User Manual

Group28
EngineControlModule(ECM)DiagnosticTrouble
Codes(DTCs)
ECMSPN636,CamshaftPositionSensor(CMP)–MID128SID21
Typeof
fault:
FMIDescription:
FaultCondition:
Possible
Symptoms:
PossibleCause:
FMI2
•Dataerratic,
intermittentor
incorrect
•PhaseError
-Incorrect
correlation
betweenCMP
andcrankshaft
position(CKP)
sensor
•MILilluminated
•Increaseinfuel
consumption
•Enginetiming
FMI3
•Voltageabove
normal,orshorted
tohighsource
•MissingSignal
fromCMPsensor
•OpenintheCMP
sensorcircuit
•Shorttobatteryin
theCMPsensor
circuit
•Shorttogroundin
theCMPsensor
circuit
•MILilluminated
•Possiblelossof
enginepower
•Increasedengine
starttime
•Faultyharness
FMI8
•Abnormalfrequency
orpulsewidthor
period
•NoisySignalfrom
CMPsensor
•OpenintheCMP
sensorcircuit
•MILilluminated
•Possiblelossof
enginepower
•Increasedengine
starttime
•FaultyCMPsensor
•Faultyharness
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