RENAULT CLIO 1999 X65 / 2.G Air Bag And Seat Belts Repair Manual

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CHANGING THE AIR BAG COMPUTER
Air bag computers are sold locked to prevent any risk of incorrect triggering (all trigger lines are
inhibited). This "locked" mode is indicated by illumination of the warning light on the instrument panel.
When changing an air bag computer, follow the instructions below:
- Ensure that the ignition is switched off.
- Change the computer.
- Carry out a check using the fault finding tool.
- If necessary change the computer configuration using the "computer configuration" command
- Unlock the computer, only in the absence of a fault declared by the fault finding tool.
FAULT FINDING- AID
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Chart 1NO DIALOGUE WITH THE AIR BAG COMPUTER
NoneNOTES
Ensure that the fault finding tool is not the cause of the fault by trying to communicate with a computer
on another vehicle . If the tool is not at fault and dialogue can be established with another computer on
the same vehicle, it may be that a faulty computer has disrupted the fault finding linesK and L.
Proceed using successive disconnections in order to locate this computer.
Check the battery voltage and carry out the necessary operations to obtain the correct voltage (10.5 volts
< U battery > 16 volts).
When communication is established, deal with any faults which may be declared.
Check the presence and condition of the air bag computer supply fuse.
Check the computer connector connection and the condition of its connections.
Check the the computer is correctly supplied :
- Disconnect the air bag computer and fit the XRBAG 30 track B40 adaptor .
- Check and ensure the presence of the +After Ignition Feed between the terminals marked earth and
+After Ignition Feed .
Check that the diagnostic socket is supplied correctly :
-+Before Ignition Feed ontrack 16.
-Earth on track 5.
Check the continuity and insulation of the diagnostic socket / air bag computer connection lines:
- Between the terminal marked L and track 15 of the diagnostic socket.
- Between the terminal marked K and track 7 of the diagnostic socket .
If dialogue is still not established after carrying out these different checks, replace the air bag computer
(refer to "Aid" section for this operation).
AFTER REPAIR
FAULT FINDING- FAULT CHARTS
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FAULT FINDING - INTRODUCTION
FICHE XRBAG
Pretensioners, front and side air bags
DI8827
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SIDE
The connection is identical for the pretensioners and side air bags on both seats.
Correct insulation value: display≥ 100.h or 9999 flashing.CT Rotary switch
A1+12 Volts
A2 Warning light
A3 Earth
B1
B2 A Central computer
BDriver’s seat
CPassenger’s seat
DPretensioner
E Driver’s air bag ignition module
G Passenger’s air bag ignition module
H Side air bag ignition module
Diagnostic lines
FRONT AIR BAGS
Measuring point Correct value
C0, C2 and C42.1 to 7 ohms
C0 and C41.3 to 4.5 ohms
Driver
Passenger
SIDE AIR BAGS AND PRETENSIONERS
Measuring point Correct value
C0, C1 and C31.3 to 4.5 ohms
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AFTER REPAIR
ComputerDF001
present
or
memorised
NoneNOTES
Change the air bag computer (refer to the "Aid" section for this operation).
None
FAULT FINDING - INTERPRETATION OF FAULTS
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AFTER REPAIR
Computer supply voltage
1.dEF : Too many micro-cuts
2.dEF : Feed voltage too low
3.dEF : Feed voltage too highDF002
present
NOTES
Erase the computer memory.
For a micro-cut fault, check the computer supply lines :
- condition of the connections on the computer,
- the condition of the computer earths (tracks 6 and 30 on the 50 track connector to the front right pillar
earth).
- condition/ position of the fuse,
- condition and tightness of the battery terminals.
NoneNOTES 1.dEF
Carry out the operations necessary to obtain the correct supply voltage for the computer :
9 volts ± 0.1 < correct voltage < 18 volts ± 0.1.
- Check the battery charge.
- Check the charging circuit.
- Check the tightness and condition of the battery terminals.
- Check the computer earth.
NoneNOTES 2.dEF - 3.dEF
Use the B50 XRBAG adaptor for operations on the computer connector.
FAULT FINDING - INTERPRETATION OF FAULTS
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Reconnect the computer and the air bag cushion ignition module, then switch on the
ignition again. Erase the computer memory, then switch off the ignition. Carry out a check
using the fault finding tool and, in the absence of a fault , unlock the computer. Destroy
the air bag if there has been a replacement (tool ELE 1287).
AFTER REPAIR
Driver’s front air bag circuit
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to 12 volts
CC.0 : Short circuit to earthDF003
present
NOTESNever carry out measuring operations on the trigger lines with equipment other
than the XRBAG.
NoneNOTES CO - CC
Lock the computer using the fault finding tool command.
Switch off the ignition and remove the two steering wheel boss mounting bolts.
Check that it is correctly connected.
Disconnect the steering wheel boss and connect a dummy ignition module to the ignition module
connector.
Switch on the ignition and carry out a check using the fault finding tool.
Replace the air bag if the fault has been memorised (fault no longer declared present).
The XRBAG must be used to measure resistance at point C2 of the driver’s air bag circuit.
If the value obtained is not correct, replace the rotary switch under the steering wheel.
Reconnect the rotary switch under the steering wheel, disconnect the computer connector and fit the 50
track B50 adaptor.
The XRBAG must be used to measure resistance on adaptor cable C .
If the value obtained is not correct,
check the connections on the 50 track connector (tracks 10 and 11)
and replace the wiring if necessary.
If there is no evidence of a fault after these checks have been carried out, check on the air bag computer
base for the 7 shunt opening pins for the 50 track connector.
Check the condition of the computer connections
Check the condition of the 50 track connector (locking system).
With the ignition switched off, disconnect then reconnect the rotary switch connector under the steering
wheel.
Repair the connections if the fault has just been memorised (fault no longer declared present)
FAULT FINDING - INTERPRETATION OF FAULTS
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Reconnect the computer and the air bag ignition module, then switch on the
ignition again. Erase the computer memory, then switch off the ignition. Carry
out a check using the fault finding tool and, in the absence of a fault , unlock the
computer. Destroy the air bag if there has been a replacement (tool ELE 1287).
AFTER REPAIR
DF003
present
CONT
NoneNOTES CC.1 - CC.0
Lock the computer using the fault finding tool command.
Switch off the ignition and remove the two steering wheel boss mounting bolts.
Check the condition of the trigger cable.
The XRBAG must be used for insulation measurement appropriate to the type of fault at point C2 of the
driver’s front air bag circuit.
If the value obtained is not correct, replace the rotary switch under the steering wheel.
Reconnect the rotary switch under the steering wheel, disconnect the computer connector and fit the 50
track B50 adaptor.
The XRBAG must be used to measure insulation appropriate to the type of fault onadaptor cable C .
If the value obtained is not correct, check the connections on the 50 track connector (tracks 10 and 11)
and replace the wiring if necessary
FAULT FINDING - INTERPRETATION OF FAULTS
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1AB8651.0
Reconnect the computer and the passenger air bag ignition module, then switch on the
ignition.Erase the computer memory then switch off the ignition.Carry out a check using
the fault finding tool and, in the absence of a fault, unlock the computer Destroy the
passenger air bag module if there has been a replacement (tool Elé. 1287).
Passenger’s front air bag circuit
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to 12 volts
CC.0 : Short circuit to earthDF004
present
NOTESNever carry out measuring operations on the trigger lines with equipment other
than the XRBAG.
NoneNOTES CO - CC
Lock the computer using the fault finding tool command.
Switch off the ignition, disconnect the computer connector and fit the 50 track B50 adaptor.
The XRBAG must be used to measure resistance on adaptor cable D .
Is the value obtained correct?
If the value obtained is correct at adaptor cable D check on the air bag computer base
for the 7 shunt opening pins for the 50 track connector.
Check the condition of the computer connections
Check the condition of the 50 track connector (locking system, connections,...).YES
If the value obtained is not correct at adaptor cable D check the connections on the 50
track connector (tracks 13 and 14).NO
If the value remains incorrect, switch off the ignition and remove the dashboard visor
to access the passenger air bag module wiring . Disconnect the passenger air bag
ignition module, connect a dummy ignition module to the ignition module connector,
then use the XRBAG to measure the resistance on adaptor cable D .
If the value obtained is correct, change the passenger air bag module.
If the value obtained is still incorrect, replace the air bag wiring.
FAULT FINDING - INTERPRETATION OF FAULTS
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NoneNOTES CC.1 - CC.0
Lock the computer using the fault finding tool command.
Switch off the ignition, disconnect the computer connector and fit the 50 track B50 adaptor.
The XRBAG must be used to measure insulation appropriate to the type of fault declared by the fault
finding tool on adaptor cable D .
Is the value obtained correct?
Check the condition of the connections on the 50 track computer connector (tracks 13
and 14).YES
Check the condition of the connections on the 50 track computer connector (tracks 13
and 14).NO
If the value remains incorrect, replace the air bag wiring.
DF004
present
CONT
AFTER REPAIR
Reconnect the computer and the passenger air bag ignition module, then switch
on the ignition.Erase the computer memory then switch off the ignition.Carry out
a check using the fault finding tool and, in the absence of a fault, unlock the
computer . Destroy the passenger air bag module if there has been a replacement
(tool Elé. 1287).
FAULT FINDING - INTERPRETATION OF FAULTS
WIRING
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1AB8651.0
Reconnect the computer and the driver’s side air bag ignition module, then switch
on the ignition. Erase the computer memory then switch off the ignition.Carry
out a check using the fault finding tool and, in the absence of a fault, unlock the
computer . Destroy the side air bag module if there has been a replacement (tool
Elé. 1287).
Driver’s side air bag circuit
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to 12 volts
CC.0 : Short circuit to earthDF008
present
NOTESNever carry out measuring operations on the trigger lines with equipment other
than the XRBAG.
NoneNOTES CO - CC
Lock the computer using the fault finding tool command.
The XRBAG must be used for resistance measurements appropriate to the type of fault at point C1 (seat
connector) on the driver’s side air bag module line.
Is the value obtained correct?
Disconnect the computer connector and fit the 50 track B50 adaptor.
The XRBAG must be used to measure resistance on adaptor cable E
If the value obtained is not correct, check the connections on the 50 track connector
(16 and 17) and replace the wiring if necessary
If the value obtained is correct at adaptor cable E, check on the air bag computer base
for the 7 shunt opening pins for the 50 track connector.
Check the condition of the computer connections
Check the condition of the 50 track connector (locking system, connector,...).
YES
Check the connections on the seat connector.
Strip the driver’s seat and check that the side air bag ignition module is connected
correctly .NO
Disconnect the driver’s side air bag ignition module, connect a dummy ignition
module to the ignition module connector and measure the resistance with the XRBAG
onpoint C1 again.
If the value obtained is correct, replace the driver’s side air bag module.
If the value obtained is still incorrect, replace the wiring between points C1 and C3
(seat wiring).
Check the connections on the seat connector (point C1).
Visually check the seat wiring. Reconnect point C1.
FAULT FINDING - INTERPRETATION OF FAULTS
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