2010 Alfa Romeo Giulietta check engine

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IGNITION SWITCH
The key can be turned to three different positions fig. 21:
❍STOP: engine off, key can be extracted, steering locked. Some
electric devices (e.g. car radio, central door locking system,
alarm, etc.) can work;
❍MAR: driving position. All electric devices can work;
❍ON: starting the engine.
The ignition switch is fitted with an electronic safety system that
requires the ignition key to be turned back to STOP if the engine
will not start, before the starting operation can be repeated.
fig. 21A0K0063m
Iftheignitionswitchistamperedwith(e.g.:at-
tempted theft), have it checked over by an Alfa
Romeo Authorised Service Provider as soon as pos-
sible.
Always remove the key when you leave your car
to prevent someone from accidentally operating
the controls. Remember to engage the handbrake.
Engage 1
stgear if the car is parked uphill or reverse if the
car is parked downhill. Never leave children unattended
in the car.
STEERING LOCK
Engagement
When the key is at STOP, remove the key and turn the steering
wheel until it locks.
Disengagement
Move the steering wheel slightly and turn the ignition key to MAR.
It is absolutely forbidden to carry out any after-
market operation involving steering system or
steering column modifications (e.g.: installation of
anti-theft device). This could badly affect performance and
safety, invalidate the warranty and also result in the non-
compliance of the car with approval requirements.
Never remove the key while the car is moving. The
steering wheel should lock automatically as soon
as it is turned. This also applies to when the car is
towed.
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START&STOP
Manual climate control system
The system will remain set to the air flow setting made by the user
when the Start&Stop function is operated (engine off when speed
is zero). Cooling and heating in the passenger compartment is not
guaranteed in these conditions because the compressor and the
engine coolant pump are both stopped. To privilege climate con-
trol system operation, press the button on the dashboard to turn
the Start&Stop function off.
NOTAIn particularly severe climate conditions it is recommended
to limit the use of the Start&Stop function to prevent the com-
pressor from continuously switching on and off, with following fa-
st window misting and accumulation of humidity with unpleasant
smells in the passenger compartment.
SYSTEM MAINTENANCE
Operate the climate control system for at least 10 minutes every
month during the winter. Have the system checked by Alfa Romeo
Authorized Services before the summer.
A0K0083m
Four other positions are provided (see diagram below):
v(A Position) Air flow distribution between centre/side dash-
board vents, rear vent and windscreen and front side window
demisting/defrosting vents. This distribution setting ventilates
the passenger compartment and prevents the windows from
misting up.
u(B Position) Air flow distributed between foot well vents and
windscreen and front side window defrosting/demisting vents.
This distribution setting allows warms up the passenger com-
partment and prevents the windows from misting up.
w(C Position) Air flow distribution between footwell vents
(warmer air) and centre/side dashboard vents and rear vent
(cooler air).
-(D Position) Automatic demisting/defrosting activation (see
description of the previous pages).
fig. 38a
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AFS ADAPTIVE LIGHTS
(Adaptive Frontlight System) fig. 52
(for versions/markets, where provided)
This is a system combined with xenon headlamps which directs the
main light beam and continuously and automatically adapts it to
the driving conditions round bends/when cornering. The system
directs the light beam to light up the road in the best way, taking
into account the speed of the vehicle, the bend/corner angle and
the speed of steering.
The adaptive lights are automatically activated when the engine
is started. In this condition, LED A-fig. 52 will stay off. When the
button is pressed the adaptive lights (if on) are deactivated and the
LED A-fig. 52 in the button comes on continuously.
Press button again to turn the adaptive lights on (LED off).
fig. 52A0K0123m
DOOR LOCK fig. 53
Press≈to lock all the doors at the same time (the LED on the
button will light up when the doors are locked. Locking takes place
regardless of the position of the ignition key.
FUEL CUT-OFF SYSTEM
This system is tripped after a collision and activates the following
functions:
❍cutting off fuel supply and consequently stopping the engine;
❍automatically unlocking the doors;
❍turning on the inside lights.
The intervention of the system is indicated by a message shown
on the display. Carefully check the car for fuel leaks, for instance
in the engine compartment, below the car or near the tank area.
After a crash, turn the ignition key to STOP to avoid draining the
battery.
fig. 53A0K0145m
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EOBD SYSTEM
(European On Board Diagnosis)
(for versions/markets, where provided)
The aim of the EOBD (European On Board Diagnosis) system is to:
❍to monitor system efficiency;
❍indicate an increase in emissions;
❍to warn of the need to replace deteriorated components.
The car also has a diagnostic connector that can be interfaced
with appropriate tools, which makes it possible to read the error
codes stored in the electronic control units together with a series
of specific parameters for engine operation and diagnosis. This
check can also be carried out by the traffic police.
IMPORTANT After eliminating a fault, to check the system com-
pletely, Alfa Romeo Authorized Services are obliged to run tests
and, if necessary, road tests which may also call for a long journey.
DUAL PINION ACTIVE STEERING
This only operates with the key turned to MAR and the engine start-
ed. The steering allows the force required at the steering wheel
to be adjusted to suit driving conditions. The different power as-
sistance modes can be selected via the d,n,a positions of the"Alfa
DNA System" lever (see paragraph entitled "Alfa DNA System").
IMPORTANT The steering system will need to be initialised after
disconnecting the battery. A warning light will come on to indicate
this. Simply turn the steering wheel all the way from one end to the
other or simply drive in a straight line for a few hundred metres.
Under no circumstances should aftermarket op-
erations be carried out involving steering system
or steering column modifications (e.g. installation
of anti-theft device). This could negatively affect perfor-
mance and safety, invalidate the warranty, cause serious
safety problems and also result in non-compliance of the
car with type-approval requirements.
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If the warning light ¬does not turn on when the key
is turned to MAR, or if it stays on when travelling (to-
gether with the message on the display on some ver-
sions), there could be a failure in the restraint systems. If
this is the case, the air bags or pretensioners may not be de-
ployed in the event of an accident or, less likely, they may
be deployed accidentally. Do not drive the car and contact
a Alfa Romeo Authorised Service Provider to have the sys-
tem checked immediately.
The expiry dates of the pyrotechnic charge and
clock contact are shown in the plate installed in-
side the glove compartment. Go to an Alfa Romeo
Authorised Service Provider when the time to have them
replaced approaches.
Do not travel with objects on your lap, in front of
your chest, or between your lips (e.g. pipes, pen-
cils, etc.): you may be seriously injured in the event
of a crash with air bag deployment.
If someone tries to steal or damage your car, and
in the event of floods, have the air bag system
checked by an Alfa Romeo Authorised Service
Provider.
With the ignition key inserted and turned to MAR,
the air bags can be deployed also with the car at
a standstill, if it is hit by another vehicle even if the
engine is off. For this reason, children must never sit on
the front seat, even if the car is not moving. Remember
that no safety device (airbag or pretensioner) will be de-
ployed in a crash if the key is inserted and turned to the
STOP position. Failure to deploy in such cases must not
be considered a sign of malfunction.
When the ignition key is turned to MAR, the “
warning light turns on (front airbag on passenger’s
side enabled) and will blinks for a few seconds as
a reminder that the passenger airbag will be deployed
in the event of a crash and then go off.
The front air bags are deployed in the event of
more severe collisions than those required for de-
ploying the pretensioners.
For collisions in the range between the two thresholds, it
is normal for only the pretensioners to be activated.
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Keep your speed down when snow chains are fit-
ted - do not exceed 50 km/h. Avoid potholes, steps
and pavements and also avoid driving for long dis-
tances on roads not covered with snow to avoid damag-
ing the car and the road surface.
SNOW CHAINS
The use of snow chains should be in compliance with local regu-
lations. Snow chains may be fitted only to the front wheel tyres
(drive wheels).
Check the tension of the chains after the first few metres have been
driven.
Use reduced bulk snow chains:
– All versions: for 195/55 R16”, 205/55 R16” and 225/45
R17” size tyres use low-clearance snow chains with a maximum
protrusion beyond the tyre profile of 9 mm.
IMPORTANT The space-saver wheel cannot be fitted with snow
chains. If a front (drive) wheel is punctured and snow chains must
be used, you must remove a normal wheel from the rear and re-
place this one with the space-saver wheel. In this way, with two
normal drive wheels, it is possible to use snow cha
ins.
STORING THE CAR
If the car is to be left inactive for longer than a month, the following
precautions should be noted:
❍park the car in a dry, covered and, if possible, ventilated area;
engage a gear and check that the handbrake is not engaged;
❍disconnect the negative battery terminal and check battery
charge. Repeat this check once every three months during stor-
age;
❍clean and protect painted areas using protective wax;
❍clean and protect the shiny metal areas using special com-
mercially-available products;
❍sprinkle talcum powder on the rubber windscreen and rear win-
dow wiper blades and lift them off the glass;
❍slightly open the windows;
❍cover the car with a fabric or perforated plastic sheet. Do not
use compact plastic sheets which do not allow humidity to evap-
orate from the surface of the car.
❍inflate tyres to a pressure of +0.5 bar above the normal spec-
ified pressure and check the pressure at regular intervals;
❍if you have not disconnected the battery, check the battery
charge every thirty days;
❍do not drain the engine cooling system.
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❍inflate the tyre to the pressure shown in the “Wheels” para-
graph in the “Technical Specifications” chapter. In order to ob-
tain a precise reading, check the pressure on pressure gauge
B-fig. 126 with the compressor off;
❍if after 5 minutes you cannot reach at least 1.8 bar, unplug the
compressor from the valve and the socket, then move the car
forward about ten metres in order to distribute the sealant in-
side the tyre evenly, then repeat the inflation operation;
❍if you still cannot obtain a pressure of at least 1.8 bar within
5 minutes from the compressor switching on, do not drive off
and contact Alfa Romeo Authorized Services;
❍after driving for about 10 minutes, stop and check the tyre pres-
sure again; remember to put the handbrake on;
Apply the adhesive label where it can be easily
seen by the driver as a reminder that the tyre has
been treated with the quick repair kit. Drive care-
fully, particularly on bends. Do not exceed 80 km/h. Do
not accelerate or brake suddenly.
❍if a pressure value of at least 1.8 bar is detected, restore the
correct pressure (with the engine running and the handbrake
engaged), and drive with care to Alfa Romeo Authorized Ser-
vices.
If the pressure has fallen below 1.8 bar, do not dri-
ve any further: the Automatic Fix&Go quick tyre
repair kit cannot guarantee proper hold because
the tyre is too damaged. Contact Alfa Romeo Authorized
Services.
Remember to inform the workshop that the tyre
has been treated with a quick repair kit. Give the
instruction booklet to the personnel charged with
handling the treated tyre.
fig. 127A0K0128m
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CHANGING A FUSE
GENERAL INFORMATION
Fuses protect the electric system: they blow in the event of a
fault/intervention in the system. Check the state of the corre-
sponding fuse when a device does not work: the filament A-fig.
150 must be intact.
If it is, replace the blown fuse with a new one with the same am-
perage (same colour).
B = intact fuse.
C = fuse with damaged filament.
fig. 150A0K0042mfig. 151A0K0207m
Use the pliers A-fig. 151 under the engine compartment fusebox
lid to remove the fuses (see “Engine compartment fusebox” for
how to remove the lid).
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