Tracker 97 Fuel Injection Fuse Blowing

I am hoping someone will be able to assist me with a problem I am having with my Tracker 4x4 97. The fuse for the Fuel Injection is blowing which prevents the vehicle from starting. The problem is determining what is causing the fuse to blow. Several times I have been able to change the fuse and the vehicle will start again. Each time the fuse has blown it has been when I have put the vehicle in reverse to back out of a parking area. Looking forward to some assistance. Thanks very much.