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
Dual Plug Inhibit System
DPI is a function of the EEC IV used when the vehicle is started. During engine cranking, the ignition module will only fire
spark plugs on the righthand side of the engine. When the engine has started, the EEC IV sends a signal to the DIS module, initiating normal plug operation.