engine FIAT CROMA 2006 2.G Service Manual

Roof rack/ski rack
Remove the roof rack or the ski rack from
the roof as soon as they are no longer
used. These accessories lower air pene-
tration and adversely affect consumption
levels. When needing to carry particular-
ly voluminous objects, preferably use a
trailer.
Electric devices
Use electric devices only for the amount
of time needed. Rear heated window, ad-
ditional headlights, windscreen wipers and
heater fan need a considerable amount of
energy, therefore increasing the require-
ment of current increases fuel consump-
tion (up to +25% in the urban cycle).
Climate control
The air conditioner is an additional load
which greatly affects the engine leading to
higher consumption (on average up to
+20%). When the temperature outside
the car permits it, use the air vents where
possible.
Spoilers
The use of non-certified aerodynamic
items may adversely affect air drag and
consumption levels.DRIVING STYLE
Starting
Do not warm the engine with the car at
a standstill or at idle or high speed: under
these conditions the engine warms up
much more slowly, increasing electrical
consumption and emissions. It is therefore
advisable to move off immediately, slow-
ly, avoiding high speeds. This way the en-
gine will warm faster.
Unnecessary actions
Avoid accelerating when waiting at traffic
lights or before switching off the engine.
This and also double declutching is ab-
solutely pointless on modern cars and al-
so increase consumption and pollution.
Gear selection
As soon as the conditions of the traffic and
road allow, use a higher gear. Using a low
gear to obtain brilliant performance in-
creases consumption.
In the same way improper use of a high
gear increases consumption, emissions an
engine wear.CONTAINING
RUNNING COSTS
Here are some suggestions which may
help you to keep the running costs of your
car down and lower the amount of toxic
emissions released into the atmosphere.
GENERAL CONSIDERATIONS
Car maintenance
Have checks and adjustments carried out
in accordance with the “Service schedule”.
Tyres
Check the pressure of the tyres routine-
ly at an interval of no more than 4 weeks:
if the pressure is too low, consumption
levels increase as resistance to rolling is
higher.
Unnecessary loads
Do not travel with too much luggage
stowed in the boot. The weight of the car
(especially when driving in town) and its
trim greatly affects consumption and sta-
bility.
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Traffic situations and road
conditions
Rather high consumption levels are tied to
situations with heavy traffic, for example
in queues with frequent use of the lower
gears or in cities with many traffic lights.
Also winding mountain roads and rough
road surfaces adversely affect consump-
tion.
Traffic hold-ups
During prolonged hold-ups (e.g.: level
crossings) the engine should be switched
off.TOWING TRAILERS
IMPORTANT NOTES
For towing caravans or trailers the car
must be fitted with a certified tow hook
and an adequate electric system. Installa-
tion should be carried out by specialised
personnel who release a special document
for circulation on the road.
Install any specific and/or additional rear-
view mirrors as specified by law.
Remember that when towing a trailer,
steep hills are harder to climb, the brak-
ing spaces increase and overtaking takes
longer depending on the overall weight.
Engage a low gear when driving downhill,
rather than constantly using the brake.
The weight the trailer exerts on the car
tow hook reduces by the same amount
the actual car loading capacity. To make
sure the maximum towable weight is not
exceeded (given in the log book) account
should be taken of the fully laden trailer,
including accessories and personal be-
longings. Top speed
Fuel consumption considerably increases
with speed. Avoid superfluous braking and
accelerating, which cost in terms of both
fuel and emissions.
Acceleration
Accelerating violently increasing the revs
will greatly affect consumption and emis-
sions: acceleration should be gradual and
should not exceed the maximum torque.
CONDITIONS OF USE
Cold starting
Short journeys and frequent cold starts do
not allow the engine to reach optimum
operating temperature. This results in a
significant increase in consumption levels
(from +15 to +30% on the urban cycle)
and emission of harmful substances.
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INSTALLING THE TOW HOOK
The towing device should be fastened to
the body by specialised personnel accord-
ing to any additional and/or integrative in-
formation supplied by the Manufacturer of
the device.
The towing device must meet current reg-
ulations with reference to 94/20/EC Di-
rective and subsequent amendments.
For any version the towing device used
must match the towable weight of the car
on which it is to be installed.
For the electric connection a unified con-
nector should be used which is generally
placed on a special bracket normally fas-
tened to the towing device, and a special
ECU for external trailer light control shall
be installed on the car.
For the electrical connection, 7 or 13 pin
12VDC connection is to be used (CU-
NA/UNI and ISO/DIN Standards). Follow
the instructions provided by the car man-
ufacturer and/or the tow hitch manufac-
turer.An electric brake should be supplied di-
rectly by the battery through a cable with
a cross section of no less than
2.5 mm
2.
IMPORTANT Electric brake or other de-
vice shall be used with running engine.
In addition to the electrical branches, the
car’s electric system can only be con-
nected to the supply cable for an electric
brake and to the cable for an internal light,
though not above 15W.
For connections use the preset control
unit with battery cable no less than 2.5
mm
2. Do not exceed the speed limits of the
country you are driving in. In any case do
not exceed 100 km/h.
It is recommended to use a proper tow-
ing stabiliser on the trailer drawbar.
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The ABS system with which
the car may be fitted does
not control the trailer braking system.
Drive with extreme care on slippery
roadbeds.
WARNING
Under no circumstances
should the car brake system
be altered to control the trailer brake.
The trailer braking system must be
fully independent of the car hydraulic
system.
WARNING

❒clean and protect the painted parts us-
ing protective wax;
❒clean and protect the shiny metal parts
using special compounds readily avail-
able;
❒sprinkle talcum powder on the rubber
windscreen and rear window wiper
blades and lift them off the glass;
❒slightly open the windows;
❒cover the car with a cloth or perfo-
rated plastic sheet. Do not use sheets
of non-perforated plastic as they do
not allow moisture on the car body to
evaporate;
❒inflate tyres to +0,5 bar above the
normal specified pressure and check it
at intervals;
❒if you don’t disconnect the battery
from the electric system, check its
charge every month and recharge it if
the optical indicator shows a dark
colour without the central green area;
❒do not drain the engine cooling sys-
tem.
IMPORTANT Where relevant, switch off
the car alarm with the remote control.
CAR INACTIVITY
If the car is to be left inactive for longer
than a month, the following precautions
should be noted:
❒park the car in covered, dry and if pos-
sible well-ventilated premises;
❒engage a gear (position P with auto-
matic transmission);
❒check that the handbrake is not en-
gaged;
❒disconnect battery terminals (first dis-
connect the negative terminal) and
check the battery charge. This check
is to be repeated every three months
when the car is left inactive. Recharge
if the optical indicator shows a dark
colour without the central green area;
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LIGHTS AND
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WARNING
LIGHTS AND
MESSAGES
GENERAL WARNINGS ...................................................... 138
LOW BRAKE FLUID ............................................................ 138
HANDBRAKE ON ............................................................... 138
AIR BAG FAILURE................................................................ 138
FRONT PASSENGER AIR BAG DEACTIVATED ......... 139
SEAT BELTS NOT FASTENED ......................................... 139
ENGINE COOLANT FLUID HIGH TEMPERATURE .. 139
LOW BATTERY CHARGE................................................. 140
LOW ENGINE OIL PRESSURE ......................................... 140
EXHAUST OIL ...................................................................... 140
INEFFICIENT ABS SYSTEM ................................................ 140
INEFFICIENT EBD ELECTRONIC BRAKING
DISTRIBUTOR ..................................................................... 140
INJECTION SYSTEM FAILURE ......................................... 141
ENGINE CONTROL SYSTEM FAILURE
(EOBD) .................................................................................... 141
POWER STEERING FAILURE .......................................... 141
INCOMPLETE DOOR LOCKING ................................... 141
FUEL RESERVE....................................................................... 142
GLOW PLUGS ...................................................................... 142
GLOW PLUG WARMING FAILURE ............................... 142
FIAT CODE ............................................................................ 143
WATER IN DIESEL FUEL FILTER ..................................... 143
ALARM FAILURE ................................................................. 143
BREAK-IN ATTEMPT ......................................................... 143
ELECTRONIC KEY NOT RECOGNISED ..................... 143
CHECK CAR PROTECTION SYSTEM .......................... 143
DIESEL PARTICULATE FILTER CLOGGED ................. 144
REAR FOGLIGHTS............................................................... 144
FUEL CUTOFF SWITCHED ON...................................... 144
RAIN SENSOR FAILURE ................................................... 144
EXTERNAL LIGHT FAILURE............................................. 144
GENERIC FAILURE INDICATION .................................. 144
TWILIGHT SENSOR FAILURE.......................................... 145PARKING SENSOR FAILURE ............................................ 145
ANTIPINCH SYSTEM FAILURE ........................................ 145
LOW TYRE PRESSURE ....................................................... 145
FLAT TYRES ........................................................................... 145
TYRE PRESSURE MONITORING SYSTEM FAILURE 145
FRONT FOG LIGHTS ......................................................... 146
LEFT-HAND DIRECTION INDICATOR ....................... 146
RIGHT-HAND DIRECTION INDICATOR ................... 146
SIDELIGHTS AND LOW BEAMS ..................................... 146
FOLLOW ME HOME ........................................................... 146
ESP SYSTEM .......................................................................... 146
HILL HOLDER FAILURE .................................................... 146
ASR SYSTEM ......................................................................... 147
MAIN BEAM HEADLIGHTS............................................... 147
POSSIBLE PRESENCE OF ICE ON THE ROAD ........... 147
AUTOMATIC TRANSMISSION FAILURE .................... 147
MAX. OIL TEMPERATURE (a.t.) ..................................... 147
SET SPEED LIMIT
EXCEEDED ........................................................................... 148
CRUISE CONTROL ............................................................. 148
BRAKE PAD WEAR ............................................................ 148
LOW ENGINE OIL LEVEL ................................................ 148
REAR SIDE BAGS DEACTIVATED ................................. 148
ENGINE OFF WHEN RUNNING .................................. 148
STARTING PROCEDURE MESSAGES (a.t.) ................. 148
STARTING PROCEDURE MESSAGES (m.t.) .............. 148
W W
A A
R R
N N
I I
N N
G G
L L
I I
G G
H H
T T
S S
A A
N N
D D
M M
E E
S S
S S
A A
G G
E E
S S

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WARNING
LIGHTS AND
MESSAGES
If when turning the ignition
key to ON, the warning light
¬does not turn on or if it stays on
when travelling there could be a fail-
ure in safety systems; in this event air
bags or pretensioners could not trig-
ger in case of impact or, in a minor
number of cases, they could trigger
accidentally. Contact Fiat Dealership
immediately to have the system
checked.
WARNING
The failure of the ¬warning
light (warning light off) is al-
so indicated by the flashing for more
than the normal 4 seconds of the pas-
senger’s front air bag deactivated
warning light
F.
WARNING
FRONT PASSENGER’S
AIR BAG
DEACTIVATED
(amber)
Warning light
Fwill come on when de-
activating the passenger front air bag. With
passenger front air active, turning the ig-
nition key to ON, warning light
Fwill
turn on with fixed light for about 4 sec-
onds and then it will flash for other 4 sec-
onds. It shall then go off.
F
Warning light Findicates
also warning light ¬failures.
This is indicated by intermittent flash-
ing, over 4 seconds, of warning light
F. In this event warning light ¬in-
dicates that there could be a failure
in safety systems. Contact Fiat Deal-
ership immediately to have the sys-
tem checked.
WARNINGHIGH TEMPERATURE
ENGINE COOLANT
FLUID (red)
Turning the ignition key to ONthe warn-
ing light turns on, but it should go off af-
ter few seconds.
The warning light turns on when the en-
gine is overheated.
If the warning light comes on when dri-
ving, proceed as follows:
❒normal driving conditions: stop
the car, switch off the engine and
check whether the water level in the
reservoir is not below the MIN mark.
Otherwise wait for few seconds to al-
low the engine cooling, then open
slowly and carefully the cap, top up
coolant and check whether its level is
falling between MIN and MAX marks
in the reservoir. Check visually any
leak. If, when restarting, the warning
light comes on again, contact a Fiat
Dealership.
ç
SEAT BELTS
NOT FASTENED
The warning light on the dial
turns on glowing steadily with car
stationary and driver’s seat belt not fas-
tened correctly. The warning light will turn
on flashing together with the buzzer when,
with car moving, front seat belts are not
fastened correctly. The S.B.R. (Seat Belt Re-
minder) buzzer can only be excluded by Fi-
at Dealership. The system can be reacti-
vated through the set-up menu (see dia-
gram aside). The display will show the ded-
icated message.
<

EXHAUST OIL
(Multijet versions)
The warning light with turn on
flashing together with the mes-
sage on the display when the system de-
tects that the engine oil is exhaust.
After the first indication, at each engine
starting the warning light
vwill go on
flashing for 60 seconds and then for 2
hours until oil is changed.
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WARNING
LIGHTS AND
MESSAGES
❒Car heavy duty(e.g.: towing trailer
uphill of fully laden car): decrease
speed, if the warning light stays on,
stop the car. Wait for 2 or 3 minutes
leaving the engine on and slightly ac-
celerated to further activate the cir-
culation of the coolant fluid, then
switch the engine off. Check proper
coolant level as described previously.
IMPORTANT Under severe use of the
car, keep the engine on and slightly accel-
erated for few minutes before switching it
off.
The display will show the dedicated mes-
sage.
LOW BATTERY
CHARGE (red)
Turning the key to ONthe
warning light turns on, but it should go out
as soon as the engine is started (with the
engine running at idle speed a brief delay
in going out is allowed).
If the warning light stays on contact im-
mediately Fiat Dealership.
w
INEFFICIENT ABS
SYSTEM (amber)
Turning the key to ONthe
warning light turns on, but it should go off
after few seconds.
The warning light turns on when the sys-
tem is inefficient or unavailable. In this case
the braking system keeps its effectiveness
unchanged, but without the potential of-
fered by the ABS system. Caution is ad-
visable and it is necessary to contact Fiat
Dealership.
The display will show the dedicated mes-
sage.
>
INEFFICIENT
EBD
ELECTRONIC
BRAKING
DISTRIBUTOR (red) (amber)
The turning on at the same time of warn-
ing lights
xand >with the engine run-
ning indicates an EBD system failure or
that the system is unavailable; in this case
heavy braking may cause the rear wheels
to lock before time, with the possibility of
skidding. Drive with the utmost care to
the nearest Fiat Dealership to have the
system checked.
The display will show the dedicated mes-
sage.
x>
LOW ENGINE OIL
PRESSURE (red)
Turning the ignition key to ON
the warning light turns on, but it should go
off after few seconds.
The display will show the dedicated mes-
sage.
v
v
If the warning light vturns on when travelling to-
gether with the message on the dis-
play, stop the engine immediately
and contact a Fiat Dealership.
WARNING

If warning light vflashes,
contact Fiat Dealership im-
mediately to have oil changed
and instrument panel warning light
turned off.
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WARNING
LIGHTS AND
MESSAGES
EOBD ENGINE CONTROL
SYSTEM FAILURE
Under normal conditions, turning the ig-
nition key to ON, the warning light turns
on, but it should go off when the engine has
started. In this case, turning on indicates
proper working of the warning light. If the
warning light stays on or turns on when
travelling:
❒glowing steadily: means a fault in the
supply/ignition system which could
cause high emissions at the exhaust,
possible lack of performance, poor
handling and high consumption levels.
On certain versions the dedicated mes-
sage is displayed.
In these conditions it is possible to con-
tinue driving without however requiring
heavy effort or high speed from the en-
gine. Prolonged use of the car with the
warning light on may cause damages. Con-
tact Fiat Dealership as soon as possible.
The warning light goes off if the fault dis-
appears, but it is still stored by the system.
❒flashing: indicates the possibility of
damage to the catalyst (see “EOBD
system” in section “Dashboard and
controls”). INJECTION SYSTEM
FAILURE
(Multijet versions - red)
EOBD ENGINE
CONTROL SYSTEM FAILURE
(petrol versions - amber)
Injection system failure
Turning the ignition key to ONthe warn-
ing light turns on, but it should go off af-
ter few seconds.
If the warning light stays on or turns on
when travelling, means a fault in the sup-
ply/ignition system which could cause high
emissions at the exhaust, possible lack of
performance, poor handling and high con-
sumption levels.
On certain versions the dedicated message
is displayed.
In these conditions it is possible to con-
tinue driving without however requiring
heavy effort or high speed from the en-
gine. In any case, contact Fiat Dealership
as soon as possible.
U
INCOMPLETE DOOR
LOCKING (red)
The warning light turns on
when one or more doors, the
boot or the bonnet are not properly shut.
The dedicated message will be displayed;
When travelling with door/doors, boot or
bonnet open also a buzzer will sound.
´
POWER STEERING
FAILURE (red)
Turning the ignition key to ON
the warning light turns on, but it should go
off after few seconds. If the warning light
stays on, you will not have steering assis-
tance and the effort on the steering wheel
will be increased, steering is however pos-
sible. Contact Fiat Dealership. The dedi-
cated message will be displayed.
g

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WARNING
LIGHTS AND
MESSAGES
If when turning ignition key at
ON, the warning light U
does not turn on or if it turns
on with fixed light or flashing
(on certain versions together with the
message on the display) when the car
is travelling, contact Fiat Dealership as
soon as possible. Warning light
Uop-
eration can by checked by traffic
agents by proper equipment therefore,
comply with laws and regulations in
force in the country where you are dri-
ving.
ç
FUEL RESERVE
(amber)
Turning the ignition key to ON
the warning light comes on but shall go off
after few seconds.
The warning light turns on when about 5
litres fuel are left in the tank.
IMPORTANT The warning light flashes to
indicate a failure, contact Fiat Dealership
as soon as possible to have the system
checked.GLOW PLUG
WARMING
(Multijet versions -
amber)
GLOW PLUG WARMING
FAILURE
(Multijet versions - amber)
Glow plug warming
Turning the ignition key to ONthe warn-
ing light turns on and it will go off when
glow plugs reach the preset temperature.
Start the engine immediately after warn-
ing light turning off.
IMPORTANT With hot ambient temper-
ature, warning light stays on for very short
time.
Glow plug warming failure
The warning light turns on when there is
a failure in the glow plug warming system.
Contact Fiat Dealership as soon as possi-
ble.
The display will show the dedicated mes-
sage.
m
If the light flashes, it is necessary to release
the accelerator pedal to lower the speed
of the engine until the warning light stops
flashing; continue the journey at moder-
ate speed, trying to avoid driving condi-
tions that may cause further flashing and
contact Fiat Dealership as soon as possi-
ble.

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WARNING
LIGHTS AND
MESSAGES
WATER IN DIESEL
FUEL FILTER (Multijet
versions -
amber)
Turning the ignition key to ONthe warn-
ing light turns on, but it should go off af-
ter few seconds.
The warning light
cturns on when there
is water in the diesel fuel filter. On certain
versions warning light
èwill turn on.
The display will show the dedicated mes-
sage.
c
The presence of water in the
fuel circuit may cause serious
damage to the entire injec-
tion system and cause irreg-
ular engine operation. If the warning
light
cturns on (on certain versions to-
gether with the message on the display)
contact Fiat Dealership as soon as pos-
sible to have the system relieved. If the
above indications come on immedi-
ately after refuelling, water has prob-
ably been poured into the tank: turn
the engine off immediately and contact
Fiat Dealership.HEATED REAR
WINDOW (amber)
The warning light turns on
when switching the heated rear window
on.
(
CAR PROTECTION
SYSTEM FAILURE -
FIAT CODE
(amber)
Turning the key to ONthe warning light
shall flash only once and then go off.
If with the ignition key at ONthe warn-
ing light comes on with fixed light, this in-
dicates a possible failure (see “The Fiat
Code system” in section “Dashboard and
controls”).
IMPORTANT The turning on at the same
time of the
Uand Ywarning lights in-
dicates a failure of the Fiat CODE system.
If with the engine running the warning light
Yflashes, this means that the car is not
protected by the engine inhibitor device
(see “Fiat Code system” in section “Dash-
board and controls”).
Contact Fiat Dealership to have all the
keys memorised.
ALARM FAILURE
(where provided)
The turning on of the warning
light (together with the message
on the display and the buzzer) indicates
that there is a failure in the electronic
alarm system. Contact Fiat Dealership as
soon as possible.
Y
Y
BREAK-IN ATTEMPT
The turning on of the warning
light (together with the mes-
sage on the display), indicates an
attempt of break-in.
ELECTRONIC KEY NOT
RECOGNISED
The turning on of the warning
light (together with the message
on the display and the buzzer) indicates
that the electronic key being used is not
enabled.Y
Y