Page 35 of 90

Downloaded from www.Manualslib.com manuals search engine 1AB8651.0
Reconnect the computer and the air bag cushion ignition module, then switch on
the ignition. Erase the computer memory, then switch off the ignition. Carry out a
check again 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
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to 12 volts
CC.0 : Short circuit to earthDF003
present
NOTESNever carry out measurements 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 remove the 2 steering wheel boss mounting bolts.
Check that it is connected correctly.
Disconnect the steering wheel boss and attach 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 cushion 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 30
track B40 adaptor.
The XRBAG must be used to measure resistance on adaptor cable A .
If the value obtained is not correct,
check the connections on the 30 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 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, ...).
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
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-33
Page 36 of 90

Downloaded from www.Manualslib.com manuals search engine 1AB8651.0
Reconnect the computer and the air bag cushion ignition module, then switch on the
ignition. Erase the computer memory, then switch off the ignition. Carry out a check again
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 command on the fault finding tool.
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 30
track B40 adaptor.
The XRBAG must be used for insulation measurement appropriate to the type of fault on adaptor cable
A .
If the value obtained is not correct, check the connections on the 30 track connector (tracks 10 and 11)
and replace the wiring if necessary
FAULT FINDING- INTERPRETATION OF FAULTS
WIRING
Air bags and seat belt pretensioners
88
FRONT
88-34
Page 56 of 90

Downloaded from www.Manualslib.com manuals search engine 1AB8651.0
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
WIRING
Air bags and seat belt pretensionersSIDE
88
88-54
Page 57 of 90

Downloaded from www.Manualslib.com manuals search engine 1AB8651.0
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
WIRING
Air bags and seat belt pretensionersSIDE
88
88-55