DTC B1603-00: CAN Bus Off (B-CAN): General Description
WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.
The DAU (Door Area Unit) uses B-CAN (Body CAN) to communicate with other modules to receive required data and transmit needed data. It controls driver door lock, power window, out side mirror operation.
And than the ICU sends and receives signals from each domains in the vehicle. ICU CAN channel is consist of chassis, powertrain, multimedia, body, information and diagnostic. ICU supports communication control for B-CAN, M-CAN, C-CAN, P-CAN, I-CAN and D-CAN.