hey guys, i dont really know more about ATTS so.... my ATTS light is on and i dont know why, is there many reasons for it to get on or ?? and i heard that you can change the fuel of ATTS and i dont even know where its located on the engine. more detail will help for my bad english

First, you need to pull the code and see what the problem is. Search on here or on google about a DIY on pulling codes. It's been covered thousands of times. Once you find out the code then you can go from there.