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

Computers and Control Systems: Description and Operation

The computerized engine control system is used to control fuel, ignition, emission control system and other components. The system monitors engine and vehicle operating conditions and adjust the engine and vehicle control systems to provide maximum operating efficiency, resulting in reduced exhaust emissions.