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Home >> Buick >> 1982 >> LeSabre Estate Wagon V8-307 5.0L >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - 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.



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