Central Gateway Module (ZGM)

The ZGM is installed in the module carrier behind the glovebox. The Central Gateway Module does not contain any sensors and is not responsible for deploying any airbags or pyrotechnic devices.

Fig 1: Identifying Central Gateway Module (ZGM)

Courtesy of BMW OF NORTH AMERICA, INC.

The ZGM has the task of coordinating the various data speeds of the telegrams between the buses and directing messages between the individual bus systems. The following busses are connected to the ZGM:

• byteflight 
• K-CAN-System
• PT-CAN and PT wake-up line
• Diagnosis bus

Fig 2: Central Gateway Module (ZGM) Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.