Circuit/System Description
WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
The object sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object on the side of the vehicle, in the vehicle's blind spot. The front and rear parking assist control module supplies 9 V to the object sensors via the 9 V reference circuit and provides ground via the low reference circuit. The front and rear parking assist control module triggers the sensors in a sequential loop. After each sensor transmits, the front and rear parking assist control module uses the sensor echo received through the signal circuit to calculate the distance and position of an object.