brake sensor FIAT DUCATO 244 2005 3.G Owners Manual

68GETTING TO KNOW YOUR VEHICLE
IMPORTANTThe cruise control
can be engaged only with speeds high-
er than 40 km/h.
The device is automatically discon-
nected in one of the following cases:
– pressing the brake pedal;
– pressing the clutch pedal;
– inadvertently moving the automat-
ic gearbox selector to N. A special horn warns any people near
the vehicle that the driver is manoeu-
vring it.
Through four sensors located in the
bumper, the system detects the dis-
tance between the vehicle and possi-
ble obstacles; the driver is warned by
an intermittent acoustic signal with in-
creasing frequency, which is automat-
ically activated when the reverse gear
is engaged.CRUISE CONTROL
GENERAL FEATURES
The cruise control, with electronic
control, allows driving the vehicle at
a desired speed, without pressing the
accelerator pedal. This allows reduc-
ing the driving fatigue on motorways,
especially during long journeys, be-
cause the memorised speed is auto-
matically maintained.
Never set gear selector to
N (vehicles fitted with au-
tomatic gearbox) when the vehicle
is moving.
WARNING
The Cruise Control must be
activated only when the
traffic and the path allow keeping,
for a distance long enough, a con-
stant speed in complete safety.
WARNING

89GETTING TO KNOW YOUR VEHICLE
Warning light >alone,
with the engine running,
normally indicates a fault in the
ABS system only. In this case, the
braking system is still efficient,
though without the anti-locking de-
vice. Under these conditions, per-
formance of the EBD system may
be reduced. In this case too, you are
advised to go immediately to the
nearest Fiat Dealership, driving in
such a way to avoid sharp braking
to have the system checked over.
WARNING
If the xbrake fluid low
warning light comes on,
stop the vehicle immediately and
contact the nearest Fiat Dealership.
Fluid leaks from the hydraulic sys-
tem, in fact, can compromise brake
system operation, both traditional
systems and systems with ABS.
WARNING
Braking while cornering always re-
quires extreme care even when using
ABS.
The most important advice to follow
is this:
If you follow these tips you will be
able to brake better in any situation.
IMPORTANTVehicles fitted with
ABS shall only be fitted with wheel rims,
tyres and brake pads of the make and
model approved by the vehicle manu-
facturer.The system is completed with an elec-
tronic brakeforce distributor called
EBD which improves braking system
performance by means of the ABSsys-
tem control unit and sensors.
When the ABS cuts in, and
you feel the brake pedal
pulsating, do not remove your foot,
but keep it pressed. In doing so you
will stop in the shortest amount of
space possible under the current
road conditions.
WARNING
The vehicle is fitted with an
electronic brakeforce dis-
tributor (EBD). The >and x
warning lights come on at the same
time when the engine is running to
indicate that there is an EBD sys-
tem failure. In this case violent
braking may be accompanied by
early rear wheel locking with the
possibility of skidding. Drive ex-
tremely carefully to the nearest Fi-
at Dealership to have the system
checked.
WARNING

117GETTING THE BEST OUT OF YOUR VEHICLE
CONSTRUCTION FEATURES
DUCATO automatic gearbox is con-
trolled electronically with four for-
ward gears and reverse.
It is controlled by an electronic con-
trol unit which handles:
– the torque distributor;
– gearshifting;
– specific programmes.
The gearbox is coupled with a flow
power torque distributor with piloted
antislip device which makes it possible
to obtain demultiplication ratios.
The characteristic of this gearbox
which works without idle gear enables:
– higher compactness and weight re-
duction;
– improved output due to less fric-
tion;
– lower stress of transmission com-
ponents.GENERAL FEATURES
Electronic gearbox control makes it
possible to obtain gearshifting suited
to momentary engine characteristics
with a certain elasticity.
The electronic control unit has the
following task:
– adapting the oil pressure for
gearshifting to the engine torque;
– activating safety functions;
– defining the manual gearshifting
programme;
– system diagnostics.
For controlling these operating log-
ics the control unit uses the follow-
ing signals:
– engine rpm;
– engine temperature;
– engine torque;
– vehicle speed;
– gearbox oil temperature;– gearshift lever position;
– accelerator pedal position;
– brake pedal position.
The control unit also communicates
with the injection system electronic
control unit.
Conditions of use analysed by
the control unit
The control unit analyses each single
condition of use of the vehicle, dis-
criminating it on the basis of the sig-
nals received from the various sensors.
Analysed conditions are the follow-
ing:
– starting (position/accelerator ped-
al changing speed);
– acceleration (accelerator pedal
completely pushing down speed);
– full load (number of engine full load
kickdown signals or position mainte-
nance time);

216TECHNICAL SPECIFICATIONS
BRAKES
SERVICE AND EMERGENCY
BRAKES
Front: disc, floating caliper with two
operating cylinders for each wheel and
pad wear warning light.
Rear: self-centring shoes and micro-
metric mechanism for clearance take-
up.
Certain versions are fitted with rear
disc brakes with Drum in hat device
(i.e. drum on disc to block the vehicle
when parked with handbrake en-
gaged).
Cross-over hydraulic circuit control.
Four sensors ABS system with EBD.
Automatic recovery of the friction
gasket wear; versions with rear disc
brake excluded (Drum in hat ver-
sions).
Lacking ABS system brakeforce dis-
tributor acting on rear brake hydraulic
circuit according to rear axle load.HANDBRAKE
Controlled by a lever, it works me-
chanically on the rear brake shoes.
For versions with rear disc brakes,
the handbrake works on the Drum in
hat device shoes.
IMPORTANTPull the handbrake
lever only when the vehicle is at a
standstill, or when the vehicle is run-
ning, but however only in case of a
failure of the hydraulic system.
Should the handbrake be exception-
ally used when the vehicle is running,
it is suggested to keep a moderate
traction to avoid causing the rear axle
block, entailing vehicle side skidding.
TRANSMISSION
CLUTCH
Hydraulically controlled without
travel-free pedal.
MECHANICAL GEARBOX
AND DIFFERENTIAL
Five forward gears and reverse with
synchromesh for front gear engage-
ment.
Cyclical gear reduction and differen-
tial assembly incorporated in the gear-
box.
Drive transmission to the front
wheels by means of drive shafts con-
nected to the differential assembly and
the wheels with CV joints.
Water, ice or salt on road
surfaces can deposit on
brake discs, reducing braking effi-
ciency on the first braking.
WARNING