User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
ECMSPN4354,AftertreatmentDieselExhaustFluid(DEF)LineHeater1
–MID128PSID103
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI3
•Voltageabove
normal,orshorted
tohighsource
•Circuitshorted+•N/A•Faultyharness
•Faultyconnector
•AftertreatmentDEFlineheater1
failure
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Circuitshorted–•N/A•Faultyharness
•Faultyconnector
•AftertreatmentDEFlineheater1
failure
FMI5
•Currentbelow
normaloropen
circuit
•Opencircuit•N/A•Faultyharness
•Faultyconnector
•AftertreatmentDEFlineheater1
failure
ECMSPN4356,AftertreatmentDieselExhaustFluid(DEF)LineHeater3
–MID128PSID102
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI3
•Voltageabove
normal,orshorted
tohighsource
•Circuitshorted+•N/A•Faultyharness
•Faultyconnector
•AftertreatmentDEFlineheater3
failure
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Circuitshorted–•N/A•Faultyharness
•Faultyconnector
•AftertreatmentDEFlineheater3
failure
FMI5
•Currentbelow
normaloropen
circuit
•Opencircuit•N/A•Faultyharness
•Faultyconnector
•AftertreatmentDEFlineheater3
failure
ECMSPN4374,AftertreatmentDieselExhaustFluid(DEF)PumpMotor
Speed–MID128PSID87
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI1
•Datavalidbutbelow
normaloperational
range-Mostsevere
level
•Slowpumpspeed•MILilluminated
•NoAftertreatment
DieselExhaust
Fluid(DEF)
dosing
•Faultyharness
•Faultyconnector
•AftertreatmentDEFpumpassembly
failure
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