2014 Citroen JUMPER ecu

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Driving safely
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HORN
Press the centre of the steering wheel.
Anti-lock braking system and electronic brake force distribution
Linked systems which improve the stability
and manoeuvrability of your vehicle when
braking, in particular on poor or slippery
surfaces.
Operation
The anti-lock braking system comes into
operation automatically when there is a risk
of wheel lock.
Normal operation of the ABS may make
itself felt by slight vibration of the brake
pedal accompanied by some noise.
When braking in an emergency, press
very firmly without releasing the
pressure.
Switching off
These systems cannot be deactivated by
the driver.
BRAKING ASSISTANCE SYSTEMS
Group of supplementary systems which help
you to obtain optimum braking in complete
safety in emergency situations:
- anti-lock braking system (ABS),
- electronic brake force distribution (EBFD),
- emergency braking assistance (EBA).

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Good practice
The ABS system does not provide shorter
braking distances. On very slippery surfaces
(black ice, oil...) the ABS can extend braking
distances. For emergency braking, press the
brake pedal hard and do not release it, even
on a slipper surface; you will then be able to
steer the vehicle and avoid an obstacle.
When replacing wheels (tyres and
rims), ensure that they conform to the
manufacturer's recommendations. Emergency braking assistance
System which, in an emergency, enables
you to obtain the optimum braking pressure
more quickly, thus reducing the stopping
distance.
Operation
It is triggered by the speed at which the
brake pedal is pressed.
The effect of this is a reduction in the
resistance of the pedal and an increase in
braking efficiency.
Switching off
This system cannot be deactivated by
the driver.
Operating fault
If this warning lamp comes on,
accompanied by an audible signal
and a message in the instrument
panel screen, it indicates a fault with
the anti-lock braking system which could result in
loss of control of the vehicle when braking.
For maximum braking efficiency, a
bedding-in period of around 300 miles
(500 kilometres) is needed. During this
period it is recommended that you avoid
harsh, repeated or prolonged braking. If this warning lamp comes on,
together with the
ABS warning
lamp, accompanied by a message
in the instrument panel screen,
it indicates a fault with the electronic brake
force distribution which could result in loss
of control of the vehicle when braking.
You must stop as soon as it is safe to do so.
In either case, contact a CITROËN dealer or
a qualified workshop. When braking in an emergency, press
firmly without releasing the pressure.

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TRAJECTORY CONTROL SYSTEMS
Switching off
This system cannot be deactivated by
the driver.
Dynamic stability control (DSC)
The electronic stability programme acts on
the brake of one or more wheels and on the
engine to keep the vehicle on the trajectory
required by the driver, within the limits of the
laws of physics.
With the DSC system, maintain course
without trying to countersteer.
Operation
The DSC system is activated automatically
each time the vehicle is started. Operating fault
Illumination of this warning lamp,
accompanied by an audible signal
and confirmed by a message
in the instrument panel screen,
indicates a fault with the DSC system.
Have it checked by a CITROËN dealer or a
qualified workshop. Operation
This system is activated automatically every
time the vehicle is started.
In the event of a problem of adhesion or
trajectory, this system comes into play.
Switching off
In exceptional conditions (starting a vehicle
which is bogged down, stuck in snow,
on soft ground...), it may be advisable to
deactivate the ASR system, so that the
wheels can spin freely and regain grip.
- Press this button, located in the
middle of the dashboard, to deactivate
the system.
Anti-slip regulation (ASR)
Anti-slip regulation (also known as traction
control) optimises traction, avoiding wheel
spin by acting on the brakes of the driving
wheels and the engine.
If the button's warning lamp comes
on, accompanied by a message in the
instrument panel screen, this indicates that
the ASR system is deactivated.
It comes into operation in the
event of a grip or trajectory
problem.
This is indicated by flashing of this warning
lamp in the instrument panel.

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Reactivation
The ASR system is reactivated automatically
every time the ignition is switched back on.
- Press this button again to reactivate it manually.
Operating fault If this warning lamp comes on,
accompanied by an audible signal
and a message in the instrument
panel screen, this indicates a fault
with the ASR system.
Have it checked by a CITROËN dealer or a
qualified workshop.
Good practice
The DSC and ASR systems offer exceptional
safety in normal driving, but this should not
encourage the driver to take extra risks or
drive at high speed.
The correct operation of these systems
depend on observation of the manufacturer's
recommendations regarding the wheels
(tyres and rims), the braking components,
the electronic components and assembly
and repair procedures.
After an impact, have these systems
checked by a CITROËN dealer or a qualified
workshop.
Intelligent Traction Control
System to improve traction on slippery
surfaces (snow, black ice, mud...)
This system checks for situations of difficult
surface adhesion that could make it difficult
to move off or make progress.
In these situations, Intelligent Traction
Control takes over from the ASR system,
by transferring drive to the wheel with the
best grip on the ground to provide the best
traction and trajectory control.
Load inertia control
The true total weight of a commercial vehicle
can vary considerably depending on the load
carried. As a result, the centre of gravity of
the vehicle can move, both longitudinally
and in height.
All such variations have an effect on braking,
traction, the behaviour of the vehicle when
cornering and the tendency to overturn.
Load inertia control estimates the true
total weight of the vehicle by analysing its
behaviour under acceleration and braking.
This system then adapts the operation of
the DSC and ASR systems according to the
weight distribution in the vehicle. In critical
situations, your vehicle than remains more
securely on its intended trajectory.

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System that provides assistance when
descending on surfaces with poor grip
(mud, gravel...).
This system reduces the risk of slip or loss
of control of the vehicle while descending a
hill.
It operates together with the Intelligent
Traction Control .
Hill descent control
Switching on
On starting the vehicle, the system is deactivated.
Press this button, located in the middle of the
dashboard, to activate the system; the indicator
lamp in the button comes on.
For the system to operate, the slope must be
steeper than 8%.
This system is active up to about 18 mph
(30 km/h).
As soon as the speed of the vehicle exceeds
18 mph (30 km/h), the system is automatically
deactivated, but the indicator lamp in the button
stays on.
The system reactivates automatically as soon
as the speed of the vehicle drops below 18 mph
(30 km/h).
Switching off
Press this button, located in the middle of
the dashboard, to deactivate the system; the
indicator lamp in the button goes off.
Operating fault
If a fault occurs with the hill
descent control system, this
warning lamp comes on.
Have the system checked by a CITROËN
dealer or a qualified workshop.
Switching on
On starting the vehicle, this system is
deactivated.
Press this button, located in the middle of
the dashboard, to activate the system; the
indicator lamp in the button comes on.
This system is active up to about 18 mph
(30 km/h).
Once the speed exceed 18 mph (30 km/h),
the system is deactivated automatically, but
the indicator lamp in the button stays on.
The system is reactivated automatically as
soon as the speed drops below 18 mph
(30 km/h).
Switching off
Press this button, located in the middle of
the dashboard, to deactivate the system;
the indicator lamp in the button goes off and
the ASR system is active again.
Operating fault If a fault occurs with the intelligent
traction control system, this
warning lamp comes on.
Have the system checked by a CITROËN
dealer or a qualified workshop.

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LANE DEPARTURE WARNING SYSTEM
System which detects the involuntary
crossing of longitudinal traffic lane markings
on the ground (continuous or discontinuous
line).
A camera, fitted at the top centre of the
windscreen, monitors the road and triggers
a warning if the vehicle drifts (speed higher
than 35 mph (60 km/h)).
This system operates to its full potential
above all when used on motorways and
main roads.
Switching off
- Press this button to switch off the system, the indicator lamp in the button
comes on.
The status of the system remains in the
memory when the ignition is switched off.
Switching on
- Press this button to switch the system on, the indicator lamp in the button
goes off.
Detection
If a change of direction is detected, you are
alerted by a warning lamp in the instrument
panel and an audible signal:
Operating fault
If a fault occurs with the system,
this warning lamp comes on,
accompanied by an audible
message and confirmed by a
message in the screen.
Have the system checked by a CITROËN
dealer or a qualified workshop.
The lane departure warning system
cannot, in any circumstances, replace
the need for vigilance and responsibility on
the part of the driver. - fl ashing of the left hand warning
lamp, if drifting to the left,
No warning is transmitted while the direction
indicator is active and for approximately
20 seconds after the direction indicator is
switched off.
A warning may be transmitted if a direction
marking (arrow) or non-standard marking (graffi ti)
is crossed.
The detection may be disrupted:
- if the markings on the ground are worn,
- if there is little contrast between the markings on the ground and the road surface. - fl ashing of the right hand warning
lamp, if drifting to the right.

Seat belts
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CAB SEAT BELTS
The front seats are fitted with pre-tensioners
and force limiters.
The bench rear seat is fitted with two seat
belts.
If you install a bench seat after handover, it
must be fitted with seat belts.
REAR SEAT BELTS
The seats/bench seats are fitted with three-
point seat belts and inertia reels.
The centre seat has a seat belt guide and
inertia reel, solid with the seat back.
Height adjustment
Squeeze the control with the return and slide
the assembly on the driver's seat side and
on the side passenger seat side.
The height of the seat belt associated with
the centre seat cannot be adjusted.
Fastening
Pull the strap in front of you, with an even
movement, ensuring that it does not twist.
Secure the buckle in its housing.
Check that the seat belt is fastened securely
and that the automatic locking system is
operating correctly by pulling the strap
rapidly.
Unfastening
Press the "red" button on the buckle
housing, the seat belt rolls up automatically
but you are advised to guide it. As a safety precaution, these
operations should not be carried out
while the vehicle is moving.
Driver's seat belt not fastened warning lamp
CREW CAB
Each rear seat is fitted with a three-point
inertia reel seat belt.
Use the seat belt to restrain one person only
per seat.
If the driver's seat belt is unfastened,
START mode of Stop & Start will not be
invoked. Engine restarting is only possible
with the ignition key. When the vehicle is started, this warning
lamp comes on if the driver has not fastened
their seat belt.

Seat belts
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The force limiter reduces the pressure
of the seat belt against the body of the
occupants.
The pretensioning seat belts are active when
the ignition is switched on.
The inertia reels are fitted with a device
which automatically locks the strap in the
event of a collision or emergency braking or
if the vehicle rolls over.
You can unfasten the seat belt by pressing
the red button on the buckle. Guide the seat
belt after unfastening. Good practice
The driver must ensure that passengers
use the seat belts correctly and that they
are all strapped in securely before
moving off.
Wherever you are seated in the vehicle,
always fasten your seat belt, even for short
journeys.
The seat belts are fitted with an inertia reel
which automatically adjusts the length of the
strap to your size.
Do not use accessories (clothes pegs, clips,
safety pins, etc.) which allow the seat belt
straps to fit loosely.
Ensure that the seat belt has reeled in
correctly after use.
After folding or moving a seat or
a rear bench seat, ensure that the seat
belt has reeled in correctly and that
the buckle is ready to accommodate
the tongue.
Depending on the nature and seriousness of
any impact, the pretensioning device may be
deployed before and independently of infl ation
of the airbags. It instantly tightens the seat
belts against the body of the occupants.
Deployment of the pretensioners is
accompanied by a slight discharge of
harmless smoke and a noise, due to the
activation of the pyrotechnic cartridge
incorporated in the system. The airbag warning lamp also
comes on if the pretensioners are
deployed. Contact a CITROËN
dealer or a qualified workshop.
In order to be effective, a seat belt:
- must restrain one person only,
- must not be twisted, check by pulling in front of you with an even movement,
- must be tightened as close to the body as possible.
The upper part of the seat belt should be
positioned in the hollow of the shoulder.
The lap part should be placed as low as
possible on the pelvis. Do not invert the seat belt buckles as they
will not fulfil their role completely. If the
seats are fitted with armrests, the lap part of
the seat belt should always pass under the
armrest.
Check that the seat belt is fastened correctly
by pulling the strap firmly.
Recommendations for children
Use an appropriate child seat if the
passenger is under 12 years or less than
one and a half metres tall.
Never carry a child on your knees, even with
the seat belt fastened.
For more information on child seats,
refer to the "Safety - Children on board"
section.
In accordance with current safety
regulations, your CITROËN dealer can
guarantee all work or any checks, from
testing to maintenance, on your seat belt
equipment.
Have the seat belts checked regularly (even
after a minor impact) by a CITROËN dealer
or a qualified workshop: they must not show
any signs of wear, cutting or fraying and they
must not be converted or modified.
Clean the seat belt straps with soapy
water or a textile cleaning product, sold
by CITROËN dealers.