Where is the C-position sensor of Mercedes-Benz accelerator?

The C position sensor of Mercedes-Benz throttle is installed on the throttle body, one side of the throttle shaft. The throttle position sensor is installed on the throttle body. With the change of throttle opening and the rotation of throttle shaft, the brush in the sensor slides or the guide cam rotates, which converts the angle signal of throttle opening into an electrical signal and sends it to ECU.