1999 RENAULT CLIO light

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Air bags and seat belt pretensioners
88
Connection
NOTE : the computer connector has a special fea-
ture in that it short circuits the various trigger
lines when it is disconnected. In effect, the shunts,
located opposite each pretensioner or air bag line,
prevent incorrect triggering of the system (by an-
tenna effect for example).
Yellow 30 track connector
(full connection)
Track Description
1 + driver’s pretensioner
2 - driver’s pretensioner
3 + passenger pretensioner
4 - passenger pretensioner
5 + after ignition feed
6 Earth
7Air bag warning light on the instrument
panel
8 Not used
9 Diagnostic line"K"
10 + driver’s air bag
11 - driver’s air bag
12 Not used
13 + passenger’s air bag
14 - passenger’s air bag
15 Not used
16 Shunt
17 Shunt
18 Shunt
19 Shunt
20 Earth
21 Shunt
22 Shunt
23 Diagnostic line "L"
24 Not used
25 Shunt
26 Shunt
27 Not used
28 Shunt
29 Shunt
30 Not used50 track orange connector
Track Description
1 + driver’s pretensioner
2 - driver’s pretensioner
3 + passenger pretensioner
4 - passenger pretensioner
5 + after ignition feed
6 Earth
7Air bag warning light on the
instrument panel
8 Not used
9 Diagnostic line"K"
10 + driver’s air bag
11 - driver’s air bag
12 Diagnostic line "L"
13 + passenger’s air bag
14 - passenger’s air bag
15 Not used
16 + driver’s side air bag
17 - driver’s side air bag
18 - passenger’s side air bag
19 + passenger’s side air bag
20 Driver’s side impact sensor signal
21 - driver’s side impact sensor
22 - passenger’s side impact sensor
23 Passenger side impact sensor signal
24 Not used
25 Not used
26 to 29 Shunt
30 Not used
31 Shunt
32 Shunt
33 Not used
34 Not used
35 Shunt
36 Shunt
37 Not used
38 Shunt
39 Shunt
40 Not used
41 to 44 Shunt
45 to 50 Not used
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Air bags and seat belt pretensioners
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WARNING LIGHT ON THE INSTRUMENT PANEL
This warning light controls the pretensioners and
the driver and passenger air bags.
It must illuminate for several seconds when the
ignition is switched on, then extinguish (and re-
main extinguished).
Not illuminating when the ignition is switched on
or illuminating when the vehicle is moving indi-
cates a fault in the system (see "Fault Finding" sec-
tion).
SIDE IMPACT SENSORS
(according to equipment)
IMPORTANT : before removing a side impact sen-
sor, lock the computer using a fault finding tool.
When this operation is activated, all the trigge-
ring lines are inhibited, the air bag warning light
on the instrument panel is illuminated.
REMINDER : for vehicles fitted with self contained
air bags, see Technical Note 3064A.
Removal
They are located on each side under the the inner
sill trim.
To access it :
- remove the two sensor mounting bolts, pas-
sing the wrench under the seat runner,
- disconnect the sensor.
NOTE : removing the seat is not necessary.
15812R
15811S
Removed sensor
IMPORTANT: In the event of the side air bag
being triggered, the computer illuminates the air
bag warning light on the instrument panel. The
side impact sensor must be replaced (certain
components lose their nominal specifications af-
ter the triggering energy has passed through
them).
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Air bags and seat belt pretensioners
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When triggered, the system can retract the buckle
by 70 mm (maximum).
DI8802
The pretensioner’s components can not be
separated.
NOTE : this system is operational when the
ignition has been switched on.
Removal
IMPORTANT:The pyrotechnic systems (pretensio-
ners or air bags) must not be handled when near a
heat source or a flame because there is a risk that
the system will be triggered.
IMPORTANT
Before removing a pretensioner, lock the
computer using the fault finding tool.
When this function is activated, all trigger lines
are inhibited, the air bag warning light on the ins-
trument panel is illuminated.
Remove:
- the pretensioner connector located under the
front seat,
- the pretensioner assembly, after having remo-
ved the protective trim.
IMPORTANT : before scrapping an untriggered
pretensioner module, it
MUST be destroyed in ac-
cordance with the method described in the
"Destruction Procedure" section (except parts
which can be returned under warranty).
Refitting
Observe the wiring routing and the mounting
points under the seat.
NOTE : press the connector in firmly on the pre-
tensioner side (C) (strong clipping system).
IMPORTANT : after replacing the faulty parts and
reconnecting the connectors, carry out a check
using the fault finding tool.
Unlock the computer if everything is correct,
otherwise see the"Fault Finding" section.
REMINDER: the computer in these vehicles can wi-
thstand several triggerings. Therefore, it does not
have to be replaced after every triggering of the
air bag(s) or pretensioners (see "Computer" sec-
tion).
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Air bags and seat belt pretensioners
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IMPORTANT : before removing the air bag cus-
hion, lock the computer using the fault finding
tool.
When this operation is activated, all the trigge-
ring lines are inhibited, the air bag warning light
on the instrument panel is illuminated
Removal
IMPORTANT:The pyrotechnic systems (pretensio-
ners or air bags) must not be handled when near a
heat source or a flame because there is a risk that
the system will be triggered.
IMPORTANT : When removing the steering wheel,
the air bag connector must be disconnected (D)
(see below).
The air bag is fitted with a connector which short
circuits when it is disconnected to avoid incorrect
triggering .
Remove the air bag cushion by its two torx bolts
located behind the steering wheel and disconnect
its connector (D).
14036R1
IMPORTANT : before scrapping an untriggered air
bag module, it
MUST be destroyed in accordance
with the method described in the "Destruction
Procedure" section
Refitting
Reconnect the air bag cushion and mount it to
the steering wheel (tightening torque : 0.5
daN.m).
NOTE :press the connector in firmly on the cus-
hion side (D) (strong clipping system).
IMPORTANT : after refitting everything,carry out
a check using the fault finding tool .
Unlock the computer if everything is correct,
otherwise see the"Fault Finding" section.
REMINDER: the computer in these vehicles can wi-
thstand several triggerings. Therefore, it does not
have to be replaced after every triggering of the
air bag(s) or pretensioners (see "Computer" sec-
tion).
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Air bags and seat belt pretensioners
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IMPORTANT : before removing the air bag cus-
hion, lock the computer using the fault finding
tool.
When this operation is activated, all the trigge-
ring lines are inhibited, the air bag warning light
on the instrument panel is illuminated.
ROTARY SWITCH
The rotary switch ensures the electrical connec-
tion between the steering column and the stee-
ring wheel.
It consists of a strip with two conducting tracks
(air bag) of which the length is long enough to al-
low 2.5 turns of the steering wheel (full lock plus
safety) for each side.
Removal
IMPORTANT:The pyrotechnic systems (pretensio-
ners or air bags) must not be handled when near a
heat source or a flame because there is a risk that
the system will be triggered.
IMPORTANT : When removing the steering wheel,
the air bag connector must be disconnected (D)
(see below). The air bag is fitted with a connector
which short circuits when it is disconnected to
avoid incorrect triggering .
14036R1
Remove :
- the air bag cushion by its two torx bolts located
behind the steering wheel and disconnect its
connector (D).
- the steering wheel bolt,
- the steering wheel after positioning the wheels
straight,
- the half cowlings (three bolts).
Disconnect the stalks (windscreen wipers and
lights) and the rotary switch connector.
Before removing the assembly, the rotary switch
position must be noted:
- by ensuring that the wheels are straight during
removal in order to position the length of the
strip in the centre ,
- by checking that the mark "0" is correctly posi-
tioned opposite the fixed index (E).
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Air bags and seat belt pretensioners
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It consists of:
- an inflatable cushion,
- a pyrotechnic gas generator and ignition mo-
dule.
98124S
The air bag module components cannot be sepa-
rated.
NOTE : this system is operational when the igni-
tion has been switched on.
Accessing the ignition module
To access the ignition module of the passenger air
bag module, the upper part of the dashboard
must be removed.
Important, if the vehicle is fitted with a red
connector with lugs, see the recommendations on
the following page.
REMINDER: the ignition module check for the mo-
dule must be carried out using the
XRBAG as des-
cribed in the "Fault Finding" section.Removal
IMPORTANT:The pyrotechnic systems (pretensio-
ners or air bags) must not be handled when near a
heat source or a flame because there is a risk that
the system will be triggered.
IMPORTANT : Before removing a passenger air
bag module, lock the computer using the fault
finding tool.
When this operation is activated, all of the trigge-
ring lines are inhibited, the air bag warning light
on the instrument panel is illuminated.
To remove the passenger air bag module the up-
per part of the dashboard must be removed.
Remove:
- the windscreen pillar trim sections,
- the half cowlings under the steering wheel
- the mounting bolts on the upper part of the
dashboard and release it (for more details see
"section 83 in MR 337").
Disconnect the ignition module.
The passenger air bag module is mounted by six
bolts.
14092R1
IMPORTANT : In the event that the passenger air
bag module should be triggered, the deforma-
tion of the mountings (microcracks) means the
metal dashboard support beam must be replaced.
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Air bags and seat belt pretensioners
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Removal - Refitting
Any operation involving removal and refitting of
the seat trim of a seat back fitted with a side air
bag, must not be carried out for the time being.
In case of a fault on the air bag cushion or follo-
wing its inflation, the whole seat must be repla-
ced following the specific Parts Department or-
der procedure .
REMINDER: the computer in these vehicles can wi-
thstand several triggerings. Therefore, it does not
have to be replaced after every triggering of the
air bag(s) or pretensioners (see "Computer" sec-
tion).
On the other hand, in the event of a triggering
being caused, the side impact sensor must be re-
placed (certain components lose their nominal
specifications after the triggering energy has pas-
sed through them).
IMPORTANT :
• Before removing a seat, lock the computer
using the fault finding tool.
When this operation is activated, all the trig-
gering lines are inhibited and the air bag war-
ning light on the instrument panel is illumina-
ted.
• When refitting, after replacing the seat and
reconnecting the connectors, carry out a check
using the fault finding tool. Unlock the
computer if everything is correct, otherwise
see the"Fault Finding" section.
IMPORTANT : before scrapping an untriggered air
bag module, it
MUST be destroyed in accordance
with the method described in the "Destruction
Procedure" section
96832R
DESTRUCTION PROCEDURE
To avoid the risk of an accident, the pyrotechnic
gas generators must be triggered before scrap-
ping a vehicle or a single part.
Tool Elé. 1287 must be used.
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This fault finding section comprises two parts :
- For systems only with front air bags marked "Front".
- For systems with front and side air bags marked "Side".
CONDITIONS FOR APPLYING THE CHECKS DEFINED IN THIS FAULT FINDING
In this fault finding, each fault is interpreted for a type of special memory (fault present, fault memorised,
fault present or memorised).
The checks defined for the processing of each fault are therefore only applied to a vehicle if the fault is
interpreted for the type of fault declared by the fault finding tool.
If a fault is only interpreted in this fault finding if it is declared "present", applying the fault finding when
the fault is only "memorised" does not enable the origin of memorising this fault to be located. In this
case, only a check of the wiring and the connections for the part at fault needs to be carried out (it is
possible to test the wiring concerned in fault finding mode in order to try to see the change from
memorised fault to fault present).
If a fault is interpreted when it is declared"memorised", the conditions for confirming the actual presence
of the fault (and the need to apply fault finding) appear in the "Notes" section or at the beginning of the
fault interpretation.
Note : the ignition must be switched off before operating the fault finding tool.
TOOLING REQUIRED FOR OPERATIONS ON THE AIR BAG AND SEAT BELT PRETENSIONER SYSTEMS :
- fault finding tool (except XR25).
- XRBAG update N° 4 for front air bags (with the 30 track B40 adaptor with yellow computer base).
- XRBAG update N° 5 for side air bags ( with the new 50 track B50 adapter with orange computer base).
REMINDERS :
When carrying out an operation on the air bag / seat belt pretensioner systems, the computer must be
locked using the fault finding tool to prevent any risk of incorrect triggering (all trigger lines will be
inhibited).This "locked" mode is indicated by illumination of the warning light on the instrument panel.
If the operation follows an impact during which the pretensioners and/or air bags
were triggered, locking will only be possible following a computer unlocking command.
Following an impact during which the pretensioners and/or air bags were triggered, erasing the
memorised faults will only be possible following a computer unlocking command.
Never take measurements on the air bag and pretensioner triggering lines with an apparatus other than
the XRBAG.
Before using a dummy ignition module, ensure that its resistance is between 1.8 and 2.5 ohms.
During an operation ensure that the computer supply voltage does not fall below 10 volts (#01).
FAULT FINDING - INTRODUCTION
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