Circuit/System Description
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
The K124 Image Processing Module has 2 processors. The Ethernet connection between 2 processors is internal to the module. If one processor loses communication with the other processor, the module will need to be replaced. No external circuit diagnosis is involved.