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v0406.0
IMMOBILISER
Fault finding - Checking conformity
82
If a fault bargraph illuminates, refer to the corresponding fault chart.NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes
5Configuration of the
computer -
petrol/dieselIlluminated if configured for a
diesel vehicle.
Extinguished if configured for
a petrol vehicle.
Command :
-G22*1* configuration for
petrol.
-G22*2* configuration
for diesel.
6 Forced protection
modeIlluminated only after entering
command G04* on the XR25.
Vehicle cannot be started as
long as
BG 9LH is illuminated.
7Immobiliser statusIlluminated if immobiliser
active : switch off the ignition
and wait approximately 10
seconds for the
BG 10LH to
illuminate.
Extinguished if immobiliser
inactive.
8Presence of the keyIlluminated when the ignition
is switched on if the key is
coded
(on condition that the vehicle
was protected before the
ignition was switched on,
immobiliser warning light
flashing).
NOTE : in normal operation,
bargraphs
8RH, 9 RH and 10 RH should be
illuminated together.
3
9
10
8
82-35
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v0406.0
IMMOBILISER
Fault finding - Checking conformity
82
If a fault bargraph illuminates, refer to the corresponding fault chart.NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes
9Reception of the key
codeIlluminated when the ignition
is switched on
if the key is coded and has the
correct format (on condition
that the vehicle was protected
before the ignition was
switched on, immobiliser
warning light flashing).
NOTE : In normal operation ,
bargraphs
8RH , 9RH and 10RH should be
illuminated together.
10 Valid key code Illuminated when the ignition
is turned on if the key is coded
and has the correct format and
code (on condition that the
vehicle was protected before
the ignition was turned on,
immobiliser warning light
flashing).
NOTE: In normal operation
bargraphs 8RH, 9RH and 10RH
should be illuminated
together.
11Reception of the
infrared signal from
the PLIP Illuminated for approximately
3 seconds if the infrared signal
is received by the decoder unit
via the infrared transmitter.
Illuminated for approximately
3 seconds if the infrared signal
received by the decoder unit
via the infrared transmitter is
the correct signal.
9
10
11
11
82-36
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v0406.0
IMMOBILISER
Fault finding - Aid
82
ADDITIONAL CHECKS
COMMAND MODES G--*
To use this function, enter G on the XR25 , then the number of the command followed by a star.
03Courtesy light control (Illuminates the courtesy light for 3 seconds).
04Forced protection mode : activates the immobiliser function even if the key is correct, which allows
starting prevention to be checked. Bargraph 9 left should illuminate.
This command must be entered when the ignition is off and the immobiliser function is active.
IMPORTANT: switching the ignition off cancels this command.
05Immobiliser warning light command (illuminates immobiliser warning light for 3 seconds ).
08Door unlock command (activates micromotors on unlock side for 3 seconds ).
09Door lock command (activates micromotors on lock side for 3 seconds ) .
13End of fault finding.
22Configuration :
-G 22 * 1 * = configuration for petrol vehicles (Bargraph 3RH should be extinguished).
-G 22 * 2 * = configuration for diesel vehicles (Bargraph 3RH should be illuminated).
23Forced solenoid valve test mode (used only on diesel vehicles).
Activates coded solenoid valve (opening/closing) for approximately 30 seconds (listen).
Note: - the decoder unit must be configured for a diesel vehicle
- Bargraph 8 left should be illuminated during the test.
32Programming of second PLIP key.
39Transponder line.
82-39
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v0406.0
IMMOBILISER
Fault finding - Aid
82
ADDITIONAL CHECKS
COMMAND MODES G--*
40Entering the security code (Bargraph 10 left should be illuminated and the ignition turned on).
This command mode can be used to enter the security code but does not permit decoding of the
injection computer or of the coded solenoid valve.
Enter the number of the vehicle’s security code on the XR25 and validate with "*".
If the code number is correct, "bon" is displayed on the XR25 and bargraph 10 left extinguishes.
If the code number is incorrect, "Fin" is displayed on the XR25 and bargraph 10 left remains
illuminated.
IMPORTANT: 3 attempts may be made to enter the code. If, after the 3rd attempt, the code
remains invalid,you must wait for approximately 15 minutes before trying again (the ignition must
be switched on and off again between each attempt.)
47Configuration of courtesy light timer :
-G 47 * 0 * = cancels courtesy light timer.
-G 47 * 1 * = activates courtesy light timer.
70Reading the Part Number (Part number of the decoder unit).
LIST OF THE VARIOUS #
43Type of button for electric door locks.
26Source of the last command for the opening elements:
1→Infrared remote control
2→Central door locking button
27Operation of the last command for the opening elements :
1→Unlock
2→Lock
65Test E2 Prom.
95Manufacturer (1 = Valéo, 2 = Sagem).
82-40
Page 340 of 363

1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding -Introduction
CONDITIONS FOR THE APPLICATION OF THE CHECKS DEFINED IN THIS FAULT FINDING
The checks defined in this fault finding should only be applied to a vehicle when the fault bargraph is
illuminated, indicating that the fault is present on the vehicle at the time of checking. Only a computer
fault will require replacement of the computer, whether the bargraph is permanently illuminated or
flashing .
If the fault is not present but simply memorised, the bargraph flashes and application of the checks
recommended in the fault finding section will not allow the origin of the fault to be found. In this case,
only a check of the wiring and the connection of the component in question must be carried out (it is
possible to test the wiring concerned in fault finding mode to try to obtain permanent illumination of the
bargraph ).
TOOLING REQUIRED FOR OPERATIONS ON THE AIRBAG AND SEAT BELT PRETENSIONER SYSTEMS :
- XR25 (with minimum XR25 cassette N° 16).
- XRBAG the updated N° 3 version (with the new measuring lead and its adaptors as well as the 30 track
adaptor for operations on the computer connector).
REMINDER:
When carrying out an operation on the airbag/seat belt pretensioner systems , it is essential to lock the
computer with the XR25 command G80* to avoid all risk of triggering at the wrong time (all firing lines
will be inhibited). This operating mode will be indicated by illumination of the warning light on the
instrument panel.
Never carry out any measuring operations on the airbag and pretensioners trigger lines with equipment
other than the XRBAG.
Before using a dummy ignition module, ensure that its resistance is between 1.8 and 2.5 ohms.
Only 30 track connector computers with airbag(s) function are able to be tested with the XR25.
Computers with the pretensioner function only must be checked with the XRBAG by following the checks
described in the fault finding section.
The ignition must be switched off, then on again to make the warning light extinguish following erasure
of the memory using the command G0**.
88
88-1
Page 342 of 363
1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding -Wiring
Fault finding - XRBAG Fiche
Pretensioner and driver airbag
88
DI8812.3
Correct insulation value : display≥ 100 h or 9999 flashing
PRETENSIONERS
Measuring point Correct value
C0, C1 and C3 1.6 to 4.6 Ω
AIRBAG
Measuring point Correct value
C0, C2 and C4 2 to 9.4 Ω
CT Rotary switch
A1 +12 Volts
A3 Earth
A2 Warning light
B1
B2Diagnostic socket A Central unit
B Driver seat
C Passenger seat
D Pretensioners
E Driver’s airbag ignition module
88-3
Page 343 of 363
1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding -Wiring
Fault finding - XRBAG Fiche
Pretensioner , driver’s airbag and passenger’s airbag
88
DI8813.2
PRETENSIONERS
Measuring point Correct value
C0, C1 and C3 1.6 to 4.6 Ω
AIRBAG
Measuring point Correct value
Driver C0, C2 and C4 2 to 9.4 Ω
Passenger C0 and C4 1.6 to 4.6 Ω
CT Rotary switch
A1 +12 Volts
A3 Earth
A2 Warning light
B1
B2Diagnostic socket A Central unit
B Driver’s seat
C Passenger’s seat
D Pretensioners
E Driver’s airbag ignition module
G Passenger’s airbag ignition module
Correct insulation value : display≥ 100 h or 9999 flashing
88-4
Page 356 of 363
1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of XR25 bargraphs
Bargraph 10 left hand side illuminated Fiche n° 49
Short circuit or insulation from 12 volts on the warning light line 10
Use the 30 track XRBAG adaptor to operate on the computer connector .NOTES
If the checks carried out have not proven the existence of a fault, replace the airbag computer (consult
the section "Aid" for this operation).
Lock the computer using command G80* on the XR25.
Check the condition of the warning light bulb .
Ensure insulation
from 12 volts of the connection between the warning light and track 8 of the 30 track
connector.
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*.AFTER REPAIR
88
88-17