When installing a fuse of a larger capacity, it would not blow as easily as a higher rating. It might cause the item(s) that it is supposed to protect to blow instead. That is the reason fuses must not be of a higher rating than it is recommended.
The ECU fuse is for the Engine control and many other sub components. Without it the vehicle would not start.
Sunday, October 26th, 2008 AT 7:13 PM