Operation CHARM: Car repair manuals for everyone.
Home >> Cadillac >> 1982 >> DeVille V6-252 4.1L VIN 4 4-BBL >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Control Module >> Description and Operation
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

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.



pro multis · About Operation CHARM