1997 RENAULT KANGOO dashboard

DI8816 DI8817
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Airbags and seat belt pretensioners
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FUNCTION AND OPERATION OF THE AIRBAGS AND PRETENSIONERS
1) Function
In the event of an accident, the airbag prevents the head striking the steering wheel or dashboard.
It also reduces the maximum acceleration of the head, by absorption.
2) Trigger threshold
Generally speaking, there are four different basic situations.
1) FRONTAL IMPACT AGAINST A OBSTACLE
The trigger speed depends on the obstacle’s
surface. The softer the surface, the higher the
speed.
The pretensioner generally triggers at a lower
speed than the airbag.
2) OFFSET IMPACT AGAINST A OBSTACLE
In this case, the airbag trigger speed depends on
the angle of impact α.
The greater the angle, the higher the vehicle
speed for triggering.
ADirection of travel
BCentre of gravity
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92656S
The new 30-track computers are provided with
the K and L lines for fault finding with the XR25
(except for vehicles with pretensioners only).
This enables computer faults or faulty lines to be
detected in the system (see section on fault fin-
ding).
NOTE: before each operation an auxiliary func-
tion enables the ignition lines to be de-activated
to prevent the risk of triggering the pyrotechnic
gas generators.
Various vehicle configurations are possible:
Vehicle fitted with:
- pretensioners only,
- pretensioners and driver’s airbag,
- pretensioners and driver’s airbag and passen-
ger’s airbag.
NOTE :
• A vehicle fitted with a driver’s airbag will be
identified by a label in the bottom corner of
the windscreen on the driver’s side, and by the
word "Airbag" in the centre of the steering
wheel.
• If a passenger airbag is fitted, a second label is
located in the lower corner of the windscreen
on the passenger side and the word "Airbag" is
located on the dashboard on the same side.
Each time the windscreen is replaced, remember
to fit the labels showing that the vehicle is fitted
with airbags.
These labels are available in a kit Part Number :
77 01 205 442.
SPECIAL TOOLING
PRESENTATION
XR25
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WARNING LIGHT ON THE DASHBOARD
This warning light controls the pretensioners and
airbags, except for vehicles fitted with pretensio-
ners only.
It should illuminate for a few seconds when the
ignition is switched on, then extinguish (and
remain extinguished). If it does not illuminate
when the ignition is switched on, or illuminates
when the vehicle is being driven, there is a fault in
the system (see fault finding section).
IMPORTANT : the systems MUST be checked by
means of the
XRBAG, following:
- an accident which has not given rise to
triggering,
- theft or attempted theft of the vehicle,
- before the sale of a used vehicle.
These systems are not triggered in the case of:
- a lateral impact,
- a rear impact.
When it is triggered the pyrotechnic gas
generator produces an explosion combined with
light smoke.
NOTE : With pretensioners only,the computer has
a single sensor (electromechanical).
OPERATIONS ON THE TRIGGER LINES
If a fault is noted on one of these lines, the
component must be renewed and not repaired.
This safety equipment cannot be subjected to any
conventional wiring or connector repair opera-
tions.
The airbag trigger wiring is integrated into the
passenger compartment wiring loom . To make
replacement easier, cut the two ends of the faulty
wiring and run the new wiring along the same
routing, alongside the passenger compartment
wiring loom.
IMPORTANT : When fitting the new wiring, en-
sure it is not in danger of being cut or rubbed and
that the original wiring cleanliness is respected.
NOTE : The trigger lines are supplied by the Parts
Department in a kit containing both airbag and
pretensioner wiring.
OPERATION WITH AIRBAG(S) AND PRETENSIONER
EQUIPMENT
When the ignition is switched on, the
warning light illuminates for a few
seconds then extinguishes.
This computer is then on standby and notes dece-
lerations of the vehicle using the signal measured
by the integral decelerometer.
When a frontal impact of sufficient strength oc-
curs it triggers the simultaneous ignition of the
pyrotechnic generators of the two seat belt pre-
tensioners after receiving confirmation of detec-
tion of an impact by the electromechanical safety
sensor.
Under the action of the gases generated by the
system, a piston is displaced in its cylinder,
carrying with it a cable connected to the
corresponding central catch, thus enabling the
seat belt to be retracted (see pretensioner
section).
If the frontal impact is greater than this, the dece-
lerometer triggers the ignition of the pyrotechnic
gas generators which inflate the driver and pas-
senger airbags once the impact has been valida-
ted by the electromechanical safety sensor.
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Airbags and seat belt pretensioners
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PASSENGER AIRBAG MODULE
DESCRIPTION:
It is located in the dashboard, opposite the front
seat passenger.
It comprises:
- an inflatable cushion,
- two pyrotechnic gas generators and ignition
modules.
LOCATION
The components of the airbag module cannot be
separated.
98124S
NOTE : When it is triggered, the airbag opens the
plastic cover of the passenger airbag module.
Warning light on the instrument panel
shows the correct operation of the airbags and
the pretensioners.
NOTE : this system is operational after the ignition
has been turned on. A vehicle fitted with a pas-
senger’s airbag will be identified by a label in the
bottom corner of the windscreen on the passen-
ger’s side, and by the word "Airbag" on the dash-
board on the same side. Two additional labels on
the front window and the side of the dashboard
indicate that a child seat cannot be fitted to the
front seat. The passenger must not set his feet on
the dashboard or stick or pin objects to the dash-
board (refer to the Driver’s Handbook).
Each time the windscreen (or passenger door win-
dow) is replaced, remember to fit the labels sho-
wing that the vehicle is fitted with airbags.These
labels are available in a kit Part Number : 77 01
205 442.
REMINDER : The computer must be replaced after
the airbag has been triggered. Certain compo-
nents will lose their nominal characteristics after
the trigger energy has passed through them.
13060S
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IMPORTANT: The pyrotechnic systems (airbag
and pretensioners) must not be handled near a
heat source or flame; there is a risk of triggering.
NOTE: For these vehicles, the computer may be
locked using the XR25 and command G80* (ISO
selector on S8 code D49) during the operation.
When this function is active, all the trigger lines
are inhibited, the airbag warning light on the ins-
trument panel and bargraph 14 LH on the XR25 il-
luminate (new computers are supplied in this
condition).
After the operation, carry out a check using the
XR25.
If everything is correct, unlock the computer using
command G81*.
13064S
REMOVAL
The dashboard must be removed to remove the
passenger airbag module (see "Removing -
refitting the dashboard", section 83).
Then remove the airbag module (four nuts).
IMPORTANT : When the passenger airbag module
is triggered, the damage to its mountings means
that the dashboard must be renewed.
IMPORTANT : before scrapping a non-triggered
airbag it
MUST be destroyed in accordance with
the method for destruction of the driver’s airbag
(see section "Destruction procedure": destruction
of part removed from the vehicle).
Accessibility of passenger airbag ignition mo-
dules for fault finding
The dashboard must be removed to reach the pas-
senger airbag ignition modules.
IMPORTANT : The ignition module must be
checked using the XRBAG as indicated in the
"Fault finding" section.
REPLACING THE PASSENGER AIRBAG MODULE
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REFITTING
IMPORTANT: The following safety advice MUST
be followed when refitting or replacing a passen-
ger airbag module. If these instructions are not
followed the system may not operate normally
and could even cause a risk for the vehicle occu-
pants.
IMPORTANT :
Refitting is the reverse of removal. The tightening
torque of the 4 module mounting bolts
(0.6 daN.m)
MUST be observed.
• Renew the "System tamperproof " label with a
blue After Sales label sold in kit Part Number
77 01 205 356 for all types.
• Remember to remove all foreign bodies (bolts,
clips) when fitting the airbag.
IMPORTANT :
Before reconnecting the passenger airbag module
and refitting the dashboard, the system wiring
must be checked.
Fit a dummy ignition module (Elé. 1288) to the
passenger airbag module connector.
Connect the 30 track adapter of the XRBAG to the
orange 30 track connector on the computer
wiring.
After supplying power to the XRBAG (battery),
connect the white 2 track measuring connector to
wiring (C) of the adapter, and the measurement
should be between 1.8 and 4.6 Ω.
If the measurements are correct:
• Disconnect the dummy ignition module.
• Connect the wiring to the passenger airbag
ignition module (by offering up the dashboard)
and connect the white 2 track measuring
connector of the XRBAG once more to wiring
(C) of the adapter, and the measurement
should be between 1.8 and 4.6 Ω.
If the measurements are correct:
• Refit the dashboard.
• Use the XR25 to check no faults are present in
the system.
• Unlock the computer using command G81*.
• Check that the airbag warning light illuminates
for 3 seconds when the ignition is switched on
then extinguishes and remains extinguished.
If the warning light does not operate as described
above, or the values measured are incorrect, refer
to the "Fault finding" section.
PRD99498
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