Rear Parking Assist Control Module
WARNING: This page is about a different car, the 2013 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
The object alarm module provides an 8V reference and a low reference to the Rear Object Sensors. The Rear Parking Assist Control Module receives individual signals from each of the sensors and determines the location and distance of an object based on these inputs. When an object is detected, the Rear Parking Assist Control Module will send a signal to an external speaker to provide an audible alert.