In the game Tales of Symphonia where is Maxwell located or what do you have to do to find it

In the floating city, Exire, in Tetha'alla. His seal (perhaps no seal, the specific place where he is) is beyond the top floor of the house with three floors. You have to find your way around the first house you see from the three floor room, you will find a long "road" to his place. Before you can actually talk to him and so on, you have to make a pact with the Spirits of Earth, Wind, Fire and Water and also Origin to prove your "ready". After this you are ready to make a pact with the Spirit that controls matter...