User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
MID233FaultcodesentbyMID128Enginecontrolunit(cont’d.)
FMI9
•Abnormalupdate
rate
•Missingsignal
fromNOxsensor
•MILilluminated
•Yellowelectronic
malfunctionlamp
illuminated
•LossofcommunicationfromNOx
sensorECUandEngineControl
Module(ECM)
FMI11
•Rootcausenot
known
•NOxsensor
measuresnear
zeroforlongtime
withhighload
•MILilluminated•FaultyNOxsensor
FMI12
•Badintelligent
deviceor
component
•NOx-sensorsignal
corrupt(incorrect
value)
•MILilluminated•FaultyNOxsensor
FMI13
•Outofcalibration•NOx-sensor
activation
(incorrectvalue)
•MILilluminated•FaultyNOxsensor
FMI14
•Specialinstructions•Missingsignal
fromsensordueto
batteryvoltage
•MILilluminated•VoltagetoNOxsensoristoohighor
toolow
•Faultyharnesstosensor
FMI31
•Conditionexists•InletNOxsensor
error
•Mismatchbetween
sensors
•MILilluminated•EngineoutNOxhigh
•FaultyNOxsensor
•AftertreatmentDieselExhaustFluid
(DEF)quality
ECMSPN3245,AftertreatmentDPFOutletTemperature–MID128PPID
436
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI0
•Datavalidbutabove
normaloperational
range-Mostsevere
level
•Temperature
criticallytoohigh
•Lowenginepower•RestrictedCatalyst
•Intakeairleak
•Faultysensor
FMI2
•Dataerratic,
intermittentor
incorrect
•Sensoris
notrational
(plausibility)
•MILilluminated
•Regenerationnot
possible
•Faultysensor
•Exhaustsystemleak
•Faultyharnessconnectorsor
connections
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Shorttogroundon
themeteringside
ofthecircuit
•MILilluminated
•Regenerationnot
possible
•Faultyharness
•Faultysensor
•Aftertreatmentcontrolmodule(ACM)
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