no communication with tcm
 

Hello all,
My name is mike i have a 2010 300 awd 3.5l I just got the car put an aftermarket touch screen in that used original steering controls and all was well for three days then traction light and tranfercase notification and esp lights came on with engine light hooked up to my scanner and code p0101 witch is no communication with tcm check fuses and looked at wires and connectors swapped out tcm and still no change i am at a loss is there a way i can check wires at tcm for voltages and grounds
thanks

problem solved bad relay