Freezer and Fresh Food Not cold at top

My fridge has not been working properly. The compressor and the compressor fan are running, and the evaporator coils are frosted. The Freezer and the Fresh Food sections are freezing at the bottom of the compartments, but the tops of the sections are warm. The Fresh Food door is opening, but the evaporator fan is not working. I got the Service Manual off of another post. In going through it, I have determined that more than 12 VDC is being applied to J2 pins 3 and 8 and the resistance of the motor from this connector, on those leads is 800 Ohms. When I measure the resistance of the evaporator fan motor at the motor connector, I get a reading of 2 KOhms. According to the diagnostic chart, I need to "Repair wiring harness".

First, is this the correct diagnosis, or is there something else that I need to look at? Second, all of the terminals in the connectors look good, so how do I repair the harnesss?

Any help would be appreciated.