The vehicle is equipped with ABS, a system, which is an integral part of the braking system, prevents one or more wheels from locking and slipping in all road surface conditions, irrespective of the intensity of the braking action, ensuring that the vehicle can be controlled even during emergency braking.The electronic system operates by regulating the braking pressure transmitted to the wheels preventing them from locking.The function is capable of guaranteeing the correct operation of the braking system even if there is a failure or malfunction with the ABS.The sensors are positioned on each of the four wheels and converse constantly with the ABS control unit providing data relating to the speed of each wheel and thereby recording locking situations.With the data collected the control unit is capable of controlling the solenoid valves which modulate the pressure of the hydraulic circuit, preventing the wheels from locking with the aim of restoring the vehicle to good grip conditions and improving braking distances and driveability.The sensors are the "active" type, supplied by the control unit; they consist of a magnetic resistive receiver with a magnetic codifier incorporated in the hub bearing so that the signal is less affected by electromagnetic interference and variations in temperature.The ABS is integrated with the EBD function (Electronic Braking Force Distribution) which allows the brake force to be distributed between the front and rear wheels.The control unit is equipped with a self-diagnostic function: when an error in the ABS function is detected, the warning light comes on and the system is deactivated at the same time. In these conditions the vehicle brakes using the traditional system only.The ABS failure is signalled by the dedicated warning light in the instrument panel coming on together with the message shown on the multifunction display (where fitted). However, a failure of the EBD system is signalled by the ABS warning light and the insufficient brake fluid and handbrake applied warning light coming on.For more details See descriptions 3340 ANTI-LOCK BRAKING SYSTEM (ABS) The control unit collects the signals coming from the sensors located on the drive wheels, processes them and extracts the average rotation speed value and calculates the speed of the vehicle using a value for the circumference of the wheels stored in the actual control unit.Later on, the Body Computer receives this information from the control unit through a dedicated frequency signal (VSO) and makes it available via the CAN to the various nodes involved.The control unit has several power supplies depending on the various braking system electrical devices it controls, each line being protected by a dedicated fuse. It also receives an ignition-controlled power supply (INT).