Purge Control Solenoid Valve
WARNING: This page is about a different car, the 1995 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
Unplug purge control solenoid electrical connector. Ensure air cannot flow through solenoid valve vacuum ports. Connect 12 volts and a ground to solenoid valve terminals. Blow air through check valve. Air should flow through valve. Replace if valve does not operate as described.