User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
ECMSPN4334,AfterteatmentDieselExhaustFluid(DEF)DosingAbsolute
Pressure–MID128PPID273
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI1
•Datavalidbutbelow
normaloperational
range-Mostsevere
level
•DEFsystem
leakagedetected
•MILilluminated
•NoAftertreatment
DieselExhaust
Fluid(DEF)
dosing
•DEFpump
•DEFhose
•AftertreatmentDEFdosing(injector)
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•ShortCircuit-•MILilluminated
•NoAftertreatment
DieselExhaust
Fluid(DEF)
dosing
•DEFpumpassembly
FMI5
•Currentbelow
normaloropen
circuit
•ShortCircuit+
•OpenCircuit
•MILilluminated
•Yellowelectronic
malfunctionlamp
illuminated
•NoAftertreatment
DieselExhaust
Fluid(DEF)
dosing
•DEFpumpassembly
ECMSPN4339,AftertreatmentSCRFeedbackControlStatus–MID128
PSID90
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI0
•Datavalidbutabove
normaloperational
range-Mostsevere
level
•Adaptationtoo
high
•N/A•NOxsensor
•AftertreatmentDieselExhaustFluid
(DEF)dosingsystemfailure
FMI1
•Datavalidbutbelow
normaloperational
range-Mostsevere
level
•Adaptationtoolow•N/A•NOxsensor
•AftertreatmentDieselExhaustFluid
(DEF)dosingsystemfailure
•DEFquality
FMI10
•Abnormalrateof
change
•Adaptationtoo
high
•N/A•NOxsensor
•AftertreatmentDieselExhaustFluid
(DEF)dosingsystemfailure
FMI12
•Badintelligent
deviceor
component
•Adaptationtoolow•N/A•NOxsensor
•AftertreatmentDieselExhaustFluid
(DEF)dosingsystemfailure
•DEFquality
78