

•MILlamp

•Enginederate

•MILlamp

•Enginederate

•MILlamp

•Enginederate

•MILlamp

•Enginederate

•MILlamp

•Enginederate

•MILlamp

PossibleCause:

•Faultyharness

•IntakeManifoldPressuresensor

illuminated

•Faultyharness

•Harnessconnectors

illuminated

•IntakeManifoldPressuresensor

•Faultyharness

•Harnessconnectors

illuminated

•IntakeManifoldPressuresensor

•Faultyharness

•IntakeManifoldPressuresensor

illuminated

•Faultyharness

•Harnessconnectors

illuminated

•IntakeManifoldPressuresensor

•Faultyharness

•IntakeManifoldPressuresensor

illuminated

•Inletairleakage

•Faultyharness

•Harnessconnectors

illuminated

•IntakeManifoldPressuresensor

•Faultyharness

•Harnessconnectors

illuminated

•IntakeManifoldPressuresensor

14

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN103,EngineTurbocharger1Speed–MID128PID103

Codes(DTCs)

Typeof
fault:

FMI0

FMI1

FMI9

FMI15

FMIDescription:

•Datavalidbutabove

normaloperational
range

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Abnormalupdate

rate

•Datavalidbutabove

normaloperating
range-Leastsevere
level

FaultCondition:

•Turbocharger

speedisatleast
25%greaterthan
thetargetwheel
speedforthe
measuredboost

•Turbocharger

speedisatleast
25%lessthan
thetargetwheel
speedforthe
measuredboost

•Afaultisloggedif

theTurbocharger
SpeedSensor
signalislost

•Turbocharger

speedisatleast
25%greaterthan
thetargetwheel
speedforthe
measuredboost

Possible
Symptoms:

•Enginederate

•MILilluminated

•Enginederate

•MILilluminated

•Enginederate

•MILilluminated

•Enginederate

•MILilluminated

PossibleCause:

•Missdetection

•Faultyharness

•Faultyharnessconnector

•TurbochargerSpeedSensor

•Missdetection

•Faultyharness

•Faultyharnessconnector

•TurbochargerSpeedSensor

•Faultyharness

•Faultyharnessconnector

•TurbochargerSpeedSensor

•Missdetection

•Faultyharness

•Faultyharnessconnector

•TurbochargerSpeedSensor

ECMSPN105,EngineIntakeManifold1Temperature–MID128PID105

Typeof
fault:

FMI0

FMI2

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•Sensorindicatesa

invalidvalue

•TheIntake

Manifold
Temperature
sensoroutputis
toohighortoolow

Possible
Symptoms:

•Enginederate•Poorcooling

•Enginederate

•MILilluminated

PossibleCause:

•Extremerunningconditions

•Poorcooling

•Extremerunningconditions

•EngineIntakeManifoldsensor

•Faultyharness

•Faultyharnessconnector

•AmbientAirT emperaturesensor

FMI4

•Voltagebelow

normal,orshorted
tolowsource

•N/A•Difculttostartin

coldclimates

•Minorcoldengine

smoke

•EngineIntakeManifoldsensor

•Faultyharness

•Faultyharnessconnector

•Enginederate

•MILilluminated

15

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI5

•Currentbelow

normaloropen
circuitt

•Possibleshortto

sensor

•Difculttostartin

coldclimates

•Enginederate

•MILilluminated

FMI13

•OutofCalibration•Thesensoroutput

isshowinga
constantvalue

•Enginederate

•Minorcoldengine

smoke

•MILilluminated

FMI17

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Thesensoroutput

isshowinga
constantvalue

•Enginederate

•Minorcoldengine

smoke

•MILilluminated

ECMSPN108,BarometricPressure–MID128PID108

Typeof
fault:

FMI2

FMI3

FMI4

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Barometric

Pressuresensor
outputistoohigh
ortoolow

•Shorttobatteryon

themeteringside

•Ashorttoground

onthemetering
side

Possible
Symptoms:

•Minorengine

derate

•MILilluminated

•MILilluminated•InternalfaultintheEngineControl

•MILilluminated•InternalfaultintheEngineControl

•EngineIntakeManifoldsensor

•Faultyharness

•Faultyharnessconnector

•EngineIntakeManifoldsensor

•Faultyharness

•Faultyharnessconnector

•EngineIntakeManifoldsensor

•Faultyharness

•Faultyharnessconnector

PossibleCause:

•FaultySensor

•FaultyEngineControlModule

Module

•FaultySensor

Module

•FaultySensor

ECMSPN110,EngineCoolantT emperature–MID128PID110

Typeof
fault:

FMI0

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

FaultCondition:

•Coolant

temperature
indicatescritical
limit

Possible
Symptoms:

•Enginederate

•RedStoplamp

illuminated

PossibleCause:

•Extremedrivingcondition

•Faultycoolantthermostat

•Malfunctioningfan

•Blockedradiator

FMI2

FMI4

•Dataerratic,

intermittentor
incorrect

•Voltagebelow

normalorshorted
low

•EngineCoolant

Temperature
sensoroutputis
toohighortoolow

•EngineCoolant

Temperature
sensorvoltage
toolow

•Mayaffect

driveabilityin
extremecases

•MILilluminated

•Difculttostartin

coldclimates

•Idlerunregulation

isdeteriorated

•FaultySensor

•Faultyharness

•Faultycoolantthermostat

•FaultySensor

•Faultyharness

•MILilluminated

16

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI5

FMI10

FMI13

FMI16

FMI17

•Currentbelow

normaloropen
circuit

•Abnormalrateof

change

•N/A•Difculttostartin

•EngineCoolant

Temperature
sensoroutput
isshowinga
constantvalue

•OutofCalibration•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Coolant

temperature
indicates
moderateupper
limit

•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•FaultySensor

coldclimates

•Faultyharness

•Idlerunregulation

isdeteriorated

•MILilluminated

•Mayaffectvehicle

driveability

•FaultySensor

•Faultyharness

•MILilluminated

•N/A•FaultySensor

•Enginederate

•YellowCheck

lampilluminated

•Extremedrivingcondition

•Faultycoolantthermostat

•Malfunctioningfan

•Blockedradiator

•N/A•FaultySensor

ECMSPN111,EngineCoolantLevel–MID128PID111

Typeof
fault:

FMI1

FMI3

FMI4

FMI5

FMIDescription:

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Criticallybelow

range

•Coolantlevelcan

notbedetected

•ShortCircuit+,

measuringline

•Coolantlevelcan

notbedetected

•ShortCircuit-,

measuringline

•Coolantlevelcan

notbedetected

•OpenCircuit

•Coolantlevelcan

notbedetected

Possible
Symptoms:

•Enginederate

•RedStoplamp

illuminated

•Coolantlevelcan

notbedetected

•Coolantlevelcan

notbedetected

•YellowCheck

lampilluminated

•Coolantlevelcan

notbedetected

•YellowCheck

lampilluminated

•Coolantlevelcan

notbedetected

•YellowCheck

lampilluminated

PossibleCause:

•Coolantlevelbelowrange

•Faultyharness

•Faultyharness

•Faultyharnessconnector

•Faultylevelsensor

•Faultyharness

•Faultyharnessconnector

•Faultylevelsensor

•Faultyharness

•Faultyharnessconnector

•Faultylevelsensor

17

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI14

FMI18

•Specialinstructions•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•Coolantlevelcan

notbedetected

•YellowCheck

lampilluminated

•Coolantlevelcan

notbedetected

•YellowCheck

lampilluminated

•Faultyharness

•Faultyharnessconnector

•Faultylevelsensor

•Faultyharness

•Faultyharnessconnector

•Faultylevelsensor

ECMSPN153,EngineHighResolutionCrankcasePressure–MID128
PID153/PSID23

Typeof
fault:

FMI0

FMI2

FMI3

FMI5

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normalorshortedto
highsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Outofrange,max

voltage,illegal

•CriticallyAbove

Range

•Crankcase

pressure
indicationtohigh
ortolowavalue

•ShortCircuit+,

Measuringline

•OpenCircuit,

Groundline

•OpenCircuit+,5V

SupplyLine

•ShortCircuit-,

measuringline

Possible
Symptoms:

•RedStoplamp

illuminated

PossibleCause:

•Pistonringblow-by

•Forcedidle

•Engineshutdown

•MILilluminated•FaultyCrankCasePressuresenor

•Faultyharness

•MILilluminated

•YellowCheck

lampilluminated

•MILilluminated

•YellowCheck

lampilluminated

•FaultyCrankCasePressuresenor

•Faultyharness

•FaultyCrankCasePressuresenor

•Faultyharness

•OpenCircuit,

measuringline

FMI7

FMI13

•Mechanicalsystem

notrespondingor
outofadjustment

•Leakagedetected

inthecrankcase
ventilationsystem

•OutofCalibration•Sensoroutof

range

•MILilluminated•Faultyseparator,hosesorpipes

•MILilluminated•FaultySensor

•Sensorindicatesa

invalidvalue

18

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI15

FMI17

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•MILilluminated•FaultySensor

•MILilluminated•FaultySensor

ECMSPN158,KeyswitchBatteryPotential–MID128PID158/PSID124

Typeof
fault:

FMI0

FMI1

FMI3

FMI4

FMI16

FMI18

FMIDescription:

•Datavalidbutabove

normaloperational
range

•Datavalidbutbelow

normaloperational
range

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

FaultCondition:

•EngineControl

Modulebattery
voltagetoohigh

•EngineControl

Modulebattery
voltagetoolow

•EngineControl

Modulebattery
voltagetoohigh

•EngineControl

Modulebattery
voltagetoolow

•EngineControl

Modulebattery
voltagetoohigh

•EngineControl

Modulebattery
voltagetoolow

Possible
Symptoms:

PossibleCause:

•N/A•Chargingsystemfault

•Externalcharger

•Enginecontrolmodule(ECM)

•Starterwillnot

crank

•Chargingsystemfault

•Battery

•Groundconnection

•N/A•Chargingsystemfault

•Externalcharger

•Enginecontrolmodule(ECM)

•Starterwillnot

crank

•Chargingsystemfault

•Battery

•Groundconnection

•N/A•Chargingsystemfault

•Externalcharger

•Enginecontrolmodule(ECM)

•Starterwillnot

crank

•Chargingsystemfault

•Battery

•Groundconnection

ECMSPN171,AmbientAirT emperature–MID128PID171

Typeof
fault:

FMI2

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•KeyON,Ambient

AirT emperature
messagemissing
onSAEJ1939and
SAEJ1587data
links

Possible
Symptoms:

PossibleCause:

•N/A•Faultyinstrumentcluster

•Faultyharness

19

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI9

FMI10

FMI12

FMI13

FMI14

FMI19

•AbnormalUpdate

Rate

•Abnormalrateof

change

•Badintelligent

deviceor
component

•Outofcalibration•Ambient

•Specialinstructions•Ambient

•Receivednetwork

datainerror

•KeyON,Ambient

AirT emperature
messagemissing
onSAEJ1587
datalink

•Ambient

Temperature
sensorsignalfault

•LossofSAE

J1939datalink
communication
betweenEngine
ControlModule
andInstrument
ClusterControl
Module

Temperature
sensorsignalfault

•Noambient

temperature
calculatedby
VehicleECU

•Novalidambient

temperature
receivedby
EngineControl
Module

Temperature
sensorsignalfault

•Ambient

Temperature
sensorsignalfault

•N/A•Faultyinstrumentcluster

•Faultyharness

•MILilluminated•Faultyinstrumentcluster

•MILilluminated•Faultyinstrumentcluster

•Faultyharness

•MILilluminated•Faultyinstrumentcluster/harnessor

clusterharnessconnectors

•MILilluminated•AmbientT emperaturesensorsignal

missingfromVehicleECU

•MILilluminated•Faultyinstrumentcluster

ECMSPN173,EngineExhaustGasTemperature(EGT)–MID128PID173

Typeof
fault:

FMI0

FMI2

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•ExhaustGas

Temperatureis
criticallyhigh

•Sensorisnot

rational

Possible
Symptoms:

•Enginederate

•Poordriveability

•Regenerationis

notpossible

•MILilluminated

•Regenerationis

notpossible

PossibleCause:

•Faultyharness

•Faultyharnessconnector

•Intakeairleak

•Faultyharness

•Faultyharnessconnector

•Exhaustleak

•Intakeairleak

•Sensorfailure

20

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI4

FMI5

FMI15

FMI16

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Shorttogroundon

themeteringside
ofthecircuit

•Shorttobatteryon

themeteringside
ofthecircuit

•Openinthe

meteringsideof
thecircuit

•Openinthe

groundsideof
thecircuit

•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•ExhaustGas

Temperatureis
moderatelytoo
high

•MILilluminated

•Regenerationis

notpossible

•Sensorfailure

•Faultyharness

•Faultyharnessconnector

•Aftertreatmentcontrolmodule(ACM)

•MILilluminated•Faultyharness

•Sensorfailure

•Faultyharnessconnector

•MILilluminated•Sensorfailure

•Faultyharness

•Enginederate

•Poordriveability

•Faultyharness

•Faultyharnessconnector

•Intakeairleak

ECMSPN175,EngineOilT emperature1–MID128PID175

Typeof
fault:

FMI0

FMI2

FMI4

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Extremedriving

conditions

•Engineoil

temperature
criticallyabove
range

•Engineoil

temperature
sensorindicating
toohighortoolow
avalue(abnormal
value)

•Shortcircuit-,

measuringline

Possible
Symptoms:

•RedStoplamp

illuminated

•Enginederate

•MILilluminated

•Insomecases

mayhave
aneffecton
driveability

•MILilluminated

•YellowCheck

lampilluminated

PossibleCause:

•Extremedrivingconditions

•Enginecoolingfan

•Oilthermostat

•Coolantsystem

•Cloggedoilcooler

•EngineOilT emperature(EOT)sensor

failure

•Faultyharness

•EngineOilT emperature(EOT)sensor

failure

•Faultyharness

21

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI5

FMI13

•Currentbelow

normaloropen
circuit

•Shortcircuit+,

measuringline

•Opencircuit

•OutofCalibration•Sensoroutof

range

•MILilluminated

•YellowCheck

lampilluminated

•EngineOilT emperature(EOT)sensor

failure

•Faultyharness

•MILilluminated•EngineOilT emperature(EOT)sensor

failure

•Sensorindicatesa

invalidvalue

FMI16

FMI17

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Extremedriving

conditions

•Engineoil

temperatureis
moderatelytoo
high

•Sensoroutof

range

•Sensorindicatesa

invalidvalue

•YellowCheck

lampilluminated

•Enginederate

•Extremedrivingconditions

•Enginecoolingfan

•Oilthermostat

•Coolantsystem

•Cloggedoilcooler

•MILilluminated•EngineOilT emperature(EOT)sensor

failure

ECMSPN177,TransmissionOilT emperature–MID128PID177

Typeof
fault:

FMI0

FMI16

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

FaultCondition:

•Oiltemperature

criticallyabove
range

•Oiltemperature

ismoderatelytoo
high

Possible
Symptoms:

•RedStoplamp

illuminated

•YellowCheck

lampilluminated

PossibleCause:

•Transmissionoilcooler

•Coolantsystem

•Extremedrivingconditions

•Enginecoolingfan

•Oilthermostat

•Coolantsystem

•Cloggedoilcooler

ECMSPN188,EngineSpeedAtIdle,Point1(EngineCongurations)–
MID128PID188

Typeof
fault:

FMI0

FMI1

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

FaultCondition:

•Engineidlespeed

abovedesired
speed

•Engineidlespeed

belowdesired
speed

Possible
Symptoms:

•MILilluminated

•Highengineoil

consumption

•Highfuel

consumption

•MILilluminated

•Highfuel

consumption

PossibleCause:

•Engineoilenteringcylinders

•Leakingorfaultyfuelinjector

•Lowenginetorqueproduction

•Faultyfuelinjector

•Lowcylindercompression

•Enginefrictionistoohigh

22

Group28

ECMSPN190,EngineSpeed–MID128PID190

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

Typeof
fault:

FMI0

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

FaultCondition:

•Engineis/was

overspeeding

Possible
Symptoms:

•RedStoplamp

illuminated

PossibleCause:

•Engineoilenteringcylinders

•Faultycrankcaseoillter

•Possibleenginebrakeengaged

causingengineoverspeeding

•Possibletransmissiondownshift

causingengineoverspeeding

ECMSPN228,SpeedSensorCalibration–MID128PID228

Typeof
fault:

FMI9

FMI11

FMIDescription:

•Abnormalupdate

rate

•Failuremodenot

identiable

FaultCondition:

•SAEJ1587data

linkcalibration
factormessage
doesnotexist.
(VECUerror).

•SAEJ1587data

linkcalibration
factormessage
doesnotexist.
(VECUerror).

Possible
Symptoms:

PossibleCause:

•Yourtripdata•VehicleECU

•Yourtripdata•VehicleECU

ECMSPN237,VehicleIdenticationNumber–MID128PSID161

Typeof
fault:

FMI2

FMI12

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Badintelligent

deviceor
component

FaultCondition:

•Noanswerfrom

VIN

•Badanswerfrom

VIN

Possible
Symptoms:

•YellowCheck

lampilluminated

•Enginewillnot

start

•YellowCheck

lampilluminated

•Enginewillnot

start

PossibleCause:

•Datalinkerror

•ECM

•MissingVINinotherECM's(commonly

VECU,LCM)

•ECM

•MismatchedVINsentfromother

ECM's(commonlyVECU,LCM)

ECMSPN245,TotalVehicleDistance–MID128PID245

Typeof
fault:

FMI9

FMIDescription:

•Abnormalupdate

rate

FaultCondition:

•SAEJ1587data

linktotalvehicle
distancemessage
doesnotexist.
(VECUerror).

Possible
Symptoms:

PossibleCause:

•N/A•VehicleECU

23

Group28

ECMSPN251,Time–MID128PID251

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

Typeof
fault:

FMI2

FMI9

FMI10

FMI12

FMI13

FMI19

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•Timedata

messagemissing
onSAEJ1587and
J1939datalinks.
(Clustererror).

Possible
Symptoms:

PossibleCause:

•N/A•InstrumentCluster

•Timestamp

fromclusterisn't
available.

•Abnormalupdate

rate

•Timedata

messagedidn't
arrivewhen
expected.(Cluster
error).

•N/A•InstrumentCluster

•Timestamp

fromclusterisn't
available.

•Abnormalrateof

change

•Badintelligent

deviceor
component

•Soaktimetoo

long.

•Timedatafault,

datadeemed
inaccurate.

•Timeanddate

datamissingon
J1939datalink.

•MILilluminated

•Enginemakes

warmstartbut
coldstartneeded.

•MILilluminated•InstrumentCluster

•InstrumentCluster

•Faultyharness

•Faultyharnessconnector

•Outofcalibration•Time/datefault•MILilluminated•InstrumentCluster

•Faultyharness

•Faultyharnessconnector

•Receivednetwork

datainerror

•Soaktimetoolong.

•Timedatafault,

datadeemed
inaccurate.

•MILilluminated•InstrumentCluster

24

Group28

ECMSPN252,Date–MID128PID252

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

Typeof
fault:

FMI9

FMIDescription:

•Abnormalupdate

rate

FaultCondition:

•Timestamp

fromclusterisn't
available.

Possible
Symptoms:

PossibleCause:

•N/A•InstrumentCluster

•Datedata

messagemissing
onSAEJ1587
datalink.(Cluster
error).

ECMSPN411,EngineExhaustGasRecirculationDifferentialPressure–
MID128PID411

Typeof
fault:

FMI0

FMI1

FMI2

FMI3

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normalorshortedto
highsource

FaultCondition:

•ExhaustGas

Recirculation
(EGR)differential
pressuresensor
outputreadingtoo
high.(abnormal
value)

•ExhaustGas

Recirculation
(EGR)differential
pressuresensor
outputreadingtoo
low.(abnormal
value)

•Onlyusedto

controlEGRvalve.

•Shorttobatteryin

meteringline

•Openinthe

groundcircuit

Possible
Symptoms:

•MILilluminated

•Enginederate

•MILilluminated•Faultyharness

•N/A•N/A

•MILilluminated

•Enginederate

PossibleCause:

•Faultyharness

•Faultyharnessconnector

•Faultysensor

•EGRleakage

•CloggedEGRcooler

•Faultyharnessconnector

•Faultysensor

•Cloggedventuri

•FaultyEGRdifferentialpressure

sensorconnector

•FaultyEGRdifferentialpressure

sensorharness

•FaultyEGRdifferentialpressure

sensor

25

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI5

FMI7

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notrespondingor
outofadjustment

•Openinthe5volt

supplyline

•Shorttogroundin

meteringline

•Openinthe

meteringline

•EGRdifferential

pressuresensor
isreadeitherto
highortoolow .
(Abnormalvalue).

•MILilluminated

•Enginederate

•MILilluminated

•Enginederate

•FaultyEGRdifferentialpressure

sensorconnector

•FaultyEGRdifferentialpressure

sensorharness

•FaultyEGRdifferentialpressure

sensor

•FaultyEGRdifferentialpressure

sensorconnector

•FaultyEGRdifferentialpressure

sensorharness

•FaultyEGRdifferentialpressure

sensor

•EGRvalve

•EGRvalveleak

•Cloggedventuri

ECMSPN412,EngineExhaustGasRecirculationTemperature–MID128
PID412

Typeof
fault:

FMI0

FMI2

FMI4

FMI5

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•EngineExhaust

GasRecirculation
Temperatureis
aboverange

•EGRtemperate

signal,believed
tobenotvalid
(plausibilityfault)

•Shorttoground

onthemetering
sideoftheEGR
Sensorcircuit

•Shorttobattery

inthemetering
sideoftheEGR
Sensorcircuit

•Openinthe

meteringsideof
theEGRSensor
circuit

Possible
Symptoms:

PossibleCause:

•Enginederate•Extremedrivingconditions

•EGRcoolerfailure

•MILilluminated

•Faultysensor

•Enginederate

•MILilluminated

•Enginepower

willbederated
accordingtothe
errortorquemap

•MILilluminated

•Enginederate

•FaultyEGRT emperatureSensor

connector

•FaultyEGRT emperatureSensor

harness

•FaultyEGRT emperatureSensor

•FaultyEGRT emperatureSensor

connector

•FaultyEGRT emperatureSensor

harness

•FaultyEGRT emperatureSensor

•Opencircuitin

thegroundlineof
theEGRSensor
circuit

26

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI13

FMI13

FMI15

FMI16

FMI17

•Outofcalibration•EngineExhaust

•Sensorindicates

•Outofcalibration•EngineExhaust

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•EngineExhaust

•Sensorindicates

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•EngineExhaust

•EngineExhaust

•Sensorindicates

GasRecirculation
Temperature
sensorisoutof
range(low)

ainvalidvalue

GasRecirculation
Temperature
sensorisabove
range

GasRecirculation
Temperature
sensorisoutof
range(high)

ainvalidvalue

GasRecirculation
Temperatureis
aboverange

GasRecirculation
Temperatureis
outofrange(low)

ainvalidvalue

•MILilluminated•FaultyEGRT emperatureSensor

connector

•FaultyEGRT emperatureSensor

harness

•FaultyEGRT emperatureSensor

•Enginederate•Extremedrivingconditions

•EGRcoolerfailure

•MILilluminated•FaultyEGRT emperatureSensor

connector

•FaultyEGRT emperatureSensor

harness

•FaultyEGRT emperatureSensor

•Enginederate•Extremedrivingconditions

•EGRcoolerfailure

•MILilluminated•FaultyEGRT emperatureSensor

connector

•FaultyEGRT emperatureSensor

harness

•FaultyEGRT emperatureSensor

ECMSPN558,AcceleratorPedal1IdleValidationSwitch–MID128SID230

Typeof
fault:

FMI3

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•IdleV alidation

Switch(IVS)
signalshorted
tovoltage

•IdleV alidation

Switch(IVS)
signalshorted
togroundoropen

Possible
Symptoms:

•YellowCheck

•YellowCheck

PossibleCause:

•Faultyharnessorconnector

lampilluminated

•Faultyharnessorconnector

lampilluminated

27

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN626,IntakeAirHeater(IAH)Relay–MID128PID45

Codes(DTCs)

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•ShortCircuit+,

Measuringline

Possible
Symptoms:

•Preheatrelaynot

activated

•Whitesmokefor

coldstart

•Startproblemsin

coldclimate

•ShortCircuit-,

Measuringline

•YellowCheck

lampilluminated

•Inductionairishot

•Preheatrelayis

impossibletoturn
off

•OpenCircuit•Preheatrelaynot

activated

•Whitesmokefor

coldstart

•Startproblemsin

coldclimate

PossibleCause:

•Preheatrelaysolenoidshorted

•Faultyharness

•FaultyPreheatrelay

•Faultyharness

ECMSPN628,ProgramMemory–MID128SID240

Typeof
fault:

FMI2

FMI11

FMI12

FMI14

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Rootcausenot

known

•Badintelligent

deviceor
component

FaultCondition:

•Checksumerror•RedStoplamp

•Badsoftware

conguration

•Erroroncode-part

ofashRAMor
erasedvendor
area

•Specialinstructions•VINnotloadedyet•FlashingMIL

Possible
Symptoms:

illuminated

•Enginewillnot

start

•MILilluminated

•Enginewillnot

start

•RedStoplamp

illuminated

•Nothingfunctions

•Enginewillnot

start

PossibleCause:

•EngineControlModule(ECM)

software

•EngineControlModule(ECM)

software

•EngineControlModule(ECM)

software

•EngineControlModule(ECM)

•VINmissing

28

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN629,ElectronicControlUnit(ECU)1–MID128SID254

Codes(DTCs)

Typeof
fault:

FMI8

FMI12

FMIDescription:

•Abnormalfrequency

orpulsewidthor
period

•Badintelligent

deviceor
component

FaultCondition:

•Selftestfailure•RedStoplamp

•Selftestfailure•RedStoplamp

Possible
Symptoms:

illuminated

•Notpossibleto

programEngine
ControlModule
(ECM)

illuminated

•Enginewillnot

start

ECMSPN630,CalibrationMemory–MID128SID253

Typeof
fault:

FMI2

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•Checksumerror•RedStoplamp

Possible
Symptoms:

illuminated

•Enginewillnot

start

PossibleCause:

•EngineControlModule(ECM)

•EngineControlModule(ECM)

PossibleCause:

•EngineControlModule(ECM)

software

FMI12

FMI14

•Badintelligent

deviceor
component

•Checksumerror•RedStoplamp

illuminated

•Enginewillnot

start

•Specialinstructions•VINnotloadedyet•FlashingMIL

•Lossoflogdata

andsomeuser
congurabledata

•EngineControlModule(ECM)

•EngineControlModule(ECM)

software

29

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN631,CalibrationModule–MID128PSID77/PSID124

Codes(DTCs)

Typeof
fault:

FMI3

FMI8

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Abnormalfrequency

orpulsewidthor
period

FaultCondition:

•Checksumerror•Enginewillnot

•ResetofECM

doesnotwork

Possible
Symptoms:

start

•Enginewillnot

start

PossibleCause:

•Softwareerror

•Softwareerror

ECMSPN633,EngineFuelActuator1ControlCommand–MID128SID18

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+•YellowCheck

•Circuitshorted–•YellowCheck

•Opencircuit•YellowCheck

Possible
Symptoms:

lampilluminated

•Valveconstantly

shut

lampilluminated

•Highfuel

consumptiondue
tofuelleakage

lampilluminated

•Valveconstantly

shut

PossibleCause:

•Faultysolenoid

•Faultyharness

•FaultyECMdriver

•Faultysolenoid

•Faultyharness

•FaultyECMdriver

•Faultysolenoid

•Faultyharness

ECMSPN636,CamshaftPositionSensor(CMP)–MID128SID21

30

Typeof
fault:

FMI2

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•PhaseError

-Incorrect
correlation
betweenCMP
andcrankshaft
position(CKP)
sensor

Possible
Symptoms:

•MILilluminated

•Increaseinfuel

consumption

PossibleCause:

•Enginetiming

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI3

FMI8

•Voltageabove

normal,orshorted
tohighsource

•Abnormalfrequency

orpulsewidthor
period

•MissingSignal

fromCMPsensor

•OpenintheCMP

sensorcircuit

•Shorttobatteryin

theCMPsensor
circuit

•Shorttogroundin

theCMPsensor
circuit

•NoisySignalfrom

CMPsensor

•OpenintheCMP

sensorcircuit

•MILilluminated

•Possiblelossof

enginepower

•Increasedengine

starttime

•MILilluminated

•Possiblelossof

enginepower

•Increasedengine

starttime

•Faultyharness

•FaultyCMPsensor

•Faultyharness

31

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN637,CrankshaftPositionSensor(CKP)–MID128SID22

Codes(DTCs)

Typeof
fault:

FMI2

FMI3

FMI8

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normal,orshorted
tohighsource

•Abnormalfrequency

orpulsewidthor
period

FaultCondition:

•Intermittentor

weaksignal

•MissingSignal

CKPsensor

•OpenintheCKP

sensorcircuit

•Shorttobatteryin

theCKPsensor
circuit

•Shorttogroundin

theCKPsensor
circuit

•Erraticor

intermittentsignal
fromCKPsensor

•OpenintheCKP

sensor

Possible
Symptoms:

•MILilluminated

•YellowCheck

lampilluminated

•Increasedfuel

consumption

•Impreciseengine

timing

•Increasedfuel

consumption

•Unevencylinder

balancing

•Powerloss

•Smoke

•MILilluminated

•YellowCheck

lampilluminated

•Possiblelossof

enginepower

•Increasedfuel

consumption

•MILilluminated

•YellowCheck

lampilluminated

•Possiblelossof

enginepower

•Increasedengine

starttime

•Increasedfuel

consumption

•Unevencylinder

balancing

•Powerloss

•Smoke

PossibleCause:

•FaultyCKPsensorharness

•FaultyCKPsensor

•FaultyCKPsensorharness

•FaultyCKPsensor

•FaultyCKPsensorharness

•FaultyCKPsensormounting

32

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN639,SAEJ1939DataLink1–MID128SID231

Codes(DTCs)

Typeof
fault:

FMI2

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•SAEJ1939highor

lowcircuitshorted
+

Possible
Symptoms:

PossibleCause:

•MILilluminated•Faultyharnessorconnector

•SAEJ1939highor

lowcircuitshorted
–

•SAEJ1939high

orlowcircuitopen

ECMSPN641,EngineVariableGeometryTurbocharger(VGT)Actuator
1–MID128SID27

Typeof
fault:

FMI0

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

FaultCondition:

•EngineVariable

Geometry
Turbocharger
(VGT)actuator
temperatureoutof
range

Possible
Symptoms:

•PossibleRedStop

lampilluminated
(dependanton
severity)

•YellowCheck

lampilluminated

PossibleCause:

•N/A

•Possibleengine

derate

FMI2

FMI4

•Dataerratic,

intermittentor
incorrect

•Voltagebelow

normal,orshorted
tolowsource

•EngineVariable

Geometry
Turbocharger
(VGT)actuator
hasnotseena
validcommandon
CAN2datalink

•Incorrectdata

•Shorttoground•MILilluminated

•MILilluminated

•YellowCheck

lampilluminated

•Lowboost

•Lowpower

•Nozzleopens

•Smokefrom

engine

•YellowCheck

lampilluminated

•DisturbanceonCAN2datalink

•FaultyVGTactuatorconnector

•FaultyVGTactuatorharness

•Lowbatteryvoltage

•Nozzlewillopen

resultinginlow
powerandlow
boost

•VGTactuator

willcontinue
toattemptand
maintaintarget
nozzleposition

33

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI7

FMI9

FMI13

•Mechanicalsystem

notrespondingor
outofadjustment

•Abnormalupdate

rate

•Mechanical

problemwith
theEngine
VariableGeometry
Turbocharger
(VGT)actuator

•Datafromthe

EngineVariable
Geometry
Turbocharger
(VGT)actuator
hasbeenmissing
for2-seconds

•Outofcalibration•Failedself-

calibration

•MILilluminated

•YellowCheck

lampilluminated

•Lowboostand

smoke

•Possibleengine

derate

•Powerlossin

somecaseswhen
actuatormotor
hasbeendisabled

•MILilluminated

•YellowCheck

lampilluminated

•Enginederated

(major)

•EGRvalveclosed

•YellowCheck

lampilluminated

•VGTactuatormotoreffortis

temporarilylimitedtoprevent
overheating

•Restrictionsdetectedwhenrunning

learnsequence

•VGTactuatorisslowtofollow

commands

•VGTactuatorpositionisnottracking

command

•Datalinkharness

•NosupplytoVGTactuator

•VGTactuator

•VGTactuatorconnector

•VGTactuator

ECMSPN642,EngineVariableGeometryTurbocharger(VGT)Actuator2
–MID128PPID89

Typeof
fault

FMI0

FMI16

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

FaultCondition:

•VGTSRA

temperatureis
criticallyhigh

•VGTSRA

temperatureis
moderatelytoo
high

Possible
Symptoms:

•RedStoplamp

illuminated

•Enginederate

•YellowCheck

lampilluminated

•Enginederate

PossibleCause

•Coolantsystemmalfunction

•Extremedrivingconditions

•OverheatedVGTactuator

•Coolantsystemmalfunction

•Extremedrivingconditions

•OverheatedVGTactuator

ECMSPN647,EngineFanClutchOutputDeviceDriver–MID128SID33

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Shorttopositive

inthecoolingfan
controlcircuit

Possible
Symptoms:

•YellowCheck

lampilluminated

•Increasedfuel

consumption

PossibleCause:

•Faultycoolingfanactuator

•Faultycoolingfanactuatorharnessor

connector

•Fanrunsatfull

speed

34

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI4

FMI5

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Shorttoground

inthecoolingfan
controlcircuit

•Outputvoltage

is1/3thesupply
voltage

•Openinthe

coolingfancontrol
circuit

•YellowCheck

lampilluminated

•Fanalways

deactivatedor
alwaysactivatedif
faultisintermittent

•Increasedfuel

consumption

•Fanrunsatfull

speed

•Faultycoolingfanactuator

•Faultycoolingfanactuatorharnessor

connector

•Faultycoolingfanactuator

•Faultycoolingfanactuatorharnessor

connector

ECMSPN651,EngineInjectorCylinder1–MID128SID1

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Harnessshorted+

lowsidecircuit

Possible
Symptoms:

•MILilluminated

•YellowCheck

PossibleCause:

•Faultyharness

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

FMI5

FMI7

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notresponding
properly

•Harnessshorted

+,–oropenhigh
sidecircuit

•Harnessshorted–

lowsidecircuit

•Cylinderbalancing

dataabovelimit

•MILilluminated

•YellowCheck

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyharness

•Faultyenginefuelinjector

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

FMI8

FMI13

•Abnormal

frequency,pulse
width,orperiod

•Misredetected•MILilluminated

•Outofcalibration•Cylinderbalancing

dataabovelimit

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

FMI31

•Conditionexists•Misredetected•MILilluminated

•Roughengineidle

•Faultyenginefuelinjector(possibly

clogged)

35

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN652,EngineInjectorCylinder2–MID128SID2

Codes(DTCs)

Typeof
fault:

FMI3

FMI5

FMI7

FMI8

FMI13

FMI31

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Harnessshorted+

lowsidecircuit

•Harnessshorted

+,–oropenhigh
sidecircuit

•Harnessshorted–

lowsidecircuit

•Mechanicalsystem

notresponding
properly

•Abnormal

frequency,pulse
width,orperiod

•Cylinderbalancing

dataabovelimit

•Misredetected•MILilluminated

•Outofcalibration•Cylinderbalancing

dataabovelimit

•Conditionexists•Misredetected•MILilluminated

Possible
Symptoms:

•MILilluminated

PossibleCause:

•Faultyharness

•YellowCheck

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated

•YellowCheck

lampilluminated

•Faultyharness

•Faultyenginefuelinjector

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

ECMSPN653,EngineInjectorCylinder3–MID128SID3

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Harnessshorted+

lowsidecircuit

Possible
Symptoms:

•MILilluminated

•YellowCheck

PossibleCause:

•Faultyharness

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

36

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI5

FMI7

FMI8

FMI13

FMI31

•Currentbelow

normaloropen
circuit

•Harnessshorted

+,–oropenhigh
sidecircuit

•Harnessshorted–

lowsidecircuit

•Mechanicalsystem

notresponding
properly

•Abnormal

frequency,pulse
width,orperiod

•Cylinderbalancing

dataabovelimit

•Misredetected•MILilluminated

•Outofcalibration•Cylinderbalancing

dataabovelimit

•Conditionexists•Misredetected•MILilluminated

•MILilluminated

•YellowCheck

lampilluminated

•Faultyharness

•Faultyenginefuelinjector

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

ECMSPN654,EngineInjectorCylinder4–MID128SID4

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Harnessshorted+

lowsidecircuit

Possible
Symptoms:

•MILilluminated

•YellowCheck

PossibleCause:

•Faultyharness

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

FMI5

FMI7

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notresponding
properly

•Harnessshorted

+,–oropenhigh
sidecircuit

•Harnessshorted–

lowsidecircuit

•Cylinderbalancing

dataabovelimit

•MILilluminated

•YellowCheck

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyharness

•Faultyenginefuelinjector

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

FMI8

•Abnormal

frequency,pulse
width,orperiod

•Misredetected•MILilluminated

•Roughengineidle

•Faultyenginefuelinjector(possibly

clogged)

37

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI13

•Outofcalibration•Cylinderbalancing

dataabovelimit

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

FMI31

•Conditionexists•Misredetected•MILilluminated

•Roughengineidle

•Faultyenginefuelinjector(possibly

clogged)

ECMSPN655,EngineInjectorCylinder5–MID128SID5

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Harnessshorted+

lowsidecircuit

Possible
Symptoms:

•MILilluminated

•YellowCheck

PossibleCause:

•Faultyharness

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

FMI5

FMI7

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notresponding
properly

•Harnessshorted

+,–oropenhigh
sidecircuit

•Harnessshorted–

lowsidecircuit

•Cylinderbalancing

dataabovelimit

•MILilluminated

•YellowCheck

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyharness

•Faultyenginefuelinjector

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

FMI8

FMI13

•Abnormal

frequency,pulse
width,orperiod

•Misredetected•MILilluminated

•Outofcalibration•Cylinderbalancing

dataabovelimit

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

FMI31

•Conditionexists•Misredetected•MILilluminated

•Roughengineidle

•Faultyenginefuelinjector(possibly

clogged)

38

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN656,EngineInjectorCylinder6–MID128SID6

Codes(DTCs)

Typeof
fault:

FMI3

FMI5

FMI7

FMI8

FMI13

FMI31

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Harnessshorted+

lowsidecircuit

•Harnessshorted

+,–oropenhigh
sidecircuit

•Harnessshorted–

lowsidecircuit

•Mechanicalsystem

notresponding
properly

•Abnormal

frequency,pulse
width,orperiod

•Cylinderbalancing

dataabovelimit

•Misredetected•MILilluminated

•Outofcalibration•Cylinderbalancing

dataabovelimit

•Conditionexists•Misredetected•MILilluminated

Possible
Symptoms:

•MILilluminated

PossibleCause:

•Faultyharness

•YellowCheck

lampilluminated

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated

•YellowCheck

lampilluminated

•Faultyharness

•Faultyenginefuelinjector

•Enginepowerloss

•Enginerunning

uneven(misre)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

•MILilluminated•PTOengagedwithoutECMknowing

•Faultyenginefuelinjector

•Lowcylindercompression

•Damagedorywheel

•Faultyenginefuelinjector(possibly

•Roughengineidle

clogged)

ECMSPN677,EngineStarterMotorRelay–MID128SID39

Typeof
fault:

FMI3

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+•YellowCheck

•Opencircuit•YellowCheck

Possible
Symptoms:

lampilluminated

•Enginewillnot

start

lampilluminated

•Enginewillnot

start

PossibleCause:

•Faultystarterrelay

•Faultharness

•Faultystarterrelay

•Faultharness

39

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN729,IntakeAirHeater(IAH)1–MID128SID70

Codes(DTCs)

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+,

measuringline

•Circuitshorted–,

measuringline

Possible
Symptoms:

•YellowCheck

•YellowCheck

•Opencircuit•YellowCheck

PossibleCause:

•Faultypreheatrelay

lampilluminated

•Faultyintakeairheater(IAH)1

•Faultypreheatrelay

lampilluminated

•Faultyintakeairheater(IAH)1

•Faultyintakeairheater(IAH)1

lampilluminated

ECMSPN730,IntakeAirHeater(IAH)2–MID128SID71

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+,

measuringline

•Circuitshorted–,

measuringline

•Opencircuit•YellowCheck

Possible
Symptoms:

•YellowCheck

•YellowCheck

PossibleCause:

•Faultypreheatrelay

lampilluminated

•Fautlyintakeairheater(IAH)2

•Faultypreheatrelay

lampilluminated

•Fautlyintakeairheater(IAH)2

•Fautlyintakeairheater(IAH)2

lampilluminated

40

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN975,EstimatedPercentFanSpeed–(MID128PID26)

Codes(DTCs)

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Missingsignal

fromFanSpeed
Sensor

•ShortCircuit+,

Measuringline

•ShortCircuit-,

Measuringline

•OpenCircuit,

Measuringline

•OpenCircuit,

Groundline

Possible
Symptoms:

•Higherfuel

consumption

•Willworkason/off

fan,100%fan
speedifcoolingis
needed

PossibleCause:

•CoolingFanSpeed(CFS)sensor

failure

•FaultyCoolingFanSpeed(CFS)

sensorharness

41

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

ECMSPN1072,EngineCompressionBrakeOutput#1–MID128PPID122

Typeof
fault

FMI1

FMI3

FMI4

FMI5

FMIDescription:

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

Possible
Symptoms:

•Belowrange•Infolamp

illuminated

•NoEngine

Compression
Brake

•ShortCircuit+•Y ellowChecklamp

illuminated

•Engine

Compression
Brakecannot
beturnedon

•Enginebrake

functionderated

•Gearshift

performance
deratedfor
someautomatic
transmissions

•ShortCircuit-•Y ellowChecklamp

illuminated

•Compression

brakecannot
beturnedoff

•Enginestops

running

•Engineimpossible

torestart

•OpenCircuit•YellowChecklamp

illuminated

•Compressionrake

cannotbeturned
on

•Enginebrake

functionderated

•Gearshift

performance
deratedfor
someautomatic
transmission
boxes

PossibleCause

•Lowengineoiltemperature

•FaultyEngineCompressionBrake

actuator

•Faultyharness

•FaultyEngineCompressionBrake

actuator

•Faultyharness

•FaultyEngineCompressionBrake

actuator

•Faultyharness

42

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

ECMSPN1127,EngineTurbochargerIntakeManifoldPressure(IMP)–
MID128PSID98

Typeof
fault:

FMI0

FMI1

FMI10

FMI11

FMI13

FMI14

FMI16

FMI18

FMIDescription:

•Datavalidbutabove

normaloperational
range

•Datavalidbutbelow

normaloperational
range

•Abnormalrateof

change

•Rootcausenot

known

•Outofcalibration•VariableGeometry

•Specialinstructions•PoorEngine

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

FaultCondition:

•Engine

Turbocharger
boostpressure
istoohigh

•Engine

Turbocharger
boostpressure
istoolow

•PoorEngine

Turbocharger
boostpressure
response

•VariableGeometry

Turbocharger
controlmodefault

Turbocharger
controlmode
adjustment
exceeded

Turbocharger
boostpressure
response

•Engine

Turbocharger
boostpressure
istoohigh

•Engine

Turbocharger
boostpressure
istoolow

Possible
Symptoms:

•MILilluminated

•Turbocharger

surge

•MILilluminated

•Enginederate

•Engineslowto

respond

•MILilluminated

•Enginepower

loss/re­sponse/drivability

PossibleCause:

•EGRsystemfailure

•FaultyTurbochargerouletpressure

sensor

•Airleakinturbochargerhoses,pipes,

brackets,coolerorcomponents

•EGRsystemfault

•Turbochargerinletairsystemleak

•FaultyTurbocharger

•MILilluminated•VariableGeometryTurbochargerfault

•Enginepower

loss/re­sponse/drivability

•Airleakinturbochargerhoses,pipes,

brackets,coolerorcomponents

•EGRsystemfault

•FaultyTurbochargerouletpressure

sensor

•Exhaustbackpressuretoohigh

•MILilluminated•Airleakinturbochargerhoses,pipes,

brackets,coolerorcomponents

•VariableGeometryTurbochargerfault

•Oilpressurefault

•MILilluminated

•Turbocharger

surge

•MILilluminated

•Enginederate

•Engineslowto

respond

•EGRsystemfailure

•Faultysensor

•Airleakinturbochargerhoses,pipes,

brackets,coolerorcomponents

•EGRsystemfailure

43

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN1136,EngineControlModule(ECM)T emperature–MID128
PPID55

Codes(DTCs)

Typeof
fault

FMI4

FMI5

FMIDescription:

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Shorttoground

onthemetering
circuit

•Shorttobattery

inthemetering
circuit

Possible
Symptoms:

PossibleCause

•N/A•EngineControlModule(ECM)

•N/A•EngineControlModule(ECM)

•Openinthe

meteringcircuit

•Opencircuitinthe

groundcircuit

ECMSPN1198,Anti–theftRandomNumber–MID128PID224

Typeof
fault:

FMI2

FMI12

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Badintelligent

deviceor
component

FaultCondition:

•EngineControl

Moduleand
InstrumentControl
Modulesecurity
codesdonot
match

•Securitysystem

notinstalled

Possible
Symptoms:

•YellowCheck

lampilluminated

•Canstartengine

•YellowCheck

lampilluminated

•Canstartengine

PossibleCause:

•Securitysystemfailure

•Securitysystemfailure

44

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN1231,SAEJ1939DataLink2–MID128PSID229

Codes(DTCs)

Typeof
fault:

FMI2

FMI9

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Abnormalupdate

rate

FaultCondition:

•Circuitshorted+

•Circuitshorted–

•Opencircuit

•Missing

signalfrom
Aftertreatment
ControlModule
(ACM)

Possible
Symptoms:

•MILilluminated

•Enginepowerloss

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•Novariable

geometryengine
turbocharger
control

•MILilluminated

•YellowCheck

lampilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

PossibleCause:

•Faultyharness

•SAEJ1939datalink

•Faultyharnessorconnectors

•DEFpump

•AftertreatmentDieselExhaustFluid

(DEF)controlmodule

ECMSPN1265,EnginePistonCoolingOilPressureActuator–MID128
SID85

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+•YellowCheck

•Circuitshorted–•RedStoplamp

•Opencircuit•YellowCheck

Possible
Symptoms:

lampilluminated

•Possiblesmoke

duringstartup

illuminated

•Enginedamage

canoccurwithout
pistoncooling

lampilluminated

•Possiblesmoke

duringstartup

PossibleCause:

•Faultyharness

•Faultyactuator

•Faultyharness

•Faultyactuator

•Faultyharness

•Faultyactuator

45

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

ECMSPN1322,EngineMisreforMultipleCylinders–MID128PSID27

Typeof
fault:

FMI8

FMI31

FMIDescription:

•Abnormalfrequency

orpulsewidthor
period

FaultCondition:

•Cylindermisres

•Conditionexists•Cylindermisres

detectedin
multiplecylinders

detectedin
multiplecylinders

Possible
Symptoms:

•MILilluminated

•Roughidle

•Roughidle

•MILilluminated

PossibleCause:

•Enginefuelinjectors

•Enginefuelinjectors

ECMSPN1659,EngineCoolantSystemThermostat–MID128PSID109

Typeof
fault:

FMI7

FMIDescription:

•Mechanicalsystem

notrespondingor
outofadjustment

FaultCondition:

•Thermostatstuck

closed

Possible
Symptoms:

•Possiblepoor

drivability

PossibleCause:

•Coolantthermostat

FMI12

•Badintelligent

deviceor
component

•Thermostatis

leakingorstuck
open

•MILilluminated

•Longerengine

warmuptime

•Poorheatincab

ECMSPN1675,EngineStarterMode–MID128SID39

Typeof
fault:

FMI0

FMI7

FMI10

FMI14

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Mechanicalsystem

notrespondingor
outofadjustment

•Abnormalrateof

change

•Specialinstructions•PTOisengaged

FaultCondition:

•Starter

overheating

•Transmissionnot

inneutral

•Startergearis

stuck,engaged
withengine

orswitchon

Possible
Symptoms:

•Enginewillnot

start

•Enginewillnot

start

•Enginewillnot

start

•Enginewillnot

start

•Coolantthermostat

PossibleCause:

•Starterisdeactivateddueto

overheating

•Starterisdeactivateddueto

overheating

•Starterisdeactivateddueto

overheating

•Starterisdeactivateddueto

overheating

46

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN1677,AftertreatmentDPFAuxiliaryHeaterMode–MID128
PSID25

Codes(DTCs)

Typeof
fault:

FMI0

FMI7

FMI16

FMIDescription:

•Datavalidbutabove

normaloperational
range—most
severelevel

•Mechanicalsystem

notrespondingor
outofadjustment

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

FaultCondition:

•Truckhasidled

toolongwithout
completinga
periodicheat
mode

•Truckhasidled

toolongwithout
completinga
periodicheat
mode

•Truckhasidled

toolongwithout
completinga
periodicheat
mode

Possible
Symptoms:

•RedStoplamp

illuminated

•Enginederate

•Hightemperature

spikesinDPF
whendriving
isresumedor
duringstationary
regeneration

•YellowCheck

lampilluminated

•Whiteexhaust

smoke

•Hightemperature

spikesinDPF
whendriving
isresumedor
duringstationary
regeneration

•YellowCheck

lampilluminated

•Whiteexhaust

smoke

•Hightemperature

spikesinDPF
whendriving
isresumedor
duringstationary
regeneration

PossibleCause:

•Extremelycoldambienttemperatures

•PTOoperatedwithlimitedexhaust

temperatures

•Engineturbocharger

•Engineturbochargercompressor

bypassvalve

•Extremelycoldambienttemperatures

•PTOoperatedwithlimitedexhaust

temperatures

•Engineturbocharger

•Engineturbochargercompressor

bypassvalve

•Extremelycoldambienttemperatures

•PTOoperatedwithlimitedexhaust

temperatures

•Engineturbocharger

•Engineturbochargercompressor

bypassvalve

ECMSPN1761,AftertreatmentDieselExhaustFluid(DEF)T ankLevel–
PPID278

Typeof
fault:

FMI3

FMI5

FMI11

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

•Rootcausenot

known

FaultCondition:

•Shortcircuithigh

side

•Shortcircuit+

•Opencircuit

•DEFtanklevellow

(driverwarning)

Possible
Symptoms:

PossibleCause:

•N/A•DEFtankpickupassembly/sensor

•YellowCheck

lampilluminated

•LowDEFuid

lampilluminated

•DEFtankpickupassembly/sensor

•N/A

failure

failure

47

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI14

FMI18

•SpecialInstructions•DEFtankalmost

empty(driver
warning)

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

•DEFtankalmost

empty(driver
warning)

•LowDEFuid

lampilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•LowDEFuid

lampilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•N/A

•N/A

ECMSPN2003,TransmissionControlModule(TCM)Status–MID128
PSID205

Typeof
fault:

FMI9

FMIDescription:

•Abnormalupdate

rate

FaultCondition:

•Missingsignal

fromTransmission
ControlModule
(TCM)

Possible
Symptoms:

PossibleCause:

•N/A•Datalinkerror

ECMSPN2017,CruiseControlStatus–MID128PID85

Typeof
fault:

FMI9

FMIDescription:

•Abnormalupdate

rate

FaultCondition:

•Missing(Cruise

Control)signal
fromVECU

Possible
Symptoms:

•CruiseControl

doesnotwork

PossibleCause:

•NoclutchinformationtoEngineControl

Module(ECM)fromSAEJ1939data
link

ECMSPN2029,InvalidorMissingDatafromVehicleECU–MID128PSID
201

Typeof
fault:

FMI8

FMI9

FMIDescription:

•Abnormalfrequency

orpulsewidthor
period

•Abnormalupdate

rate

FaultCondition:

•Nocontactwith

VECU

•Missingsignal

fromcluster

Possible
Symptoms:

•YellowCheck

lampilluminated

•PTO,engine

compression
brakeandcruise
controldonot
work

•MILilluminated•Faultyharness

PossibleCause:

•Faultyharness

48

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

ECMSPN2629,EngineTurbochargerCompressorOutletTemperature–
MID128PID404

Typeof
fault:

FMI0

FMI2

FMI4

FMI5

FMI13

FMI15

FMI17

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Estimatedengine

turbocharger
discharge
temperatureerror.

•Engine

turbocharger
outlettemperature
signalbelievedto
benotvalid(high)
(plausibilityfault)

•Shortcircuit–,

measuringline

•Shortcircuit+,

measuringline

•Opencircuit

•Outofcalibration•Sensoroutof

range

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Sensoroutof

range

•Sensoroutof

range

Possible
Symptoms:

PossibleCause:

•Enginederate•Highambienttemperature

•Lowbarometricpressure

•Leakinengineturbochargerinlettube

•Enginederate

•Engineturbochargeroutlettemperature

•MILilluminated

•MILilluminated

•YellowCheck

lampilluminated

•MILilluminated

•YellowCheck

lampilluminated

•Faultysensor

•Faultyharness

•Faultysensor

•Faultyharness

•MILilluminated•Faultysensor

•MILilluminated•Faultysensor

•MILilluminated•Faultysensor

sensor

ECMSPN2659,EngineExhaustGasRecirculation(EGR)MassFlowRate
–MID128PPID35

Typeof
fault:

FMI0
(J1587
only)

FMI1

FMIDescription:

•Datavalidbutabove

normaloperational
range

•Datavalidbutbelow

normaloperational
range

FaultCondition:

•EGRowistoo

high

•EGRowistoo

low

Possible
Symptoms:

•MILilluminated

PossibleCause:

•FaultyEGRsystem

•Exhaustsmoke

•MILilluminated•FaultyEGRsystem

•CloggedEGRcooler

49

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI16

FMI18

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

•EGRowistoo

high

•EGRowistoo

low

•MILilluminated

•Exhaustsmoke

•FaultyEGRsystem

•Faultyharnessorconnector

•MILilluminated•FaultyEGRsystem

•CloggedEGRcooler

•Faultyharnessorconnector

ECMSPN2791,EngineExhaustGasRecirculation(EGR)ValveControl–
MID128SID146

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•StuckEGRvalve

•EGRvalvecircuit

shorted+

Possible
Symptoms:

•MILilluminated

•Enginederate

PossibleCause:

•Faultyharnessorconnector

•FaultyEGRvalve

•EGRvalvecircuit

shortedto–

FMI5

•Currentbelow

normaloropen
circuit

•OpenEGRvalve

circuit

•MILilluminated

•Enginederate

•Faultyharnessorconnector

•FaultyEGRvalve

ECMSPN2836,BatteryPotential/SwitchedVoltage–MID128PSID49

Typeof
fault:

FMI3

FMI4

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Batteryvoltage

toohigh

•Batteryvoltage

toolow

Possible
Symptoms:

PossibleCause:

•N/A•Faultycaborchassisharness

•Chargingsystemfault

•Externalcharger

•Starterwillnot

crank

•Faultycaborchassisharness

•Chargingsystemfault

•Battery

•Fuse

50

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN3031,AftertreatmentDieselExhaustFluid(DEF)T ank
Temperature–MID128PPID274

Codes(DTCs)

Typeof
fault:

FMI0

FMI4

FMI5

FMI8

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Abnormalfrequency

orpulsewidthor
period

FaultCondition:

•Aftertreatment

DieselExhaust
Fluid(DEF)tank
temperaturetoo
high

Possible
Symptoms:

•MILilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

PossibleCause:

•DEFtankpickupassembly/sensor

•Datedata

messagemissing
onSAEJ1587
datalink.(Cluster
error).

•ShortCircuit-•MILilluminated•DEFtankpickupassembly/sensor

•DEFtankpickupasssembly/sensor

•ShortCircuit+

•MILilluminated•DEFtankpickupassembly/sensor

•OpenCircuit

•DEFtankpickupassembly/sensor

•Sensorrippleis

nottoohigh

•N/A•DEFtankpickupassembly/sensor

•DEFtankpickup`assembly/sensor

failure

failure

wiringorconnectors

failure

wiringorconnectors

failure

wiringorconnectors

ECMSPN3064,AftertreatmentDPFSystemMonitor–MID128PPID326

Typeof
fault:

FMI0

FMI10

FMI11

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Abnormalrateof

change

•Rootcausenot

known

FaultCondition:

•Moderatelyhigh

sootload

•Sootloadinghigh

duetoheavy
loadoruse(no
problem)

•Criticallyhighsoot

load

Possible
Symptoms:

•YellowCheck

lampilluminated

•Mediumtohigh

enginederate

•YellowCheck

lampilluminated

•Enginederate

•RedStoplamp

illuminated

•Highengine

derate

•Enginederate

PossibleCause:

•DieselParticulateFilter(DPF)clogged

•AfterTreatmentFuelInjectorclogged

•Regenerationdisabledbydriveror

othercomponent

•Noerror,conditionoccursduring

heavyloadorusewithhighsoot
loading

•DieselParticulateFilter(DPF)clogged

•Aftertreatmenthydrocarbondoser

(injector)

•Regenerationdisabledbydriveror

othercomponent

51

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN3216,AftertreatmentIntakeNOx–MID128PPID348

Codes(DTCs)

Typeof
fault:

FMI2

FMI3

FMI5

FMI9

FMI11

FMI12

FMI13

FMI14

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

•Abnormalupdate

rate

•Rootcausenot

known

•Badintelligent

deviceor
component

FaultCondition:

•InletNOxsensor

error(plausibility)

•ShortCircuit,NOx

signal

•OpenCircuit,NOx

signal

•Missingsignal

fromNOxsensor

•NOxsensor

measuresnear
zeroforlongtime
withhighload

•NOx-sensorsignal

corrupt(incorrect
value)

•Outofcalibration•NOx-sensor

activation
(incorrectvalue)

•Specialinstructions•Missingsignal

fromsensordue
tobatteryvoltage

Possible
Symptoms:

PossibleCause:

•MILilluminated•EngineoutNOxhigh

•FaultyNOxsensor

•MILilluminated•FaultywiringbetweenNOxsensorand

NOxsensorECU

•FaultyNOxsensor

•MILilluminated•FaultywiringbetweenNOxsensorand

NOxsensorECU

•FaultyNOxsensor

•MILilluminated

•YellowCheck

lampilluminated

•LossofcommunicationfromNOx

sensorECUandEngineControl
Module(ECM)

•MILilluminated•FaultyNOxsensor

•MILilluminated•FaultyNOxsensor

•MILilluminated•FaultyNOxsensor

•MILilluminated•VoltagetoNOxsensoristoohighor

toolow

•Faultyharnesstosensor

ECMSPN3226,AftertreatmentOutletNOx–MID128PPID270/PSID90

MID233FaultcodesentbyMID128Enginecontrolunit

52

Typeof
fault

FMI2

FMI3

FMI5

FMIDescription:

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normalorshorted
tohighsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•InletNOxsensor

error(plausibility)

•Mismatch

betweensensors

•ShortCircuit,NOx

signal

•OpenCircuit,NOx

signal

Possible
Symptoms:

PossibleCause

•MILilluminated•EngineoutNOxhigh

•FaultyNOxsensor

•AftertreatmentDieselExhaustFluid

(DEF)quality

•MILilluminated•FaultywiringbetweenNOxsensorand

NOxsensorECU

•FaultyNOxsensor

•MILilluminated•FaultywiringbetweenNOxsensorand

NOxsensorECU

•FaultyNOxsensor

Group28

MID233FaultcodesentbyMID128Enginecontrolunit

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI9

FMI11

FMI12

FMI13

FMI14

FMI31

•Abnormalupdate

rate

•Rootcausenot

known

•Badintelligent

deviceor
component

•Missingsignal

fromNOxsensor

•NOxsensor

measuresnear
zeroforlongtime
withhighload

•NOx-sensorsignal

corrupt(incorrect
value)

•Outofcalibration•NOx-sensor

activation
(incorrectvalue)

•Specialinstructions•Missingsignal

fromsensordueto
batteryvoltage

•Conditionexists•InletNOxsensor

error

•Mismatch

betweensensors

•MILilluminated

•YellowChecklamp

illuminated

•LossofcommunicationfromNOx

sensorECUandEngineControl
Module(ECM)

•MILilluminated•FaultyNOxsensor

•MILilluminated•FaultyNOxsensor

•MILilluminated•FaultyNOxsensor

•MILilluminated•VoltagetoNOxsensoristoohighor

toolow

•Faultyharnesstosensor

•MILilluminated•EngineoutNOxhigh

•FaultyNOxsensor

•AftertreatmentDieselExhaustFluid

(DEF)quality

ECMSPN3245,AftertreatmentDPFOutletT emperature–MID128PPID
436

Typeof
fault:

FMI0

FMI2

FMI4

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Dataerratic,

intermittentor
incorrect

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Temperature

criticallytoohigh

•Sensoris

notrational
(plausibility)

•Shorttogroundon

themeteringside
ofthecircuit

Possible
Symptoms:

PossibleCause:

•Lowenginepower•RestrictedCatalyst

•Intakeairleak

•Faultysensor

•MILilluminated

•Regenerationnot

possible

•MILilluminated

•Regenerationnot

possible

•Faultysensor

•Exhaustsystemleak

•Faultyharnessconnectorsor

connections

•Faultyharness

•Faultysensor

•Aftertreatmentcontrolmodule(ACM)

53

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI5

•Currentbelow

normaloropen
circuit

•Shorttobatteryon

themeteringside
ofthecircuit

•Openinthe

meteringsideof
thecircuit

•MILilluminated•Faultyharness

•Faultysensor

•Aftertreatmentcontrolmodule(ACM)

•Openinthe

groundsideof
thecircuit

FMI15

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Temperature

sensorisoutof
range(high)

•Sensorindicatesa

invalidvalue

•MILilluminated•Faultyharness

•Faultysensor

ECMSPN3249,AftertreatmentDPFIntakeTemperature–MID128PPID
387

Typeof
fault:

FMI2

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•Sensoris

notrational
(plausibility)

Possible
Symptoms:

•MILilluminated

•Aborted

regeneration

PossibleCause:

•Faultyharness

•Faultyharnessconnectorsor

connections

•Exhaustsystemleak

•Faultysensor

FMI4

FMI5

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Shorttogroundon

themeteringside
ofthecircuit

•Shorttobatteryon

themeteringside
ofthecircuit

•Openinthe

meteringsideof
thecircuit

•MILilluminated

•Aborted

regeneration

•MILilluminated

•Regenerationnot

possible

•Faultyharness

•Faultysensor

•Aftertreatmentcontrolmodule(ACM)

•Faultyharness

•Faultysensor

•Aftertreatmentcontrolmodule(ACM)

•Openinthe

groundsideof
thecircuit

FMI15

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Temperature

sensorisoutof
range(high)

•Sensorindicatesa

invalidvalue

•MILilluminated•Faultyharness

•Faultysensor

54

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

ECMSPN3251,AftertreatmentDPFDifferentialPressure–MID128PID81

Typeof
fault:

FMI0

FMI2

FMI3

FMI5

FMI16

FMIDescription:

•Datavalidbutabove

normaloperational
range

•Dataerratic,

intermittentor
incorrect

•Voltageabove

normal,orshorted
tohighsource

•Currentbelow

normaloropen
circuit

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

FaultCondition:

•Criticallyhigh

pressure

•Sensorisnot

rational

•Shorttobatteryon

themeteringside

•Openinthe

groundline

•Openin5volt

supplyline

•Shorttogroundin

meteringline

•Openinmetering

line

•Moderatelyhigh

pressure

Possible
Symptoms:

•Enginederate

•RedStoplamp

illuminated

PossibleCause:

•Aftertreatmentdieselparticulatelter

(DPF)differentialpressuresensor
failure

•MILilluminated•Aftertreatmentdieselparticulatelter

(DPF)differentialpressuresensor
failure

•MILilluminated•Aftertreatmentdieselparticulatelter

(DPF)differentialpressuresensor
failure

•Faultyaftertreatmentdieselparticulate

lter(DPF)differentialpressuresensor
connector

•Faultyharness

•MILilluminated•Aftertreatmentdieselparticulatelter

(DPF)differentialpressuresensor
failure

•Faultyharness

•Enginederate•Aftertreatmentdieselparticulatelter

(DPF)differentialpressuresensor
failure

ECMSPN3363,AftertreatmentDieselExhaustFluid(DEF)TankHeater
–MID128PSID75

Typeof
fault:

FMI2

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•Commanded

valvepositionis
notplausible

Possible
Symptoms:

PossibleCause:

•N/A•Faultyharnessorconnectors

•AftertreatmentDEFtanktemperature

sensor

•AftertreatmentDEFtankheatingvalve

FMI3

FMI4

FMI5

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Circuitshorted+•N/A•AftertreatmentDEFpumpassembly

•Circuitshorted–

•N/A•AftertreatmentDEFpumpassembly

•Opencircuit

•Opencircuit•N/A•AftertreatmentDEFpumpassembly

55

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN3471,AftertreatmentFuelPressureControlActuator–MID128
PPID328

Codes(DTCs)

Typeof
fault:

FMI3

FMI4

FMI5

FMI7

FMI14

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notrespondingor
outofadjustment

•Specialinstructions•Aftertreatment

FaultCondition:

•Circuitshortedto

battery

•Circuitshortedto

ground

•Opencircuit•MILilluminated

•Aftertreatment

hydrocarbon
doserfuel
pressuretoolow

hydrocarbon
doserfuel
pressuretoohigh

Possible
Symptoms:

•MILilluminated

•YellowCheck

lampilluminated

•Aborted

regeneration

•MILilluminated

•YellowCheck

lampilluminated

•Aborted

regeneration

•YellowCheck

lampilluminated

•Aborted

regeneration

•MILilluminated

•YellowCheck

lampilluminated

•Regenerationnot

possible

•MILilluminated

•YellowCheck

lampilluminated

•Regenerationnot

possible

PossibleCause:

•Faultyharness

•Actuatorfailure

•Faultyharness

•Actuatorfailure

•Faultyharness

•Actuatorfailure

•Fuelshutoffvalvestuckopen

•Faultyfuelpressuresensor

•Fuelshutoffvalveleakage

ECMSPN3480,AftertreatmentDPFFuelPressure–MID128PPID
437/PSID108

56

Typeof
fault:

FMI2

FMIDescription:

•Dataerratic,

intermittentor
incorrect

FaultCondition:

•DPFfuel

pressuresensor
isnotrational
(plausibility)

•Aftertreatment

hydrocarbon
doserfuel
pressuretoolow

Possible
Symptoms:

•MILilluminated

•YellowCheck

lampilluminated

•Regenerationnot

possible

PossibleCause:

•Faultyaftertreatmentfuelshutoffvalve

•FaultyDPFfuelpressuresensor

•Airinfuel

•Fuellter

•Aftertreatmentfuelpump

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI3

FMI5

FMI7

FMI10

FMI15

•Voltageabove

normalorshortedto
highsource

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notrespondingor
outofadjustment

•Abnormalrateof

change

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Shorttobatteryon

themeteringside

•Openinthe

groundline

•Opencircuitinthe

5voltsupply

•Shortcircuitto

groundinthe
meteringline

•Opencircuitinthe

meteringline

•Mechanical

problem

•Aftertreatment

hydrocarbon
doserfuel
pressuresensor
stuck

•Aftertreatment

hydrocarbon
doserfuel
pressuretoohigh

•Fuelpressure

sensorisoutof
range

•Sensorindicatesa

invalidvalue

•MILilluminated

•YellowCheck

lampilluminated

•Faultyharness

•FaultyDPFfuelpressuresensor

•Regenerationnot

possible

•MILilluminated

•YellowCheck

lampilluminated

•Faultyharness

•FaultyDPFfuelpressuresensor

•Regenerationnot

possible

•MILilluminated

•Enginederate

•Possibleengine

shutdown

•Regenerationnot

possible

•MILilluminated

•YellowCheck

lampilluminated

•Regenerationnot

possible

•Faultyaftertreatmenthydrocarbon

dosersystem

•Aftertreatmenthydrocarbondoser

•Faultyaftertreatmentfuelshutoffvalve

•Aftertreatmentfuelpump

•Faultyfuelpressuresensor

•Faultyshutoffvalve

•Aftertreatmenthydrocarbondoser

(injector)

•MILilluminated•Faultyfuelpressuresensor

ECMSPN3483,AftertreatmentRegenerationStatus–MID128PSID47

Typeof
fault:

FMI0

FMI1

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutbelow

normaloperational
range

FaultCondition:

•Unableto

achieveneeded
aftertreatment
temperature

•Aftertreatment

temperaturetoo
high

Possible
Symptoms:

•MILilluminated

•Possible

incomplete
regeneration

•MILilluminated

•Possible

incomplete
regeneration

PossibleCause:

•Aftertreatmenthydrocarbondoser

clogged

•Aftertreatmenthydrocarbondoserfuel

pressuretoolow

•Aftertreatmenthydrocarbondoser

clogged

•Aftertreatmenthydrocarbondoserfuel

pressuretoohigh

57

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI10

FMI12

FMI13

FMI15

FMI17

FMI31

•Abnormalrateof

change

•Badintelligent

deviceor
component

•OutofCalibration•Regeneration

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

•Conditionexists•Regeneration

•Regeneration

periodtoolong

•Regeneration

efciencytoolow

periodtoolong

•Unableto

achieveneeded
temperature

•Aftertreatment

temperaturetoo
high

periodtoolong

•MILilluminated

•Regeneration

frequencytoo
high

•Aftertreatmenthydrocarbondoser

•Airleakage

•N/A•Aftertreatmenthydrocarbondoser

clogged

•DieselParticulateFilter(DPF)catalyst

damaged

•DieselParticulateFilter(DPF)catalyst

clogged

•MILilluminated

•Regeneration

frequencytoo
high

•MILilluminated

•Possible

incomplete
regeneration

•MILilluminated

•Possible

incomplete
regeneration

•MILilluminated

•Regeneration

frequencytoo
high

•Aftertreatmenthydrocarbondoser

•Airleakage

•Fuellineclogged

•Aftertreatmenthydrocarbondoser

clogged

•Aftertreatmenthydrocarbondoserfuel

pressuretoolow

•Aftertreatmenthydrocarbondoser

clogged

•Aftertreatmenthydrocarbondoserfuel

pressuretoohigh

•Aftertreatmenthydrocarbondoser

•Airleakage

•Fuellineclogged

ECMSPN3492,Aftertreatment1AirSystemRelay–MID128PPID340

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normal,oropen
circuit

FaultCondition:

•Relaysupply

voltageoutof
range(high)

•Relaysupply

voltageoutof
range(low)

•Opencircuitin

Controlwireor
Groundwire

Possible
Symptoms:

•Regenerationnot

possible

•Regenerationnot

possible

•Regenerationnot

possible

PossibleCause:

•Wiringharness

•Shortcircuittobatteryvoltage,Control

wireAftertreatmentHydrocarbon
DosingModule

•Shortcircuittoground,Controlwire

•AftertreatmentHydrocarbonDosing

Module

•Connector

•Opencircuit,Controlwire

•Opencircuit,Groundwire

•AftertreatmentHydrocarbonDosing

Module

58

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN3509,SensorSupplyVoltage1–MID128SID232

Codes(DTCs)

Typeof
fault:

FMI3

FMI4

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Sensorsupply

voltageoutof
range(high)

•Sensorsupply

voltageoutof
range(low)

Possible
Symptoms:

•MILilluminated

•Incorrectsensor

values

•MILilluminated

•Incorrectsensor

values

PossibleCause:

•Faultyharnessorconnector

•Faultyharnessorconnector

ECMSPN3510,SensorSupplyVoltage2–MID128SID211

Typeof
fault:

FMI3

FMI4

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Circuitshorted+•MILilluminated

•Circuitshorted–•MILilluminated

Possible
Symptoms:

•Incorrectsensor

values

•Incorrectsensor

values

PossibleCause:

•Faultyharnessorconnector

•Faultyharnessorconnector

ECMSPN3511,SensorSupplyVoltage3–MID128PSID113

Typeof
fault:

FMI3

FMI4

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Circuitshorted+•MILilluminated•Faultyharness

•Circuitshorted–•MILilluminated•Faultyharness

Possible
Symptoms:

PossibleCause:

ECMSPN3512,SensorSupplyVoltage4–MID128PSID126

Typeof
fault:

FMI3

FMI4

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

FaultCondition:

•Sensorsupply

circuitshorted+

•Sensorsupply

circuitshorted–

Possible
Symptoms:

•MILilluminated

•Incorrectsensor

values

•MILilluminated

•Incorrectsensor

values

PossibleCause:

•Faultyharness

•Faultyharness

59

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN3522,AftertreatmentTotalFuelUsed–MID128PSID91

Codes(DTCs)

Typeof
fault:

FMI0

FMI1

FMI16

FMI18

FMIDescription:

•Datavalidbutabove

normaloperational
range

•Datavalidbutbelow

normaloperational
range

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

FaultCondition:

•Aftertreatment

DieselExhaust
Fluid(DEF)level
changetoomuch

•Aftertreatment

DieselExhaust
Fluid(DEF)level
changetoolittle

•Aftertreatment

DieselExhaust
Fluid(DEF)level
changetoomuch

•Aftertreatment

DieselExhaust
Fluid(DEF)level
changetoolittle

Possible
Symptoms:

PossibleCause:

•N/A•DEFsystemleak

•WrongDEFtank

•AftertreatmentDEFDosingModule

failureorwrongmodule

•N/A•DEFtanklevelsensorstuck

•DEFsystemclog

•WrongDEFtank

•AftertreatmentDEFDosingModule

failureorwrongmodule

•N/A•DEFsystemleak

•WrongDEFtank

•AftertreatmentDEFDosingModule

failureorwrongmodule

•N/A•DEFtanklevelsensorstuck

•DEFsystemclog

•WrongDEFtank

•AftertreatmentDEFDosingModule

failureorwrongmodule

ECMSPN3556,AftertreatmentHydrocarbonDoser–MID128PPID329

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Circuitshortedto

battery

Possible
Symptoms:

•MILilluminated

•YellowCheck

PossibleCause:

•Faultyharness

•Aftertreatmenthydrocarbondoser

lampilluminated

failure

•Regenerationnot

possible

FMI4

•Voltagebelow

normal,orshorted
tolowsource

•Circuitshortedto

ground

•MILilluminated

•YellowCheck

lampilluminated

•Faultyharness

•Aftertreatmenthydrocarbondoser

failure

•Regenerationnot

possible

FMI5

•Currentbelow

normaloropen
circuit

•Opencircuit•MILilluminated

•YellowCheck

lampilluminated

•Faultyharness

•Aftertreatmenthydrocarbondoser

failure

•Regenerationnot

possible

60

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI13

FMI14

•Outofcalibration•Aftertreatment

•Specialinstructions•Aftertreatment

•MILilluminated•Aftertreatmenthydrocarbondoser

hydrocarbon
doserclogged

•MILilluminated

hydrocarbon
doserleaking

•YellowCheck

lampilluminated

•Regenerationnot

possible

ECMSPN3597,AftertreatmentDieselParticulateFilter(DPF)Regeneration
tooFrequent–MID128PSID119

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+•MILilluminated•Faultyharness

•Circuitshorted–•MILilluminated•Faultyharness

•Opencircuit•MILilluminated•Faultyharness

Possible
Symptoms:

failure

•Fuelshutoffvalve

•Fuelsupplyfailure

•Aftertreatmenthydrocarbondoser

failure

PossibleCause:

•Faultyconnector

•AftertreatmentDEFlineheater1or3

failure

•AftertreatmentDEFpumpassembly

failure

•AftertreatmentDEFtankheatingvalve

failure

•AftertreatmentControlModule(ACM)

•Faultyconnector

•AftertreatmentDEFlineheater1or3

failure

•AftertreatmentDEFpumpassembly

failure

•AftertreatmentDEFtankheatingvalve

failure

•AftertreatmentControlModule(ACM)

•Faultyconnector

•AftertreatmentDEFlineheater1or3

failure

•AftertreatmentDEFpumpassembly

failure

•AftertreatmentDEFtankheatingvalve

failure

•AftertreatmentControlModule(ACM)

61

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN3675,EngineTurbochargerCompressorBypassValvePosition
–MID128PPID330

Codes(DTCs)

Typeof
fault:

FMI3

FMI4

FMI5

FMI7

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notrespondingor
outofadjustment

FaultCondition:

•Circuitshorted+

•On/offvalvecan't

beactivated

•Shortcircuit-

•Valveconstantly

activated

•Opencircuit

•On/offvalvecan't

beactivated

•Mechanically

Stuck

•On/offvalvecan't

beactivated

Possible
Symptoms:

•MILilluminated

•Yellowelectronic

malfunctionlamp
illuminated

•Regenerationnot

possible

•Highengine

brakingwithout
request

•Driveability

affected

•MILilluminated

•YellowCheck

lampilluminated

•Majorengine

derate

•Exhaustmanifold

overheating

•Engineshutdown

•MILilluminated

•YellowCheck

lampilluminated

•Regenerationnot

possible

•Highengine

brakingwithout
request

•Driveability

affected

•MILilluminated

•YellowCheck

lampilluminated

•Regenerationnot

possible

•Highengine

brakingwithout
request

•Driveability

affected

•Valveconstantly

activated

•Majorengine

derate

PossibleCause:

•Faultybypassvalvesolenoid

•Faultyharness

•Faultyharnessconnector

•Faultybypassvalvesolenoid

•Faultyharness

•Faultyharnessconnector

•Faultybypassvalvesolenoid

•Faultyharness

•Faultyharnessconnector

•Leakingpipes

•Faultybypassvalvesolenoid

62

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

•Exhaustmanifold

overheating

•Engineshutdown

ECMSPN3720,AftertreatmentDPFAshLoadPercent–MID128PPID337

Typeof
fault:

FMI0

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

FaultCondition:

•Ashleveltoohigh•YellowCheck

Possible
Symptoms:

PossibleCause:

•Needservice,ashlevelistoohigh

lampilluminated

ECMSPN3936,AftertreatmentDPFSystem–MID128PSID28

Typeof
fault:

FMI0

FMI1

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

FaultCondition:

•Aftertreatment

DPFdifferential
pressuresensor
valuetoohigh

•Aftertreatment

DPFdifferential
pressuresensor
valuetoolow

Possible
Symptoms:

PossibleCause:

•MILilluminated•AftertreatmentDPFdifferential

pressuresensor

•Aftertreatmentparticulatelter

•MILilluminated•AftertreatmentDPFdifferential

pressuresensor

•Aftertreatmentparticulatelter

ECMSPN4094,NOxLimitsExceededDuetoInsufcientDieselExhaust
Fluid(DEF)Quality–MID128PSID90

Typeof
fault:

FMI1

FMIDescription:

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

FaultCondition:

•Aftertreatment

DieselExhaust
Fluid(DEF)dosing
toolow

Possible
Symptoms:

•YellowCheck

•Enginederate

PossibleCause:

•DEFquality

lampilluminated

•AftertreatmentDEFlineclogged

•AftertreatmentDEFdoser

•Aftertreatmentcontrolmodulefailure

FMI14

•SpecialInstructions•Aftertreatment

DieselExhaust
Fluid(DEF)dosing
toolow

•YellowCheck

•Enginederate

•DEFquality

lampilluminated

•AftertreatmentDEFlineclogged

•AftertreatmentDEFdoser

•Aftertreatmentcontrolmodulefailure

FMI18

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

•Aftertreatment

DieselExhaust
Fluid(DEF)dosing
toolow

•YellowCheck

•Enginederate

•DEFquality

lampilluminated

•AftertreatmentDEFlineclogged

•AftertreatmentDEFdoser

•Aftertreatmentcontrolmodulefailure

63

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN4095,NOxLimitsExceededDuetoInterruptedDieselExhaust
Fluid(DEF)Dosing–MID128PSID90

Codes(DTCs)

Typeof
fault:

FMI7

FMIDescription:

•Mechanicalsystem

notrespondingor
outofadjustment

FaultCondition:

•Dosingfailure•MILilluminated

Possible
Symptoms:

•Aftertreatment

DieselExhaust
Fluid(DEF)low
usage

PossibleCause:

•DEFlevel

•FaultyDEFpump

•LeakinDEFhose

ECMSPN4334,AfterteatmentDieselExhaustFluid(DEF)DosingAbsolute
Pressure–MID128PPID273

Typeof
fault:

FMI1

FMI4

FMI5

FMIDescription:

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•DEFsystem

leakagedetected

•ShortCircuit-•MILilluminated

•ShortCircuit+

•OpenCircuit

Possible
Symptoms:

•MILilluminated

•NoAftertreatment

•NoAftertreatment

•MILilluminated

•YellowCheck

PossibleCause:

•DEFpump

•DEFhose

DieselExhaust
Fluid(DEF)
dosing

•AftertreatmentDieselExhaustFluid

(DEF)Doser(injector)

•DEFpumpassembly

DieselExhaust
Fluid(DEF)
dosing

•DEFpumpassembly

lampilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

ECMSPN4339,AftertreatmentSCRFeedbackControlStatus–MID128
PSID90

64

Typeof
fault:

FMI0

FMI1

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

FaultCondition:

•Adaptationtoo

high

•Adaptationtoolow•N/A•NOxsensor

Possible
Symptoms:

•N/A•NOxsensor

PossibleCause:

•AftertreatmentDieselExhaustFluid

(DEF)dosingsystemfailure

•AftertreatmentDieselExhaustFluid

(DEF)dosingsystemfailure

•DEFquality

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI10

FMI12

•Abnormalrateof

change

•Badintelligent

deviceor
component

•Adaptationtoo

high

•N/A•NOxsensor

•Adaptationtoolow•N/A•NOxsensor

•AftertreatmentDieselExhaustFluid

(DEF)dosingsystemfailure

•AftertreatmentDieselExhaustFluid

(DEF)dosingsystemfailure

•DEFquality

ECMSPN4354,AftertreatmentDieselExhaustFluid(DEF)LineHeater1
–MID128PSID103

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+•N/A•Faultyharness

•Circuitshorted–•N/A•Faultyharness

•Opencircuit•N/A•Faultyharness

Possible
Symptoms:

PossibleCause:

•Faultyconnector

•AftertreatmentDEFlineheater1

failure

•Faultyconnector

•AftertreatmentDEFlineheater1

failure

•Faultyconnector

•AftertreatmentDEFlineheater1

failure

ECMSPN4356,AftertreatmentDieselExhaustFluid(DEF)LineHeater3
–MID128PSID102

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+•N/A•Faultyharness

•Circuitshorted–•N/A•Faultyharness

•Opencircuit•N/A•Faultyharness

Possible
Symptoms:

PossibleCause:

•Faultyconnector

•AftertreatmentDEFlineheater3

failure

•Faultyconnector

•AftertreatmentDEFlineheater3

failure

•Faultyconnector

•AftertreatmentDEFlineheater3

failure

65

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN4374,AftertreatmentDieselExhaustFluid(DEF)PumpMotor
Speed–MID128PSID87

Codes(DTCs)

Typeof
fault:

FMI1

FMIDescription:

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

FaultCondition:

•Slowpumpspeed•MILilluminated

Possible
Symptoms:

PossibleCause:

•Faultyharness

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

ECMSPN4375,AftertreatmentDieselExhaustFluidPump(DEF)Drive
Percentage–MID128PSID121

Typeof
fault:

FMI0

FMI1

FMI3

FMI4

FMI5

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshorted+•MILilluminated

•Circuitshorted–

•Opencircuit

•Circuitshorted+•MILilluminated

•Circuitshorted–•MILilluminated

•Opencircuit•MILilluminated

Possible
Symptoms:

PossibleCause:

•Faultyharness

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•MILilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Faultyharness

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Faultyharness

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Faultyharness

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Faultyharness

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

66

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI12

FMI14

•Badintelligent

deviceor
component

•Opencircuit•MILilluminated

•Specialinstructions•Voltagetopump

outofrange

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•MILilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•Faultyharness

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Faultyharness

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

ECMSPN4376,AftertreatmentDieselExhaustFluid(DEF)ReturnValve
–MID128PSID105

Typeof
fault:

FMI3

FMI4

FMI5

FMI7

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Mechanicalsystem

notrespondingor
outofadjustment

FaultCondition:

•Circuitshorted+•MILilluminated

•Circuitshorted–

•Opencircuit

•Opencircuit•MILilluminated

•Possible

mechanical
problemwith
aftertreatment
dieselexhaust
uid(DEF)return
valve

Possible
Symptoms:

•Notpossibleto

performafterrun

•MILilluminated

•Notpossibleto

performafterrun

•Notpossibleto

performafterrun

•MILilluminated

•Notpossibleto

performafterrun

PossibleCause:

•Faultyharness

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Faultyharness

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Faultyharness

•Faultyconnector

•AftertreatmentDEFpumpassembly

failure

•Mechanicalfault–DEFreturnline

restrictedbetweenDEFpumpand
DEFtank

•AftertreatmentDieselExhaustFluid

(DEF)pumpassembly

67

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN4752,EngineExhaustGasRecirculation(EGR)CoolerEfciency
–MID128SID282

Codes(DTCs)

Typeof
fault:

FMI7

FMIDescription:

•Mechanicalsystem

notrespondingor
outofadjustment

FaultCondition:

•LowEGRcooler

efciency

Possible
Symptoms:

PossibleCause:

•MILilluminated•EGRcoolercloggedordamaged

ECMSPN4811,EnginePistonCoolingOilPressure–MID128PPID8

Typeof
fault:

FMI1

FMI3

FMI5

FMIDescription:

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Voltageabove

normalorshortedto
highsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Pressurebelow

range

•Shorttobatteryin

meteringline

•Openinthe

meteringside
sensorcircuit

Possible
Symptoms:

•RedStoplamp

illuminated

•YellowChecklamp

illuminated

•YellowChecklamp

illuminated

PossibleCause:

•N/A

•Faultyharness

•Faultysensor

•Faultyharness

•Opencircuitinthe

groundlinesensor
circuit

ECMSPN4813,EngineOilThermostatBypassValveOpening–MID128
PSID72

68

Typeof
fault:

FMI3

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

FaultCondition:

•Circuitshorted+•YellowCheck

Possible
Symptoms:

lampilluminated

•Oilthermostatis

alwaysopen

PossibleCause:

•Faultyactuator

•Faultyharness

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI4

•Voltagebelow

normal,orshorted
tolowsource

•Circuitshorted–•YellowCheck

lampilluminated

•Oilthermostatis

alwaysclosed

•Faultyactuator

•Faultyharness

•Enginemay

overheat

FMI5

•Currentbelow

normaloropen
circuit

•Opencircuit•YellowCheck

lampilluminated

•Oilthermostatis

alwaysopen

•Faultyactuator

•Faultyharness

•Mayhave

increasedfuel
consumption

ECMSPN4815,EngineCoolingFanThermalSwitchPosition–MID128
PPID333

Typeof
fault:

FMI3

FMI4

FMI5

FMIDescription:

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

FaultCondition:

•Circuitshortedto

battery

•Shortcircuit-•YellowCheck

•Opencircuit•YellowCheck

Possible
Symptoms:

•YellowCheck

PossibleCause:

•Faultyharness

lampilluminated

•Faultyharnessconnector

•Faultysensor

•Faultyharness

lampilluminated

•Faultyharnessconnector

•Faultysensor

•Faultyharness

lampilluminated

•Faultyharnessconnector

•Faultysensor

ECMSPN5246,AftertreatmentSCROperatorInducementSeverity–MID
128PSID46

Typeof
fault:

FMI0

FMI15

FMI16

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutabove

normaloperating
range-Leastsevere
level

•Datavalidbutabove

normaloperating
range-Moderately
severelevel

FaultCondition:

•SevereSCR

systemfault
detected–
Warningfault

•ModerateSCR

systemfault
detected–
Warningfault

•SCRsystem

faultdetected–
Warningfault

Possible
Symptoms:

•Severeengine

derate

•Moderateengine

derate

•Enginederate•N/A

PossibleCause:

•N/A

•N/A

69

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

ECMSPN5285,ChargeAirCooler(CAC)Temperature–MID128PID52

Typeof
fault:

FMI7

FMI18

FMIDescription:

•Mechanicalsystem

notresponding
properly

•Datavalidbutbelow

normaloperating
range

FaultCondition:

•Boosttemperature

toohigh

•Boosttemperature

toohigh

Possible
Symptoms:

PossibleCause:

•MILilluminated•Airowthroughchargeaircooler

•Chargeaircooler(CAC)

•MILilluminated•Airowthroughchargeaircooler

•Chargeaircooler(CAC)

ECMSPN5298,AftertreatmentDieselOxidationCatalyst(DOC)Conversion
Efciency–MID128PSID99

Typeof
fault:

FMI2

FMI7

FMI18

FMIDescription:

•Dataerratic,

intermittent,or
incorrect

•Mechanicalsystem

notresponding
properly

•Datavalidbutbelow

normaloperating
range-Moderately
severelevel

FaultCondition:

•Catalystoutlet

temperature
reactiontimetoo
lowtosupport
hydrocarbon
conversion

•Hydrocarbon

conversionistoo
lowintheDiesel
OxidationCatalyst
(DOC)

•Hydrocarbon

conversionistoo
lowintheDiesel
OxidationCatalyst
(DOC)

Possible
Symptoms:

PossibleCause:

•MILilluminated•Exhaustgastemperature(EGT)

•Catalystfailure

•MILilluminated•Catalystfailure

•DOCtemperaturesensor

•MILilluminated•Catalystfailure

•DOCtemperaturesensor

(CAC)toolow

(CAC)toolow

sensor

ECMSPN5392,AftertreatmentDieselExhaustFluid(DEF)DosingValve
LossofPrime–MID128PSID121

70

Typeof
fault:

FMI7

FMIDescription:

•Mechanicalsystem

notresponding
properly

FaultCondition:

•Aftertreatment

DieselExhaust
Fluid(DEF)
pressurebuild
upfailure

Possible
Symptoms:

•MILilluminated

•YellowCheck

•NoAftertreatment

PossibleCause:

•EmptyDEFtank

•DEFlterclogged

lampilluminated

DieselExhaust

•DEFinletpipeleakorblockage

Group28

EngineControlModule(ECM)DiagnosticTrouble

Codes(DTCs)

FMI31

•Conditionexists•Aftertreatment

DieselExhaust
Fluid(DEF)
pressurebuild
upfailure

Fluid(DEF)
dosing

•MILilluminated

•YellowCheck

lampilluminated

•NoAftertreatment

DieselExhaust
Fluid(DEF)
dosing

•DEFpumpassembly

•EmptyDEFtank

•DEFlterclogged

•DEFinletpipeleakorblockage

•DEFpumpassembly

ECMSPN5394,AftertreatmentDieselExhaustFluid(DEF)DosingValve
–MID128PSID89

Typeof
fault:

FMI0

FMI1

FMI3

FMI4

FMI5

FMI14

FMIDescription:

•Datavalidbutabove

normaloperational
range-Mostsevere
level

•Datavalidbutbelow

normaloperational
range-Mostsevere
level

•Voltageabove

normal,orshorted
tohighsource

•Voltagebelow

normal,orshorted
tolowsource

•Currentbelow

normaloropen
circuit

•Specialinstructions•Aftertreatment

FaultCondition:

•Lowsidecircuit

shortedto+

•Shorttoground

•Lowsidecircuit

open

•Circuitshorted+•MILilluminated•AftertreatmentDEFdosingpump

•Circuitshorted–•MILilluminated•AftertreatmentDEFdosingpump

•Opencircuit•MILilluminated

DieselExhaust
Fluid(DEF)Doser
cloggedorhose
clogged

Possible
Symptoms:

PossibleCause:

•MILilluminated•AftertreatmentDEFdosingpump

assembly

•MILilluminated•AftertreatmentDEFdosingpump

assembly

assembly

assembly

•AftertreatmentDEFdoser

•YellowCheck

lampilluminated

•MILilluminated

•YellowCheck

lampilluminated

•AftertreatmentDEFdosingpump

assembly

•AftertreatmentDieselExhaustFluid

(DEF)Doserclogged

•Hoseclogged

71

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN5394,AftertreatmentDieselExhaustFluid(DEF)DosingValve
–MID128PSID90

Codes(DTCs)

Typeof
fault:

FMI1

FMI17

FMIDescription:

•Datavalidbutbelow

normaloperational
range

•Datavalidbutbelow

normaloperating
range-Leastsevere
level

FaultCondition:

•Dosingfailure

•Aftertreatment

DieselExhaust
Fluid(DEF)dosing
amounttoolowor
DEFquality

•Dosingfailure

•Aftertreatment

DieselExhaust
Fluid(DEF)dosing
amounttoolowor
DEFquality

Possible
Symptoms:

•MILilluminated

•NOxemissions

toohigh

PossibleCause:

•NOxsensor

•SCRcatalystmalfunction

•EGRmassowfailure

•SCRinlettemperaturesensor

•MILilluminated

•NOxemissions

toohigh

•NOxsensor

•SCRcatalystmalfunction

•EGRmassowfailure

•SCRinlettemperaturesensor

ECMSPN5443,Aftertreatment1HydrocarbonDosingSystem–MID128
PPID329

Typeof
fault:

FMI2

FMI7

FMIDescription:

•Fuelpressurefault•Aftertreatment

•Mechanicalsystem

notresponding
properly

FaultCondition:

FuelPressure,not
withinexpected
range

Possible
Symptoms:

•Regenerationnot

possible

•Regenerationnot

possible

PossibleCause:

•Fuelpressure

•Fuelline(s)

•AftertreatmentHydrocarbonDosing

ModuleFuelpressurefault

•Fuelline(s)

•Obstructed/dirtyaftertreatment

hydrocarbondoser

•AftertreatmentHydrocarbonDosing

Module

FMI8

FMI10

•Fuelleakage•Aftertreatment

FuelPressure,not
withinexpected
range

•Abnormallylarge

variations

•Regenerationnot

possible

•Regenerationnot

possible

•AftertreatmentHydrocarbonDosing

Module

•Fuelline(s)

•Obstructed/dirtyaftertreatment

hydrocarbondoser

•AftertreatmentHydrocarbonDosing

Module

FMI13

•Calibrationvalueout

ofrange

•Airpressure,not

withinexpected
range

•Regenerationnot

possible

•Lowairpressure

•AftertreatmentHydrocarbonDosing

Module

72

Group28

EngineControlModule(ECM)DiagnosticTrouble

ECMSPN5485,AftertreatmentDieselExhaustFluid(DEF)PumpOrice
–MID128PSID121

Codes(DTCs)

Typeof
fault:

FMI11

FMIDescription:

•Rootcausenot

known

FaultCondition:

•Aftertreatment

DieselExhaust
Fluid(DEF)bleed
oriceclogged

Possible
Symptoms:

•MILilluminated

•YellowCheck

•NoAftertreatment

PossibleCause:

•Bleedorice

•AftertreatmentDieselExhaustFluid

lampilluminated

DieselExhaust
Fluid(DEF)
dosing

(DEF)pressuresensor

73

Lastpage

PV776-89047073()052011©MackTrucks,Inc.,2012

MackTrucks,Inc.

Greensboro,NCUSA

http://www.macktrucks.com