This system, in addition to the normal anti-lock and brake distribution functions controlled by the ABS with EBD, also carries out the following functions:
acceleration slipping adjustment (A.S.R.)
adjustment of the engine braking torque (M.S.R.)
locking the differential through action on the brakes (T.C.).
These functions are carried out through action on the drive torque and the application of a braking force on one or both the drive wheels.If, during acceleration, one or both the drive wheels tend to slip, the ABS control unit asks the engine management control unit to reduce the torque transmitted to the wheels and, almost at the same time, without any intervention by the user, brakes the wheel or wheels.If, in the case of strong deceleration, the wheels tend to lock, the ABS control unit requests the engine management control unit to adjust the engine braking torque in order to prevent the instability of the vehicle.The system can be excluded by activating the button in the centre console.The LED in the button comes on and the message is shown in the DOT matrix display in the instrument panel signalling that the ASR/MSR system has been switched off.The warning light in the button coming on and the repetition on the DOT matrix indicates that the system has been switched off due to a fault recorded by the control unitThe intervention of the ASR/MSR is signalled by the flashing of the warning light in the instrument panel.Each time the vehicle is started up the ASR/MSR function is activated even if the function was switched off when the vehicle was switched off.
COMPOSITION
Structure
The system consists of:
a specific electronic control unit integrated with the electro-hydraulic control unit
an electro-hydraulic control unit that modulates the pressure acting on the brakes, independently of the action by the user, by means of twelve solenoid valves