BAS Brake Application Function: Notes
The functions of the BAS brake servo (A7/7) are controlled using the components of the electric/electronic system. In model 202, the voltage supply for the BAS control module is via the relay module (K40).
NOTE:
In all vehicles with engines 112, 113, the BAS control module function is integrated in the ESP control module (N47-5).
The BAS control module receives input signals from the following components:
- ME control module (via CAN data line)
- Traction system control module (via CAN data line)
- BAS diaphragm travel sensor
- BAS release switch
In the BAS control module, the input signals are converted into output signals for the following components:
- BAS solenoid valve
- BAS/ESP malfunction indicator lamp (via CAN data line)
On the basis of the input signals, the BAS (N48) or ESP (N47-5) control module decides which of the 3 operating modes: Normal operation, BAS pressure increase, or BAS pressure reduction, is to be activated.