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
Engine Control Module
The Engine Control Module
(ECM) is a hybrid design microprocessor based computer that is the main component of engine control system. Included in the tasks of the ECM is to control the
cruise control system. The ECM processes switch inputs indicating that the vehicle driver has requested cruise control. At this point, the ECM regulates throttle angle and other factors to maintain a constant vehicle speed. The ECM also receives inputs directly from the cruise/brake switch, and the brake switch to deactivate cruise control, and return vehicle control to the driver.