Expo AWD L4-2350cc 2.4L SOHC 16 Valve (1993)
OPERATION
The EGR control solenoid is a duty-cycle type solenoid. It has a valve that opens and closes the vacuum source line to atmosphere many times per
second. This allows only a certain amount of ported vacuum to be applied to the EGR valve, thereby controlling the amount of EGR operation. The ECU
opens and closes the negative circuit and the control relay supplies the positive circuit.
