Three-Way Solenoid Valves
- Disconnect hoses and electrical connector from solenoid valve and remove valve from vehicle. Turn valve so air filter end is facing down. Connect hose to port A and blow into port. Ensure air passes from filter. See Fig 1 .
- Using a jumper wire, apply battery voltage to solenoid valve. With voltage applied, blow into port A. Air should pass from port B. If valve does not operate as outlined, replace solenoid valve.