2007 Alfa Romeo 166 check engine

77
Faulty ABS anti
wheel-locking
This warning light comes on when the
system is inefficient. In this case normal
braking is ensured without though, mak-
ing use of the ABS system. Alfa Romeo
Authorized Services should however be
contacted as soon as possible.
When the ignition key is turned to
MARthe warning light comes on but
must go out after approx. 4 seconds.>
Presence of water
in the fuel oil filter
(JTD 20V Multijet versions)
When the ignition key is turned to the
MARposition the warning light should
come on and must go out after approx. 4
seconds.
The warning light switches on fixed
when driving, to indicate the presence of
water in the fuel oil filter.
In case the indicator light switches on,
even if just for a few seconds, we recom-
mend to contact an Alfa Romeo Autho-
rised Service as soon as possible in order
to purge the water from the fuel oil filter
and avoid severe damages to the injec-
tion pump and to the fuel oil supply cir-
cuit as well as the engine irregular opera-
tion.
c
Glowplugs
(JTD 20V Multijet versions)
The warning light comes on
when the ignition key is turned to MAR
position. When the glowplugs have
reached the established temperature the
warning light will go out. Start the en-
gine as soon as the warning light has
gone out.
For versions/markets where applica-
ble, the warning light flashes for approx.
30 seconds after starting the engine
meaning that there is a fault to the glow
plug warning system, in which case,
contact Alfa Romeo Authorized Services.
With a high ambient temperature the
warning light may turn on imperceptibly.
m
The car is fitted with an
electronic braking device
(EDB). If the
>andxwarning
lights 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 ex-
tremely carefully to the nearest
Authorized Alfa Romeo workshop
to have the system checked.
WARNING

78
LLeft-hand direction
indicator (intermittent)
This warning light comes on when the
control lever is moved downwards or, to-
gether with the right-hand warning light,
when the hazard warning lights are
switched on. R
Sidelights
This warning light comes on when the
sidelights are switched on.3
Right-hand direction
indicator (intermittent)
This warning light comes on when the
control lever is moved upwards or, togeth-
er with the left-hand warning light, when
the hazard warning lights are switched
on.E
Lights failure
The warning light stays on for about
15 seconds, after the check, when a fail-
ure is detected on one of the following
lights:
– low beam headlights
– high beam headlights
– flashing (only gas discharge headlights)
– side/taillights
– direction indicators
– brake lights (stop lights)
– third stop light
– rear fog guards
– number plate lights.
The warning of a fault may mean one
or more blown bulb, a burnt fuse or cut
off connection.
Turning the key to MARthe warning
light turns on, but it should go out after
about 5 seconds.The turning on of only
the
>warning light with
the engine running normally indi-
cates a fault to the ABS system
only. In this case the braking sys-
tem is still efficient, though with-
out the aid of the anti-lock device.
Under these conditions perfor-
mance of the EBD system may be
reduced. in this case too, you are
advised to go immediately to the
nearest Authorized Alfa Romeo
workshop, driving in such a way
as to avoid sharp braking, to have
the system checked over.
WARNING

79
Main-beam headlights
This warning light comes on when the
main-beam is switched on.
Cruise Control
(on request for versions/
markets where applicable)
The warning light turns on, with the
control switch in the ONposition, when
the device starts to act on the engine.
1VDC System (Vehicle
Dynamics Control)
(on request for versions/
markets where applicable)
Turning the ignition key to MAR, the
warning light on the instrument cluster
lights up and must go out after about 4
seconds.
If the warning light does not go out or s-
tays on when travelling, contact Autho-
rised Alfa Romeo Services. Although the
absence of the VDC function does not af-
fect the car safety, it is however recom-
mended to drive at moderate speed.
Flashing of the warning light when travel-
ling means that the VDC system has cut in.
áPassenger’s Air bag
deactivated
This warning light turns on when the
passenger’s Air bag is deactivated.
Warning light Findi-
cates also warning light
¬failure. This is indicated by in-
termittent flashing, over 4 sec-
onds, of warning light F. In this
event, warning light ¬could be
not up to indicate restraint system
failures, if any. Stop the car and
contact Authorized Alfa Romeo
Services have the system checked.
WARNING

92
The temperature near
the heater should never
exceed 120°C (e.g. dur-
ing body painting operations in
the workshop oven). Higher tem-
perature could damage the elec-
tronic control unit components.
For maintenance and repairs con-
tact only Authorized Alfa Romeo
Services and only use original
spare parts.
The burner exhaust gas
is released in the centre
floor area: therefore never park
the car with the engine running
over inflammable surfaces, fire
hazard!
WARNING
IMPORTANT When the heater is
working with the vehicle stationery and
the engine running, standing outside the
car near the rear wheel arch a low noise
caused by normal operation of the heater
can be heard.MAINTENANCE
Have the additional heater checked at
regular intervals by Authorized Alfa
Romeo Services. This will ensure safe,
cost-effective working of the heater and
also long life.

109
BONNET
The lever used to open the bonnet is lo-
cated under the left end of the dash-
board.
To open:
– Pull the lever (A-fig. 141) until the
bonnet clicks open.
357PGSm
fig. 141
Do this only with the car
stationary.
WARNING
– Raise the safety lever upwards (B-
fig. 142).
– Raise the bonnet.
IMPORTANT Bonnet raising is aided
by two gas springs. Do not tamper with
these springs and always accompany the
bonnet while raising it.
A0D0033m
fig. 142
DANGER-SERIOUS IN-
JURY. When carrying out
checks or maintenance operations
in the engine compartment, take
special care not to bump the head
on the raised bonnet.
WARNING

110
To close:
– Lower the bonnet to approx. 20 cm.
from the engine bay, then let it drop. Try
lifting it to make sure that it is shut com-
pletely and not simply caught in the safe-
ty position.
If the bonnet does not close properly do
not push it down but open it again and
repeat the above procedure.HEADLIGHTS
IMPORTANTOn the inside surface of
the headlight there could appear a slight
coat of fogging; this does not show a defect,
since it is a natural occurrence due to low
temperature and to the degree of humidity
in the air; it will soon disappear as soon as
the lights are turned on. The presence of
drops inside the headlight shows water seep-
age, refer to the Alfa Romeo Dealership.
For safety reasons the
bonnet shall always be
perfectly closed when travelling.
Always check for proper bonnet
locking. If the bonnet is left inad-
vertently open, stop the car im-
mediately and close the bonnet.
WARNING

113
EOBD SYSTEM
(optional for versions/
markets where applicable
)
The EOBD system (European On Board
Diagnosis) allows continuous diagnosis of
the components of the car correlated with
emissions.
This system continuously monitors the
components of the vehicle related to e-
missions; it also indicates, when the
Uwarning light comes on on the instrument
panel, that the components in question
are in poor condition.
IMPORTANTAfter the problem has
been resolved, to completely check the
system, the Alfa Romeo Authorized Ser-
vice Station must carry out tests on a test
bench and, if necessary, road tests that
could be long.If, when the ignition key
is turned to MAR, the
Uwarning light does
not come on or if, when driving, it
lights up and emits a fixed light
or a flashing one, contact an Alfa
Romeo Authorized Service Station
as soon as possible. Warning
light
Uoperation can be checked
by means of special equipment
by traffic agents. Always comply
with the traffic regulations in
force in the country where you
are travelling.
The objective is the following:
– to keep under control the efficiency of
the system;
– to warn when a fault causes emission
levels to increase;
– to indicate the need to replace the
deteriorated components.
The system also has a diagnostic con-
nector that can be interfaced with appro-
priate tools, which makes it possible to
read the error codes stored in the control
unit, together with a series of specific pa-
rameters for engine operation and diag-
nosis. This check can also be carried out
by the traffic police.

115
Braking on corners always requires the
utmost caution, even with the help of the
ABS.
The most important piece of advice
however, is the following:WARNINGCars fitted with ABS must
only be fitted with wheel rims, tyres and
brake linings of the type and brand ap-
proved by the Manufacturer.
The braking system is completed by the
EBD (Electronic Brake Distributor) which
distributes the braking action through the
ABS control unit and sensors.
Following these instructions you will be
in a condition to obtain peak braking per-
formance at all times.
If the ABS cuts in, it
means that the grip limit
between the tyres and the road
surface has been reached: it is nec-
essary to slow down and adapt
driving to the grip available.
WARNING
In the event of a system
fault, with lighting up of
the
>warning light, have the ve-
hicle checked immediately by Au-
thorized Alfa Romeo Services, driv-
ing slowly to be able to regain full
system performance.
WARNING
When the ABS cuts in and
you feel the pedal pulse,
do not reduce the pressure, but
keep the brake pedal firmly
pressed with no fear; this way you
will stop in the shortest space pos-
sible, compatibly with the condi-
tions of the road surface.
WARNING
The car is fitted with an
electronic brake distrib-
utor (EBD). If the
>andxwarn-
ing lights come on at the same time
when the engine is running, there
is an EBD system fault; in this case,
violent braking may lock the rear
wheels too early, with the possibil-
ity of skidding. Drive extremely
carefully to the nearest Authorized
Alfa Romeo Services to have the
system checked over.
WARNING