Schematic Circuit Diagram, Bus Diagnosis

The following block diagram provides an overview of the control modules and bus systems deployed in the vehicle.

Fig 1: Junction Box Electronics - Block Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

• JBE (Junction Box Electronics)
  • control module with connection to K-CAN, PT-CAN and diagnosis lead
• MOST GW is a placeholder for e.g. CCC (Car Communication Computer), M-ASK (Multi Audio System Controller), RAD (radio) or CHAMP (Central Head Unit and Multimedia Platform)
  • control module with connection to K-CAN and MOST
• DSC (Dynamic Stability Control)
  • control module with connection to F-CAN and PT-CAN
• K1... Kn: control modules on the K-CAN
• M1... Mn: control modules on the MOST
• F1... Fn: control modules on the F-CAN
• PT1... PTn: control modules on the PT-CAN