If you have 120 volts coming off connector P1 Pin 3 pink wire and you do not have that same 120 volts in freezer then I would recommend doing a continuity test from beginning to end on that pink wire as I have found an open circuit on that wire before. Test 120v to neutral in freezer while in defrost mode if it's not there you may have an open circuit in the liner on that pink wire. I've also found an open circuit in the liner on a sensor wire leading to the freezer on a Whirlpool french door refrigerator.