EV 1 - Canister Purge Solenoid Function
^ Disconnect the vacuum hoses from ports A and B as shown in figure, and the electrical connector from the solenoid valve.
^ Blow air through port A and verify that no air exits from port B.
Evaporative Canister Purge Solenoid:
^ Apply 12 volts and ground as shown.
^ Blow air through port A and verify that air flows from port B.
^ Does the valve function properly?
YES -- Go to EV2. EV 2 Check For Liquid In Carbon Canister
NO -- Replace the EVAP canister purge solenoid.