Lancia THESIS CONNECT Owner's Handbook Manual - 246

246

ABS

GENERAL

If this is the first car with ABS you

drive, get familiar with it by some

preliminary “driving tests” on poor

grip roadbeds, obviously under safe-

ty conditions and in compliance with

the traffic regulations of the Country

you are driving in. Read carefully

the following instructions.

The ABS (wheel anti-locking) sys-

tem prevents wheel locking and con-

sequent slipping in all road surface

conditions. This ensures greater con-

trol, as it is possible to steering and

brake at the same time, and reduces

braking space.

If the road conditions decrease the

friction coefficient (i.e. due to the

presence of water, snow, ice, etc.) a

wheel may slip; in this case, the

wheel does not ensure correct decel-

eration or the possibility of main-

taining the running direction and

the ability to steer. Here, the ABS

system comes into operation, elimi-

nating hydraulic pressure only from

the brake caliper of the locked wheel

and, as soon as the latter start spin-

ning again, brakes it again, thus

ensuring optimum braking and car

driveability.

EBD (ELECTRONIC BRAKE-

FORCE DISTRIBUTOR)

The car is equipped with an elec-

tronic brakeforce distributor (EBD)

which, by means of the ABS control

unit and sensors, makes it possible

to optimally distribute the braking

force between the front and rear

wheels, thus avoiding car skidding

in the most difficult situations.

ABS OPERATION

The electronic control unit receives

and processes the signals from the

brake pedal and from the four sen-

sors on the wheels. It consequently

controls the hydraulic system so to

decrease, hold or increase the pres-

sure in the braking circuit of every

single wheel, and prevent locking.

The main components of the ABS

system are:

- an electronic-hydraulic control

unit, which processes the signals

from the various sensors and per-

forms the most appropriate opera-

tions by acting on the solenoid

valves

- four sensors which detect the

rotation speed of every single wheel

- a pump provided with pressure

switch, to restore brake fluid pres-

sure.

IMPORTANT A slight pulsation of

the brake pedal may be felt when

the ABS system comes into play.