Generator Current Sensor
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
The generator current sensor is attached to the generator B+ cable. The PCM supplies a 5-volt reference and ground to the generator current sensor. The generator current sensor is a Hall-effect sensor that supplies an analog feedback signal to the PCM.