sensor Lancia Ypsilon 2001 Owner handbook (in English)

DEVICES FOR REDUCING ENGINE EMISSIONS
Three-way catalytic converter (catalytic exhaust pipe)
Carbon monoxide, nitrogen oxides and unburnt hydrocarbons are the main harmful components in
exhaust gases.
The catalytic exhaust pipe and the devices connected to it are a “miniature laboratory” where a very
high percentage of these components are converted into harmless substances.
This conversion is aided by minute particles of precious metals on the ceramic core enclosed in the
stainless-steel container.
Lambda sensors
All are fitted with these devices. They ensure that air and fuel are constantly mixed in the correct pro-
portion. This is a fundamental condition for proper engine and catalytic converter operation.
Evaporation control systems
As it is impossible to stop the build-up of petrol fumes even when the engine is not running, the sys-
tem traps them in a special container holding active carbon. They are sucked in from here and burnt
while the engine is running.
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For maximum pretensioner protec-
tion, make sure your seat belt fits
snugly to your chest and hips.
Never dismantle or tam-
per with pretensioner
components. Any interven-
tion must be performed by skilled
and qualified personnel. Always
have interventions performed at a
LANCIA Dealership.PRETENSIONERS
The Lancia Y is fitted with preten-
sioners to enable the seat belts to of-
fer even more effective protection.
These devices “feel” that a violent col-
lision is in progress, via a sensor, and
call in a few inches of webbing. The
pretensioner, therefore, ensures the
belt is adhering perfectly to the body
before it begins to stop the wearer
moving forward.
When the seat belt locks, it indicates
the pretensioner has been activated.
The belt will not wind back even if
accompanied manually.
A small amount of smoke may be
noticed: this is not harmful and does
not indicate the beginning of a fire.
The pretensioner needs no mainte-
nance or lubrication. Any modifica-
tion to its original features will nullify
the pretensioner’s effectiveness. If wa-
ter or mud accidentally get into the
pretensioner as a result of floods or
storms, the device must be replaced. The belt is adjusted properly when
the webbing passes approximately
halfway between the edge of the
shoulder and the neck.
The seat belt can be adjusted to one
of four different heights.
To lift the belt
Lift loop B (fig. 17)to the required
position.
To lower the belt
Press knob A (fig. 17)and move
loopBdown to the position required.
After you have made the
adjustment, always make
sure the slider the loop is
attached to catches firmly in one of
the fixed positions and cannot
move. To check this, release the
knob and push again so that it can
catch into place if it is not properly
latched in position.
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FRONT AND SIDE
AIRBAGS
FRONT AIRBAGS (fig. 85)
Description and operation
The front airbag (driver and pas-
senger) is a safety device which is im-
mediately 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 pas-
senger) is a device which protects the
occupants 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. IMPORTANTCars fitted with ABS
must always be fitted with the wheel
rims, tyres and brake linings of the
type and make recommended by the
Manufacturer.
The system also includes the EBD
electronic brake correction (Electronic
Brake Distributor) which, through the
control unit and the ABSsensors fur-
ther enhances the braking system.
The car is fitted with an
electronic brake distribu-
tor (EBD). If warning lights
>andxlight up simultaneously
when the engine is running, this
indicates an EBD fault. This
means that violent braking could
cause early locking of the rear
wheels causing the car to skid.
Drive very carefully to the nearest
LANCIA Dealership to have the
system checked.
If only warning light >
switches on when the en-
gine is running, this usu-
ally indicates an ABS fault. In such
cases the braking system is still ef-
ficient, although the anti-locking
device does not function. The EBD
system may also be less efficient.
Go to a LANCIA Dealership imme-
diately, taking care not to brake
suddenly, and have the system
checked.
If the xbrake fluid low
warning light comes on,
stop the car immediately
and contact the nearest LANCIA
Dealership. Fluid leaks from the
hydraulic system, can compromise
brake system operation, both tra-
ditional systems and systems with
ABS.
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Europe 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
other vehicles or barriers (e.g. under
a truck or guard rail), the airbag is
not necessary and may even be unde-
sirable.
The fact that the airbag is not trig-
gered in these situations, this does not
signify a malfunction.
fig. 85
P4C00348
PASSENGER’S FRONT AIRBAG
The passenger side airbag was de-
signed and calibrated to protect a per-
son wearing seat belts.
When fully inflated, the bag will fill
most of the space between the dash-
board and the passenger. 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
structures in front of them that could
cause injury. The bags deflate imme-
diately afterwards.
A passenger not wearing the seat
belt may crash into the bag before it
is fully inflated. In this case, the pro-
tection is considerably decreased.
The airbag, as a consequence, is not
a replacement for the use of seat belts
but rather a complement. We recom-
mend that seat belts are worn at all
times as prescribed by legislation inSEVERE DANGER:
if the car has a pas-
senger airbag, do
not place the child seat on the
front seat.
Manual deactivation
The passenger side airbag can be de-
activated if it is absolutely necessary
to carry a child in the front passenger
seat.
Turn the specific switch A (fig. 86)
inside the glove compartment on the
left-hand side with the ignition key.
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The switch has two positions:
1)Passenger side airbag on: (posi-
tion ON ) instrument panel warn-
ing light off. Do not carry children on
the front seat.
2)Passenger side airbag off: (posi-
tion OFF ) instrument panel warn-
ing light on. A child can be carried on
the front seat with a suitable restraint
system.
The instrument panel warning light
will stay on until the passenger
side airbag is reactivated. SIDE BAGS (fig. 87)
The purpose of the side bag fitted in
the seat is to protect the front seat
passengers in the event of a side im-
pacts of medium to high degree.
The device consists of a bag housed
in the front seat backs which imme-
diately inflates. This solution ensures
that the bag is in an optimal position
regardless of the seat position.
In the event of a side impact, the
control unit processes the signals from
a deceleration sensor and fires the side
bag.
The bag inflates instantly and acts
as a soft protective barrier between
the front seat passengers and car
door. The bags deflates immediately
afterwards.In the event of side collisions at low
speed, the restraining action of the
seat belts is sufficient and the airbag
is not inflated. Also in this case, seat
belts should be worn at all times.
They ensure the passenger is correctly
positioned in the seat in the event of
side crash and prevent the passenger
from being projected from the vehicle
in the event of a very violent crash.
The airbag, as a consequence, is not
a replacement for the use of seat belts
but rather a complement. We recom-
mend that seat belts are worn at all
times as prescribed by legislation in
Europe and most other countries
world-wide.
fig. 86
P4C00379
fig. 87
P4C00349
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For emergency starts use only an
auxiliary battery.
If the engine begins to “loose its
smoothness” when travelling, con-
tinue your journey but reduce the de-
mands you are making on the engine
and have the car seen to at a LANCIA
Dealershipas soon as you can.
When the instrument panel fuel re-
serve warning light comes 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.When functioning nor-
mally the catalytic con-
verter reaches high tem-
peratures. For this reason do not
park the car over inflammable
material (grass, dry leaves, pine
needles etc.): fire hazard.
Failure to heed these pre-
cautions could cause a
fire.
Do not install other heat shields and
do not remove those already fitted to
the catalytic converter and exhaust
pipe.
Do not allow anything to be sprayed
onto the catalytic converter, Lambda
sensor and exhaust pipe.TOWING A TRAILER
IMPORTANTThe car must be fit-
ted with a homologated tow hitch and
suitable electrical system for towing a
caravan or trailer.
Have the tow hitch fitted by an ex-
pert who will issue specific documen-
tation 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.
Engage a low gear when driving
downhill rather than constantly brak-
ing.
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System / Component No. fuse Amperage Location
Sunroof
General fusebox
(left side of dashboard)
Fusebox in glove compartment
Key-operated circuits and Lancia CODE
Lancia CODE and engine control circuit
1242 cm
3version:
Compressor
Auxiliary loads (lambda sensor, evaporation system,
compressor on)
ABS power circuit protection
Engine control unit protection
Lancia CODE
1242 cm
316Vversion:
Compressor
Auxiliary loads (lambda sensor, evaporation system,
compressor on)
Engine control unit protection
Lancia CODE
Auxiliary loads (injectors, ignition coils, phase sensor)
ABS power circuit protection4 20A fig. 33
1 80A-MAXI FUSE fig. 35
4 50A-MAXI FUSE fig. 35
5 40A-MAXI FUSE fig. 35
3 30A-MAXI FUSE fig. 35
1 7.5A fig. 36
2 15A fig. 36
3 10A fig. 36
4 7.5A fig. 36
5 7.5A fig. 36
1 7.5A fig. 36
2 15A fig. 36
4 7.5A fig. 36
5 7.5A fig. 36
1 15A fig. 37
2 10A fig. 37
les
00
ed
az-
ve
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FUEL SUPPLY / IGNITION
1.2 versions
Integrated electronic injection and
ignition system: a single electronic
control unit controls both functions.
It processes both the time the injec-
tion lasts (for fuel metering) and the
spark advance angle.
– Type: ......................Multi-point.
– Method of measuring the amount
of aspirated air for petrol metering:
“Speed density” (*).
– “Closed loop”: information on
combustion for correct petrol meter-
ing achieved by means of two lambda
sensors (one upstream and the other
downstream with respect to the catal-
yser).– Electric petrol pump: in-tank.
– Injection pressure: ......... 3.5 bar.
– Air cleaner: dry-type with paper
filter element.
– Firing order: ................1-3-4-2.
– Engine idling speed: 750±50 rpm.
– Spark plugs:
Champion.................RC10YCC
NGK ........................... BKR5EZ1.216Vversions
Integrated electronic injection and
ignition system: a single electronic
control unit controls both functions.
It processes both the time the injec-
tion lasts (for fuel metering) and the
spark advance angle.
– Type: ......................Multi-point.
– Method of measuring the amount
of aspirated air for “Speed density”
petrol metering (*).
– “Closed loop”: information on
combustion for correct petrol meter-
ing achieved by means of two lambda
sensors (one upstream and the other
downstream with respect to the catal-
yser).
– Electric petrol pump: in-tank.
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– Injection pressure: ......... 3.5 bar.
– Air cleaner: dry-type with paper
filter element.
– Firing order: ................1-3-4-2.
– Engine idling speed: 700±50 rpm.
– Spark plugs:
NGK ..........................DCPR8E-N
(*) Analytic method, by electronically process-
ing data from the engine rpm (speed) sensor
and from the air temperature and absolute pres-
sure sensors in the intake manifold (density).
LUBRICATION
Forced-fed with gear pump with
pressure relief valve incorporated.
Oil purification through full-flow
cartridge filter.
COOLING
Cooling system with radiator, cen-
trifugal pump and expansion tank.
“Fixed by-pass” thermostat(1.2 en-
gine)” on the secondary circuit for the
recirculation of water from the engine
to the radiator.
Electric fan for radiator cooling on
the radiator with switching on/off
controlled by thermostatic switch lo-
cated on the radiator. Modifications or repairs
to the fuel feed system that
are not carried out prop-
erly or do not take the system’s
technical specifications into ac-
count can cause malfunctions with
the risk of fire.
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Drive transmission to the front
wheels by means of half-shafts con-
nected to the differential assembly
and the wheels with CV joints.
The ratios are:Final drive gear and differential as-
sembly incorporated in the gearbox.
Version Final drive ratio Number of teeth
1.2 3.438 16/55
1.216V3.438 16/55
1.216VM Nrosso3.867 15/58
BRAKES
SERVICE AND EMERGENCY
BRAKES
Cross-over hydraulic circuit control.
8" vacuum brake booster.
Front: disc, floating caliper type with
operating cylinder for each wheel.
Rear: drum type with self-centring
shoes with operating cylinder for each
wheel.
Automatic take up of clearance due
to friction lining wear.
Brake effort apportioning valve
working on the hydraulic circuit of
the rear brakes (for versions without
ABS).
Four channel, four sensor ABS (op-
tional for 1.2 versions, standard for LX
and 1.2
16Vversions) with electronic
brake force distributor.
HANDBRAKE
Controlled by a lever, it works me-
chanically on the rear brake shoes.
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