Power, Ground, Serial Data, Rear and Side Object Sensors, Controls and Display (UD7/UDQ)
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.
Fig 1: Power, Ground, Serial Data, Rear and Side Object Sensors, Controls and Display (UD7/UDQ)