Passat 2001 1.9TDI engine AWX keeps blowing fuse 2:-15 amp by the ecm .BUT everytime the mechanic gets in and drives fuse doesn't blow -with me driving it will blow fuse twice in 500 yds!at first it gave 5 codes-all components check out .this fuse feeds 8 components-so we have split each component and put individual 10 amp fuses-it now blows just one and the codes come up for brake light switch and engine cooler motor blower speed one. anyone any ideas,me thinks possible ecm problem,but WHY can the mechanic drive it and it doesn't blow in 100 miles?