I would go along the lines of a failed OVP relay .
To check it you remove the plastic cover that sits at the rear of your battery .It only pushes in there , so its easy to remove it.
Now your looking for a relay with a fuse sitting on the top .It will have a clear cover that hinges up and will let you replace the fuse if its blown .If the fuse id good ,then pull the relay out ,now give it a shake .Noise of something loose inside will tell you its
shot . Also check the pins on the bottom , thats if all other checks are fine .