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 spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Ignition Control Module: Description and Operation
All engine timing and spark distribution are electronic with no moving parts. During basic operations, the
Powertrain Control Module (PCM) determines the ignition timing. The
ignition control module (ICM) is no longer a stand alone component.