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 Air Control Valve
The
PCM controls engine
idle speed by controlling current to two stepper coils contained within the idle air control valve assembly.
By controlling current to both of the coils, the
PCM can control engine
idle speed by allowing air to bypass the throttle plate.