Structure and inner electrical connection

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

The front electronic module (FEM) is connected to the vehicle with 9 plug connections.

To avoid confusion during connection, connector housings of the same color have different encoding. This prevents them being inserted in the wrong position inadvertently.

The input for the voltage supply of the FEM is a 1-pin plug connection.

Fuses for the following consumer units are installed in the fuse block of the Front Electronic Module (FEM):

Central locking drive
Outside door handle electronics
Powertrain of the power window regulators
Light operating facility, operating facility for the assist systems and steering column switch cluster
Rear Electronic Module (REM) and headlight driver module
Fanfare

Fig 1: Front Electronic Module - Circuit Diagram
Courtesy of BMW OF NORTH AMERICA, INC.

Item	Explanation
1	Front Electronic Module (FEM)
2	Central gateway module (ZGM = virtual control unit)

Pin assignments

The graphic above shows only the supply and bus connection. The current pin assignment is recorded on the wiring diagrams in the ISTA diagnosis system (Integrated Service Technical Application). Click on the component code in the wiring diagram to activate the "Installation location" and "Pin assignment" tabs.