
IMMOBILISER
Coded key immobiliser system
82
PRO12827
DIAGRAM (vehicle with remote control)
82-15

IMMOBILISER
Coded key immobiliser system
82
KEY
104 Ignition switch
120 Injection computer
123 Door locking button
138 Rear right door locking motor
140 Driver’s door locking motor
141 Passenger’s door locking motor
142 Luggage compartment door locking motor
154 Luggage compartment door switch
178 Rear right door switch
180 Driver’s door switch
181 Passenger’s door switch
213 Courtesy light
225 Diagnostic socket
247 Injection warning light and red immobiliser
warning light on instrument panel
249 Remote control receiver
260 Passenger compartment fuse box
503 Decoder unit
711 Coded solenoid valveFAULT FINDING
If this immobiliser system is faulty, fault finding
may be carried out using the XR25.
CONNECTION
Use cassette no° 17 and the corresponding fault
finding fiche no° 56.
92656S2
Connect the XR25 to the diagnostic socket.
Position the ISO selector on S8.
Enter the code for the immobiliser system D56.
NOTE : For information on the interpretation of
the bargraphs, the fault charts, checking confor-
mity and additional tests, refer to the fault fin-
ding section.
82-16

INSTRUMENT PANEL
Dashboard
83
- the loud speaker grilles,
- the dashboard mountings.
Gently pull the dashboard.
Release the wiring retaining clips.
Disconnect:
- the headlight remote adjustment control
connector and hazard warning light connector,
- the remaining connectors (example : decoder
unit).
Remove the dashboard.REFITTING
When refitting, it is important to ensure the va-
rious wires are correctly routed and have suffi-
cient space so that the dashboard can be correctly
centred.
SPECIAL NOTES FOR REFITTING THE STEERING
WHEEL WITH AIRBAG
Ensure the rotary switch under the steering wheel
is correctly positioned.
If there is any doubt that this switch is correctly
centred follow the method for centring described
in section 88 "driver’s airbag".
Renew the steering wheel bolt each time it is re-
moved (pre-bonded bolt) for a steering wheel
with airbag.
Observe the correct tightening torque (4.5
daN.m).
IMPORTANT
Before reconnecting the driver’s airbag cushion,
check to see if the system is operating correctly as
follows:
•check the airbag warning light on the
instrument panel is illuminated when the
ignition is on,
•connect a dummy ignition module to the
driver’s airbag connector and check that the
warning light extinguishes,
•switch the ignition off, connect the airbag
cushion in place of the dummy ignition module
and secure the cushion to the steering wheel,
•switch the ignition on. Check the warning light
illuminates for three seconds when the ignition
is switched on then extinguishes and remains
extinguished.
If the warning light does not operate exactly as
described above, refer to the fault finding section
and test the system using the XRBAG (Elé. 1288)
(see section 88).
12964R
83-5

WIRING
Remote control for door locking
88
.GENERAL
These vehicles are equipped with an infrared or
radio frequency remote control with rolling code,
which prevents the code from being copied.
When a transmitter is replaced it will therefore be
necessary to resynchronise it so that the transmit-
ters are returned to phase with the decoder unit.
This remote control is only used for locking and
unlocking the opening elements (it has no effect
on the immobiliser).
IMPORTANT: this system cannot operate with
three remote controls (the decoder unit can only
manage two different rolling codes).
THE TRANSMITTER (PLIP)
Replacing or adding a remote control with immo-
biliser function without replacing the decoder
unit.
Order a spare key head using the number in the
head of one of the old keys or the label normally
attached to the keys when the vehicle is delivered
(eight alphanumeric characters).
If a key is being added or has been lost, remember
to order the insert with the key number.
Carry out the special resynchronisation procedure
using the XR25.
This procedure resets the remote control into se-
quence with the decoder unit (rolling code) and
should only be used if the decoder unit is not
being replaced (with immobiliser only).
1.Ignition off, connect the XR25 (ISO selector on
S8, code D56).
For vehicles fitted with an infra-red remote
control, enter command mode G04* (forced
protection mode) then switch the ignition on
again and enter the vehicle’s security code
(see procedure in section 82).
For vehicles fitted with a radio frequency re-
mote control, go to point 2.
2.Switch the ignition off and enter command
mode G32*.
From this moment, the operator has 10 se-
conds to carry out the next operation.
NOTE: The 10 seconds are shown by the illu-
mination of the red immobiliser warning light
and bargraph 17 LH on the XR25
(code D56,
fiche n° 56).
3.Press the remote control twice (the doors lock
and unlock and the red warning light extin-
guishes).
NOTE :
- When replacing a key head, resynchronisa-
tion of the second remote control (if fitted)
is not always necessary.
Check that the second control operates,
otherwise resynchronise it.
- If both remote controls (if fitted) are desyn-
chronised, two resynchronisation proce-
dures will have to be carried out (one for
each remote control).
IMPORTANT: To ensure that the infrared code
is correctly transmitted it is essential to direct
the transmitter correctly towards the receiver.
If the procedure fails it will be necessary to
restart from the beginning (infrared remote
control only).
4.The procedure is complete - check that the
doors lock correctly.
88-3

WIRING
Remote control for door locking
88
Replacing or adding a remote control without im-
mobiliser function without replacing the decoder
unit.
If the vehicle does not have an immobiliser, the re-
mote control does not have a special number. A
key head without a number may therefore be or-
dered.
If a key is being added or has been lost, remember
to order the insert with the key number.
Carry out the special resynchronisation procedure
using the XR25.
This procedure resets the remote control into se-
quence with the decoder unit (rolling code) and
should only be used if the decoder unit is not
being replaced (with immobiliser only).
1.Ignition off, connect the XR25 (ISO selector on
S8, code D56).
2.Enter command mode G32* (the doors lock
and unlock).
From this moment, the operator has 10 se-
conds to carry out the next operation.
NOTE: The 10 seconds are shown by the illu-
mination of bargraph 17 LH on the XR25
(code
D56,
fiche n° 56).
3.Press the remote control twice (the doors lock
and unlock).
NOTE :
- When replacing a key head, resynchronisa-
tion of the second remote control (if fitted)
is not always necessary.
Check that the second control operates,
otherwise resynchronise it.
- If both remote controls (if fitted) are desyn-
chronised, two resynchronisation proce-
dures will have to be carried out (one for
each remote control).
IMPORTANT: To ensure that the infrared code
is correctly transmitted it is essential to direct
the transmitter correctly towards the receiver.
If the procedure fails it will be necessary to
restart from the beginning (infrared remote
control only).
4.The procedure is complete - check that the
doors lock correctly.
Simple resynchronisation procedure
This procedure allows the remote controls to be
reset with the decoder unit (rolling code).
This procedure is used:
- when the remote control code no longer lies
within the reception range of the decoder unit
(over 1,000 consecutive presses on the remote
control, away from the vehicle).
- when replacing a decoder unit alone (new de-
coder unit),
- when replacing a remote control if the decoder
unit is new (replacing a kit).
REMINDER: when replacing or adding a remote
control with immobiliser function without repla-
cing the decoder unit, refer to "Replacing or ad-
ding a remote control with or without immobili-
ser function without replacing the decoder unit"
(specific resynchronisation procedure).
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WIRING
Remote control for door locking
88
Ignition off:
1.Press and hold the central door locking button
for a few seconds until the doors lock and un-
lock.
From this moment, the operator has 10 se-
conds to carry out the next operation.
NOTE: The 10 seconds are shown by the illu-
mination of the red immobiliser warning light
(if fitted) and bargraph 17 LH on the XR25
(code
D56, fiche n° 56).
2.Press the remote control twice (the doors lock
and unlock and the red warning light extin-
guishes, if fitted).
NOTE : If both remote controls (if fitted) are
desynchronised, two resynchronisation proce-
dures will have to be carried out (one for each
remote control).
IMPORTANT: To ensure that the infrared code
is correctly transmitted it is essential to direct
the transmitter correctly towards the receiver.
If the procedure fails it will be necessary to
restart from the beginning (infrared remote
control only).
3.The procedure is complete - check that the
doors lock correctly.
Removal - Refitting
The dashboard must be partially removed to re-
move the decoder unit.
Remove:
- the steering wheel with the wheels straight,
- the half cowlings under the steering wheel,
- the knee protector under the steering column,
- the lights and wiper controls,
- the instrument panel surround,
- the instrument panel,
- the ashtray, its mounting and the two dash-
board mounting bolts on the heating unit,
- the trim at the bottom of the dashboard on the
driver’s side,
- the two speaker grilles on the dashboard,
- the dashboard mountings.
THE DECODER UNIT
The decoder unit is located in the left hand side of
the dashboard (A).
12967R
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WIRING
Remote control for door locking
88
REMOTE CONTROL RECEIVER
This is located near to the courtesy light.
It receives the remote control code and transmits
it to the decoder unit. Its function is to amplify the
signal.
The remote control receiver is replaced indepen-
dently of the transmitter and the decoder unit (it
is not coded).
Removal - Refitting
Remove:
- the light diffuser, lifting it with a small screw-
driver at points (A),
13073R
13065R
Replacement
For vehicles fitted with an immobiliser, refer to
section 82 (programming procedure). The decoder
unit is common to the immobiliser.
For vehicles without an immobiliser, carry out a
resynchronisation operation.
NOTE : Fault finding for the remote control sys-
tem may be carried out using the XR25 (fault fin-
ding fiche n° 56).
Move the dashboard as far back as possible, dis-
connect the decoder unit and remove the two
mounting bolts (B) using a small ratchet fitted
with a Torx 20 socket.
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WIRING
Remote control for door locking
88
Remove the receiver and its printed circuit by se-
parating tabs (F) (example: infrared receiver).
13075R
Special notes for refitting
When refitting the mounting (D), check that the
switch (E) is positioned towards the right (see dia-
gram) to avoid damaging the contacts on reclip-
ping the assembly.
13074R2
13072R
- the two courtesy light console mounting bolts
(B).
Release the assembly forwards and disconnect the
connector.
After removing the bulb, remove bolt (C) and un-
clip mounting (D).
13074R1
88-7