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
Secondary Air Control
Pressure applied to the
secondary air control valve is switched by the solenoid valve from intake manifold pressure to turbocharged pressure or vice versa. The solenoid valve motion is controlled by the ECU based on coolant temperature, air flow, engine speed and idle position information.