WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
The EVAP canister vent shut valve is on the EVAP canister.
The EVAP canister vent shut valve controls venting of the EVAP canister.
Fig 1: Sectional View Of EVAP Canister Vent Shut Valve