1. Remove the charcoal canister. (See CHARCOAL CANISTER REMOVAL/INSTALLATION [LF].)
2. Plug the EVAP leak detection pump side and purge solenoid valve side of the charcoal canister.
3. Inspect for air leakage when blowing air by mouth from the fuel tank side.
If air leaks, replace the charcoal canister. (See CHARCOAL CANISTER REMOVAL/INSTALLATION [LF].)