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

EGR Control Solenoid: Description and Operation

OPERATION

The EGR solenoid is duty control type solenoid valve. It controls EGR by regulating ported negative pressure to the throttle body A port.

Power supply from the battery is sent through the MFI relay to the EGR solenoid. When the engine control module turns off the power transistor inside the module, current no longer flows through the solenoid coil windings and EGR valve ported vacuum passes back to the throttle body.