User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
ECMSPN4376,AftertreatmentDieselExhaustFluid(DEF)ReturnValve
–MID128PSID105
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI3
•Voltageabove
normal,orshorted
tohighsource
•Circuitshorted+•MILilluminated
•Notpossibleto
performafterrun
•Faultyharness
•Faultyconnector
•AftertreatmentDEFpumpassembly
failure
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Circuitshorted–
•Opencircuit
•MILilluminated
•Notpossibleto
performafterrun
•Faultyharness
•Faultyconnector
•AftertreatmentDEFpumpassembly
failure
FMI5
•Currentbelow
normaloropen
circuit
•Opencircuit•MILilluminated
•Notpossibleto
performafterrun
•Faultyharness
•Faultyconnector
•AftertreatmentDEFpumpassembly
failure
FMI7
•Mechanicalsystem
notrespondingor
outofadjustment
•Possible
mechanical
problemwith
aftertreatment
dieselexhaust
uid(DEF)return
valve
•MILilluminated
•Notpossibleto
performafterrun
•Mechanicalfault–DEFreturnline
restrictedbetweenDEFpumpand
DEFtank
•AftertreatmentDieselExhaustFluid
(DEF)pumpassembly
ECMSPN4752,EngineExhaustGasRecirculation(EGR)CoolerEfciency
–MID128SID282
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI7
•Mechanicalsystem
notrespondingor
outofadjustment
•LowEGRcooler
efciency
•MILilluminated•EGRcoolercloggedordamaged
ECMSPN4811,EnginePistonCoolingOilPressure–MID128PPID8
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI1
•Datavalidbutbelow
normaloperational
range-Mostsevere
level
•Pressurebelow
range
•Redengine
shutdownlamp
illuminated
•N/A
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