Interaction of systems (Mercedes-Benz Vito W639)

The ESP function is the highest priority function among those listed because its action is the most universal. This is expressed in the fact that in order to stabilize the car on the trajectory of movement, the system in ESP mode uses sensors and actuators of all the listed systems (ABS, ASR, MSR and EBV).

To implement the specified functions, the ESP system control unit (N30/4) receives the following signals as input information.

To determine the driver's intentions:

• steering angle sensor signal (B24/8);
• accelerator pedal position sensor signal (B37/3).

To determine the actual behavior of the car on the road:

• yaw rate and lateral acceleration sensor signal (824/15);
• brake pressure sensor signal (B34);
• wheel speed sensor signals:

- front left (L6/1);

- front right (L6/2);

- rear left (L6/3);

- rear right (L6/4).

The ESP control unit (N30/4) performs the following functions as a processor implementing pre-programmed algorithms.

• ESP function.
• ABS function.
• Traction Control System (ETS) function.
• Brake Assist System (BAS) function.
• Acceleration Regulation on Slippery Roads (ASR) function.
• Brake force distribution function between the axles (EBV).

Article based on data from the website: MERCEDESMAN.ru

In essence, the ESP system is an extended system that, in addition to its own specific functions, performs those functions that were previously performed by simpler, separate systems.

To achieve this, the ESP control unit (N30/4) interacts with both the brake control system and the engine management system (CDI) via the CAN C multiplex network responsible for engine management.