Canister Purge Control Valve: Testing and Inspection

NOTES:
^ The Charcoal Canister and Purge Control Valve are a combined unit and are not serviced separately. If the purge valve or cannister is defective the complete assembly must be replaced.
^ A faulty Purge Control Valve can result in increased emissions and / or poor driveability.

PURGE CONTROL VALVE TEST
1. Check vacuum hoses for proper routing.
2. Remove fuel vapor hose from canister and plug.
3. Remove purge hose from intake manifold.
4. Remove vacuum signal hose from purge control valve and install vacuum pump.
5. Blow on purge hose, passage should be closed. (If passage is open replace Canister assembly).
6. Apply vacuum (15 in/Hg) to signal port of purge control valve.
7. Blow on purge hose, passage should be clear. (If passage is closed replace Canister assembly).
8. If Purge Control Valve is operating properly, reinstall vacuum and vapor hoses.