Natural Vac Leak Detection ASSY.: Description
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
The natural Vacuum Leak detection (NVLD) system is mounted on top of the EVAP canister that is mounted on the fuel tank. See Fig 1.