EVAP Canister Purge Solenoid
Disconnect vacuum and electrical connections from solenoid. Apply low air pressure to port "A" of solenoid and ensure air pressure does not flow from port "B" of solenoid. See Figure. Using jumper wires, connect negative terminal to ground and apply 12 volts to positive terminal. Apply low air pressure to solenoid port "A" and ensure air flows through port "B" of solenoid. Replace solenoid if it does not test as specified.