If its a 2.0 diesel, that makes it a Freelander 1. Up to 2000 that just makes it a Freelander, from 2000 onwards that's the TD4 as the engines changed.
The Freelander2 is a 2.2 diesel and was released 2007. It may be a TD4 or an SD4.
You should qualify which car it is (ie F1 or F2) because they are very different beasts.