Charcoal Canister
WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
Charcoal canister is located under rear of vehicle. Plug Canister Drain Cut Valve (CDCV) port and purge solenoid valve port. See Fig 1 . Apply small amount of air pressure to fuel tank port on charcoal canister. If air leaks, replace charcoal canister.