Description And Operation: Description
WARNING: This page is about a different car, the 2017 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.
The accurate position of the rotor must be known at all times to ensure maximum output control of the motor. Like the CMP sensor on the engine, it detects the position of the rotor in the motor.
Courtesy of KIA MOTORS AMERICA, INC.