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Home >> Oldsmobile >> 1983 >> Delta 88 V6-231 3.8L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Control Module >> Description and Operation
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Ignition Control Module: Description and Operation

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