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Post Info TOPIC: FI ignition failures (C24 ... C27)
Gof


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FI ignition failures (C24 ... C27)


Hi!

I'm wondering... how does ECU determine that the ignition on one coil failed? Do you know what exactly does it measure? Coil resistance is OK, but on high RPMs I have misfires and ECU gives me C25 and C26 codes - how does it know if there was a misfire?



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I don;t know for sure, but It probably looks for a flyback signal or the collapse of the voltage from coil saturation.

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