So I have a 2000 Cherokee 4x4 with the 4.0, AW4 and 231 t case. It throws a P720 (output speed sensor circuit malfunction) code and the transmission shifts weird. Long story short I was just going to change the output sensor, but decided to check all the wires at the pcm first using the write up I found on here. However, when I tested pin 1 (input speed sensor ground) to pin 2 (input speed sensor signal) I get no resistance. When I check pin 3 (output speed sensor ground) to pin 4 (output speed sensor signal) I also get no resistance. All of the other resistance tests are in spec. I'm just curious if that means the sensors are bad, broken wires/poor connection or what else it could be? I was going to try to test the sensors themselves, but can't seem to find any specs for them specifically. Any help is appreciated.