EGR Control Solenoid: Description and Operation

EGRC-Solenoid Valve (For California models)
EGR Valve and Canister Control Solenoid Valve (For non-California models) (DTC: P1400)
The EGRC-solenoid valve responds to signals from the ECM. When the ECM sends an ON (ground) signal, the coil in the solenoid valve is energized. A plunger will then move to cut the vacuum signal [from the throttle body to the canister purge valve (for non-California models) and the EGR valve.
When the ECM sends an OFF signal, the vacuum signal passes through the solenoid valve. The signal then reaches the EVAP canister (for non-California models) and the EGR valve.