2006 Alfa Romeo 156 check engine

GETTING TO KNOW YOUR CAR59
A.Speedometer (mileage recorder) - B. Odometer with double counter (total and partial) display -C. Check panel - D.Rev counter -
E.Fuel level gauge with reserve warning light - F.Clock - G.Engine coolant temperature gauge with maximum temperature warning light -
H.Warning lights - L.Q-System gearbox display (where fitted).fig. 82 - 2.5 V6 24V versions
A0B0696m
t
Warning light fitted
only on Q-System
gearbox versions

GETTING TO KNOW YOUR CAR60
A.Speedometer (mileage recorder) - B. Odometer with double counter (total and partial) display -C. Check panel - D.Rev counter - E.
Fuel level gauge with reserve warning light - F.Clock - G.Engine coolant temperature gauge with maximum temperature warning light - H.
Warning lights.fig. 83 - JTD versions (equipped with VDC system)
A0B0586m
´
- Warning light fitted
for versions/markets
where applicable

GETTING TO KNOW YOUR CAR61
A0B0597m
fig. 83a - JTD versions
A.Speedometer (mileage recorder) - B. Odometer with double counter (total and partial) display -C. Check panel - D.Rev counter - E.
Fuel level gauge with reserve warning light - F.Clock - G.Engine coolant temperature gauge with maximum temperature warning light - H.
Warning lights.
´
- Warning light fitted
for versions/markets
where applicable

GETTING TO KNOW YOUR CAR68
If the display shows an anomaly message, see paragraph
“Warning lights and indications” in this chapter.
INITIAL CHECK
By turning the ignition key to the MARposition, the Infocenter display will show the message CHECK ACTIVE: this indicates the start of the
diagnosis phase for all the electronic systems available on the vehicle; this phase lasts a few seconds (in diesel versions only, the Infocenter
display is able to provide the engine oil level indication too, see following paragraph “Engine oil level check”). If, during this phase, no anom-
aly is found and after the engine has been started, the display will show the message CHECK OK.
Standard screen display
JTD versions only
If no
failures
are
present
Is the
engine
started?
YES
NO
or
continues on next page

GETTING TO KNOW YOUR CAR70
Engine oil level check
(JTD versions only)
By turning the ignition key to the MAR
position, the Infocenter display will show the
engine oil level display for about 3 seconds.
During this phase, to clear the display and
move to the following screen, press
ç
.
WARNINGTo ensure correct reading of
the engine oil level, the check must be car-
ried out with the vehicle on level ground.The following display in fig. 90refers to
correct engine oil level. As the oil level grad-
ually falls, the full bars go off leaving room
for the empty bars.
fig. 90
A0B2129g
fig. 91
A0B2134g
fig. 92
A0B2135g
The following fig. 91andfig. 92re-
fer to the display with an oil level below the
foreseen minimum. Under this condition, the
bars are all empty with symbol and warn-
ing messages.

GETTING TO KNOW YOUR CAR71
The following refers to the display
(fig. 93) (appearing for about 3 seconds)
with an oil level above the foreseen maxi-
mum. Under this condition the bars are all
full.fig. 93
A0B2136g
Contact Alfa Romeo Au-
thorized Services to have
the engine oil restored to
its correct level.
Restore correct engine oil
level (see paragraph
“Checking fluid levels” in
chapter “Car maintenance”).Do not add oil with dif-
ferent characteristics from
those of the oil already
used in the engine (see “Fluids and
lubricants” in chapter “Car main-
tenance”).

GETTING TO KNOW YOUR CAR94
Warning light Message
on display
ç
HIGH ENGINE COOLANT TEMPERATUREWhen the ignition key is turned to MAR, the warning light comes on but must go out after a
few seconds.
The engine coolant temperature warning light comes on (together with the message + symbol
shown on the display) when the engine is overheated.
If the warning light comes on, proceed as follows:
– Normal driving conditions: stop the car, switch the engine off and check if the water
level inside the tank is not below the reference mark MIN.
In this case, wait a few minutes to let the engine cool down, then open the cap slowlyand care-
fully, fill with coolant, making sure its level is between reference marks MINand MAXon the
tank. Moreover, perform a visual check for any fluid leakage. If the warning light comes on again
the next time the engine is started, contact Alfa Romeo Authorized Services.
– Car heavy duty(e.g. towing a trailer uphill or car fully loaded): slow down and, if the
warning light stays on, stop the car. Pause for 2 or 3 minutes, keeping the engine on and slightly
accelerated to facilitate better coolant circulation, then switch the engine off.
Check correct fluid level, as described above.
WARNINGIn case of highly demanding use of the car, you are recommended to keep the en-
gine on and slightly accelerated for a few minutes before switching it off.
When the engine is very hot, do not remove the tank cap: danger of
burns.
WARNING

GETTING TO KNOW YOUR CAR96
<
SEAT BELTS NOT FASTENEDThe warning light on the check panel will turn on for some seconds when, with the ignition key at
MAR, the driver’s seat belt is not fastened properly.
Warning lightMessage
on displayv
LOW OIL PRESSUREWhen the ignition key is turned to MAR, the warning light on the check panel comes on but
must go out as soon as the engine is started.
w
LOW BATTERY CHARGEWhen the ignition key is turned to MAR, the warning light on the check panel comes on, but must
go out as soon as the engine is started (a slight delay is permitted when the engine is running at
idle). It if stays on, contact Alfa Romeo Authorized Services immediately.
If the warning light
v
comes on when travelling (together with
the message + symbol shown on the display), switch the engine off im-
mediately and contact Alfa Romeo Authorized Services.WARNING