engine CITROEN C3 PICASSO 2017 Workshop Manual

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AdBlue® additive and SCR system
for BlueHDi Diesel engines
To assure respect for the environment and
conformity with the new Euro 6 emissions
standard, without adversely affecting the
per formance or fuel consumption of Diesel
engines, CITROËN has taken the decision to
equip its vehicles with an effective system that
associates SCR (Selective Catalytic Reduction)
with a particle filter (FAP) for the treatment of
exhaust gases.
Presentation of the SCR system
Using an additive called AdBlue® containing
urea, a catalytic converter turns up to 85%
of nitrous oxides (NOx) into nitrogen and
water, which are harmless to health and the
environment. Once the AdBlue
® tank is empty, a
s
ystem required by regulations prevents
starting of the engine.
If the SCR is faulty, the level of
emissions from your vehicle will no
longer meet the Euro 6 standard: your
vehicle becomes polluting.
In the event of a confirmed fault
with the SCR system, you must go
to a CITROËN dealer or a qualified
workshop as soon as possible: after
a running distance of 650 miles
(1

100 km), a system will be triggered
automatically to prevent engine starting.
The AdBlue® additive is held in a special
tank located under the boot at the rear of
the vehicle. It has a capacity of 17 litres: this
provides a driving range of about 12 500 miles
(20 000 km), after which an alert is triggered
warning you when the reserve remaining is
enough for just 1 500 miles (2 400 km).
During each scheduled service of your vehicle
by a CITROËN dealer or a qualified workshop,
the AdBlue
® additive tank is refilled in order to
allow normal operation of the SCR system.
If the estimated mileage between two services
is greater than 12 500 miles (20 000 km), we
recommend that you go to a CITROËN dealer
or a qualified workshop to have the necessary
top-up carried out.
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Range indicators
Once the AdBlue® tank is on reserve or after
detection of a fault with the SCR emissions
control system, when the ignition is switched
on, an indicator displays an estimate of the
distance that can be covered, the range, before
engine starting is prevented.
In the event of simultaneous system fault and
low AdBlue
® level, the shortest range figure is
the one displayed.
In the event of the risk of
non-starting related to a lack
of AdBlue
®
The engine start prevention system
required by regulations is activated
automatically once the AdBlue
® tank is
e m pt y.
Range greater than 1 500 miles (2 400 km)
When the ignition is switched on, no
information on range is displayed automatically
in the instrument panel.
For more information on topping-
up the AdBlue® additive, refer to the
corresponding section.
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Remaining range between 350 and 1500 miles (600 and 2 400 km)
When switching on the ignition, the
UREA warning lamp comes on, accompanied
by an audible signal and the display of a
message (e.g.: "Top up emissions additive:
Starting prevented in 900 miles") indicating
the remaining range expressed in miles or
kilometres.
When driving, the message is displayed every
200 miles (300 km) until the additive tank has
been topped-up.
Go to a CITROËN dealer or a qualified
workshop to have the AdBlue
® tank topped-up.
You can also top-up the tank yourself.
For more information on topping-up the
AdBlue
® additive, refer to the corresponding
section.
Remaining range between 0 and 350 miles (0 and 600 km)
When switching on the ignition, the SERVICE
warning lamp comes on and the UREA warning
lamp flashes, accompanied by an audible
signal and the display of a message (e.g.
"Top up emissions additive: Starting prevented
in 350 miles") indicating the remaining range
expressed in miles or kilometres.
When driving, the message is displayed every
30 seconds until the additive tank has been
topped-up.
Go to a CITROËN dealer or a qualified
workshop to have the AdBlue
® tank topped-up.
You can also top-up the tank yourself.
Other wise you will not be able to restart your
engine. When switching on the ignition, the SERVICE
warning lamp comes on and the UREA warning
lamp flashes, accompanied by an audible
signal and the display of the message "Top up
emissions additive: Starting prevented".
The AdBlue
® tank is empty: the system required
by regulations prevents engine starting.
Breakdown related to a lack of AdBlue® additive
To be able to start the engine,
we recommend that you call on
a CITROËN dealer or a qualified
workshop for the top-up required.
If you carry out the top-up yourself, it
is essential to add at least 3.8 litres of
AdBlue
® to the tank.
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In the event of a fault with the the SCR emissions control system
A system that prevents engine starting is activated automatically from 650 miles (1 100 km) after confirmation of a fault with the SCR emissions control
system. Have the system checked by a CITROËN dealer or a qualified workshop as soon as possible.You have exceeded the authorised
driving limit: the starting prevention
system inhibits engine starting.
If it is a temporary fault, the alert
disappears during the next journey,
after self-diagnosis of the SCR system.
The UREA, SERVICE and diagnostic warning
lamps comes on, accompanied by an audible
signal and the display of the message
"Emissions fault".
The alert is triggered when driving when the
fault is detected for the first time, then when
switching on the ignition for subsequent
journeys, while the fault persists. In the event of the detection of a fault
If a fault with the SCR system is confirmed (after
30
miles (50 km) covered with the permanent display
of the message signalling a fault), the SERVICE and
engine diagnostic warning lamps come on and the
UREA warning lamp flashes, accompanied by an
audible signal and the display of a message (e.g.:
"Emissions fault: Starting prevented in 150 miles")
indicating the remaining range express in miles or
kilometres.
While driving, the message is displayed every
30
seconds while the fault with the SCR system
persists.
The alert is repeated when switching on the ignition.
You should go to a CITROËN dealer or a qualified
workshop as soon as possible.
Other wise, you will not be able to restart your engine.
During an authorised driving phase (between
650 miles and 0 miles) (1 100 km and 0 km)
Every time the ignition is switched on, the
SERVICE and engine diagnostic warning
lamps come on and the UREA warning lamp
flashes, accompanied by an audible signal and
the display of the message "Emissions fault:
Starting prevented". Starting prevented
To be able to start the engine, you must call on
a CITROËN dealer or a qualified workshop.
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F Obtain a bottle of AdBlue®. After first
checking the use-by date, read carefully
the instructions on use on the label before
pouring the contents of the bottle into your
vehicle's AdBlue
® tank.
Important : if your vehicle's
AdBlue
® tank is completely empty -
w
hich is confirmed by the alert
messages and the impossibility of
starting the engine, you must add at
least 3.8 litres (so two 1.89 litre bottles). If any additive is split or splashed, wash
immediately with cold water or wipe with
a damp cloth.
If the additive has crystallised, clean it
off using a sponge and hot water.
Important:
in the event of a top-up after
a breakdown because of a lack of
additive , you must wait around 5 minutes
before switching on the ignition, without
opening the driver's door, locking the
vehicle or introducing the key into the
ignition switch .
Switch on the ignition, then, after
10

seconds, start the engine.
Never dispose of AdBlue
® additive
bottles in the household waste. Place
them in a special container provided
this purpose or take them to your dealer.
F

A

fter emptying the bottle, wipe away any
spillage around the tank filler using a damp
cloth.
F

R

efit the blue cap to the tank and turn it a
6th of a turn clockwise, to its stop.
F
R
efit the black cap and turn it a quarter of
a turn clockwise without pressing. Ensure
that the indicator on the cap lines up with
the indicator on the support.
F

D

epending on equipment, return the spare
wheel and/or the storage box to the bottom
of the boot.
F

R

efit the boot carpet and close the tailgate.
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Fuse N°Rating Functions
F8 20 AMultifunction screen, audio system, navigation radio.
F9 30 AAudio system (aftermarket), 12 V socket.
F10 15 ASteering wheel controls.
F11 15 AIgnition, diagnostic socket.
F12 15 ARain / sunshine sensor, trailer relay unit.
F13 5 AMain stop switch, engine relay unit.
F14 15 AParking assistance control unit, seat belt unfastened warning
lamp, airbag control unit, instrument panel, air conditioning,
USB Box.
F15 30 ALocking.
F16 -Not used.
F17 40 ARear screen and door mirrors demist/defrost.
SH -PARC shunt.
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Engine compartment fuses
The fusebox is placed in the engine
compartment near the battery (left-hand side).
Access to fuses
F Unclip the cover.
F C hange the fuse (see corresponding
paragraph).
F

W
hen you have finished, close the cover
carefully to ensure the correct sealing of
the fusebox.
All work on these fuses, located on
the battery, must be carried out by
a CITROËN dealer or a qualified
workshop.
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Fuse table
Fuse N°Rating Functions
F1 20 AEngine control unit supply, cooling fan unit control, multifunction
engine control main relay.
F2 15 AHorn.
F3 10 AFront / rear wash-wipe.
F4 20 ADaytime running lamps.
F5 15 ADiesel heater (Diesel engine), fuel pump (petrol engine)
F6 10 AABS/ESP control unit, ABS/ESP cut-off relay, secondary stop
switch.
F7 10 AElectric power steering.
F8 25 AStarter motor control.
F9 10 ASwitching and protection unit (Diesel).
F10 30 ADiesel engine injection pump valve, injectors and ignition coils
(petrol engine)
F11 40 AAir conditioning fan.
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Fuse N°Rating Functions
F12 30 AWindscreen wipers slow / fast speed.
F13 40 ABuilt-in systems inter face supply (ignition positive).
F14 30 AValvetronic supply (petrol).
F15 10 ARight-hand main beam headlamp.
F16 10 ALeft-hand main beam headlamp.
F17 15 ALeft-hand dipped beam headlamp.
F18 15 ARight-hand dipped beam headlamp.
F19 15 AMultifunction engine management supply (petrol engine), air
cooling electrovalves (Diesel).
F20 10 AMultifunction engine management supply (petrol engine), Turbo
pressure regulation electrovalve (Diesel), engine coolant level
sensor (Diesel).
F21 5 AFan assembly control supply, APC, ABS ESP relays.
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BatteryProcedure for charging your battery when it is flat or for starting the engine using another battery.
Access to the battery
The battery is located under the bonnet.
To gain access to it:
F
o
pen the bonnet using the interior release
lever, then the exterior safety catch,
F

s
ecure the bonnet stay,
F

l
ift the plastic cover on the (+) terminal. First check that the slave battery has a
nominal voltage of 12 V and a capacity
at least equal to that of the discharged
battery.
Do not try to start the engine by
connecting a battery charger.
Do not disconnect the (+) terminal when
the engine is running.
F

C
onnect the red cable to the positive
terminal (+) of the flat battery A , then to the
positive terminal (+) of the slave battery B.
F

C
onnect one end of the green or black
cable to the negative terminal (-) of the
slave battery B (or earth point on the other
vehicle).
F

C
onnect the other end of the green or
black cable to the negative terminal C (or
the engine mounting) of the broken-down
vehicle.
F

S
tart the engine of the other vehicle and
allow it to run for a few minutes.
Starting using another
battery
When the battery on your vehicle is discharged,
the engine can be started using a slave battery
(external or on another vehicle) and jump leads.
F

O
perate the starter of the broken-down
vehicle and let the engine run.
I

f the engine does not start immediately,
switch off the ignition and wait a few
moments before trying again.
F

W
ait until the engine returns to idle, then
disconnect the jump leads in reverse order.
Some functions are not available if the
battery is not sufficiently charged.
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