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)
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Idle Speed Control System
Crank throttle angle, deceleration throttle angle and engine
idle speed are controlled by an electric motor driven actuator which changes throttle angle by acting as a moveable idle stop. The ISC actuator is controlled by the ECU by providing appropriate signals to adjust throttle angle or idle speed for particular operating conditions. Electronic components for the ISC system are integral with the ECU.