2003 FIAT BARCHETTA sensor

17
HOW TO KNOW IF
THE ALARM HAS GONE OFF
If the car alarm was triggered while
you were away, led A-fig. 8on the
central tunnel will flash to identify the
reason for it:
Light on: remote control battery
flat.
1 flash: right door.
2 flashes: left door.
5 flashes: passenger compartment
sensors (movement inside the pas-
senger compartment).6 flashes: bonnet.
7 flashes: boot.
8 flashes: ignition tampered with.
9 flashes: alarm power supply cables
cut.
10 flashes: at least three different
causes.
The led will go out when the ignition
key is turned toMARor after 2 min-
utes.IGNITION SWITCH
The key can turn through four dif-
ferent positions fig. 11:
– STOP: engine off, key can be re-
moved and the steering column is
locked. Some of the electrical devices
(e.g. the radio) can be used.
– MAR: drive position. All electri-
cal devices can be used.
– AVV: starting the engine.
– PARK: engine off, parking lights
on, key can be removed and the steer-
ing column is locked. Press button A
to turn the key to the PARKposition.
fig. 11
P5S00626m

27
PRETENSIONERS
To render the protective action of
the seat belts even more effective, Fi-
at barchetta is fitted with pretension-
ers. These devices “feel” that a violent
collision is in progress via a sensor, and
pull back a few inches of webbing. In
this way the pretensioner ensures that
the belt is adhering perfectly to the
body before the belt begins to hold
back the wearer. When the preten-
sioner has been triggered the retrac-
tor will lock. The seat belt cannot be
drawn back up even when guiding it
manually.
When the pretensioner is triggered
as small amount of smoke will be pro-
duced. This smoke is not harmful and
does not indicate the principle of fire.The pretensioner does not require
any maintenance or lubrication. Any
modification of its original state inval-
idates its efficiency. If, as the result of
exceptional natural occurrences
(floods, sea storms etc.), the device is
soaked through with water and mud,
it must be replaced.
The pretensioner will give maximum
protection when the seat belt adheres
snugly to the wearer’s chest and hips.
Operations involving
banging, vibrations or
heating (exceeding 100°C
for a maximum of 6 hours) in the
area around the pretensioner
may trigger or damage the de-
vice. Vibrations from rough road
surfaces or accidental jolting
caused by mounting pavements
etc. do not have any effect on the
pretensioner. If, however, you
need any assistance, go to a Fiat
Dealership.
The pretensioner can only
be used once. After a colli-
sion that has triggered it, have it re-
placed at a Fiat Dealership. The de-
vice will last for 10 years from the
date of production given on the ad-
hesive label: the pretensioner must
be replaced when this date is
reached.
WARNING
Pretensioners do not re-
quire lubrication or main-
tenance. Under no circumstances
should the components of the pre-
tensioner be tampered with as this
could affect the correct operation
of these devices. If any interven-
tions are necessary, contact your Fi-
at Dealership.
WARNING

57
Braking while cornering always re-
quires extreme care even when using
ABS.
The most important advice to follow
is the following:If you follow these tips you will be
able to brake better in any situation.
IMPORTANTVehicles fitted with
ABS may only be fitted with wheel
rims, tyres and brake pads of the make
and model approved by the vehicle
manufacturer.
An Electronic Brake Distributor
EBD integrates the ABSsystem and
uses the control unit and sensors of
theABSsystem to increase perfor-
mance of the brake system.
If there is a fault, the warn-
ing light >will light up on
the dashboard. At this point, reduce
speed and go to a Fiat Dealership
to have your vehicle checked and
put right immediately.
WARNING
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 car is fitted with an
electronic braking device
(EBD). If the >and xwarning
light turn on at the same time, this
means that there is an EBD system
fault. In this case violent braking
may be accompanied by early rear
wheel locking with the possibility of
skidding. Drive the car extremely
carefully to the nearest Fiat Deal-
ership to have the system checked.
WARNING
The lighting of warning
light >when the engine is
running normally indicates a fault
in the ABS system only. In this case,
the braking system will still be ef-
fective without the anti-lock device.
In these conditions EBD system op-
eration can be reduced. Also in this
case we recommend immediately
taking the car to a Fiat Dealership
avoiding sudden braking to have
the system checked.
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

58
AIR BAG
Description and operation
The front airbag (driver and passen-
ger) is a safety device which is imme-
diately triggered in the event of a front
impact.
It consists of an instantly inflatable
bag housed in a special compartment
located:
– in the centre of the steering wheel
on the driver’s side;
– in the dashboard on the passen-
ger’s side (larger bag).
The front airbag (driver and passen-
ger) is a device which protects the oc-
cupants of the car during a head-on
collision of a medium-high degree. The system was designed to protect
from injury caused by the body crash-
ing to the steering wheel or the dash-
board.
In a collision, an electronic control
unit processes the signals from a de-
celeration sensor and, where required,
inflates the airbag.
The bag inflates instantly and acts as
a soft protective barrier between the
front seat passengers and the struc-
tures in front of them that could cause
injury. The bags deflate immediately af-
terwards.
A passenger not wearing the seat
belt may crash into the bag before it is
fully inflated. In this case, the protec-
tion is considerably decreased.
The airbag, as a consequence, is not
a replacement for the use of seat belts
but rather a complement. We rec-
ommend that seat belts are worn at all
times as prescribed by legislation in Eu-
rope and most other countries world-
wide. In the event of front collisions at low
speed, the restraining action of the
seat belts is sufficient and the airbag
is not inflated.
For impacts against very deformable
or mobile objects (traffic sign poles,
heaps of gravel or snow, parked vehi-
cles), side impacts, wedging under oth-
er vehicles or barriers (e.g. under a
truck or guard rail), the airbag is not
necessary and may even be undesir-
able. In the event of frontal impacts in-
volving, for example, the mudguard
against a guard-rail, the airbags are not
triggered as they would not offer ad-
ditional protection with respect to the
seat belts and may be undesirable.
The fact that the airbag is not trig-
gered in these situations, this does not
signify a malfunction.
fig. 76
P5S00671m

66
PROTECTING THE
ENVIRONMENT
Protecting the environment has been
the guiding principle in the design of
the Fiat barchetta right from the start.
The result is the use of materials and
creation of devices that can reduce or
considerable curtail harmful influences
on the environment.
The Fiat barchetta is ready to travel
well ahead of the most stringent in-
ternational pollution control stan-
dards.
USE OF MATERIALS
THAT DO NOT HARM
THE ENVIRONMENT
None of the car’s components con-
tain asbestos. Padding and the climate
control system do not contain CFI’s
(Chlorofluorocarbides) the gases con-
sidered responsible for the destruc-
tion of the ozone layer. Other sub-
stances which may pollute the air and
water tables, such as cadmium used in
bolt anti-rust coverings and the chro-
mate used in some colourings, have
been replaced entirely with environ-
mentally-friendly substances. DEVICES FOR REDUCING
PETROL ENGINE EMISSIONS
Three-way catalytic converter
(catalytic exhaust pipe)
Carbon monoxide, nitrogen oxides
and unburned hydrocarbons are the
main harmful components in exhaust
gases.
The catalytic exhaust pipe and the
devices connected to it are a “minia-
ture laboratory” where a very high
percentage of these components is
converted into harmless substances.
The conversion is aided by minute
particles of precious metals on the ce-
ramic core enclosed in the stainless-
steel container.Lambda Sensor
All petrol versions are fitted with this
device. It ensures that air and fuel are
constantly mixed in the correct pro-
portions. This is a fundamental condi-
tions for the proper functioning of the
engine and the catalytic converter.
Anti-evaporation canister
As it is impossible to stop the build-
up of petrol fumes even when the en-
gine is not running, the system traps
them in a special active carbon canis-
ter. They are sucked in from here and
burnt while the engine is running.

79
If the engine begins to “lose its
smoothness” when travelling, contin-
ue your journey but reduce the
demands you are making on the
engine and have the car seen to at a
Fiat Dealership.
When the instrument panel fuel
reserve warning light Kcomes on, fill
up as soon as possible. A low level of
fuel can cause an uneven supply of
fuel to the engine with the inevitable
increase in the temperature of the
exhaust gas and serious damage to
the catalytic converter.
Never run the engine with one or
more spark plugs disconnected, even
for testing purposes.
Do not warm up the engine by let-
ting it idle for a while before moving
off unless the outside temperature is
very low and, even in this case, only
do so for less than thirty seconds.TOWING
A TRAILER
IMPORTANT
The car must be fitted with a
homologated tow hitch and suitable
electrical system for towing a cara-
van or trailer. Have the tow hitch fit-
ted by an expert who will issue spe-
cific documentation for use on
roads.
Fit special and/or additional
rearview mirrors in accordance with
the highway code.
Remember that towing a trailer
makes it harder for the car to climb
the maximum gradients specified,
increases braking and overtaking dis-
tance, proportionally to the overall
weight of the trailer.
The weight the trailer exerts on
the car’s tow hitch coupling reduces
the car’s loading capacity by the
same amount. Do not install other heat shields
and do not remove those already fit-
ted to the catalytic converter and
exhaust pipe.
Do not allow anything to be
sprayed onto the catalytic converter,
lambda sensor and exhaust pipe.
When functioning normal-
ly the catalytic converter
develops high temperatures. For
this reason do not park the car
over inflammable material (grass,
dry leaves, pine needles, etc.): fire
hazard.
WARNING
Failure to heed these pre-
cautions could cause a
fire.
WARNING

104
15
15
15
10
15
30
15
20
20
40
20
20
15
15
7.5
7.5
15
7.5
60
7.5
7.5
15
60
7.5
–
Protected device Ampere Fuse - number - Location
Instrument panel power
Digital clock power
Cigar lighter power
Hazard light repeater power
Hazard light repeater power
Window winder control unit power
Door locking receiver power
Door locking control unit power
Manual climate control system control unit power
Supplementary headlight relay power
Radiator fan relay
Manual climate control system compressor relay
Climate control system compressor relay energy
Phase variator solenoid valve
Radiator fan relay energy
Fuel pump relay energy
Lambda sensor
Cylinder position sensor
Interconnection control unit
Injection control unit
Injection control unit
Window winder control unit
Electronic alarm control unit
Fiat CODE control unit
Spare13-fig. 30
12-fig. 30
12-fig. 30
14-fig. 30
13-fig. 30
fig. 31
12-fig. 30
fig. 31
9-fig. 30
5-fig. 33
9-fig. 30
9-fig. 30
fig. 34
fig. 34
fig. 34
fig. 34
fig. 34
fig 34
1-fig. 33
fig. 34
fig. 34
13-fig. 30
1-fig. 33
fig. 34
15-fig. 30

138
FUEL SUPPLY/IGNITION
Integrated electronic injection and ig-
nition system: a single electronic con-
trol unit controls both functions. It
processes both the time the injection
lasts (for fuel metering) and the igni-
tion’s advance angle.
Type: Sequential in phase Multipoint
Air cleaner: dry-type with paper fil-
ter element; thermostatically con-
trolled intake.
Petrol pump: in-tank.
Injection pressure: 3 bar
Method of measuring the amount of
aspirated air by directly measuring the
maximum rate of flow with a hot wire
air flow meter.
“Closed loop” petrol metering (in-
formation about combustion provid-
ed by the Lambda sensor).Firing order: 1-3-4-2
Spark plugs:
– Champion RC10YCC
– NGK BKR6EZLUBRICATION
Forced-fed with gear pump with
pressure relief valve incorporated.
Oil purification by means of full-flow-
cartridge filter.
COOLING
Cooling system with radiator, cen-
trifugal pump and expansion tank.
“Controlled” by-pass type thermo-
stat on the secondary circuit for the
recirculation of water from the engine
to the radiator.
Electric fan for radiator cooling with
thermostatically-controlled on/off
switch on the radiator.
Modifications or repairs to
the fuel feed system that
are not carried out properly or do
not take the system’s technical
specifications into account can
cause malfunctions with the risk of
fire.
WARNING