July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Pressure Regulator Control Solenoid Valve

Disconnect hose from solenoid. Blow through port "A". See Fig 1 . Air should flow from port "B". Remove connector from valve.
Apply battery voltage and ground to proper terminals. See Fig 1 . Blow through port "A". Air should flow through air filter.

Fig 1: Testing Pressure Regulator Control Solenoid Valve

Courtesy of MAZDA MOTORS CORP.