Structure and inner electrical connection

Depending on the series and model year, the controller (CON) is connected with a ten-pin and/or four-pin plug connection to the vehicle electrical system and K-CAN and/or K-CAN2.

The locator lighting (terminal 58g) for the controller is controlled by the footwell module (FRM) via K-CAN and/or K-CAN2 (depending on the series and model year).

The graphic below shows the power supply for the example of terminal 30B, basic version (optional equipment SA663 "Radio BMW Professional").

Fig 1: Vehicle Electrical System - Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

The graphic below shows the power supply on the example of terminal 30F, high version (optional equipmentSA606 "Business navigation system" or optional equipment SA609 "Professional navigation system"). Depending on the series and model year, the front power distribution box supplies the controller (CON) with terminal 30F or terminal 30B.

Fig 2: Controller Control Button - Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

Pin assignments 

The graphics above show 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.