BSI Brain

Hello friends, my 307 1.4 gasoline car has been working very hard for the last 2-3 days, this morning it did not work again and I was pulled into the industry with the tractor. I hope that if I have friends who have made the electrical connection from somewhere again from BSI, is this a healthy thing or had a similar complaint, I would like your help.

What is the petrol relay doing in BSi? It is the relay on the front fuse panel. I think they should detect the fault thoroughly.