narrowing down kitchenaid ice maker problem

Ice maker stopped working years ago,so ive been buying bagged ice and dumping it in hopper.
So ive decided to finally fix ice maker-

1.pulled solenoids and valves -cleaned screen in valves
2.made sure supply line wasnt frozen
3.tested module by jumping T and H , got ice maker to cycle ,and got led
output code of 3 pulses

i dont have a bail arm switch,So i assume i need a new module
I am about to pull old module and look for any problems

What problems do i look for in module,how do i test it,and could it be a thermostat problem?

i have found entire assembly on ******** for $44 dollars plus $14 shipping
Thanks for any response