Ethernet Port

As there were enough free pins in the diagnostic socket it was possible to integrate the Ethernet port in this socket.

This installation location is the optimal solution for the vehicle access. The further advantage lies in that D-CAN as well as Ethernet can be connected to BMW diagnostic and programming systems via one connection (ICOM A).

Fig 1: Installation Location Of Ethernet Port

Courtesy of BMW OF NORTH AMERICA, INC.

Five pins are used for the Ethernet port in the diagnostic socket.

These five lines are routed from the diagnostic socket to the central gateway module (ZGM).

One of the five lines transmits the activation signal. The remaining four lines are twisted pair and are used for data transmission.

Fig 2: Ethernet Transmission Data Between Diagnostic Socket And ZGM

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Identifying Diagnostic Socket Pinouts

Courtesy of BMW OF NORTH AMERICA, INC.