99 volvo i have fault code for the 1939 but it ohms out at 62 but the yellow has 3.88 volts when trk is running and green has .44 fault code mid 128 sid 231 fmi 12 mid 144 sid 231 fmi 12 andfmi 2 mid 136 sid 231 fmi 6 all active says bad device but which one is bad