Your model refrigerator uses condenser fan motor part # WR60X10220
It has a quick disconnect plug on it where you could check for voltage.
If you have voltage to the fan motor and the motor does not run the motor is bad and needs to be replaced.
If you don't have voltage going to the motor then I would suspect the control board is bad.
You could remove the board and inspect it for burnt spots or bad solder joints.
Your model refrigerator uses control board part # WR55X10942
Let us know what you find or if you have any other questions.