check near the manifold on the passenger side of the vehicle. There is an e-brake cable and speedo cable that may have come off of their brackets and are touching the manifold. Otherwise that entire area where asll of your vaccuum hoses etc. are, take a peak around to see if anything else is touching, could be a groun wire on the opposite side as well. I would just start at the manifolds, and work my way around the exhaust system to see if there is anything out of place.

Hope you find it..

2014 FJ