Operation CHARM: Car repair manuals for everyone.
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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A/C Cut-Off Control System




An A/C cut-off system is used to improve idle smoothness after just starting the engine and to improve acceleration performance.

After engine has been started
The A/C is cut off for 2 sec. just after the engine is started.

Acceleration
The A/C is cut off upon wide open throttle acceleration for approx. 5 sec.