At Accurate Automotive, we understand the frustrations associated with electrical issues involving Honda and Acura vehicles. These Honda and Acura automotive circuits can be complicated and because of the utilization of multi-plex control units; multiple circuits can be affected, resulting (possibly) in many weird things happening all at once because of one failed control unit. However, many of the issues involving Honda and Acura factory circuits include a rodent. Mice and squirrel damage to both electrical wiring and fuel lines is quite common on later model Honda and Acura vehicles. This is due to a coating that is commonly used, which is made out of soy. Especially during the winter months (but also in the summer), mice will mistake that wire insulation or fuel line for food and chew a hole in it or chew it in two. In the above photo, directly above the index finger, and to the left of the lime green wire, a blue wire is chewed in two and the copper strands of the wire can be seen.
At Accurate Automotive, we use the Honda and Acura electrical schematics for troubleshooting wiring issues. Usually, if it's rodent damage, we will be able to find and fix it.
At Accurate Automotive, (in the situation indicated in the above photo) we soldered the wire back together with any additional 'shunt wire', applied shrinkable tubing over the wire repair to insulate it and then applied a tape (from Honda) which contains cayenne pepper - to deter rodents from returning to what they think is a food source.