What is the cause of overheating and burning out when Jetta throttle works normally?

Let's first look at the return speed of the throttle. Is it because the throttle return spring is too soft or the cable is stuck? The camshaft position sensor is Hall type. Check the plug. If you have a certain practical ability, you can test it. One of the three lines has a voltage of 5V to ground. A ground wire and a signal wire. Finally, the camshaft position sensor is broken.