1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of XR25 bargraphs
Bargraph 5 left hand side illuminated Fiche n° 49
Resistance on the driver’s airbag line
XR25 aid :*05 : CC : Short-circuit
CO : Open circuit
5
Never carry out measurements on the trigger lines with equipment other than the
XRBAG.NOTES
Lock the computer with the command G80* on the XR25.
Switch off the ignition and remove the two mounting bolts of the steering wheel cushion.
Check that it is correctly connected.
Disconnect the steering wheel cushion and connect a dummy ignition module to the ignition module
connector . Switch on the ignition and carry out an XR25 check.
Replace the airbag cushion if the fault has been memorised (fault no longer declared).
The XRBAG tool MUST be used for checking resistance at point C2 of the driver’s airbag circuit.
If the value obtained is not correct, replace the rotary switch below the steering wheel.
Reconnect the rotary switch below the steering wheel, disconnect the computer connector and fit the 30
track adaptor.
The XRBAG tool MUST be used for checking resistance on the wire marked B on the adaptor.
If the value obtained is not correct,
check the 30 track connector connection (tracks 10 and 11) and
replace the wiring if necessary.
If the checks carried out have not proven the existence of a fault, replace the airbag computer (consult
the section "Aid" for this operation).
Reconnect the driver’s airbag ignition module and remount the steering wheel cushion.
With the ignition switched off, disconnect, then reconnect the connector for the rotary switch below the
steering wheel.
Operate on the connection if bargraph 5 left hand side begins to flash .
Erase the computer memory using the command G0** then switch off the ignition.
carry out another check with the XR25 and, if there is no fault, unlock the
computer using command G81*.
Destroy the airbag cushion if it has been replaced (tool Elé. 1287).
AFTER REPAIR
88
88-10
1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of XR25 bargraphs
Bargraph 5 right hand side illuminated Fiche n° 49
Insulation of driver’s airbag line
XR25 aid :*25 : CC.1 : Short circuit at 12 volts
CC.0 : Short circuit to earth
5
Never carry out measurements on the trigger lines with equipment other than the
XRBAG.NOTES
Lock the computer using command G80* on the XR25.
Switch off the ignition and remove the two mounting bolts of the steering wheel cushion .
Check the condition of the trigger wire.
The XRBAG tool MUST be use for measuring insulation appropriate to the type of fault at point C2 of the
driver’s airbag 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 adaptor.
The XRBAG tool MUST be used for measuring insulation appropriate to the type of fault on the wire
marked B on the adaptor.
If the value obtained is not correct , check the 30 track connector connection (tracks 10 and 11) and
replace the wiring if necessary.
If the checks carried out have not proven the existence of a fault, replace the airbag computer (consult
the section "Aid" for this operation).
Reconnect the driver’s airbag ignition module and remount the steering wheel cushion.
Erase the computer memory using the command G0** then switch off the ignition.
Carry out another XR25 check and if there is no fault, unlock the computer using
command G81*.
Destroy the airbag cushion if it has been replaced (tool Elé. 1287).
AFTER REPAIR
88
88-11
