Evaporative Emission (EVAP) Canister Purge Valve Inspection

1. Disconnect the electrical connector from the EVAP canister purge valve.
2. Using a Digital Multimeter (DMM) (1), measure the resistance of the EVAP canister purge valve (2) between both terminals. The resistance should be 28 to 36 ohms at 20°C (68°F).
3. Replace the EVAP canister purge valve if the resistance is not 28 to 36 ohms at 20°C (68°F). If the resistance is within specification, proceed to Step 4.
4. Disconnect the purge valve vacuum hoses from the intake manifold and the vacuum pipe from the EVAP canister.
5. Blow air into the purge valve vacuum hose that was disconnected from the vacuum pipe. Air should NOT pass through the EVAP canister purge valve and exit from the intake manifold hose.
6. Connect 12 volts DC to the terminals of the EVAP canister purge valve.
7. Blow air into the purge valve vacuum hose that was disconnected from the EVAP canister. Air should pass through the EVAP canister purge valve and exit from the intake manifold hose.
8. Replace the EVAP canister purge valve if the EVAP canister purge valve failed this inspection.
9. Connect the purge valve vacuum hoses and the electrical connector.