Catch Tank Inspection

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Remove the catch tank. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION .)
Plug the purge solenoid valve side into the catch tank.
Inspect for air leakage when blowing air using your mouth into the charcoal canister side.
- If there is air leakage, replace the catch tank. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION .)
  
  Fig 1: Identifying Catch Tank With Charcoal Canister And Purge Solenoid Valve Sides
  Courtesy of MAZDA MOTORS CORP.