technical specifications FIAT CROMA 2006 2.G Service Manual

44
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
CLIMATE CONTROL (cooling)
Proceed as follows:
❒turn knob Cto the blue sector;
❒turn knob Eto the required speed;
❒turn knob Ato O;
❒turn air recirculation on by pressing
button G(button led on);
❒press button Bto turn climate control
compressor on.
Cooling adjustment
Proceed as follows:
❒turn air recirculation off by pressing
button G(button led off);
❒turn knob Cto the right to raise tem-
perature;
❒turn knob Eto the left to reduce the
fan speed.LOOKING AFTER THE SYSTEM
During winter, the climate control system
must be turned on at least once a month
for about 10 minutes. Before summer,
have the system checked at a Fiat Deal-
ership.
AUTOMATIC CLIMATE
CONTROL SYSTEM
(where provided)
GENERAL
The car is fitted with a two-zone climate
control system which makes it possible to
separately adjust the air temperature on
the driver’s side and on the passenger’s
side. Temperature control is based on the
“equivalent temperature” logic, i.e.: the
system continuously works to keep con-
stant the comfort inside the passenger
compartment and to compensate any vari-
ation of the outside climate conditions, in-
cluding sunshine detected by a proper sen-
sor provided for the purpose.
The system is also fitted with AQS (Air
Quality System) sensor that turns on air
recirculation automatically when it detects
the presence of outside polluted air (for
example when driving in the city, queues
and tunnels).

45
SAFETY
DEVICES
CORRECT USE
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WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
The climate control system automatically
controls and adjusts the following para-
meters and functions:
❒air temperature at driver/front pas-
senger/rear passenger vents;
❒air distribution at driver/front passen-
ger vents;
❒fan speed (continuous air flow varia-
tion);
❒compressor activation (to cool/dehu-
midify air);
❒air recirculation.All the above functions can be changed
manually by selecting the required func-
tion/s and by changing the set parameters.
In this way the automatic control is de-
activated; the system will resume auto-
matic control only for safety reasons (e.g.
risk of window misting up).
Manual selections prevail over automatic
ones and remain in storage until the user
decides to resume automatic control by
pressing the proper button, except when
the system cuts in for particular safety
conditions.
The control of functions not changed man-
ually remains automatic.
The amount of air admitted to the pas-
senger compartment does not depend on
the car speed, since it is electronically con-
trolled by the fan.The temperature of the air admitted to
the passenger compartment is always con-
trolled automatically according to the tem-
peratures set on the driver’s and front
passenger’s display (except when the sys-
tem is off or under certain conditions
when the compressor is off).
The following parameters and functions
can be set or changed manually:
❒air temperatures on driver/front pas-
senger side;
❒fan speed (continuous variation);
❒air distribution on seven levels (dri-
ver/front passenger side);
❒climate control compressor on/off;
❒monozone/two-zone distribution pri-
ority;
❒fast demisting/defrosting;
❒air recirculation;
❒rear heated window.

46
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
SWITCHING THE CLIMATE
CONTROL SYSTEM ON
The system can be started in different
ways, but it is advisable to press one of the
AUTObuttons and then to turn the
knobs to set the temperatures required
on the display.
Since the system controls two zone of the
passenger’s compartment, the driver and
the front passenger can select different
temperatures.This way the system will start working
completely automatically to reach the
comfort temperatures as quickly as pos-
sible. The system will set air temperature,
quantity and distribution and it will con-
trol the air recirculation function and the
activation of conditioner compressor.
F0L0020mfig. 47
CONTROLS
A: air recirculation and AQS function
on/off button
B: air distribution button on driver side
C: button for selecting the system auto-
matic mode AUTO on driver side
D: display showing climate control system
data
E: button for selecting the system auto-
matic mode AUTO on passenger side
F: air distribution button on passenger
side
G: knob for adjusting temperature on
passenger side
H: rear window heating on/off button
I: button for activating the MONO
function (alignment of set tempera-
tures)
L: climate control compressor on/off
button
M/N: buttons for adjusting fan speed
O:MAX-DEF function button (front
window fast defrosting/demisting
P: knob for adjusting temperature on dri-
ver side

47
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
During fully automatic operation, the on-
ly manual settings required are the fol-
lowing:
❒MONO, to align the air temperature
and distribution set on the passenger’s
side (front or rear) with that on the
driver’s side;
❒…, air recirculation, to keep it al-
ways on or off;
❒-, to speed up demisting/defrosting
of windscreen, front side windows,
rear window and door mirrors;
❒(, to demist/defrost heated rear win-
dow and door mirrors.During full automatic system operation,
you can change at any time set tempera-
tures, air distribution and fan speed by us-
ing the relevant buttons or knobs: the sys-
tem will automatically change its settings
to adjust to the new requirements. Dur-
ing FULL AUTOoperation, changing air
distribution and/or flow and/or compres-
sor activation and/or air recirculation will
make the FULLwording disappear. In this
way functions will pass from automatic
control to manual control until pressing
again the AUTObutton. Fan speed is the
same for every area of the passenger com-
partment.
With one or more functions engaged man-
ually, the adjustment of the temperature
of the air admitted to the passenger com-
partment continues to be controlled au-
tomatically by the system, except with the
climate control compressor off: under this
condition in fact, the temperature of the
air admitted to the passenger compart-
ment cannot be lower than outside air
temperature.CONTROLS
Air temperature adjusting
knobs P-G
Turning the knobs clockwise or counter-
clockwise, respectively highers or lowers
the temperature of the air required re-
spectively in the front left zone (knob P)
or in the right zone (knob G) of the pas-
senger compartment.
Since the system controls two zones of
the passenger compartment, it is possi-
ble to personalise required temperatures
(driver and passenger).
The temperatures set are shown on the
displays near the relevant knobs.
Pressing button I (MONO) automatical-
ly aligns the temperature on the passen-
ger’s side with that on the driver’s side;
you can therefore set the same tempera-
ture for both zones by turning knob P on
driver side.
Separate operation of air temperatures
and distribution is restored by turning
knobs or pressing again button I
(MONO) when the button led is on.

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SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
Turning the knobs fully clockwise or
counter-clockwise until they reach the ex-
treme selections HI or LO, the maximum
heating or cooling functions are respec-
tively engaged:
❒HI function (highest heating power):
this is turned on by rotating the temper-
ature knob clockwise and passing the max.
temperature value (32°C). It can be acti-
vated independently from driver or front
passenger side or both (also when the
MONOfunction is selected).
When this function is on, the display
shows HI.
This function can be engaged when re-
quiring to heat the passenger compart-
ment as quickly as possible, exploiting the
maximum potential of the system. This
function uses the maximum temperature
of the coolant fluid, while air distribution
and fan speed are controlled according to
the system settings.
More particularly, max. fan speed will not
be immediately engaged if coolant is not
hot enough; this to prevent admitting air
that is not warm enough to the passenger
compartment.
All manual settings are possible with this
function on.To switch the function off, simply turn the
knob counter-clockwise and set the re-
quired temperature.
❒LOfunction (highest cooling power):
this is turned on by rotating the temper-
ature knob counter-clockwise and passing
the min. temperature value (16°C). It can
be activated independently from driver or
front passenger side or both (also when
the MONOfunction is selected).
When this function is on, the display
shows LO.
This function can be engaged when re-
quiring to cool the passenger compart-
ment as quickly as possible, exploiting the
maximum potential of the system. This
function activates automatically:
❒MONOfunction;
❒air distribution at central / side vents
(shown by the relevant symbol on the
display);
❒fan at max. speed;
❒climate control compressor.
All manual settings are possible with this
function on.
To switch the function off, simply turn the
knob clockwise and set the required tem-
perature.Front air distribution buttons B-F
Pressing these buttons it is possible to
choose manually one of the seven possi-
ble air distributions to the passenger com-
partment (right or left side):
▲Air flow to the windscreen and front
side window vents to demist or de-
frost them.
˙Air flow at central and side dash-
board vents to ventilate the chest
and the face during the hot season.
▼Air flow towards the front and rear
lower parts of the passenger com-
partment. Due to the natural ten-
dency of heat to spread upwards,
this type of distribution allows heat-
ing of the passenger compartment
in the shortest time, also giving a
prompt feeling of warmth.
˙
▼Splitting of the air flow between the
vents to the lower part of the pas-
senger compartment (warmest air)
and the dashboard centre and side
outlets (coolest air). This air flow
distribution is particularly useful in
spring and autumn when the sun is
shining.

49
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
▲
▼Splitting of the air flow between the
windscreen and side window
demisting/defrosting vents and the
lower part of the passenger com-
partment. This type of air distrib-
ution allows satisfactory heating of
the passenger compartment while
preventing possible misting of the
windows.
▲
˙Combined splitting of the air flow▼between the windscreen vents,
central/side outlets and vents at
the lower part of the passenger
compartment (feet area). This air
flow distribution enables to keep
good overall comfort conditions in
summer.
▲Splitting of the air flow between
˙the windscreen vents, central/side
outlets on the dashboard. This air
flow distribution enables to obtain
satisfactory cooling of the passen-
ger’s compartment and to keep the
required coolig condition in sum-
mer. Air distribution is selected through but-
tons Band F in “rolling” mode, according
to the sequence shown in the following di-
agram fig. 48.
The type of air distribution selected is
shown by lighting up of the relevant sym-
bols on the display.
To restore automatic air distribution con-
trol after a manual selection, press button
AUTO.
F0L0234m
In FULL AUTO mode, pressing the dis-
tribution buttons Bor Ffor the first time,
will display the current status selected by
the system. It is then possible to select in
“rolling” mode the type of distribution re-
quired by pressing buttons Bor Fagain.
When the driver selects air distribution
to the windscreen, also the air distribu-
tion on passenger side will be distributed
to the windscreen. The passenger can
however select the required air distribu-
tion by pressing the relevant buttons.
fig. 48

50
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
Fan speed adjusting buttons M/N
Press buttons
p+or p–to increase or
to decrease the fan speed and therefore
the amount of air admitted into the pas-
senger compartment.
The fan speed is shown by the lit bars on
the display
❒max fan speed = all bars lit
❒min fan speed = one bar lit.
The fan can be cut off only if the cli-
mate control compressor has been
switched off pressing button B.
IMPORTANT To restore automatic
fan speed control after a manual ad-
justment, press button AUTO.
Pressing again button p–after min fan
speed will turn the system off.
The display will show OFFand the air re-
circulation condition fig. 49. AUTO buttons
(automatic operation) C-E
Pressing the AUTObutton (on driver
and/or front passenger side) the system
automatically adjusts the amount and dis-
tribution of the air admitted to the pas-
senger compartment, cancelling all the
previous manual adjustments.
This condition is indicated by the message
FULL AUTOon the front system dis-
play.
Manual operation of at least one automatic
function (air recirculation, air distribution,
fan speed or climate control compressor
off) will cause FULL message going off the
display. This means that automatic control
is not complete (except temperature con-
trol which is always automatic).IMPORTANT Should the system (after
manual settings) be no longer able to guar-
antee the required temperature set in the
passenger compartment, the set tempera-
ture value will start flashing to indicate this
condition, after one minute the AUTO
message will turn off.
To restore system automatic control at
any time, after one or more manual ad-
justments, press button AUTO.
MONO button
(to align set temperatures
and air distribution) I
Pressing button MONOautomatically
aligns the temperature on the passenger
side with that on the driver side, it is there-
fore possible to set the same temperature
and air distribution between the two zones
by turning the knob on driver side. This
function is provided to simplify tempera-
ture adjustment of the whole passenger
compartment when only the driver is on-
board. Separate operation of set temper-
ature and air distribution is restored by
turning knob Por G(to set temperature
on front passenger side) or by pressing
again button MONO, when the wording
is shown on the display.
fig. 49F0L0235m

51
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
Air recirculation and AQS function
on/off button A
If the AQSsensor is not fitted, air recir-
culation works according to the following
operating logics:
❒forced switching on (inside air recir-
culation always on), indicated by sym-
bol íon the display;
❒forced switching off (air recirculation
always off with air inlet from the out-
side), indicated by symbol
êon the
display.
The above operating conditions are ob-
tained by pressing in sequence the air re-
circulation button A.
Due to safety reasons, after long recircu-
lation activation (over 25 minutes), the
system will deactivate automatically air re-
circulation for 60 seconds to enable out-
side air inlet.
IMPORTANT The inside air recirculation
system makes it possible to reach the re-
quired heating or cooling conditions faster. It is however inadvisable to use it on
rainy/cold days as it would considerably in-
crease the possibility of the windows mist-
ing inside, especially if the climate control
system is off.
When outside temperature is below 3°C,
recirculation is forced to off (outside air
inlet) to prevent window misting up.
It will be reactivated automatically if out-
side temperature becomes higher than 5
°C.
The AQSsensor (Air Quality System) in
addition to the above operating logics, en-
ables to control recirculation automati-
cally according to the quality of outside air:
❒automatic control indicated by symbol
≥on the display.
In this event the display will show symbol
ïor ñaccording to actual recircu-
lation operating conditions (on or off).
In automatic operation with AQS,inside
air recirculation is turned on automatical-
ly when the antipollution sensor detectsthe presence of polluted air, for example
when driving in the city, queues and tun-
nels.
With compressor on, in order to prevent
polluted air (exhaust gas) inlet at stops, the
system will stop air recirculation when the
car speed falls below 6 km/h. As the car
speed increases (over 25 km/h), the sys-
tem will restore the previous automatic
operating conditions.
In automatic operation, AQSis deacti-
vated when outside temperature is below
3°C, the system will activate air recircu-
lation (indicated by symbol ≥on the
display). The user can however set it man-
ually by operating in rolling mode the reir-
culation button: pressing the button for
the first time will display the current re-
circulation condition, indicated by symbol
ê.
It will be reactivated automatically if out-
side temperature becomes higher than 5
°C.
Press the button again to select the re-
quired recirculation condition, indicated
by the corresponding symbol on the dis-
play. Under these conditions manual ac-
tivation of the AQSfunction could cause
window misting up.
When air recirculation is set manually,
wording FULLwill turn off and A will dis-
appear from the recirculation symbol on
the display.
It is inadvisable to use the in-
side air recirculation func-
tion with low outside temperature as
windows may mist over quickly.
WARNING

52
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
Climate control compressor on/off
button L
Pressing button
√when the symbol is dis-
played will deactivate the climate control
system compressor. Pressing the button
when the symbol is not displayed will re-
sume automatic control of compressor ac-
tivation; this condition is indicated by the
relevant symbol on the display.
When turning the compressor off, the sys-
tem will deactivate air recirculation to pre-
vent window misting up. Although the sys-
tem is able to keep the required temper-
ature, the wording FULLwill disappear
from the display. If the system is no longer
able to keep the required temperature,
temperature value will flash and the word-
ing AUTOwill disappear from the display.
IMPORTANT With the climate control
compressor off, it is not possible to admit
air to the passenger compartment with a
temperature below the outside tempera-
ture; moreover, under certain environ-
mental conditions, windows could mist up
fastly since air is not dehumidified.The switching off of the climate control
compressor remains in storage even when
the engine has been stopped.
To restore automatic control for switch-
ing on the climate control compressor,
press again button
√or press button AU-
TO.
With climate control compressor off if
outside temperature is higher than the set
one the system will not be able to keep
the required condition, the temperature
value will then start to flash on the display
for a few seconds and wording AUTO
will then go off.
With climate control compressor off, the
fan speed can be set to zero manually.
With compressor on and engine running,
the fan speed cannot be lower that one
bar on the display.
Compressor will be disabled automatical-
ly with outside temperature below – 1°C.
Under this condition symbol
√on the dis-
play will flash for 10 seconds and then go
off.
It will be re-enabled automatically with
outside temperature higher than + 1°C. Fast window demisting/defrosting
button O
Press this button: the climate control sys-
tem will automatically switch on all the
functions required for fast windscreen and
front side window demisting/defrosting,
that is:
❒switches on climate control compres-
sor when climatic conditions are suit-
able;
❒air recirculation off;
❒maximum air temperature (HI) on
both areas;
❒activates proper fan speed according
to engine coolant temperature to lim-
it the flow into the passenger com-
partment of air not warm enough to
demist the windows;
❒directs air flow to windscreen and
front side windows vents;
❒turns heated rear window on.
IMPORTANT Fast demisting/defrosting
function stays on for about 3 minutes,
since engine coolant temperature exceeds
50°C.

53
SAFETY
DEVICES
CORRECT USE
OF THE CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND CONTROLS
When the max. demisting/defrosting func-
tion is on, the button led and the heated
rear window button led are on. FULL
AUTOwording on the display is off.
When the max. demisting/defrosting func-
tion is on, the only manual operations pos-
sible are manual adjustment of the fan
speed and switching heated rear window
off.
With max. demisting/defrosting function
on, the fan works according to the previ-
ously set air distribution in order to guar-
antee top climatic comfort under what-
ever condition.
Pressing the max. demisting/defrosting
button or the air distribution buttons or
operating the temperature knobs, the sys-
tem switches off the max. demisting/de-
frosting function and restores the operat-
ing conditions of the system prior to func-
tion activation.Heated rear window and door
mirror demisting/defrosting
button H
Press this button to activate heated rear
window demisting/defrosting. When this
function is on, the button led is on.
This function is timed and switches off au-
tomatically after about 20 minutes or by
pressing again the button or by turning the
engine off. It will not be switched on au-
tomatically when restarting the engine.
IMPORTANT Do not apply stickers on
the inside of the rear window over the
heating filaments to avoid damage that
might cause it to stop working properly.ADDITIONAL HEATER
(Multijet versions)
This device enables quick warming up of
the passenger’s compartment in cold en-
vironmental conditions.
The additional heater will switch on au-
tomatically after turning the ignition key
to ON.
IMPORTANT The additional heater
works only with outside temperature be-
low 12°C, engine coolant temperature be-
low 50°C and car battery voltage over
10.25 V.
IMPORTANT Do not park the car over
flammable material such as paper, dry
grass or leaves: fire danger.