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Home >> Pontiac >> 1983 >> J2000/Sunbird L4-112 1.8L >> 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.



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