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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EGR Control Solenoid: Description and Operation
The vacuum switching valve is mounted on the left side of the engine compartment and is electrically activated by the EGR controller. When specific conditions are met, the EGR controller sends an electrical ``On'' signal to the vacuum switching valve, opening a port on the valve and directing vacuum from the vacuum pump to the
EGR valve diaphragm.