First pusch the button and hold him.Than turn the ignition on 2.The sytem must check now.First all the lights will turn on in the speedo.You will see partnumbers etc after that it will turn the speedo to check it.
This is how it works here in Europe.I think it is the same in the States.
But i don't know if this is the way to check the check-control.
Otherwiselet the door open and drive with the car.If the CC is working it gives a sign that the door is not schut.Ore let your light on and take the key out.It will warn you.