•  Vent side port of solenoid valve is connected to the EGR valve diaphragm through EGR control solenoid valve, and the vacuum side port of solenoid valve is connected to vacuum pump.

•  Solenoid valve consists of a solenoid coil, spring, plunger and air filter.

•  EGR solenoid valve increases the angle of the valve opening by increasing vacuum on EGR valve via the EGR control signal (duty signal).

•  EGR solenoid valve decreases the angle of the valve opening by releasing vacuum on EGR valve via the EGR control signal (duty signal).