User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
FMI1
•Datavalidbutbelow
normaloperational
range
•EGRowistoo
low
•MILilluminated•FaultyEGRsystem
•CloggedEGRcooler
FMI16
•Datavalidbutabove
normaloperating
range-Moderately
severelevel
•EGRowistoo
high
•MILilluminated
•Exhaustsmoke
•FaultyEGRsystem
•Faultyharnessorconnector
FMI18
•Datavalidbutbelow
normaloperating
range-Moderately
severelevel
•EGRowistoo
low
•MILilluminated•FaultyEGRsystem
•CloggedEGRcooler
•Faultyharnessorconnector
ECMSPN2791,EngineExhaustGasRecirculation(EGR)ValveControl–
MID128SID146
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI3
•Voltageabove
normal,orshorted
tohighsource
•StuckEGRvalve
•EGRvalvecircuit
shorted+
•EGRvalvecircuit
shortedto–
•MILilluminated
•Enginederate
•Faultyharnessorconnector
•FaultyEGRvalve
FMI5
•Currentbelow
normaloropen
circuit
•OpenEGRvalve
circuit
•MILilluminated
•Enginederate
•Faultyharnessorconnector
•FaultyEGRvalve
ECMSPN2836,BatteryPotential/SwitchedVoltage–MID128PSID49
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI3
•Voltageabove
normal,orshorted
tohighsource
•Batteryvoltage
toohigh
•N/A•Faultycaborchassisharness
•Chargingsystemfault
•Externalcharger
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Batteryvoltage
toolow
•Starterwillnot
crank
•Faultycaborchassisharness
•Chargingsystemfault
•Battery
•Fuse
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