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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temporarily or
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Secondary Air Control
A
solenoid is used to control the air control valve vacuum signal. The solenoid is controlled by the ECU based on engine speed, idle position and coolant temperature. The valve sends air to the exhaust manifold.