2009 Prius. I am looking up from under the car, the oil filter is to my right. On the left there are two coolant lines going into the transmission. There is a black electrical conduit going from left to right, it has a junction above the coolant lines...that junction is crumby, looks like it has been chewed on, and I see white, probably white wires. This junction goes to a gray plastic part (sensor??) that is bolted to the trans. What is this sensor and has anyone had experience trying to fix a damaged junction like this? Years ago the protective shield under the car engine was lost. Any help is appreciated. I can try to get a pic. thanks.