User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
FMI5
•Currentbelow
normaloropen
circuit
•Opencircuit•Yellowelectronic
malfunctionlamp
illuminated
•Enginewillnot
start
•Faultystarterrelay
•Faultharness
ECMSPN729,IntakeAirHeater(IAH)1–MID128SID70
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI3
•Voltageabove
normal,orshorted
tohighsource
•Circuitshorted+,
measuringline
•Yellowelectronic
malfunctionlamp
illuminated
•Faultypreheatrelay
•Faultyintakeairheater(IAH)1
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Circuitshorted–,
measuringline
•Yellowelectronic
malfunctionlamp
illuminated
•Faultypreheatrelay
•Faultyintakeairheater(IAH)1
FMI5
•Currentbelow
normaloropen
circuit
•Opencircuit•Yellowelectronic
malfunctionlamp
illuminated
•Faultyintakeairheater(IAH)1
ECMSPN730,IntakeAirHeater(IAH)2–MID128SID71
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI3
•Voltageabove
normal,orshorted
tohighsource
•Circuitshorted+,
measuringline
•Yellowelectronic
malfunctionlamp
illuminated
•Faultypreheatrelay
•Fautlyintakeairheater(IAH)2
FMI4
•Voltagebelow
normal,orshorted
tolowsource
•Circuitshorted–,
measuringline
•Yellowelectronic
malfunctionlamp
illuminated
•Faultypreheatrelay
•Fautlyintakeairheater(IAH)2
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