Abbreviations
Note. All functions below are not available in all vehicles or vehicle models. The brake system can consist of only ABS or ABS including TRACS, STC, or DSTC.
| Function | Description |
|---|---|
| ABS (Anti-lock Braking System) | Anti-lock braking. Prevents wheels from locking when braking. |
| AYC (Active Yaw Control) | Stability control. Prevents oversteering and understeering with active braking. |
| BA (Brake Assistance) | Brake assistance. Boosts braking force in case of sudden heavy braking. Brake assistance is electronic for vehicles with DSTC, mechanical for others. |
| EBD (Electronic Brake Distribution) | Electronic distribution of braking force. Distributes braking force between front and rear brakes. |
| SC (Stability Control) | Stability control. Reduces engine torque to obtain increased lateral stability when the wheels spin at speeds from 0 km/h to top speed. |
| TC (Traction Control) | Traction control. Brakes spinning wheel from 0 km/h - top speed. |
| RSC (Roll over Stability Control) | Monitors the car's inclination angle and acts on the brakes if the car is at risk of rolling over. |
| System | Description |
|---|---|
| ABS (Anti-lock Braking System) | Anti-lock braking. Includes the functions ABS and EBD. |
| DSTC (Dynamic STC) | Dynamic stability and traction control. Includes the functions ABS, EBD, SC, TC and AYC. |
| STC (Stability and Traction Control) | Traction and stability control. Includes the functions ABS, EBD, SC and TC. |
| TRACS (Traction Control System) | Traction control system for four-wheel drive cars. Includes the functions ABS, EBD and TC. |
| Other Abbreviations | Description |
|---|---|
| BCM (Brake Control Module) | Name of control module for brake system (BCM). Includes functions such as ABS, AYC, EBA, EBD, SC, TC and RSC. |
| CAN (Controller Area Network) | Standardized protocol for serial communication between control modules. |
Scheme 38
System description
The brake system, with integrated EBD function, has undergone major changes compared with the previous models. The type designation is ABS Mark 20, manufactured by ITT (TEVES).
The most important changes are
- Diagonally split circuit brakes (LF+RR, RF+LR).
- Each wheel is individually controlled.
- New master brake cylinder (equal amounts of brake fluid in both circuits).
- Servo cylinder with pedal position sensor (The sensor is connected to the engine control module (ECM)).
- Hydraulic unit (two valves have been added to certain variants).
- New wheel speed sensors (Active sensors).
- The control module, connected to the network.
The system can be complemented with a stability and traction control, Traction control alternatively STC. Car/variant/market dependent, standard/option.
Common components for different car projects.
System overview
See System overview
See System Overview