User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
ECMSPN639,SAEJ1939DataLink1–MID128SID231
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI2
•Dataerratic,
intermittentor
incorrect
•SAEJ1939highor
lowcircuitshorted
+
•SAEJ1939highor
lowcircuitshorted
–
•SAEJ1939high
orlowcircuitopen
•MILilluminated•Faultyharnessorconnector
ECMSPN641,EngineVariableGeometryTurbocharger(VGT)Actuator
1–MID128SID27
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI0
•Datavalidbutabove
normaloperational
range-Mostsevere
level
•EngineVariable
Geometry
Turbocharger
(VGT)actuator
temperatureoutof
range
•PossibleRed
engineshutdown
lampilluminated
(dependanton
severity)
•Yellowelectronic
malfunctionlamp
illuminated
•Possibleengine
derate
•N/A
FMI2
•Dataerratic,
intermittentor
incorrect
•EngineVariable
Geometry
Turbocharger
(VGT)actuator
hasnotseena
validcommandon
CAN2datalink
•Incorrectdata
•MILilluminated
•Yellowelectronic
malfunctionlamp
illuminated
•Lowboost
•Lowpower
•Nozzleopens
•Smokefrom
engine
•DisturbanceonCAN2datalink
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Shorttoground•MILilluminated
•Yellowelectronic
malfunctionlamp
illuminated
•Nozzlewillopen
resultinginlow
powerandlow
boost
•VGTactuator
willcontinue
toattemptand
maintaintarget
nozzleposition
•FaultyVGTactuatorconnector
•FaultyVGTactuatorharness
•Lowbatteryvoltage
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