1999 RENAULT CLIO air condition

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AFTER REPAIR
Air bag fault warning light circuit
CC.1 : Short circuit to 12 volts
CO.0 : Open circuit or short circuit to earth
DF010
present
NOTESUse the XRBAG 30 track B40 adaptor for operations on the computer connector.
NoneNOTES CC.1
Ignition on, warning light extinguished
Lock the computer using the command on the fault finding tool.
Check the condition of the warning light bulb.
Ensure the insulation in relation to 12 volts of the connection between the warning light and track 7 of
the 30 track connector.
NoneNOTES CO.0
Lock the computer using the command on the fault finding tool.
Check the condition of the warning light bulb.
Ensure the continuity of the connection between the warning light and track 7 of the 30 track connector.
Ensure the presence of 12 volts on the warning light.
If the checks carried out have not enabled a fault to be found, disconnect the computer connector and fit
the XRBAG 30 track B40 adaptor.Use the XRBAG in its instrument panel warning light test mode with
grey adaptor cable 1 .
If the warning light can be illuminated by the XRBAG, replace the air bag computer (refer to the "Aid"
section for this operation ).
If the warning light can not be illuminated, repeat the checks described above.
Ignition on, warning light illuminated
Lock the computer using the command on the fault finding tool.
Disconnect the sir bag computer and check on the air bag computer base for the 5 shunt opening pins
for the connector. Ensure the insulation in relation to earth of the connection between the warning light
and track 7 of the 30 track connector.
Erase the computer memory and switch off the ignition.
Carry out a check using the fault finding tool and, in the absence of a fault,
unlock the computer.
FAULT FINDING- INTERPRETATION OF FAULTS
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-37

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Reconnect the computer and the pretensioner ignition module , switch the ignition on
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
pretensioners if there has been a replacement (tool Elé. 1287).
AFTER REPAIR
Driver’s pretensioner circuit
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to 12 volts
CC.0 : Short circuit to earthDF029
present
NOTESNever carry out measures on the triggering lines with equipment other than the
XRBAG.
NoneNOTES CO - CC
Lock the computer using the command on the fault finding tool.
Switch off the ignition and check the ignition module for the driver’s pretensioner is correctly connected.
Disconnect the ignition module for the driver’s pretensioner 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.
Change the driver’s pretensioner if the fault has been memorised (fault no longer declared present).
Disconnect the computer connector and fit the 30 track B40 adaptor.
The XRBAG must be used to measure resistance on adaptor cable D. If the value obtained is not correct,
check the connections on the 30 track connector (tracks 1 and 2) 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 5 shunt opening pins for the 30 track connector.
Check the condition of the computer connections.
Check the condition of the 30 track connector (locking system, ...).
The XRBAG must be used to measure resistance at point C1 (seat connector) on the driver’s pretensioner
line.
If the value obtained is not correct, replace the wiring between points C1 and C3 (seat wiring).
FAULT FINDING- INTERPRETATION OF FAULTS
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-38

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AFTER REPAIR
NoneNOTES CC.1 - CC.0
DF029
present
CONT
Reconnect the computer and the driver’s pretensioner ignition module , switch the ignition
on 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
pretensioners if there has
been a replacement (tool Elé. 1287).
Lock the computer using the command on the fault finding tool.
Disconnect the ignition module for the driver’s pretensioner 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.
If the fault is memorised (fault no longer declared present), check the condition of the seat wiring.
Replace the driver’s pretensioner if the wiring is not faulty.
Disconnect the computer connector and fit the 30 track B40 adaptor.
The XRBAG must be used for insulation measurements appropriate to the type of fault on adaptor cable
D . If the value obtained is not correct, check the connections on the 30 track connector (tracks 1 and 2)
and replace the wiring if necessary
If the checks carried out do not indicate the presence of a fault on the driver’s pretensioner circuit, check
on the air bag computer base for the 5 shunt opening pins for the 30 track adaptor.
Check the condition of the computer connections.
Check the condition of the 30 track connector (locking system, ...).
The XRBAG must be used for insulation measurements appropriate to the type of fault on point C1 (seat
connector) on the driver’s pretensioner line.
If the value is not correct, replace the wiring betweenpoints C1 and C3 (seat wiring).
FAULT FINDING- INTERPRETATION OF FAULTS
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-39

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AFTER REPAIR
Reconnect the computer and the pretensioner ignition module , switch the ignition on
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
pretensioners if there
has been a replacement (tool Elé. 1287).
Passenger’s pretensioner circuit
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to 12 volts
CC.0 : Short circuit to earthDF030
present
NOTESNever carry out measures on the triggering lines with equipment other than the
XRBAG.
NoneNOTES CO - CC
Lock the computer using the command on the fault finding tool.
Switch off the ignition and check that the passenger’s pretensioner ignition module is connected
correctly.
Disconnect the ignition module for the passenger’s pretensioner 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 passenger’s pretensioner if the fault is memorised (no longer declared as present).
If the checks carried out do not indicate the presence of a fault, check on the air bag computer base for
the 5 shunt opening pins for the 30 track adaptor.
Check the condition of the computer connections.
Check the condition of the 30 track connector (locking system, ...).
The XRBAG must be used to measure resistance on point C1 (seat connector) of the passenger’s
pretensioner line.
If the value is not correct, replace the wiring betweenpoints C1 and C3 (seat wiring).
FAULT FINDING- INTERPRETATION OF FAULTS
WIRING
Air bags and seat belt pretensioners
88
FRONT
Disconnect the computer connector and fit the 30 track B40 adaptor.
The XRBAG must be used for resistance measurements onadaptor cable C . If the value is not correct,
check the connections on the 30 track connector (tracks 3 and 4) and replace the wiring if necessary
88-40

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AFTER REPAIR
NoneNOTES CC.1 - CC.0
DF030
present
CONT
Lock the computer using the command on the fault finding tool.
Disconnect the ignition module for the passenger’s pretensioner 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.
If the fault is memorised (no longer declared as present), check the condition of the seat wiring.
Replace the passenger’s pretensioner if the wiring is not faulty.
Disconnect the computer connector and fit the 30 track B40 adaptor.
The XRBAG must be used for insulation measurements appropriate to the type of fault on adaptor cable
C . If the value is not correct, check the connections on the 30 track connector (tracks 3 and 4) and replace
the wiring if necessary
If the checks carried out do not indicate the presence of a fault on the passenger’s pretensioner circuit,
check on the air bag computer base for the 5 shunt opening pins for the 30 track adaptor.
Check the condition of the computer connections.
Check the condition of the 30 track connector (locking system, ...).
The XRBAG must be used for insulation measurements appropriate to the type of fault on point C1 (seat
connector) on the passenger’s pretensioner line.
If the value is not correct, replace the wiring betweenpoints C1 and C3 (seat wiring).
Reconnect the computer and the pretensioner ignition module, switch the ignition on
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
pretensioner if there has been a replacement (tool Elé. 1287).
FAULT FINDING- INTERPRETATION OF FAULTS
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-41

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AFTER REPAIR
Computer locked
DF034
present
None.NOTES
This fault enables the locked condition of the computer to be seen.
When it is present, all trigger lines are inhibited, which prevents triggering of the air bags and seat belt
pretensioners.
This fault is normally present in two circumstances :
- The computer is new (it is sold locked).
- The computer locking command on the fault finding tool has been used during an operation on the
vehicle.
Erase the computer memory and switch off the ignition.
Carry out a check using the fault finding tool and, in the absence of a fault,
unlock the computer.
FAULT FINDING- INTERPRETATION OF FAULTS
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-42

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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
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-50

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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
WIRING
Air bags and seat belt pretensioners
88
SIDE
88-53