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Home >> Saturn >> 2001 >> SW2 Standard >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Control System - Theory & Operation >> Ignition System >> Computer Controlled Coil Ignition >> Fuel Control Signal
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Fuel Control Signal

In addition to the RPM reference (18X) signal and fuel sync (camshaft) signals generated by the ICM, a fuel control reference signal must also be passed on to the PCM in order to inform PCM proper signals are being generated to the IC module. The fuel control signal is generated by the ICM from calculations involving signals from the 18X and the 3X pulse rings.

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