On my rav4 from 1997y, the charcoal canister is located in the engine compartment, bellow the air intake resonator.
See this thread: http://www.rav4world.com/forums/85-4-1-faults-fixes/91205-please-help-me-identify-part.html
See this thread: http://www.rav4world.com/forums/85-4-1-faults-fixes/91205-please-help-me-identify-part.html