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
Minimum Function System (W/Vacuum Adv. Distributor)
OPERATION On minimum function systems, the ECM receives engine RPM information from the
distributor "TACH" terminal through a filter. This information is used to determine
air/fuel mixtures and to control air management operation. Test equipment must only be connected on distributor side of filter.