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 Timing Control
PURPOSE To provide the proper ignition timing for all engine operating conditions.
OPERATION The
Engine Control Module (ECM) contains memories for basic ignition timing at various engine speeds and manifold pressures (engine load). Ignition timing is also adjusted for coolant temperature. The ignition timing control is electronic with no vacuum or mechanical distributor controls.