Have pulled ecu out, doesn't smell burnt pulled, cover off and looks ok on inside and is dry. Have swapped ecu to std unit to check but still blew the when ignition turned on. Have bypassed fuel pump relay to test pump and pumps works fine. Checked fuse block with multimeter found that the fuse is shorted to earth (where earthed is don't know). Been looking for wiring diagrams to help but have found anything yet.