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Home >> Chevrolet >> 1982 >> Cavalier L4-112 1.8L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Description and Operation >> Distributor Reference Pulses
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Distributor Reference Pulses

PURPOSE
The "R" terminal on the 7 terminal ignition module provides reference pulses to the ECM indicating engine RPM and crankshaft position.
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