Electronic Brake and Brake Test Switch
WARNING: This page does not describe the selected car, but rather 43 other vehicles, including the 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, and 2005 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.
The GS 20 monitors the brake pedal position to activate sport mode, down hill recognition and for the shift lock operation. The control module receives both the brake and brake test hall effect sensor signals. When pressed:
- The brake light switch pulls a standing voltage in the GS 20 low.
- The brake test switch provides a high signal to a circuit monitor in the GS 20.