what is the relearn procedure for the throttle body on 06 300 2.7?

Hello, Unfortunately, a professional scan tool is normally used to relearn the electrical parameters of the throttle body on that engine. You can try the key on, engine off method of pressing the accelerator to the floor for about one minute, then releasing it for one minute, but this is not guaranteed to work. It is more a general practice that allows the PCM to detect the start and stop points of the throttle body.