In their first league match ever, against Ljungskile SK away at Skarsjövallen on April 22, 2002, in Division II (Sweden's third league at that time) they won 1–0 and the historic goal scorer was Michel Berndtsson when he scored the game winner in the 79th minute.
In their first ever home game, April 28, 2002, against Askims IK, FCT won 1–0. A local newspaper Trollhättans tidning paid for all the spectators; the attendance was 3,083 people
June 6, 2002, the supporter club FCT Black Support was founded.
On September 26, 2002, FCT defeated Askims IK away with the score of 3–1, that secures the league win, and qualification against Falkenbergs FF awaited for a place in Superettan in a double-meeting. October 12, 2002, the home game against Falkenberg resulted in a 3–2 win. A week later on October 19, FCT was promoted to Superettan when Henrik Bertilsson (former Allsvenskan and professional player) headed in the 2–1 goal.
At the beginning of the 2004 season, Jonas Olsson took over as coach and remained at that position until the 2006 season had ended. His successor Lars-Olof Mattsson has coached the Swedish U21 team, Degerfors IF and Ljungskile SK, when they won promotion to Allsvenskan for their first time in 1996.