Solenoid Valve

Disconnect negative battery cable. Remove solenoid valve. Apply air pressure to port "B". See Fig 1 . Air should flow from "C". Using fused jumper wires, apply battery voltage to solenoid valve terminals. Apply air pressure to port "B". Air should flow from port "A". Replace solenoid valve as necessary.

Fig 1: Identifying Solenoid Valve Ports

Courtesy of MAZDA MOTORS CORP.