Manual xsara-and-xsara-picasso-bsi-operating-principles

CITROËN
TECHNICAL
TRAINING
MULTIPLEXED BSI
OPERATING PRINCIPLE
FOR THE
XSARA PICASSO AND XSARA
CITROËN UK LTD
221 BATH ROAD
SLOUGH SL1 4BA
_________________
DEALER PERSONNEL
DEVELOPMENT AND
TRAINING
_________________
© CITROËN UK LTD. Reproduction whether partial or in full without
written permission from Citroën UK Ltd is forbidden

DOCUMENT SUMMARY
MULTIPLEXED BSI OPERATING PRINCIPLE
for the
XSARA PICASSO AND XSARA
The aim of this document is to explain certain functions of the BSI (Built-in Systems
Interface).
After presenting multiplexing, the following subjects will be dealt with:
Electrical functions of the XSARA and XSARA PICASSO.
− Signalling.
− Interior lighting.
− Driver's information.
− Visibility.
− Locking and unlocking.
− Automatic climate control.
− Immobilisation.
− Radio system.
MULTIPLEXED BSI - XSARA PICASSO AND XSARA – PART 1
© AUTOMOBILES CITROËN Toute reproduction ou traduction même partielle sans l'autorisation écrite d'AUTOMOBILES CITROËN est interdite et constitue une contrefaçon
A

CONTENTS
PART 1 1
MULTIPLEXING / BSI
XSARA AND XSARA PICASSO.................................................1
MULTIPLEXING...........................................................................1
I - BRIEF DEFINITION............................................................................... ..1
II - PURPOSE OF MULTIPLEXING............................................... ..............1
III - DESIGN OF THE XSARA PICASSO AND XSARA MULTIPLEXED NETWORK 2
IV - THE VAN PROTOCOL................................................................. .........3
V - LOCATION OF MULTIPLEXED ECUS.................................................. .5
BUILT-IN SYSTEMS INTERFACE...............................................7
I - FUNCTIONS CONTROLLED BY THE BSI ON THE XSARA PICASSO AND THE
XSARA............................................................................... .........................8
II - BSI LAYOUTS ON THE XSARA PICASSO AND XSARA.......................9
III - BSI INPUTS................................................................................. ........11
IV - BSI OUTPUTS.................................................................. ..................13
V - LOCATION AND TYPE OF THE CONNECTORS ON THE BSI...........16
VI - CHANNEL ALLOCATION ON THE BSI...............................................17
VII - OPERATING MODES....................................................... .................23
VIII - AFTER-SALES OPERATIONS, ACCESSORIES..............................24
ELECTRICITY 29
I - LAYOUT DIAGRAM......................................................................... ......29
II - PARTS LIST.................................................................... .....................30
PART 2 33
SIGNALLING
XSARA AND XSARA PICASSO...............................................33
GENERAL 33
I - FOREWORD........................................................................ .................33
II - GENERAL LAYOUT.................................................... .........................33
OPERATING PRINCIPLE..........................................................35
B

I - INDICATOR FUNCTION...................................................................... ..35
II - HAZARD WARNING LAMPS FUNCTION............................................35
III - FAULTY BULB DETECTION FUNCTION............................................36
ELECTRICITY 37
I - LAYOUT DIAGRAM......................................................................... ......37
II - PARTS LIST.................................................................... .....................38
PART 3 41
INTERIOR LIGHTING
XSARA AND XSARA PICASSO ..............................................41
GENERAL 41
I - FOREWORD........................................................................ .................41
II - GENERAL LAYOUT.................................................... .........................43
OPERATING PRINCIPLE..........................................................45
ELECTRICITY 47
I - LAYOUT DIAGRAM......................................................................... ......47
II - PARTS LIST.................................................................... .....................48
PART 4 51
DRIVER'S INFORMATION
XSARA PICASSO......................................................................51
GENERAL 53
I - FOREWORD........................................................................ .................53
II - LAYOUT........................................................................ .......................54
III - XSARA PICASSO CONTROL PANEL.................................................61
MESSAGES AND WARNINGS FUNCTION..............................66
I - DISPLAY............................................................................................... .66
II - PRIORITY LEVELS.............................................................. ................66
III - WARNINGS FROM WIRE INFORMATION ........................................67
IV - WARNINGS FROM THE VAN FRAMES.............................................68
INSTRUMENTATION FUNCTION.............................................70
I - COOLANT TEMPERATURE GAUGE AND WARNING FUNCTION......70
II - FUEL LEVEL GAUGE FUNCTION.......................................................75
III - SPEEDOMETER FUNCTION............................................................. .78
C

IV - MILEOMETER FUNCTION...................................................... ...........80
V - MAINTENANCE INDICATOR FUNCTION...........................................81
VI - CLOCK / DATE / TEMPERATURE FUNCTION..................................85
LIGHTING FUNCTION..............................................................88
I - RHEOSTAT FUNCTION......................................................... ...............88
II - NIGHT DRIVING FUNCTION................................................. ..............89
ON-BOARD ECU FUNCTION...................................................92
I - GENERAL....................................................................... ......................92
II - LAYOUT........................................................................ .......................93
III - OPERATING MODES.......................................................................... 94
ELECTRICITY 96
I - LAYOUT DIAGRAM......................................................................... ......96
II - PARTS LIST.................................................................... .....................99
PART 5 102
XSARA 102
GENERAL 104
I - FOREWORD...................................................................... .................104
II - LAYOUT...................................................................... .......................105
WARNING FUNCTION............................................................108
I - LIST OF LEDS.................................................................................. ...108
II - INTEGRATED BUZZER.....................................................................109
III - WARNING APPEARANCE CONDITIONS.........................................109
INSTRUMENTATION FUNCTION............................................112
I - MAINTENANCE INDICATOR..............................................................112
II - OIL LEVEL GAUGE ......................................................... ..................114
III - MILEOMETER.................................................................... ...............115
REPAIRING THE CONTROL PANEL......................................116
I - READING AND ERASING FAULTS............................................... ......116
II - PROGRAMMING THE MAINTENANCE TYPE ..................................116
III - ACTUATOR TEST ............................................................................ .116
IV - READING THE FOLLOWING PARAMETERS..................................117
D

PART 6 118
VISIBILITY
XSARA AND XSARA PICASSO..............................................118
GENERAL 120
I - FOREWORD...................................................................... .................120
II - GENERAL LAYOUT.................................................. .........................121
OPERATING PRINCIPLE........................................................124
I - WINDSCREEN WIPER FUNCTION....................................................124
II - REAR WIPER FUNCTION.................................................................126
III - MANAGEMENT OF WIPER PARKED POSITIONS..........................127
IV - WIPER PROTECTION............................................................ ..........127
V - DE-ICING................................................................................ ...........127
VI - HEADLAMP WASHER TIMER................................................. .........128
ELECTRICITY 130
I - LAYOUT DIAGRAM....................................................................... ......130
II - PARTS LIST.................................................................. .....................131
PART 7 134
LOCKING / UNLOCKING
XSARA AND XSARA PICASSO.............................................134
GENERAL 136
I - FOREWORD...................................................................... .................136
I - LOCKING / UNLOCKING.................................................... ................142
II - DEADLOCKING......................................................... ........................148
PART 8 150
AUTOMATIC CLIMATE CONTROL
XSARA PICASSO....................................................................150
GENERAL 152
I - FOREWORD...................................................................... .................152
III - LAYOUT DIAGRAM.................................................................... .......156
E

IV - DESCRIPTION OF THE USER DISPLAY AND CONTROLS............157
I - COMPRESSOR MANAGEMENT FUNCTION.....................................160
II - ADDITIONAL ELECTRIC HEATING FUNCTION................................165
III - DE-ICING FUNCTION............................................................. ..........165
IV - DOWNGRADED MODES.................................................................166
V - DIAGNOSTICS.......................................................... ........................167
ELECTRICITY 168
I - LAYOUT DIAGRAM - TU5JP......................................................... ......168
III - LAYOUT DIAGRAM - EW7....................................................... .........169
V - LAYOUT DIAGRAM - DW10..............................................................170
IV - PARTS LIST............................................................................ ..........171
PART 9 174
VEHICLE IMMOBILISATION
XSARA AND XSARA PICASSO ............................................174
TRANSPONDER SYSTEM OPERATING PRINCIPLE...........176
I - FOREWORD...................................................................... .................176
III - OPERATION................................................................................... ...178
OPERATING PRINCIPLE OF THE FACTORY FITTED ANTI-INTRUSION
ALARM 180
I - FOREWORD...................................................................... .................180
III - OPERATION................................................................................... ...182
OPERATING PRINCIPLE OF THE AFTER-SALES FITTED ANTI-
INTRUSION ALARM................................................................186
I - FOREWORD...................................................................... .................186
III - OPERATION................................................................................... ...188
OPERATING PRINCIPLE OF THE
SYSTEM STATUS LED...........................................................192
I - FUNCTION............................................................................... ...........192
II - FUNCTIONAL DESCRIPTION...........................................................192
F

ELECTRICITY 194
I - LAYOUT DIAGRAM....................................................................... ......194
II - PARTS LIST.................................................................. .....................195
PART 10 198
RADIO AND COMPACT DISC CHANGER
XSARA PICASSO ...................................................................198
GENERAL 200
I - FOREWORD...................................................................... .................200
RADIO OPERATING PRINCIPLE...........................................204
I - SWITCHING ON / OFF.......................................................................204
II - RADIO ANTI-THEFT FUNCTION.......................................................205
III - CONTROLLING THE BRIGHTNESS................................................205
IV - VOLUME AUTOMATICALLY LINKED TO VEHICLE SPEED............205
V - THERMAL PROTECTION............................................................. .....206
VI - CONFIGURATION...................................................... ......................206
ELECTRICITY 208
I - LAYOUT DIAGRAM....................................................................... ......208
II - PARTS LIST.................................................................. .....................209
G

H

PART 1
MULTIPLEXING / BSI
XSARA AND XSARA PICASSO

Chapter 1
MULTIPLEXING
I - BRIEF DEFINITION
Multiplexing is different from previous electrical technology in that it involves
transmitting several items of digital information between various devices on a
single transmission channel, in the form of 2 wires.
II - PURPOSE OF MULTIPLEXING
Multiplexing is used to:
• simplify electrical harnesses,
• increase functions (for the same number of wires).
1

Chapter 1
III - DESIGN OF THE XSARA PICASSO AND XSARA MULTIPLEXED NETWORK
XSARA PICASSO design
XSARA design
Key: The dotted lines represent a connection used only by the diagnostic
function.
* Available as an accessory 8410 Radio
BSI Built-in Systems Interface 8415 CD changer
0004 Control panel / Multifunction screen 8500 Navigation
8080 Automatic climate control 8600 Alarm
For the XSARA Picasso, a MultiFunction Screen is incorporated into the control
panel:
• MultiFunction Screen type B,
• MultiFunction Screen type C (for navigation option).
There is no MultiFunction Screen on the XSARA.
A communications protocol defines the rules and format of the exchanges between
the various ECUs. The communications protocol used on the XSARA and XSARA
PICASSO is the VAN.
2
8080 8410 8415 * 0004 8500
BSI
8600 *
84150004
BSI 8410

Chapter 1
IV - THE VAN PROTOCOL
The network consists of 2 wires, called:
• Data,
• Data B (Data bar).
The Data B wire is so called because the voltage at its terminals is always
opposite to the voltage on Data.
Two current levels are used to encode two distinct logical states.
This process is used to:
• limit the radiation given off,
• provide good resistance to interference.
There is an advantage in using these two wires and electronic circuits for emitting
and receiving signals. It allows operation in downgraded mode if one of the wires
is broken or short circuited to +12V or to earth.
If a wire breaks, the electronics compares the current level of the signal compared
to a reference. The electronics signals the data line faults.
3
5V
0V
5V
0V
t
t
Data
Data B

Chapter 1
Format of the communications message (frame): Only the rate of the Data line
is represented as the Data B line is the opposite.
A message in a multiplexed device is unambiguous. It is therefore not possible for
an error to occur regarding the recipient nor the nature of the command to be
performed.
A frame consists of 9 fields:
a start of message identifier used to locate the start of the message.
‚ an arbitration identification field used to specify the recipient or recipients of
the message.
ƒ this field specifies whether an acknowledgement request from the receiver
is required, depending on whether it involves a request for or distribution of
information.
„ a field containing the data of the message.
… a validity control field for the message in order to check the integrity of the
data upon arrival.
† a field marking the end of the actual data to indicate that the message is
finished.
‡ an acknowledgement field which allows the receiver to confirm that the
message has been correctly received.
ˆ an end of frame field.
‰ a frame separator which allows the next frame to use the same sequence
of 9 fields.
The electrical signals conveyed by the two wires are square and follow an
information encoding sequence. Only the ECUs of the system can interpret them.
IMPORTANT:It is forbidden to connect a measuring device (multimeter, etc) to
the VAN network.
Data and Data B wires can be repaired using Raychem connectors.
4
‚ ƒ „ … † ˆ ‰‡

Chapter 1
V - LOCATION OF MULTIPLEXED ECUS
XSARA PICASSO
XSARA
5
0004
8500
BSI
8080
8415 *
8410
8600 *
0004
BSI
8415
8410

Chapter 1
6

Chapter 2
BUILT-IN SYSTEMS INTERFACE
The Built-in Systems Interface (BSI) is an ECU which incorporates:
• Interface electronics (relays, fuses, diagnostic socket, HF receiver)
• Control electronics: The BSI is one of the masters of the VAN network, on which it
controls communications between the ECUs
• Calculation electronics: this controls the basic functions in an autonomous manner
(locking of the doors, signalling, visibility, interior lighting, engine immobiliser, etc).
• Information about the vehicle for the anti-theft protection (vehicle's VIN code, key
codes, HF remote control code, radio identification, etc)
• A program which is used to control the system and perform diagnostics and
configuration procedures.
The BSI acts as a gateway between the VAN network and the diagnostic tool.
In addition, it helps with energy management by controlling reduced consumption
modes for itself and the other multiplexed ECUs.
7

Chapter 2
I - FUNCTIONS CONTROLLED BY THE BSI ON THE XSARA PICASSO AND THE
XSARA
FUNCTION DETAILS
XSARA
PICASSO
XSARA
Signalling Indicator control X X
Hazard warning lamps button acquisition X X
Blown bulb detection X X
Illumination of indicators in the event of an impact X*
Signalling of the locked status of the vehicle X X
Locking Locking / unlocking using the plip X X
Locking / unlocking using the interior button X
Unlocking in the event of an impact X*
Rebound function X X
Boot opening button X
Locking motor protection X X
Automatic re-locking after 30 seconds of no action X X
Deadlocking X
Unlocking whilst driving a deadlocked vehicle X
Signalling of the locking status by a system status LED X
Vehicle immobilisation Encrypted code transponder function X X
BSI - engine management ECU wire connection X X
Signalling of engine ECU locked by system status LED X
Non multiplexed alarm X
Self-powered multiplexed alarm X X
Interior lighting Timed interior lamps upon opening doors X X
Progressive extinguishing, progressive illumination X X
Illumination upon removing the key X X
Windows Timed supply to electric windows and sunroof X
Visibility Control of normal commands (windscreen washer, etc) X X
Intermittent wiper function when stationary X
Reduction in wiper speed when stationary X
Rear wiper linked to reverse gear and to windscreen
wiper mode
X
Automatic windscreen and rear wipers with rain sensor X
Control of wiper parked position X X
Protection of windscreen and rear wiper motors X X
Timed de-icing of rear screen and door mirrors X X
Timed headlamp washers X
Timed extinguishing of headlamps X
* Suppressed but may be reinstated
8

Chapter 2
FUNCTION DETAILS
XSARA
PICASSO
XSARA
Driver's information Programmable maintenance indicator (through
connection on BSI)
X X
Acquisition of external temperature X
Time base X
Signalling of door status X X
Sidelamps on and key in ignition reminder X X
Automatic gearbox safety warning X
Overspeed warning X *
HF remote control battery worn warning X X
Transponder fault warning X X
Driving school pedal set warning X
Battery charge, alternator excitation fault warning X X
Acquisition by BSI and transmission of speed
information to the control panel
X X
Memorising of mileage in the control panel and BSI X X
Memorising of the VIN code and Diagnostic code X X
On-board ECU X
Air conditioning Automatic climate control (RFTA) X
Air conditioning X X
RTFA = Refrigeration - Totally Automatic
II - BSI LAYOUTS ON THE XSARA PICASSO AND XSARA
XSARA PICASSO
9
8410
8080
8500
8415 *
BSI
0004
1
7
5
6
2
8
9
10
11
8600 *
0

Chapter 2
XSARA
Key: single arrow = wire connection
triple arrow = multiplexed connection.
Note: The connection numbers are used to associate these diagrams to the
input-output tables for the XSARA Picasso (XsP) and the XSARA (Xs).
10
BSI
0004
12 13
16 15

Chapter 2
III - BSI INPUTS
A - SUPPLIES
DESCRIPTION EMITTER TYPE XSP XS
+ accessories information
Supply to + accessories track for windscreen /
rear wash / wipe steering wheel stalk
Ignition switch - accessories - ignition position All or Nothing
Supply
1 12
+ALT permanent power supply Alternator Supply 1 12
- +ignition on information
- Electronic redundant supply
Ignition switch - ignition - cranking positions Supply
All or Nothing
1 12
+BAT permanent electronic supply, cut off
when parked by removing the shunt from the
Passenger Compartment Fuse Box
Battery Supply 1 12
+BAT permanent power supply Battery Supply 1 12
+BAT permanent power supply for
smartpowers
Battery Supply 1 12
- Headlamp information
- Electrical redundant supply, track for number
plate, lighting of buttons
Lighting / headlamp signalling steering wheel
stalk
Supply
All or Nothing
1 12
Analogue earth for sensors on passenger
compartment harness
Earth 1 12
Analogue earth for sensors on main harness Earth 1 12
ECU earth Earth 1 12
Power earth Earth 1 12
B - WIRE INPUTS
DESCRIPTION ORIGIN TYPE XSP XS
Battery charge / alternator excitation (Input-
Output)
Alternator Analogue 1 12
Air conditioning compressor engaging
authorisation
Engine management ECU All or Nothing 1 12
Rear wiper motor parked position information Rear wiper motor All or Nothing 1 12
Windscreen wiper motor parked position
information
Windscreen wiper motor All or Nothing 1 12
Engine coolant temperature warning information Coolant Temperature Management Unit
FRIC Engine management ECU
Thermoswitch
All or Nothing 1 12
Impact detection information Inertia switch All or Nothing 1 12
Right hand indicators request Lighting / signalling steering wheel stalk All or Nothing 1 no
Left hand indicators request Steering wheel stalk All or Nothing 1 12
Boot or tailgate not closed switch Boot switch All or Nothing 1 no
Central locking request button Locking information (on dashboard) All or Nothing 1 12
Driver's door internal opening contact Driver's door lock All or Nothing 1 12
Front passenger's door internal opening contact Passenger's door lock All or Nothing 1 12
Rear right hand passenger's door open switch Rear right hand door open switch All or Nothing 1 12
Rear left hand passenger's door open switch Rear left hand door open switch All or Nothing 1 12
Driver's door open switch Front left hand door open switch All or Nothing 1 12
Front passenger's door open switch Front right hand door open switch All or Nothing 1 12
Bonnet not closed switch Bonnet switch All or Nothing no 12
Fuel flow information Engine ECU Frequency 1 12
Engine ECU fault information Engine ECU All or Nothing 1 12
On-board ECU scroll request Steering wheel stalk 1 12
Heated rear screen and door mirrors de-icing
request (except RFTA climate control)
De-icing button All or Nothing 1 12
11

Chapter 2
DESCRIPTION ORIGIN TYPE XSP XS
Hazard warning lamps request Hazard warning lamps button All or Nothing 1 12
Rear wiper request Wipers steering wheel stalk All or Nothing 1 12
Windscreen wipers high speed request Wipers steering wheel stalk All or Nothing 1 12
Windscreen wipers intermittent request Wipers steering wheel stalk All or Nothing 1 12
Rear screen wash request Wipers steering wheel stalk All or Nothing 1 12
Windscreen wash request Wipers steering wheel stalk All or Nothing 1 12
Boot open request Boot opening button All or Nothing 1 12
Diesel pre-heating information Engine ECU All or Nothing 1 12
Air con refrigerant safety information Pressure switch All or Nothing 1 12
Windscreen wipers slow speed request Wipers steering wheel stalk All or Nothing 1 12
- Reverse gear information
- Supply to REVERSE track for reversing lamps
Reverse gear contact All or Nothing 1 12
Engine speed information Engine ECU Frequency 1 12
Air conditioning request (for air con) Air conditioning panel All or Nothing 1 12
Locking/unlocking request through lock Front lock contacts All or Nothing 1 12
External air temperature information External air temperature sensor Analogue 1 12
Engine coolant temperature information (not
PSA2000 engine ECU and without FRIC)
Engine coolant temperature sensor Analogue 1 12
Engine coolant temperature information
(PSA2000 engine ECU and with FRIC)
Engine ECU Frequency 1 12
Air conditioning evaporator temperature
information
Evaporator temperature sensor Analogue 1 12
Vehicle speed information Speed sensor Frequency 1 12
Diagnostic serial connector (Input/Output) Diagnostic tool 1 12
C - MULTIPLEXED INPUTS
DESCRIPTION ORIGIN XSARA
PIC.
XSARA
Multifunction Screen requests
Request to reset journey counters Multifunction screen 5 no
Request to reset tripometers Multifunction screen C 5 no
Request to maintain +VAN comfort Multifunction screen 5 no
Control panel status
Oil pressure warning Control panel 5 15
Night driving mode Control panel 5 no
Parking brake Control panel 5 15
Control panel brightness level Control panel 5 15
Low fuel information Control panel 5 15
ABS fault Control panel 5 15
Electronic brakeforce distribution fault Control panel 5 15
Brake fluid fault Control panel 5 15
Automatic gearbox fault Control panel no 15
Gross fuel level Control panel 5 15
Dipped beam Control panel 5 15
Control panel reading
Stored mileage Control panel 5 15
Air conditioning requests
Air conditioning request Automatic climate control 6 no
Heated rear screen and door mirrors de-icing
request
Automatic climate control 6 no
12

Chapter 2
IV - BSI OUTPUTS
A - WIRE OUTPUTS
DESCRIPTION RECEIVER TYPE XSP XS
+ accessories supply for windscreen/rear wash/
wipe steering wheel stalk
Steering wheel stalk All or
Nothing
2 13
Air conditioning compressor authorisation Engine ECU All or
Nothing
2 13
Rear right hand indicator control Rear right hand indicator All or
Nothing
2 13
Rear left hand indicator control Rear left hand indicator All or
Nothing
2 13
Front right hand indicator control Front right hand indicator All or
Nothing
2 13
Front left hand indicator control Front left hand indicator All or
Nothing
2 13
Right hand repeater indicator control Right hand repeater indicator All or
Nothing
2 13
Left hand repeater indicator control Left hand repeater indicator All or
Nothing
2 13
Transponder clock signal Transponder Frequency 2 13
Air conditioning compressor clutch control Air conditioning compressor clutch relay All or
Nothing
2 13
Locking actuator control Door locks All or
Nothing
2 13
Unlocking actuator control Door locks All or
Nothing
2 13
Rear wiper motor control Rear wiper motor All or
Nothing
2 13
Windscreen wiper motor high speed control Windscreen wiper motor All or
Nothing
2 13
Supply: number plate, button lighting, etc Items illuminated at night All or
Nothing
2 13
Heated rear screen control Heated rear screen All or
Nothing
2 13
Supply: front electric window motors, sunroof,
rear electric window relay control
Electric window motors, rear electric window relays All or
Nothing
2 13
Low fuel information Engine ECU All or
Nothing
2 13
Engine running information Engine running relay All or
Nothing
2 13
Boot opening actuator control Boot opening lock All or
Nothing
2 13
Rear interior lamp control Rear interior lamp switch All or
Nothing
2 13
Front interior lamp control Front interior lamp switch All or
Nothing
2 13
Windscreen wiper motor slow speed control Windscreen wiper motor All or
Nothing
2 13
Reversing lamps supply Reversing lamps All or
Nothing
2 13
Sidelamps relay control Sidelamps relay All or
Nothing
2 no
Heated door mirrors control Door mirrors relay All or
Nothing
2 13
Engine ECU resupply command for engine
immobiliser
Engine ECU double relay All or
Nothing
2 13
Heated rear screen and door mirror lamp control
(except RFTA climate control)
De-icing switch All or
Nothing
10 no
Hazard warning lamps button lamp control Hazard warning lamps button lamp All or
Nothing
2 13
System status LED control System status LED All or
Nothing
2 no
Supply: VAN bus power on passenger
compartment harness
VAN network All or
Nothing
2 13
Supply: VAN bus power on main harness VAN network All or
Nothing
2 13
13

Chapter 2
B - MULTIPLEXED OUTPUTS
DESCRIPTION RECEIVER XSARA
PIC.
XSARA
Fast BSI data
Engine speed Control panel/MFS 8 16
Instantaneous vehicle speed Control panel/MFS, Air conditioning, Radio CD 8, 9, 10 16
Mileage Control panel/MFS 8 16
Fuel consumption Control panel/MFS 8 16
Slow BSI data
Day / Night status Control panel/MFS, Air conditioning, Radio 8, 9, 10, 11 no
Night driving mode Control panel/MFS, Air conditioning 8, 10 no
Control panel brightness level Control panel/MFS, Air conditioning 8, 10 no
(Alarm on stand-by) Alarm (accessory) 0 no
Factory / Customer mode MFS, Radio, CD changer 8, 9, 11 16
Reverse gear Navigation 7 no
Economy mode Control panel/MFS, Air conditioning, Radio CD 8, 9, 10 16
Set to stand-by in 5 seconds Control panel/MFS, Air conditioning, Radio,
CD changer
8, 9, 10, 11 16
Engine running Control panel/MFS, Air conditioning 8, 10 16
Position of ignition key Control panel/MFS, Air conditioning 8, 10 16
Coolant temperature Control panel/MFS 8 16
Vehicle mileometer Control panel/MFS 8 16
External temperature Control panel/MFS, Air conditioning 8, 10 no
BSI configuration
VIN Radio 9 no
BSI display
Coolant temperature warning Control panel/MFS 8 16
Brake fluid / hydraulic level warning Control panel/MFS 8 16
Door(s) open, engine running warning Control panel/MFS 8 16
Oil pressure warning Control panel/MFS 8 no
Electronic brakeforce distribution fault Control panel/MFS 8 no
ABS fault Control panel/MFS 8 16
EOBD fault Control panel/MFS 8 16
Battery charging fault Control panel/MFS 8 16
Headlamps left on reminder signal Control panel/MFS 8 16
Key in ignition reminder signal Control panel/MFS 8 16
Overspeed signal Control panel/MFS 8 16
Parking brake Control panel 8 16
HF plip battery worn MFS 8 no
Impact sensor signal MFS 8 no
Electric engine immobiliser system fault Control panel/MFS 8 16
Vehicle locking status Control panel/MFS 8 no
14

Chapter 2
DESCRIPTION RECEIVER XSARA
PIC.
XSARA
BSI CPL displays
Front right hand door open MFS 8 no
Front left hand door open MFS 8 no
Rear right hand door open MFS 8 no
Rear left hand door open MFS 8 no
Boot open MFS 8 no
Consumption invalid (flowmeter fault) MFS 8 no
Range invalid (sender fault) MFS 8 no
Range calculation impossible (fuel level too low) MFS 8 no
Distance travelled insufficient (less than 400 m
since resetting)
MFS 8 no
Journey distance insufficient (less that 400 m
since resetting)
MFS C 8 no
Status of on board ECU scroll button MFS 8 no
Average speed travelled MFS 8 no
Average journey speed MFS 8 no
Filtered speed MFS 8 no
Cumulative distance travelled MFS 8 no
Average consumption MFS 8 no
Cumulative journey distance MFS C 8 no
Average journey consumption MFS C 8 no
Instant consumption MFS 8 no
Remaining range MFS 8 no
BSI event
Main event present MFS 8 no
Secondary event present MFS 8 no
Source of the event MFS 8 no
Change of signals and modes MFS 8 no
Change of door status MFS 8 no
Change of on board ECU data MFS 8 no
Control panel functions
Activation of control panel Control panel 8 16
Pre-heating Control panel 8 16
Hazard warning lamps Control panel 8 16
Right hand indicator Control panel 8 16
Left hand indicator Control panel 8 16
Air conditioning information
Air conditioning activation Automatic climate control 10 no
Compressor authorisation Automatic climate control 10 no
Heated rear screen operating status Automatic climate control 10 no
Compressor status Automatic climate control 10 no
Coolant pressure/temperature, evaporator safety Automatic climate control 10 no
Evaporator temperature Automatic climate control 10 no
15

Chapter 2
V - LOCATION AND TYPE OF THE CONNECTORS ON THE BSI
CONNECTOR DESCRIPTION CHANNELS COLOUR
P Power Supply Connector to main harness 2 GREY
PP Power Connector to main harness 16 GREEN
PH Power Connector to passenger compartment harness 16 BLACK
EP1 Electronic Connector to main harness 26 YELLOW
EP2 Electronic Connector to main harness 12 BROWN
EH1 Electronic Connector to passenger compartment harness 26 BLUE
EH2 Electronic Connector to passenger compartment harness 12 BLUE
16
EH1
EP1
EH2
EP2
P
PP
PH

Chapter 2
VI - CHANNEL ALLOCATION ON THE BSI
BSI inputs/outputs
Power part.
• Allocation of pins of the Grey 2-way NG1 connector of the main harness.
1 - + permanent
2 - + alternator
17
1
2

Chapter 2
• Allocation of pins of the Green 16-way SIGMA connector of the main harness.
8 - Output: Power supply of the VAN bus on main
harness
7 - Output: Front left hand indicator control
6 - Output: Front right hand indicator control
5 - Output: + accessories for wash/wipe stalk
4 - Input: Lamps
3 - Input: Reverse gear switch
2 - Power earth
1 - Output: Windscreen wiper slow speed motor
control
16 - + permanent
15 - Output: Right hand repeater indicator control
14 - Output: Left hand repeater indicator control
13 - Output: Air conditioning compressor control
12 - Power earth
11 - Spare
10 - Spare
9 - Output: Windscreen wiper high speed motor
control
18
7
8
6
5
4
3
2
1
16
15
14
13
12
11
10
9
7
8
6
5
4
3
2
1
16
15
14
13
12
11
10
9

Chapter 2
• Allocation of pins of the Black 16-way SIGMA 2 connector of the passenger
compartment harness.
8 - Output: Front electric window supply
7 - Output: Left hand repeater indicator control
6 - Output: Right hand repeater indicator control
5 - Output: Rear wiper control
4 - Output: Locking motors control
3 - Output: Unlocking motors control
2 - Output: Heated door mirrors control
1 - Output: Heated rear screen control
16 - Output: Power supply of the VAN bus on
passenger compartment harness
15 - Output: Rear left hand indicator control
14 - Output: Rear right hand indicator control
13 - + accessories
12 - Output: Lamps
11 - Output: Reversing lamps
10 - Output: Deadlocking motors control
9 - Output: Heated rear screen control 2
19
7
8
6
5
4
3
2
1
16
15
14
13
12
11
10
9
7
8
6
5
4
3
2
1
16
15
14
13
12
11
10
9

Chapter 2
• Allocation of pins of the Yellow 26-way MQS 26 connector of the main harness.
1 - K diagnostic line serial connection
2 - Input: Vehicle speed information
3 - Input: Engine ECU serial connection for engine immobiliser
4 - Input: Engine speed information through engine ECU
5 - Output: Heated rear screen and door mirrors lamp control
(except RFTA VAN)
6 - Output: Engine ECU resupply control for engine immobiliser
7 - Input: Windscreen wash control
8 - Input: Wash/wipe control intermittent mode (no rain sensor)
auto mode (with rain sensor)
9 - Output: Low fuel level to engine ECU
10 - Input: Rear screen wash control
11 - Input: Rear wiper
12 - Input: Right hand indicator control
13 - Input: Windscreen wiper motor parked information
14 - Input/Output: Battery charge/alternator excitation
15 - Output: Transponder clock signal
16 - Output: Engine ECU serial connection for engine immobiliser
17 - Transponder aerial serial connection for engine immobiliser
18 - Input: Coolant temperature info by FRIC engine ECU (PWM)
19 - Input: Windscreen wiper high speed control
20 - Input: Windscreen wiper slow speed control
21 - Input: Diesel preheating information
22 - Input: Inertia switch information
23 - Input: Coolant temperature warning information through
thermoswitch
24 - Input: Engine ECU fault information
25 - Input: De-icing button
26 - Input: Left hand indicator control
20
141
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
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12
13
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16
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20
21
22
23
24
25
26
14
15
16
17
18
19
20
21
22
23
24
25
26

Chapter 2
• Allocation of pins of the Brown 12-way MQS connector of the main harness.
1 - Input: On board ECU scroll request
2 - Input: Navigation recall last message request
3 - For supplier use
4 - Output: Headlamp washer relay control
Output: Sidelamp relay control (timed illumination)
5 - Output: Air conditioning compressor authorisation request
to engine ECU
6 - Input: Air conditioning compressor authorisation through
engine ECU
7 - Analogue earth
8 - Input: Evaporator temperature information
9 - Input: Fuel flow information through engine ECU
10 - Input: Coolant temperature information through thermistor
(analogue)
11 - Input: Refrigerant pressure safety information
12 - Input: Air conditioning request
• Allocation of pins of the Blue 12-way MQS connector of the passenger
compartment.
1 - Output: Ultra sound module supply
2 - Input: Bonnet switch
3 - Input/Output: Siren serial connection
4 - Output: Close electric windows request when
(dead)locking
5 - Input: Alarm request through ultrasound module
6 - Input: Volumetric suppression request button
7 - 12 - Spare
21
71
2
3
4
5
6
8
9
10
11
12
71
2
3
4
5
6
8
9
10
11
12
7
8
9
10
11
12
1
2
3
4
5
6

Chapter 2
• Allocation of pins of the Blue 26-way MQS connector of the passenger
compartment harness.
1 - Output: Engine running
2 - Input: Locking request through lock
3 - Input: Unlocking request through lock
4 - Input: Hazard warning lamps request button
5 - Input: Front right hand door locking button control
6 - Input: Rear left hand door switch
7 - Input: Tailgate or boot switch
8 - Input: Front left hand door locking button control
9 - Output: System status LED (locking/transponder/alarm
function)
10 - Input: Rear wiper motor parked information
11 - Input: Front right hand door switch
12 - Input: Rear right hand door switch
13 - Input: Front left hand door switch
14 - Input/Output: Rain sensor serial connection
15 - Output: Door sill lighting control
16 - Output: Rear interior lamp control
17 - Output: Front interior lamp control
18 - Output: Hazard warning lamps button LED control
19 - DATA of the SCREEN/COMFORT VAN bus
20 - Input: External air temperature information
21 - DATA B of the SCREEN/COMFORT VAN bus
22 - + ignition on
23 - + permanent
24 - Analogue earth of the passenger compartment harness
25 - Earth
26 - Earth
22
141
2
3
4
5
6
7
8
9
10
11
12
13
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16
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23
24
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26

Chapter 2
VII - OPERATING MODES
A - NOMINAL MODE OR CUSTOMER MODE
All functions are operational. This is the operating mode designed for normal
vehicle use.
B - STAND-BY MODE
In this mode, there is no communications activity and ECU consumption is
minimal. The BSI scans its wake-up inputs. Each multiplexed device is able to
wake up the network. In each case, it re-supplies all the ECUs by a positive
called the +VAN.
ACTION WAKE-UP NETWORK
IF condition Ignition on (+accessories or + ignition on)
OR condition Lamps or hazard warning lamps illuminated
OR condition HF remote control used
OR condition Driver's door opened
OR condition Data B earthed
OR condition Request to wake-up network by VAN device (radio)
ACTION SET NETWORK TO STAND-BY
IF condition Ignition not on
AND condition No timer
AND condition No request to maintain network
C - ECONOMY MODE
The BSI cuts the supply to the ECUs (+VAN signal), there are no more
communications on the network. Electrical consumption is therefore greatly
reduced.
Entry into mode Engine switched off for more than 30 minutes and
+VAN present
Exit from mode Starting of the engine
Note: A network device can be active and/or communicating, even if it does
not appear to be working.
23

Chapter 2
VIII - AFTER-SALES OPERATIONS, ACCESSORIES
A - GENERAL
In the factory, an initialisation procedure is performed at the end of vehicle
assembly in order to allow the various devices to recognise each other:
• ignition key with integrated transponder and BSI,
• HP remote controls and BSI,
• engine management ECU and BSI,
• radio and BSI.
B - ACCESSORIES
All new devices which have not undergone a programming procedure are not
recognised by the system and are therefore not operational. It is therefore
essential to declare all accessories which are added to or removed from the
vehicle. All programming procedures require the use of a diagnostic tool. They
must be performed on the vehicle.
Note: The multiplexed self-powered alarm must be disconnected when
performing a diagnostic procedure on the vehicle.
ACCESSORIES PROGRAMMING IF
ADDING/REMOVING
XSARA PICASSO CD changer YES > Programming of the control
panel
Alarm YES > Deactivation of signalling when
locking: BSI programming
XSARA Accessory alarm YES > BSI programming +
deactivation of signalling when locking
C - CUSTOMISATION OF CERTAIN FUNCTIONS
Upon the customer's request, the BSI can be programmed to activate the
function or not.
Radio volume linked to vehicle speed: Programming of the radio.
24

Chapter 2
D - REPLACEMENT OPERATIONS
1 - Customer confidential card
The access code (4 characters) is given to the customer on a confidential
card. It can be seen after removing the masking strip on the card. It is
required for all maintenance procedures on the system.
IMPORTANT:Before adding or replacing parts, ensure that the
customer is still in possession of his confidential card.
2 - Loss of access code
The access code is linked to a chassis number and managed by the
CITROËN network.
3 - Ordering parts
PART TO BE
ORDERED
TO BE OBTAINED FROM
THE CUSTOMER
TO BE SUPPLIED
BSI confidential card
vehicle registration document
form of identity
faulty BSI
BSI access code
vehicle VIN code
Engine ECU confidential card
vehicle registration document
form of identity
Faulty engine ECU
BSI access code
vehicle VIN code
Key with integrated
transponder
1 key mechanical key code
Key with integrated
transponder and HF
remote control
1 key mechanical key code
25
CITROËN

Chapter 2
4 - Repairs
ITEM TO BE
REPLACED
ESSENTIAL ITEMS OPERATIONS TO BE
PERFORMED
BSI ONLY * Customer's confidential card.
All vehicle keys.
New BSI.
Diagnostic tool.
Programming of access code.
Programming of keys and HF
remote controls.
ENGINE ECU
ONLY
Customer's confidential card.
New engine ECU.
Diagnostic tool.
Programming of engine ECU
code.
KEYS AND/OR
REMOTE
CONTROLS
All vehicle keys.
Diagnostic tool.
Programming of keys and HF
remote controls.
BSI *
+
ENGINE ECU
All vehicle keys.
New BSI + engine ECU.
Diagnostic tool.
Programming of access code.
Programming of keys and/or HF
remote controls.
Programming of engine ECU
code.
* Remember to configure the BSI according to the correct customisation
of the functions and accessories fitted on the vehicle.
5 - Interchanging parts
WARNING: Interchanging the BSI and engine ECU with one (or
several) components from a different vehicle is strictly
forbidden.
The transponder keys, HF remote controls, BSI and engine ECU are
linked to the vehicle's VIN.
E - DIAGNOSTIC
The BSI acts as a gateway for the diagnostic tool which is used to identify the
faults in certain components of the system.
A fault may be:
• a short circuit to earth or to +12V,
• an open circuit (broken wire),
• an operating fault (invalid value sent by a sensor),
• an ECU which no longer communicates on the network: network isolated
or faulty ECU.
26

Chapter 2
Below is a list of faults which can be returned by the BSI on the XSARA and
the XSARA PICASSO:
FAULT XSARA XSARA
PICASSO
+Accessories stuck on 0 X X
Ultrasound unit supply - short circuit to earth X
Alternator X X
+ignition on stuck on 0 X X
Rain sensor X
Air conditioning – Air conditioning compressor - Authorisation X X
De-icing - Lamp output short circuited to earth X X
Lighting - right hand indicators X X
Lighting - left hand indicators X X
Engine ECU - error code received X X
Engine ECU - reception fault X X
Engine ECU - Relays - Short circuited to earth X X
Engine ECU or EOBD X X
Hazard warning lamps - Input (request) stuck on 1 X X
Hazard warning lamps - Button LED - Short circuited to earth X X
Low fuel - Short circuited to +BAT X X
Plip - battery in current key worn X X
EEPROM problem X X
Engine speed X X
Locking motors - Permanent request from ignition key X X
Unlocking motors - Permanent request from ignition key X X
Siren X
Evaporator sensor - Short circuit X X
Coolant temperature X X
Transponder - Short circuit on connection with ring X X
Transponder - Identification X X
COMFORT VAN - BSI mute X X
COMFORT VAN - Air conditioning mute X X
COMFORT VAN - Communication on Data X X
COMFORT VAN - Communication on Data B X X
COMFORT VAN - Multifunction screen mute X X
COMFORT VAN - Wake-up by network prohibited due to short circuit on
Data B
X
Vehicle speed - invalid value or sensor connection problem X X
System status lamp - Short circuited to +BAT X X
COMFORT VAN – Communications fault counter on DATA X
COMFORT VAN – Communications fault counter on DATA B X
COMFORT VAN – Frames not sent counter - BSI mute X
COMFORT VAN – Control panel counter missing X
COMFORT VAN – Multifunction screen counter missing X
COMFORT VAN – Air conditioning counter missing X
27

Chapter 2
28

Chapter 3
ELECTRICITY
I - LAYOUT DIAGRAM
PFM001P
29

Chapter 3
II - PARTS LIST
BB00 - Battery
BB12 - + battery connection terminal
BH12 - 12 fuse box (passenger compartment)
BM34 - 34 fuse engine relay unit
BSI1 - Built-in systems interface
C001 - Diagnostic connector
CA00 - Ignition switch
CT00 - Rotary connector
0002 - Signalling/lighting stalk
0004 - Control panel
0005 - Wiper stalk
1010 - Starter motor
1020 - Alternator
1203 - Inertia switch
1211 - Fuel sender pump
1220 - Engine coolant temperature sensor
1313 - Engine speed sensor
1320 - Engine management ECU
1620 - Vehicle speed sensor
2300 - Danger signal switch
2340 - Left hand side repeater
2345 - Right hand side repeater
2610 - Left hand headlamp
2615 - Right hand headlamp
2630 - Rear left hand lamp on body
2635 - Rear right hand lamp on body
3010 - Front interior lamp
3020 - Rear interior lamp
3050 - Lighting rheostat
3054 - Ashtray lighting
3105 - Boot (or tailgate) lighting
30

Chapter 3
3110 - Glove box lighting switch
3115 - Glove box lighting
4010 - Engine coolant level switch
4025 - Temperature sensor - engine coolant thermoswitch (gauge)
5015 - Windscreen wiper motor
5115 - Windscreen/rear screen washer pump
6202 - Front door lock assembly driver's side
6207 - Front door lock assembly passenger's side
6260 - Boot locking motor
8006 - Evaporator thermistor (if separate)
8007 - Pressure switch
8008 - Air conditioning engine coolant temperature thermistor
8010 - Coolant temperature unit
8020 - Air conditioning compressor
8025 - Air conditioning control panel (if separate)
8030 - Passenger compartment air thermistor
8031 - Coolant thermistor
8045 - Blower control module (if separate)
8050 - Blower motor (if separate)
8065 - Mixing flap reduction motor
8070 - Air input flap reduction motor
8071 - Distribution flap reduction motor
8220 - Analogue module transponder
8410 - Radio
8413 - Radio control
8415 - Compact disc changer
8420 - Loud speakers on front door (driver's side)
8425 - Loud speakers on front door (passenger's side)
8430 - Loud speaker (rear left hand)
8435 - Loud speaker (rear right hand)
8440 - Front left hand tweeter speaker
8445 - Front right hand tweeter speaker
8500 - Navigation ECU
31

Chapter 3
32

PART 2
SIGNALLING

Chapter 1
GENERAL
I - FOREWORD
The left and right hand indicators and side repeaters can be controlled
simultaneously or independently in the following order of priority:
1 Automatic illumination of hazard warning lamps in the event of an impact
(XSARA PICASSO only).
2 Locking / unlocking using the HF remote control or the key.
3 Hazard warning lamps.
4 Indicators.
The BSI incorporates the flasher unit and the internal relays. The indicators are
therefore connected DIRECTLY to an output of the BSI. The LEDs and buzzer on
the control panel are activated through the Comfort VAN network.
II - GENERAL LAYOUT
triple arrow = multiplexed connection
33
A B
BSI 1
0004
2 3

Chapter 1
COMPONENTS
BSI Built-in Systems Interface
0004 Control panel
A Steering wheel stalk
Hazard warning lamps button
Inertia switch
B Indicators and side repeaters
Hazard warning lamps button LED
CONNECTIONS
N° SIGNAL TYPE
1 Control of the lamp and buzzer VAN
2 Indicators activation request All or Nothing
Hazard warning lamps activation request All or Nothing
Impact detection All or Nothing
3 Indicators and side repeaters control All or Nothing
Hazard warning lamps button LED control All or Nothing
34

Chapter 2
OPERATING PRINCIPLE
I - INDICATOR FUNCTION
Function
The BSI controls the direction indicators, the side repeaters and the LEDs on the
control panel.
Functional description
The driver's request is acquired by the right or left hand indicator contacts when
the ignition is on.
II - HAZARD WARNING LAMPS FUNCTION
A - ILLUMINATION OF THE HAZARD WARNING LAMPS BY PRESSING THE
HAZARD WARNING LAMPS BUTTON
Function:
The BSI controls the direction indicators, the side repeaters, the danger signal
warning LED and the LEDs on the control panel.
Functional description:
The driver's request is acquired by the hazard warning lamps button contact,
located on the instrument panel. The function can always be activated,
whether the ignition is on or off, except for the LEDs on the control panel
which are only activated if the + accessories or + ignition are on.
Note: Pressing this button can wake up the VAN network.
Display:
The danger warning LED is activated by connecting an output of the BSI to
+BAT.
The LED on the control panel will not be activated if the + accessories is not
on.
35

Chapter 2
B - AUTOMATIC ILLUMINATION OF HAZARD WARNING LAMPS IN THE EVENT
OF AN IMPACT
Note: This function is only available on the XSARA PICASSO
Function:
The BSI controls the hazard warning lamps when an impact is detected.
Action Illumination of hazard warning lamps.
IF condition the ignition is on
AND condition the impact detection input is activated (connected to
+BAT).
The impact is detected by the inertia switch mounted on a rigid part of the
vehicle's structure (mechanical switch). The hazard warning lamps can be
switched off after an impact by pressing the button.
Note: This function is not totally reliable. It depends on the size and type of
the impact. The fact that the hazard warning lamps have illuminated in
the event of an impact should therefore not be communicated.
III - FAULTY BULB DETECTION FUNCTION
Function:
The aim of this function is to double the illumination frequency of the indicators
(left or right hand) if at least one blown bulb is detected.
Detection is performed whilst the indicators and side repeaters (left or right hand)
are operating, by reading the control current of the indicators.
If the current supplied by the BSI is greater than the current consumed by an
indicator or a side repeater bulb, operation is normal. If not, the illumination
frequency is doubled.
All operating faults are recorded by the BSI so that they can be read by the
diagnostic tool.
Note: When a tow bar is fitted, 2 bulbs must have blown for detection to occur.
36

Chapter 3
ELECTRICITY
I - LAYOUT DIAGRAM
PFM002P
37

Chapter 3
II - PARTS LIST
BB00 - Battery
0005 - Wiper stalk
1020 - Alternator
38

Chapter 3
8410 - Radio
39

Chapter 3
40

PART 3
INTERIOR LIGHTING

Chapter 1
GENERAL
I - FOREWORD
The interior lighting consists of 2 interior lamps. They are activated by:
• the 4 vehicle doors,
• the tailgate on the XSARA PICASSO,
• the interior lamp switches.
Positions of an interior lamp switch:
0 "Off" position
I "On" position
PO "Door open" position
Progressive illumination and extinguishing of the interior lamps
The interior lamps always illuminate and extinguish progressively. The aim of this
function is to protect passengers against a sudden change in lighting.
41
0 IPO

Chapter 1
Layout diagram:
Below is the illumination and extinguishing cycle for each interior lamp:
• transitions to an illuminated state have priority,
• progressive illumination / extinguishing transitions are possible,
• there is no perceptible discontinuity.
KEY
1 Progressive illumination of interior lamp
2 Interior lamp illuminated
3 Progressive extinguishing of interior lamp
4 Interior lamp extinguished
ACTION TIMER
Progressive illumination 1 second
Progressive extinguishing 4 seconds
42
1
2
3
4

Chapter 1
II - GENERAL LAYOUT
COMPONENTS
A Switches of the 4 doors (and tailgate on the Xsara Picasso).
Interior lamp switches
Ignition switch
B Front and rear interior lamps
CONNECTIONS
N° SIGNAL TYPE
1 Status of doors/tailgate All or Nothing
Change of interior lamp status request ------
Presence of ignition key All or Nothing
Presence of + accessories All or Nothing
2 Timed illumination control Analogue
43
A B
BSI
1 2

Chapter 1
44

Chapter 2
OPERATING PRINCIPLE
Interior lamp timer
Function:
To control:
• the illumination duration of the interior lamps (10 minutes or 10 seconds),
• the extinguishing of the interior lamps.
10 minute
timer
10 second
timer
Extinguishing
Door/tailgate
status
X opening X X closing X closed closed closed closing closed closed X
+ accessories X X X X missing X + ACC
on
X X present X X X
Locking X X X X X X X yes X X X X X
Unlocking X X yes X X X X X X X X X X
Switch position X→a X X X b X b b b b a→b a→c X
Removal of
ignition key
X X X yes X X X X X X X X X
10 second
timer
X X X X X no X X end X X X X
10 minute
timer
X X X X X end X X no X X X X
Economy
mode
no no no no X X X X X X X X Entry
into
mode
X = Neutral status.
45

Chapter 2
46

Chapter 3
ELECTRICITY
I - LAYOUT DIAGRAM
PFM003P
47

Chapter 3
II - PARTS LIST
BB00 - Battery
0005 - Wiper stalk
1020 - Alternator
48

Chapter 3
8410 - Radio
49

Chapter 3
50

PART 4
XSARA PICASSO

Chapter 1
GENERAL
I - FOREWORD
This function is shared between four sub-functions:
• Instrumentation function,
• Messages and Warnings function,
• Lighting function,
• On-board ECU function.
The control panel is at the centre of the Driver's Information function. The basic
control panel (type B) is described in this section.
53

Chapter 1
II - LAYOUT
The control panel receives information along the wires and by communicating with
the ECUs via the VAN network.
COMPONENTS
0004 Control panel / MFS (LEDs + microprocessor)
8410 Radio
8415 CD changer available as an option
A pressure switch
electrodes
Parking brake switch
Steering wheel stalk
Airbag ECUs
Fuel sender
Child safety switch
ABS valve block
Brake fluid gauge
+ rheostat button
- rheostat button
54
BSI
8410
8415
6
2
1
7
4
5
A
0004

Chapter 1
A - INPUTS TO THE CONTROL PANEL/MULTIFUNCTION SCREEN (MFS)
Wire inputs
DESCRIPTION ORIGIN TYPE N°
Low coolant level Level sensor All or nothing
Parking brake status Switch All or nothing
Mainbeam status Steering wheel stalk All or nothing
Dipped beam status Steering wheel stalk All or nothing
Side airbags fault Side airbags ECUs All or nothing
Front airbag fault and
passenger's airbag status
Airbag ECU All or nothing
and frequency
depending on
fault
Fuel level Fuel sender Analogue 6
RH and LH child safety Child safety switch All or nothing
ABS fault ABS valve block Lamp active
Electronic brakeforce
distributor fault
ABS valve block All or nothing
Radio and CD changer
status change request
Steering wheel stalk All or nothing
Analogue
Front and rear fog lamps
control
Steering wheel stalk All or nothing
Brake fluid level Brake fluid gauge All or nothing
Increase brightness Rheostat All or nothing
Decrease brightness Rheostat All or nothing
Min oil pressure Pressure sensor All or nothing
55

Chapter 1
Multiplexed inputs
BSI ⇒ CONTROL PANEL MFS
Fast BSI data
DESCRIPTION N°
Engine speed
Instantaneous vehicle speed 3
Distance travelled
Fuel consumption
Slow BSI data
DESCRIPTION N°
Day / night status
Night driving mode
Control panel brightness level
(Alarm on stand-by)
Factory / Customer mode
Reverse gear
Economy mode 3
Set to stand-by within 5 seconds
Engine running
Position of ignition key
Coolant temperature
Vehicle mileometer
External temperature
BSI configuration
DESCRIPTION N°
VIN 3
56

Chapter 1
BSI display
DESCRIPTION N°
Coolant temperature warning
Brake fluid / hydraulic level warning
Door(s) open warning, engine running
Oil pressure warning
Electronic brakeforce distributor (EBD) fault
ABS fault
EOBD fault
Battery charge fault 3
Headlamps left on reminder warning signal
Key left in ignition reminder warning signal
Overspeed warning signal
Parking brake
HF plip battery worn
Impact sensor warning signal
Electric engine immobiliser system fault
Vehicle locking status
BSI events
DESCRIPTION N°
Main event present
Secondary event present
Source of the event 3
Change of signals and modes
Change of door status
Change of on board ECU data
57

Chapter 1
Additional BSI display
DESCRIPTION N°
Front right hand door open
Front left hand door open
Rear right hand door open
Rear left hand door open
Boot open
Consumption invalid (flowmeter fault)
Range invalid (sender fault)
Range calculation impossible (fuel level too low)
Distance travelled insufficient (less than 400 m since
resetting)
3
Journey distance insufficient (less than 400 m since
resetting)
Status of on board ECU scroll button
Average speed travelled
Average journey speed
Filtered speed
Cumulative distance travelled
Average consumption
Cumulative journey distance
Average journey consumption
Instantaneous consumption
Remaining range
Control panel functions
DESCRIPTION N°
Activation of control panel
Pre-heating
Hazard warning lamps LED 3
Right hand indicator
Left hand indicator
58

Chapter 1
CD changer ⇒ CONTROL PANEL/MFS
DESCRIPTION N°
CD changer event 5
CD changer status
Radio ⇒ CONTROL PANEL/MFS
DESCRIPTION N°
Radio event
General radio status 7
Specific radio status
Multiplexed outputs
Control panel/MFS ⇒ BSI
Control panel status
DESCRIPTION N°
Oil pressure warning
Night driving mode
Parking brake
Control panel brightness level
Low fuel information 7
ABS fault
Electronic brakeforce distributor (EBD) fault
Brake fluid fault
Automatic gearbox fault
Gross fuel level
Dipped beam
Control panel reading
DESCRIPTION N°
Saved mileage 2
59

Chapter 1
MFS request
DESCRIPTION N°
Request to reset cumulative distance
Request to reset cumulative journeys 2
Request to maintain + comfort VAN
MFS/CONTROL PANEL ⇒ radio
DESCRIPTION N°
Radio control 1
MFS/CONTROL PANEL ⇒ CD changer
DESCRIPTION N°
CD changer control 4
60

Chapter 1
III - XSARA PICASSO CONTROL PANEL
A - FUNCTION
The control panel has the following functions:
• Acquisition of information from the sensors and VAN network,
• Sending of data on the VAN network,
• Display of on board ECU parameters on the multifunction screen (type B),
• Warning to the driver of the vehicle status (noise, message, maintenance
information, LEDs),
• Operation of radio and CD changer,
• Storing of distance travelled,
• Overspeed detection.
B - GENERAL DESCRIPTION
The control panel consists of the following components:
• Strip of LEDs; zone "b",
• Instrumentation screen; zone "f",
• Multifunction screen, type B; zone "e",
• Integrated buzzer,
• "Night driving" push button; button "a",
• "Tripometer" reset push button; button "g",
• "Access to adjustment menu" push button; button "c",
61
a
d
c
g
b
f e

Chapter 1
• "Incrementation in adjustment menu" push button; button "d"
62

Chapter 1
C - LEDS
The control panel contains the following strip of LEDs:
LED FUNCTION
V1 Not used
V2 Left hand indicator LED
V3 Front fog lamp
V4 Rear fog lamp
V5 ABS fault
V6 Diesel pre-heating
V7 Battery charge
V8 Brake fault
V9 Oil pressure
V10 Diagnostic: side AIRBAG
V11 Front AIRBAG + pyrotechnic seatbelts diagnostic or passenger
AIRBAG deactivated
V12 Headlamps
V13 Dipped beam
V14 Main beam
V15 Right hand indicator LED
V16 Engine management LED
D - INSTRUMENTATION SCREEN
The instrumentation screen includes:
• A speedometer,
• A mileometer (incorporating the main mileometer, tripometer and
maintenance indicator LED V19 functions),
• A coolant temperature gauge with a coolant temperature warning (LED
V18),
• A fuel level gauge with a low fuel warning (LED V17).
63
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V15 V16
V19
V18
V17

Chapter 1
E - MULTIFUNCTION SCREEN, TYPE B
The display is divided into four zones:
Zone "j": display of the time and external temperature and other messages,
Zone "k": display of the audio, CD changer and on board ECU settings,
Zone "h": display of the "central locking" and "child safety" symbols,
Zone "l": display of the symbols linked to the radio information.
The functions associated to the multifunction screen B are:
• Display of the time, date and external temperature,
• Display of the information linked to the radio and CD changer,
• On board ECU,
• Vehicle warnings.
F - INTEGRATED BUZZER
The buzzer integrated into the control panel produces 5 types of sound:
• "Flashing" type sound D1,
• "Overspeed" type 2 tone sound D2.a,
• "Headlamps left on" type 2 tone sound D2.b,
• "Key left in ignition" type 3 tone sound D2.c,
• "Warning beep" type sound D3.
A sound is emitted in the following situations:
• when certain messages appear on the multifunction screen,
• when certain LEDs illuminate,
• when a warning not associated to a message or an LED appears.
64
l
kh
j

Chapter 1
65

Chapter 2
MESSAGES AND WARNINGS FUNCTION
I - DISPLAY
Long messages are displayed in two stages in zones "a" and "b". Sequence 1
(called SEQ1) is displayed followed by sequence 2 (called SEQ2).
The time for which the messages are displayed depends on their appearance
priority.
II - PRIORITY LEVELS
Three display priorities are defined for warnings on the control panel:
• P0: Warning which cannot be acknowledged by the driver, displayed until the
fault disappears or the ignition is switched off,
• P1: Warning which can be acknowledged by the driver, displayed until the fault
disappears or the ignition is switched off or by pressing one of the buttons on
the control panel,
• P2: Timed warning, displayed until the fault disappears or the ignition is
switched off or the end of the 6 second timer or by pressing one of the buttons
on the control panel. This degree of priority is only valid if the associated
warning is unique.
66
b
a

Chapter 2
III - WARNINGS FROM WIRE INFORMATION
TYPE OF
WARNING
SEQ ASSOCIATED MESSAGE
LED
PRIORITY;
BUZZER
APPEARANCE
CONDITIONS
ZONE "a" ZONE "b"
Brake fluid /
hydraulic level
warning
1
2
TOP_UP BRAKE_FLUID P1;V8;D3
single
sound
+ig on* (V≥0)
AND fluid level
low
Oil pressure
warning
1
2
STOP
OIL_PRESSURE LOW
P1;V9;D3*
repetitive
sound
+ig on* AND Oil
pressure low
Brake
distributor fault
WARNING BRAKE_FAULT P1;V8;D3
single
sound
+ig on* AND
braking system
faulty
Passenger's
AIRBAG
deactivated
P1;V11;D3
single
sound
+ig on* (V≥0)
AND
passenger's
airbag deact-
ivated by key
Parking brake
on
PARKING BRAKE P1;V8;D3
repetitive
sound
10s max
+ig on* AND
parking brake on
AND
V> 10 Km/h
Coolant level
warning
(DW10 engine
only)
TOP_UP WATER_LEVEL P1;D3
single
sound
+ig on* AND
coolant level low
Low fuel WARNING LOW_FUEL P2;V17 +ig on* AND
low level
reached
Front airbag
fault
P1;V11;D3*
single
sound
+acc/+ig on*
AND airbag fault
Side airbag
fault
P1;V10;D3*
single
sound
+acc/+ig on*
AND airbag fault
ABS fault ABS_FAULT NON_FUNCTION P1;V5;D3
single
sound
+ig on* AND
ABS fault
Maintenance ARRANGE SERVICE P2;V19 +acc AND key
flashing
External
temperature
warning
RISK OF_ICE P2;D3
single
sound
+acc AND
-3°C<T<+3°C
Overspeed
warning
PROG_SPEED XXX_KM/H P2;D2a
single
V≥130 Km/h
(programmable)
* Engine running or not
67

Chapter 2
IV - WARNINGS FROM THE VAN FRAMES
TYPE OF
WARNING
SEQ ASSOCIATED MESSAGE
LED
PRIORITY;
NOISE
APPEARANCE
CONDITIONS
ZONE" a" ZONE" b"
Coolant
temperature
warning
1
2
STOP
ENGINE
TEMPER-
ATURE
P1;V18;D3
(repetitive
sound)
+acc/+ig on* AND
T°≥118°C
Battery charging
fault
1
2
BATTERY FAULT P1;V7;D3* +acc/+ig on*/
+cranking AND
+EXC≤+BAT-2.5V
Boot open BOOT OPEN P1;D3* Boot open
AND +acc/+ig on*
Rear RH door
open
RR RH DOOR OPEN P1;D3*
Rear LH door
open
RR LH DOOR OPEN P1;D3*
Bonnet open BONNET OPEN P1;D3*
Front RH door
open
FT RH DOOR OPEN P1;D3*
Front LH door
open
FT LH DOOR OPEN P1;D3*
Engine
immobiliser
system fault
1
2
ENGINE
IMMOBILISER
FAULT P1 +ig on/+cranking
AND system faulty
HF plip battery
worn
CHANGE
REMOTE
BATTERY
CONTROL
P1 +acc/+ig on* AND
battery low
Impact sensor 1
2
RE-ARM
INERTIA SENSOR
P0 +acc/+ig on AND
impact detected
Headlamps left
on reminder
warning
HEADLAMPS LEFT ON P1;V12;D2b
(repetitive
sound
emitted 10
min max)
Headlamps on
AND Driver's door
open (+acc/+ig on
missing)
Key left in ignition
reminder warning
KEY LEFT IN IGNITION P1;D2c
repetitive
Key present
(+acc/ +ig on
missing 2s) AND
Driver's door open
Overspeed
warning active
1
2
WARNING
SPEED
ACTIVE P1 Overspeed
activation in on-
board ECU
Overspeed
warning inactive
1
2
WARNING
SPEED
INACTIVE P1 Overspeed
deactivation in on-
board ECU
"Economy mode"
active
ECONOMY
MODE
ACTIVE P1 The engine does
not run for 30 mins
• engine running or not
68

Chapter 2
69

Chapter 3
INSTRUMENTATION FUNCTION
I - COOLANT TEMPERATURE GAUGE AND WARNING FUNCTION
A - GENERAL
Table of correspondence between Coolant temperature / zone illuminated:
ZONE a b c d e f g
TEMPERATURE °C FIXED T≥ 60 T≥ 75 T≥ 100 T≥ 110 T≥ 115 Warn-
ing
70
g
f
e
d
c
b
a

Chapter 3
B - LAYOUTS
1 - EW7J4, DW10TD and TU5JPL4 engines
COMPONENTS
BSI Built-in systems interface
0004 Control panel (LEDs + microprocessor)
1220 Temperature sensor
1320 Engine management ECU
Signal type:
1 - Current depending on temperature.
2 - Square signal (PWM) for the temperature and All or nothing for the
warning.
3 - VAN frame containing the temperature and possibly the warning
information.
71
1 3
2
1220
1320
BSI
0004

Chapter 3
2 - TU5JPL3 engine without air conditioning
COMPONENTS
4025 Temperature sensor + coolant thermoswitch
Signal type:
4 - Current depending on temperature.
All or nothing signal (possible warning).
5 - VAN frame containing the temperature and possibly the warning
information.
72
5
4
4025
BSI
0004

Chapter 3
3 - TU5JPL3 engine with air conditioning
COMPONENTS
1220 Temperature sensor
8010 Coolant temperature housing
Signal type:
6 - Current depending on temperature
7 - Current depending on temperature
8 - All or nothing signal (warning)
9 - VAN frame containing the temperature information
73
8
6
1220
BSI
0004
1220
8010
7
9

Chapter 3
C - OPERATING MODES
1 - Operating phases
Nominal operation: see layouts and correspondence table.
• DW10TD, EW7J4 and TU5JPL4 engines:
The engine coolant temperature sensor (variable resistor) is connected to
the engine management ECU. This converts the signal from the sensor
into a variable frequency signal and sends it to the BSI. The engine
management ECU also transmits the warning signal to the BSI.
The BSI encodes this information in a VAN frame to be sent to the control
panel.
The coolant temperature gauge illuminates the corresponding temperature
segments.
• TU5JPL3 engine
The temperature sensor supplies its current directly to the BSI. In AIR
CONDITIONING mode, the temperature warning is given by an engine
coolant temperature management unit.
2 - Specific operating cases
• Overheating warning
The BSI encodes a sound and a warning message in the VAN frame in
addition to the temperature.
The 6 zones and the warning LED "g" are illuminated, a "warning beep"
type sound is emitted repeatedly and the following message is displayed
"STOP ENGINE TEMPERATURE".
• Downgraded mode
If the temperature sensor develops a fault, the BSI places a specific
temperature code value in the VAN frame.
In the event of an invalid value, the control panel only illuminates zone
"a".
74

Chapter 3
II - FUEL LEVEL GAUGE FUNCTION
A - GENERAL
The following table gives the amount of fuel remaining as a function of the
segment illuminated on the gauge:
⇒ petrol vehicle
ZONE h V17: WARNING j k l
LITRES 0 ≤ V V< 6 6 ≤ V 12.5 ≤ V 18.5 ≤ V
ZONE m n p q r
LITRES 24.5 ≤ V 30.5 ≤ V 36.5 ≤ V 42.5 ≤ V 49 ≤ V
⇒ diesel vehicle
ZONE h V17: WARNING j k l
LITRES 0 ≤ V V< 5 6.5 ≤ V 13.5 ≤ V 20 ≤ V
ZONE m n p q r
LITRES 26.5 ≤ V 33.5 ≤ V 40 ≤ V 46.5 ≤ V 53.5 ≤ V
75
r
q
p
n
m
l
k
j
V17
h

Chapter 3
B - LAYOUT
COMPONENTS
4315 Fuel sender
Signal type:
10 - Current depending on level of fuel in the tank
11 - Variable frequency signal depending on fuel flow
12 - Low fuel information signal
13 - VAN frame containing the gross fuel level given by the sender, the
fuel level calculated by the control panel and the low fuel information
14 - VAN frames containing the vehicle consumption information
76
11
10
4315
13
BSI
1320
12
0004
14

Chapter 3
C - OPERATING MODES
1 - Operating phases
• When the ignition is switched on.
The control panel compares the last fuel level displayed with the level
indicated by the fuel sender (variable resistor fitted with a float).
In the event of a significant difference, the gross level information is
displayed otherwise the last fuel level displayed is given.
• When driving.
The fuel sender is no longer used.
The engine management ECU supplies the fuel flow information to the
BSI.
The BSI calculates the vehicle's fuel consumption and encodes this
information in a VAN frame.
The control panel takes this consumption information into account in order
to calculate the fuel level. Finally, it transmits this level to the BSI via the
VAN.
2 - Specific operating cases
• Low fuel warning
From a certain sender value, the control panel transmits the low fuel
information to the BSI via the VAN in addition to the fuel level with the aim
of warning the engine management ECU.
In addition, it displays the warning message "WARNING LOW FUEL". LED
V17 is illuminated.
Note: The fuel capacity can be programmed depending on the vehicle
engine (petrol or diesel).
77

Chapter 3
III - SPEEDOMETER FUNCTION
A - GENERAL
The instantaneous speed of the vehicle is displayed on the digital displays of
the instrumentation screen.
The driver can access the choice of measurement units (KM/H or MILES). The
units are changed using the menu of the multifunction screen (refer to the
Clock/Date/Temperature function). The units selected by the driver are stored
and recalled the next time the ignition is switched on.
B - LAYOUT
COMPONENTS
1620 Vehicle speed sensor
Signal type:
15 - variable frequency signal proportional to the speed of the front wheels.
16 - VAN frame containing the instantaneous speed information.
78
16
BSI1620
15
0004

Chapter 3
C - OPERATING MODE
1 - Operating phase
Nominal operation: see layout
The speed sensor (located on the gearbox) supplies the BSI with a
variable frequency signal.
The BSI calculates the instantaneous speed of the vehicle and encodes it
in a VAN frame.
The control panel takes this information from the VAN network and
displays it.
Specific operating cases
2 - Overspeed warning
The driver can access the choice of overspeed limit and does this using
the menu of the multifunction screen on the control panel.
When the vehicle reaches this speed, the multifunction screen on the
control panel displays the message: "PROG_SPEED XXX_KM/H". A two
tone sound is emitted.
Note: this function is deactivated by default.
79

Chapter 3
IV - MILEOMETER FUNCTION
A - GENERAL
Role: mileometer
The mileometer consists of two digital displays:
• the main mileometer,
• the tripometer.
B - LAYOUT
Refer to the speedometer layout.
C - OPERATING MODE
The BSI calculates the total distance travelled since the vehicle was first used
from a signal supplied by the speed sensor. It then encodes the value in a
VAN frame and sends it to the control panel.
The main mileometer displays the total distance travelled. The control panel
calculates the distance travelled by the vehicle since the last time the
tripometer was reset and displays this on the tripometer.
Note: The tripometer is reset when the ignition is on by pressing the button
at the bottom left of the control panel (RESET).
D - SAVING THE DISTANCE TRAVELLED
The distance travelled is memorised in the control panel.
When the ignition is switched on, the BSI reads the distance memorised in the
control panel and compares it with its own stored mileage. The BSI and the
control panel store the largest of the two figures.
IMPORTANT:it is forbidden to perform diagnostics by substituting parts!
80

Chapter 3
V - MAINTENANCE INDICATOR FUNCTION
A - GENERAL
1 - Role
The aim of the maintenance indicator is to improve the service to the
customer by automatically showing when the next servicing operation is
due.
Interval between maintenance operations.
Engine Usage mode frequency of maintenance
operations*
Petrol Normal 20000 Km or 12500 miles or 1 year
Severe 15200 Km or 10000 miles or 1 year
Diesel HDI Normal 20000 Km or 12500 miles or 1 year
* The frequency of maintenance operations (in distance or time) can be
programmed by the diagnostic tool.
81

Chapter 3
2 - Display
Zone "h": maintenance indicator.
Every time the engine is started, the distance remaining is displayed on
the mileometer. LED V19 either illuminates or not.
Service interval
>2000 Km
Service interval
<2000 Km
Service interval
exceeded
Display 0 - 2s More 0 - 5s More 0 - 5s More
Mileometer and
tripometer X X X
Distance remaining
or exceeded
X X X
Key (LED V19) X X X (flashing) X
Message X X X X X
Note: The message can be acknowledged by the driver or disappears
itself 12 seconds after LED V19 starts flashing.
B - LAYOUT
Refer to the speedometer layout.
82
h
V19

Chapter 3
C - OPERATING MODES
1 - Nominal mode
The BSI calculates the total distance travelled from the signal supplied by
the speed sensor. It then encodes the value in a VAN frame and sends it
to the control panel.
The control panel calculates the distance remaining to be travelled before
the next service using the following parameters:
• the maintenance frequency stored in the control panel (this is
decremented as miles are driven),
• the time elapsed (incrementation of the number of days).
As soon as one of these parameters (time or remaining miles) becomes
due, the multifunction screen indicates that the servicing date has been
exceeded (LED V19 flashes, remains illuminates and the message
remains displayed).
2 - Configuring the usage mode
The following procedure is used to select the Severe or Normal usage
mode of the vehicle.
1 - Press the Tripometer reset button.
2 - Switch on the ignition.
3 - Release the button within 10 seconds.
The instrumentation screen displays a key (LED V19) and the current
configuration of the vehicle, directly displaying the frequency of
maintenance operations.
Pressing the reset button briefly switches between the configuration
modes.
4 - Press for 10 seconds to validate.
The procedure exits automatically.
5 - Switch off the ignition.
83

Chapter 3
3 - Initialising the maintenance indicator
The initialisation procedure is used to assign a new mileage value and a
new time value to the system.
The procedure is as follows:
1 - Press the Tripometer reset button.
The display shows a key (LED V19) and a 10 second counter starts to
count down.
3 - Keep the Reset button pressed during these 10 seconds.
The key disappears and the reading "=0" appears. The operation is
validated.
4 - Switch off the ignition to quit initialisation.
84

Chapter 3
VI - CLOCK / DATE / TEMPERATURE FUNCTION
A - GENERAL
When these parameters are lost (i.e. after disconnecting the battery), the time
displayed starts at "12: 00 PM" and the date displayed by default is 01 - 01 -
99. Each item (time and/or date) flashes until adjustment mode has been
selected. By default, the language is French and the units are degrees Celsius
and KM/H.
B - ADJUSTING SCREEN B
Buttons "u" and "v" located on the right hand side of the control panel are used
to do this.
When the display is normal (no warnings, etc), pressing button "u" briefly
changes the display to the date.
Pressing this button at any time for a long period returns to adjustment mode.
Every time this button is pressed again briefly, the parameter to be adjusted
changes until adjustment mode is exited.
Conditions for exiting adjustment mode:
• Button not pressed for 6 seconds,
• Pressing button "u" for a long time.
85
v
u

Chapter 3
Parameters (in the scrolling order):
Parameters Description of the
parameter to be displayed
Value of the
parameter to be
displayed
Languages FRANCAIS; ENGLISH;
DEUTSCH; ITALIANO;
ESPANOL; etc.
Hours (tens then units): 0 (or 12
AM depending on configuration)
HOUR 12 AM (or 12 for 24H
configuration)
Minutes (tens then units): 00 MINUTES 01
Year (tens then units) 1998
(parameter: 98)
YEAR 2000
Month (tens then units): 01 MONTH 01
Day (tens then units): 01 DAY 01
Time format (12h / 24h) 12H/24H 12H (or 24H)
Temperature units (°C / °F) °C/°F °C (or °F)
Speedometer and mileometer
units (KM/H - MPH)
KM/H-MPH KM/H (or MPH)
Exit adjustment mode
After the language has been selected, the HOUR, MINUTES, YEAR, MONTH
and DAY parameters will be displayed in the configured language.
The possible languages are:
French, Spanish, Italian,
English, Portuguese, German,
Dutch.
Every time button "v" is pressed, the parameter to be adjusted is incremented.
Note: For the YEAR parameter, switching from 1900 to 2000 will occur
automatically for all parameter values less than 99.
86

Chapter 3
87

Chapter 4
LIGHTING FUNCTION
I - RHEOSTAT FUNCTION
A - GENERAL
The + and - rheostat buttons are used to vary the brightness level of the
lighting of the displays, except that of the warning LEDs.
B - LAYOUT
COMPONENTS
8080 Air conditioning compressor
8410 Radio
a "Night driving" push button
Signal type:
1 - VAN frames containing the brightness status of the LEDs
88
1
BSI
8410 8080
11
0004
a

Chapter 4
C - OPERATING MODES
1 - Principle
The control panel encodes the brightness level in a VAN frame to be sent
to the BSI.
The BSI transmits the information to the air conditioning and radio ECUs
(RD2 only).
2 - downgraded mode
If one of the buttons is jammed, an intermediate brightness level is used
by default.
II - NIGHT DRIVING FUNCTION
A - GENERAL
This function is used to extinguish all the LEDs on the control panel as well as
the air conditioning display which generate light which may be tiring at night.
Only the vehicle speed remains illuminated.
Warnings automatically cause the corresponding LED to illuminate.
B - LAYOUT
Refer to the rheostat function layout.
C - OPERATING MODES
• PRINCIPLE
The control panel encodes the status of the night driving function in a VAN
frame to be sent to the BSI.
The BSI transmits the information to all the ECUs involved.
• ACTIVATION
This function is activated using button "a".
89

Chapter 4
• DEACTIVATION
If an event occurs, this causes the zone in question to be re-illuminated in
accordance with the table below:
EVENT DISPLAY DURATION
Brief press on one of the 4
buttons (user request)
All information on the
control panel and
multifunction screen
Until button "a" is pressed
again
Engine overheating Coolant temperature
gauge
event duration
Fuel level < 15 litres Fuel level gauge Until the ignition is
switched off or fuel added
Warning Screen message
without displaying
the time,
temperature, etc
Until the ignition is
switched off or end of
message timer (see
message function)
Action on radio Screen display Timed for 6 seconds after
last user action
Action on on-board ECU Screen display Timed for 6 seconds after
last user action
90

Chapter 4
91

Chapter 5
ON-BOARD ECU FUNCTION
I - GENERAL
A - ROLE
The on-board ECU controls the display of the following information:
• Instantaneous consumption,
• Average consumption,
• Range,
• Average speed,
• Total distance travelled,
• Overspeed warning.
B - DISPLAY
Pressing the on-board ECU button briefly (located on the end of the stalk on
the steering wheel) is used to switch to the next display.
The display is in digital form combined with a combination of icons on the
multifunction screen to specify the type of information displayed.
ICONS DESCRIPTION
a vehicle coming from a round sign showing the last time the
parameters were reset for the journey parameters (average speed,
average consumption)
a vehicle going towards a petrol pump for the range
a vehicle on its own for the instantaneous consumption
92

Chapter 5
II - LAYOUT
COMPONENTS
1620 Speed sensor
4315 Fuel sender
7205 On-board ECU scroll switch
Signal type:
1 - variable frequency signal proportional to the speed of the front wheels
2 - variable frequency signal depending on fuel flow
3 - all or nothing signal
4 - current depending on gross fuel level
5 - VAN frames containing information from the on-board ECU for display
6 - VAN frame containing the fuel level.
93
BSI
1620
1
2
4315
1320
3
4
7205
56
0004

Chapter 5
III - OPERATING MODES
Nominal operation:
The BSI calculates the "range" with the fuel consumption and the amount of fuel
remaining supplied by the control panel.
After acquiring the signal from the speed sensor, the BSI calculates the following
parameters:
• "journey distance" since last reset,
• "average journey consumption" since last reset,
• "instantaneous consumption" with fuel flow information supplied by the engine
management ECU,
• "average journey speed" since last reset,
• the BSI encodes this information in VAN frames to be sent to the control panel.
The multifunction screen displays them.
Reset:
Pressing the on-board ECU switch for a long time on the steering wheel stalk
resets the journey counters.
The BSI encodes this status on a VAN frame to be sent to the multifunction screen
of the control panel.
94

Chapter 5
95

Chapter 6
ELECTRICITY
I - LAYOUT DIAGRAM
A - COOLANT TEMPERATURE WARNING AND GAUGE - TU5JP
PFM004P
96

Chapter 6
B - COOLANT TEMPERATURE WARNING AND GAUGE - DW10
PFM005P
97

Chapter 6
C - PETROL LEVEL GAUGE - EW7
PFM006P
98

Chapter 6
II - PARTS LIST
BB00 - Battery
0005 - Wiper stalk
1020 - Alternator
99

Chapter 6
8410 - Radio
100

Chapter 6
101

PART 5
XSARA
102

103

Chapter 1
GENERAL
I - FOREWORD
The control panel is normal in appearance but several of its functions are
multiplexed (mileometer, etc). Refer to the tables corresponding to the layout.
104

Chapter 1
II - LAYOUT
The control panel receives information along the wires and by communicating with
the ECUs via the VAN network.
COMPONENTS
A Pressure switch
Oil level sensor
Controls at the steering wheel
Central airbag ECUs
Side airbag ECUs
Presence of water sensor
Brake pad sensor
Seatbelt contact
Oil temperature sensor
Oil level sensor
Fuel sender
Brake fluid sender
Parking brake contact
ABS valve block
Automatic gearbox ECU
105
BSI
32
0004
A
1

Chapter 1
CONNECTIONS
N° Signal Type
1 Low oil pressure All or nothing
Low coolant level All or nothing
Sidelamps status All or nothing
Dipped beam status All or nothing
Front airbag fault All or nothing
Side airbag fault All or nothing
Front and rear fog lamps control All or nothing
Water in diesel* All or nothing
Brake pad wear / Stop lamps All or nothing (2 inputs)
Presence of driver's seatbelt All or nothing
LPG level analogue
Brake fluid hydraulic level All or nothing
Oil level Analogue
Parking brake status All or nothing
ABS fault LED active
Electronic brakeforce distribution fault All or nothing
Auto gearbox selector position information Square
2 Low fuel VAN
Filtered fuel level VAN
Gross fuel level VAN
ABS fault VAN
Auto gearbox fault VAN
Brake fluid fault VAN
Oil temperature VAN
Parking brake VAN
Dipped beam VAN
Saved journey distance VAN
Low oil pressure VAN
Electronic brakeforce distributor fault VAN
Control panel brightness level VAN
106

Chapter 1
CONNECTIONS
N° Signal Type
3 Engine speed information VAN
Vehicle speed information VAN
Distance information VAN
Coolant temperature information VAN
Factory/customer mode VAN
Ignition key position VAN
Economy mode VAN
Engine running VAN
Coolant temperature warning VAN
Door open, engine running VAN
EOBD/Engine management fault VAN
Battery charge fault VAN
Electronic engine immobiliser system fault VAN
Illumination of indicator LEDs VAN
Lamps on reminder warning VAN
Key in ignition reminder warning VAN
Overspeed warning VAN
Day/night status VAN
Brightness level VAN
Set to stand-by in 5 seconds VAN
Activation of control panel VAN
Pre-heating information VAN
Auto gearbox safety warning VAN
Total mileage VAN
Heated rear screen activated VAN
* depending on equipment
107

Chapter 2
WARNING FUNCTION
I - LIST OF LEDS
LED FUNCTION
V1 Rear fog lamp
V2 Front fog lamp
V3 Brake pad wear indicator*
V4 Coolant temperature warning
V5 Engine management diagnostic
V6 Coolant level
V7 Seatbelt
V8 Diesel pre-heating
V9 Transponder fault
V10 Dipped beam
V11 Main beam
V12 Water in diesel
V13 Low fuel warning
V14 ABS
V15 Side airbag
V16 Front airbag
V17 Rear screen
V18 Brake fault
V19 Battery charge
V20 Stop
V21 Oil pressure
V22 Parking brake
V23 Left hand indicator
V24 Doors open
V25 Right hand indicator
V26 LPG operation
V27 Auto gearbox position display
* depending on equipment
Note 1: All possible LEDs are represented on the control panel above but this
model of control panel does not actually exist.
Note 2: The LEDs cannot be replaced. If a bulb blows, replace the control panel.
108
V6/V26 V22V18 V21 V12V19
V10
V20
V14
V16V17
V13
V11
V7
V15
V3
V4
V5
V9V8
V2
V24V27V1

Chapter 2
II - INTEGRATED BUZZER
The buzzer integrated into the control panel produces 4 types of sound:
• "Relay clicking" type sound N1,
• "Intermittent" type sound N2,
• "Continuous" type sound N3,
• "Intermittent sound at twice the speed of N2" type sound N4.
III - WARNING APPEARANCE CONDITIONS
A - WARNINGS FROM WIRE INFORMATION
LED; NOISE TYPE OF WARNING APPEARANCE CONDITIONS
N3 only Low oil level +acc/+ig on
key Maintenance key +acc AND service imminent
V6 Coolant level warning +ig on* AND coolant level low
V13 Low fuel +ig on* AND
low fuel reached
V15 Side airbag fault +ig on* AND airbag fault
V16 Front airbag fault +ig on* AND airbag fault
V16 Passenger's AIRBAG
deactivated
+ig on* AND
passenger's airbag deactivated
V14; N3 only ABS fault +ig on* AND ABS fault
V18; N3 only Brake fluid / hydraulic
level warning
+ig on* AND fluid level low
V18; N3 only ABS fault +ig on* AND ABS fault
V18; N3 only Electronic brakeforce
distributor fault
+ig on* AND braking system faulty
V20; N4 Low oil pressure
warning
+ig on* AND oil pressure low
V21; N4 Low oil pressure
warning
+ig on* AND oil pressure low
V22; N3 Parking brake +ig on* AND parking brake on AND
V> 10 Km/h
109

Chapter 2
B - WARNINGS FROM VAN FRAMES
LED; NOISE TYPE OF WARNING APPEARANCE CONDITIONS
N2 Lamps on reminder
warning
Headlamps on AND driver's door
open (+acc/+ig on missing)
N2 Key in ignition reminder
warning
Key present
(+acc/+ig on missing) AND driver's
door open
N2 Auto gearbox position
warning
Key in position S or not inserted AND
driver's door open AND
lever in position other than P
N3 Overspeed warning V≥130 Km/h
(programmable in the BSI)
V4 Coolant temperature
warning
+ig on* AND
T° too high
V5 Engine management /
EOBD fault
+ig on AND
engine ECU fault
V8 Diesel pre-heating +ig on AND pre-heating in progress
V9; N3 Unknown transponder
fault
+ig on/+cranking AND
faulty system (unknown transponder)
V17 Heated rear screen +ig on*/+cranking AND
heated rear screen activated
V19; N3 Battery charging fault +ig on*
AND
+EXC≤+BAT-2.5V
V20 flashing
N4 active for 10s
Coolant temperature
warning
+acc/+ig on* AND
T° too high
V24; N3* RRH door open 1 door open
V24; N3* RLH door open AND
V24; N3* FRH door open +acc/+ig on*
V24; N3* FLH door open
V27 Auto g/b position
indicator
+ig on*/+cranking
* Engine running or not
110

Chapter 2
111

Chapter 3
INSTRUMENTATION FUNCTION
When the ignition is switched on, the digital display shows:
• for 2 seconds: the maintenance indicator
• for 5 seconds maximum: the oil level gauge
• and finally: the mileometer (until the ignition is switched off)
I - MAINTENANCE INDICATOR
A - GENERAL
1 - Interval between maintenance operations
Engine Usage mode* frequency of maintenance
operations
Petrol/diesel HDI Normal 20000 Km or 12500 miles or 1 year
Customised Multiples of 500 Km or 1 month
Diesel (excl. HDI) Normal 15000 Km or 10000 miles or 1 year
Customised Multiples of 500 Km or 1 month
2 - Case of more than 2000 km to service
• The maintenance indicator shows the distance remaining for 2
seconds.
• The "key" symbol illuminates for 2 seconds then disappears.
3 - Case of less than 2000 km to service
• The maintenance indicator shows the distance remaining for 5
seconds.
• The "key" symbol illuminates for 5 seconds then disappears.
4 - Case of interval exceeded
• The maintenance indicator shows a zero distance remaining.
• The "key" symbol flashes for 5 seconds then disappears.
112

Chapter 3
B - FUNCTIONAL DESCRIPTION
The BSI calculates the total distance driven from the signal supplied by the
speed sensor. It then sends this to the control panel via the VAN network.
The control panel calculates the distance remaining to be travelled before the
next service using:
• the maintenance frequency stored in the control panel (this is
decremented as miles are driven),
• the time elapsed (incrementation of the number of days).
As soon as one of these parameters (time or remaining miles) becomes due,
the multifunction screen indicates that the servicing date has been exceeded
(the key flashes).
Note 1: When the time reaches one year, the maintenance indicator behaves
as if the distance remaining were zero (the "key" symbol flashes).
Note 2: If the battery is disconnected, the time is no longer incremented.
C - INITIALISING THE MAINTENANCE INDICATOR
The procedure is as follows:
1 - Press the left hand button (Tripometer reset button).
The display shows a key and a 10 second counter starts to count down to 0.
3 - Keep the button pressed until 0 is reached then release it.
The maintenance indicator displays the mileage to be travelled before the next
service (it is equal to the maintenance frequency). The key disappears.
4 - Switch off the ignition to quit initialisation.
113

Chapter 3
II - OIL LEVEL GAUGE
General
The amount of oil left in the engine is displayed in accordance with the graphics
below for a maximum of 5 seconds:
The number of squares illuminated is proportional to the potential difference at the
terminals of the oil level sensor:
SCREEN COMMENT DISPLAY
CORRESPONDING
POTENTIAL
DIFFERENCE
1 Max level 6 squares illuminated ∆U=90mV
2 Min level 1 square illuminated ∆U=440mV
3 Level < min No squares illuminated.
6 lines flash, warning
beep N3, word MIN
∆U>440mV
4 Oil level sensor short
circuited or
disconnected
Screen flashes for 5
seconds
Functional description
• The control panel sends a current of 195 mA (for approximately 2 seconds) into
the oil level sensor.
• The control panel measures the potential difference (noted ∆U) at the sensor
terminals.
• The control panel converts this potential difference into a number of squares to
be displayed.
114
MIN MAX MIN MAX
MIN MAX MIN MAX
1 2
3
4

Chapter 3
III - MILEOMETER
A - GENERAL
The control panel has two mileometer lines
• 2 tripometers called a and b (zone "b").
− switch from a to b by briefly pressing the left hand button,
− reset them by pressing and holding the left hand button.
• 1 main mileometer (zone "a").
Screen
B - FUNCTIONAL DESCRIPTION
The BSI acquires the signal supplied by the speed sensor located on the
gearbox. It then calculates the total number of miles and sends it to the control
panel via the VAN network.
The control panel displays this mileage value on the main mileometer. From
this value, it increments the tripometers a and b.
Note: On vehicles fitted with control panels in miles, the control panel
converts the kilometres into miles.
C - SAVING THE DISTANCE TRAVELLED
The distance travelled is memorised in the control panel.
When the ignition is switched on, the BSI reads the distance memorised in the
control panel and compares it with its own stored mileage. The BSI and the
control panel store the largest of the two figures.
IMPORTANT:it is forbidden to perform diagnostics by substituting parts!
(storing of highest mileage)
115
b
a

Chapter 4
REPAIRING THE CONTROL PANEL
I - READING AND ERASING FAULTS
Using the diagnostic tool, the following points can be read:
• identification of the PSA N° and the development index of the control panel,
• communications faults on the multiplexing,
• wire and multiplexed input faults on the control panel.
II - PROGRAMMING THE MAINTENANCE TYPE
Using the diagnostic tool, the following points can be programmed in the
maintenance indicator:
• normal or severe configuration,
• customisation of the maintenance frequency as a distance (multiplies of 500
km),
• customisation of the maintenance frequency as a duration (multiples of 1
month),
• activation/deactivation of the maintenance indicator.
III - ACTUATOR TEST
Using the diagnostic tool, the following functions can be tested:
• mileometer (main mileometer and tripometer),
• speedometer,
• rev counter,
• fuel sender,
• coolant temperature gauge,
• oil temperature gauge,
• automatic gearbox position indicator,
• oil level,
• LEDs and symbols,
• the buzzer,
• change in lighting.
116

Chapter 4
IV - READING THE FOLLOWING PARAMETERS
Control panel:
• viewing the activation status of certain LEDs (ABS, automatic gearbox,
AIRBAG),
• viewing the maintenance type (missing/present, classic/developed,
normal/severe).
• fuel sender and coolant temperature sender table.
All or nothing and other inputs on the control panel:
• oil min level/min pressure warning,
• oil temperature,
• side/front airbag LED,
• coolant level warning,
• driver's seatbelt,
• parking brake,
• Electronic Brakeforce Distributor fault/ABS fault,
• automatic gearbox fault,
• brake fluid level,
• fuel level,
• low fuel information,
• brightness level,
• dipped beam,
• change in status of all or nothing inputs
Control panel buttons:
• rheostat button,
• tripometer reset button.
117

PART 6
VISIBILITY
118

119

Chapter 1
GENERAL
I - FOREWORD
The Built-in Systems Interface controls the visibility function:
FUNCTION XSARA
PICASSO
XSARA
Control of the windscreen wipers linked to the vehicle
speed without rain sensor
X
Windscreen wipers with rain sensor *
Intermittent wipe mode of the rear wiper linked to vehicle
speed and windscreen wiper mode
X
Management of wiper parked positions X X
Protection of wiper motors X X
De-icing of heated rear screen X X
Timer for headlamp washers *
* = Depending on equipment
120

Chapter 1
II - GENERAL LAYOUT
COMPONENTS
BSI Built-in Systems Interface.
8080 Automatic climate control (RFTA) on XSARA PICASSO only.
A Heated rear screen switch (without RFTA)
Windscreen wiper motor.
Rear screen wiper.
Rain sensor (XSARA only)
B Windscreen wiper motor
Rear wiper motor
De-icing LEDs of the heated rear screen and door mirrors (without RFTA
climate control).
Windscreen and rear screen washer
Headlamp washer (XSARA only)
Heated rear screen and door mirrors.
121
BSI
8080
A B
4 3
21

Chapter 1
CONNECTIONS
n° Signal Type
1 Heated rear screen activation request (without RFTA) All or nothing
Parked position information of windscreen wiper motor All or nothing
Parked position information of rear wiper motor All or nothing
Windscreen washer request All or nothing
Rear screen washer request All or nothing
Windscreen wiper intermittent wipe request All or nothing
Windscreen wiper slow speed request All or nothing
Windscreen wiper high speed request All or nothing
Rear wiper request All or nothing
Supply (+ accessories) Supply
Rain detection information (XSARA only) Analogue
2 Windscreen wiper motor high speed control All or nothing
Windscreen wiper motor slow speed control All or nothing
Rear wiper motor control All or nothing
De-icing and heated door mirrors LED control (except RFTA
climate control).
All or nothing
Accessories position output for steering wheel stalk,
windscreen and rear screen washer
All or nothing
3 Heated rear screen activation request (RFTA only) VAN
4 Heated rear screen functional status (RFTA only) VAN
122

Chapter 1
123

Chapter 2
OPERATING PRINCIPLE
I - WINDSCREEN WIPER FUNCTION
A - BASIC FUNCTIONS
Function:
The wiper stalk for the windscreen wiper function provides the driver with the
choice between several control options:
CONTROL DESCRIPTION
Windscreen wash/wipe control Used to wipe the screen continuously
when the screen washer is activated.
Windscreen wiper one touch control Used to activate the wipers at slow
wipe speed. If the request is
maintained, the wipers will wipe
continuously at slow speed.
Intermittent / automatic wiper control Without rain sensor: used to wipe the
screen at regular intervals, at slow
speed. A single wipe cycle is
controlled between two parked
positions. This timer is linked to the
vehicle speed on the XSARA
PICASSO
With rain sensor: used to select
automatic mode on the XSARA
Slow speed wiper control The wiper control is activated
continuously at slow speed
High speed wiper control The wiper control is activated
continuously at high speed
Note: Windscreen wiper requests are only taken into consideration by the
BSI when the ignition is on.
124

Chapter 2
B - CONTROLLING THE WINDSCREEN WIPERS LINKED TO VEHICLE SPEED
WITHOUT RAIN SENSOR
This function contains 2 sub-functions which relate only to the XSARA
PICASSO:
FUNCTION OPERATION
Intermittent mode linked to vehicle
speed
When the windscreen wipers are
operating at intermittent speed, the
vehicle speed information is used to
adjust the parked time between 2
wipe cycles.
Reduction in wipe speed, vehicle
stationary
This function consists of reducing the
wipe speed when the vehicle is
stationary.
If operating at high speed, slow wipe
speed is used.
If operating at slow speed,
intermittent wipe speed is used.
Wipe speed reduction occurs from 16 km/h when decelerating. The initial
speed is returned to upon reaccelerating.
C - WINDSCREEN WIPER WITH RAIN SENSOR
The BSI controls the windscreen wipers depending on the requests from the
rain sensor (in the base of the interior rear view mirror), on the Xsara only. The
ignition must be on and the control initialised. Communications between the
rain sensor and the BSI are by means of a serial link.
IMPORTANT: When washing the vehicle, ensure that the windscreen
wipers or the ignition are off to prevent them being
triggered by the rain sensor.
Note: If the rain sensor is covered, the windscreen wipers will perform an
initialisation wipe cycle.
D - WINDSCREEN WASHER FUNCTION
The windscreen washer pump is not controlled by the BSI. The windscreen
washer control comes directly from the washer pump. The BSI controls a
delayed wipe cycle of the wipers (so as not to wipe when dry). When the driver
stops pressing the washer control, the wipers perform a maximum of 3
complete wipe cycles before stopping.
Note: The washer control is only taken into consideration when the ignition
is on.
125

Chapter 2
II - REAR WIPER FUNCTION
On the Xsara and Xsara Picasso, the BSI controls a standard rear wiper (single
motor).
A - BASIC FUNCTIONS
Function:
The rear wiper function has 3 operating modes:
OPERATING MODE DESCRIPTION
Wash / wipe control Used to wipe the screen continuously
when the rear washer is activated.
Intermittent wipe control Used to wipe the screen at regular
intervals. This timer is linked to vehicle
speed on the XSARA PICASSO.
Wiper control linked to reverse gear Used to wipe the rear screen when
reverse gear is engaged (XSARA
PICASSO).
B - INTERMITTENT REAR WIPER MODE LINKED TO VEHICLE SPEED AND
WINDSCREEN WIPER MODE
Function:
When the rear wiper control is requested, the BSI controls the rear wiper in
intermittent mode. The parked time between 2 wipe cycles depends on the
vehicle speed and the wiping speed of the windscreen wipers (XSARA
PICASSO only).
C - REAR WASHER FUNCTION
Function:
The rear washer pump is not controlled by the BSI. The rear washer control
controls the washer pump directly and leads to a rear screen wipe request to
the BSI. When the driver stops operating the washer control, the wiper
performs another 3 complete wipe cycles before stopping.
Note: The washer control is only taken into consideration when the ignition
is on.
126

Chapter 2
III - MANAGEMENT OF WIPER PARKED POSITIONS
Function:
CONDITION FUNCTION
Ignition on When the wipers are switched off, all wipe
cycles in progress are completed. The
wipers are systematically returned to the
parked position at slow speed.
When the ignition is switched off The windscreen or rear wipers stop
immediately, regardless of the position of
the wipers and the wiper stalk at the
steering wheel.
When the ignition is switched on If the wipers are not in the parked
position, the BSI controls the wiper
motors at slow speed until the wipers are
in the parked position.
IV - WIPER PROTECTION
Function:
The BSI is used to protect the windscreen and rear wiper motors against
overheating in the event of the wipers being blocked, regardless of the operating
mode requested by the user. The controls are stopped if there has not been a
change in the value of the parked position after a certain time.
V - DE-ICING
Function:
When the engine is running (and alternator charging), to de-ice the heated rear
screen and the door mirrors, depending on vehicle equipment.
To protect the relay, when the voltage exceeds 15 volts, the de-icing request is no
longer taken into account.
127

Chapter 2
VI - HEADLAMP WASHER TIMER
This function exists on the XSARA only.
Function:
When the windscreen washer control is activated and if the dipped beam
headlamps are on, the BSI controls the headlamp washer operating timer.
The dipped beam information is distributed on the Comfort VAN network by the
control panel.
The headlamp washer pump is controlled by earthing a relay outside the BSI.
128

Chapter 2
129

Chapter 3
ELECTRICITY
I - LAYOUT DIAGRAM
PFM007P
130

Chapter 3
II - PARTS LIST
BB00 - Battery
0005 - Wiper stalk
1020 - Alternator
131

Chapter 3
8410 - Radio
132

Chapter 3
133

PART 7
LOCKING / UNLOCKING
134

135

Chapter 1
GENERAL
I - FOREWORD
Control devices:
XSARA PICASSO XSARA
BSI with integrated HF receiver BSI with integrated HF receiver
Declutchable locks on both front doors Declutchable locks on both front
doors
One main key with transponder One main key with transponder
One key with remote control and
transponder
One key with remote control and
transponder
Central locking button on dashboard Door locking buttons
Electric boot opening button (external) One garage key with transponder
(does not open boot nor glovebox) on
XSARA saloon
Unlocking by internal opening control
on 4 doors
Unlocking by internal opening control
on 2 front doors
Deactivation of internal opening of rear
doors by rotary button on door panel
(child safety)
Deactivation of internal opening of
rear doors by rotary button on door
panel (child safety)
Doors open detection contacts Doors open detection contacts
136

Chapter 1
Viewing device:
• "System status LED" for viewing the locked status, ignition off (in the hazard
warning lamps button, on the XSARA PICASSO only),
• use of indicators,
• symbol for viewing the locking status, ignition on (XSARA PICASSO only),
• symbol for viewing the child safety status on the XSARA PICASSO.
Definitions:
• a door is said to be closed if it is closed on the 2nd
notch,
• the door open information is present when the + accessories is on,
• the fuel filler flap is locked with the key,
• a locking rebound consists of locking then unlocking the locks if a locking
request was performed and if one of the doors is open (indicators do not
illuminate),
• no locking buttons on the doors on the XSARA PICASSO.
137

Chapter 1
The BSI controls the locking / unlocking function:
FUNCTION XSARA
PICASSO
XSARA
Locking / unlocking using internal button X
Opening of boot using electric button X
Unlocking in the event of an impact X
Deadlocking using the key X
Deadlocking using the plip X
Rebound function X X
Automatic locking X
Locking / unlocking using the key X X
Locking / unlocking using the plip X X
Protection of lock motors X X
138

Chapter 1
II - GENERAL LAYOUT
COMPONENTS
BSI Built-in Systems Interface with integrated HF receiver
0004 Control panel
6232 High frequency emitter for locking doors.
A Boot opening button
Central locking button
Switches of the 4 doors (door status)
Boot switch
Inertia switch (Xsara Picasso)
Contacts of 2 front locks (key)
Interior opening control of front doors (+ locking buttons on the doors
on the XSARA).
B Locking actuators.
Unlocking actuators.
Deadlocking actuators
Boot opening actuators
Indicators (front, rear, left hand, right hand, side repeaters)
System status LED.
139
BSI
00046232
1
A B
2
3 4

Chapter 1
CONNECTIONS
n° Signal Type
1 Vehicle locking status information (for symbol on the
instrument panel)
VAN
HF plip batteries worn warning VAN
Door open, engine running warning VAN
Door status information VAN
Control of indicators VAN
2Locking / unlocking / deadlocking request by plip Encrypt
ed HF
3Boot opening request All or
nothing
Locking / unlocking request by button All or
nothing
Door status information All or
nothing
Boot opening status information All or
nothing
Impact detection input (Xsara Picasso) All or
nothing
Locking / unlocking request by key All or
nothing
4Locking actuators control All or
nothing
Unlocking actuators control All or
nothing
Deadlocking actuators control All or
nothing
Boot opening actuator control All or
nothing
Indicators control (front, rear, left hand, right hand, side
repeaters)
All or
nothing
System status LED control All or
nothing
140

Chapter 1
141

Chapter 2
OPERATING PRINCIPLE
I - LOCKING / UNLOCKING
A - LOCKING / UNLOCKING USING THE KEY
Function:
This function consists of locking or unlocking the vehicle using the key by
operating the locks of the front doors.
FUNCTION LOCKING UNLOCKING
Action the BSI controls locking the BSI controls unlocking
IF condition locking order through the
front locks
unlocking order through
the front locks
AND condition the vehicle is unlocked the vehicle is locked
AND condition the ignition has been off for
more than 3 seconds
AND condition the doors are closed
(otherwise, rebound occurs)
Display Illumination of indicators and
side repeaters for 2 seconds.
Illumination of system status
LED
Flashing of indicators and
side repeaters for 2
seconds.
Extinguishing of system
status LED
142

Chapter 2
B - LOCKING / UNLOCKING USING THE PLIP
Function:
This function consists of locking or unlocking the vehicle, when the ignition is
off, following an order from the HF remote control (plip).
IF condition locking order from the plip unlocking order from the
plip
AND condition the ignition has been off for
more than 3 seconds
Display Illumination of indicators and
side repeaters for 2 seconds.
Illumination of system status
LED.
Flashing of indicators and
side repeaters for 2
seconds.
status LED.
Note: Two locking / unlocking orders from the HF remote control will only be
performed if there is a minimum of 0.6 seconds between them.
143

Chapter 2
C - LOCKING / UNLOCKING USING THE INTERIOR BUTTON
Function:
This function consists of locking the vehicle following a request from the user
by pressing the locking button located on the dashboard. All the doors and
tailgate/boot will be alternately locked or unlocked every time the button is
pressed.
IF condition locking order from the button unlocking order from the
button
Display Illumination of system status
LED or symbol on control
panel (depending on key
position)
status LED
Display:
• permanent correspondence between the locking status of the doors and
the symbol on the control panel (if the ignition is on).
• flashing of the system status LED (ignition off) .
144

Chapter 2
D - OPENING THE BOOT USING THE ELECTRIC BUTTON
Function:
This function consists of controlling the boot lock actuator by pressing the
electric boot opening control button (located on the boot).
FUNCTION UNLOCKING THE BOOT USING THE BUTTON
Action the BSI controls unlocking of the tailgate, then illuminates
the boot lamp
IF condition unlocking order from the boot button
AND condition the vehicle is unlocked
AND condition the speed has not exceeded 5 km/h since the last time a
door was opened
AND condition the boot is closed
The lock is fitted with a device for opening the boot from the inside, should an
operating fault occur. To do this, insert a rod into the hole at the bottom left of
the lock from inside the boot.
E - REBOUND FUNCTION
Function:
A rebound upon locking consists of locking then unlocking the locks if a locking
request is made and if one of the doors is open (no illumination of indicators).
FUNCTION REBOUND
Action the BSI controls locking, then unlocking of the doors
IF condition a locking request is made (from any source)
AND condition the vehicle is unlocked
AND condition one of the doors is not closed to the 2nd
notch
Display no illumination of indicators (since locking does not
occur)
145

Chapter 2
F - AUTOMATIC RE-LOCKING
Function:
This function consists of preventing the vehicle from being left unlocked due to
negligence.
FUNCTION RE-LOCKING
Action the BSI automatically relocks the vehicle
IF condition no door has been opened within 30 seconds of unlocking
the vehicle.
G - UNLOCKING IN THE EVENT OF AN IMPACT
Function:
This function consists of unlocking the vehicle in the event of an impact. It is
prohibited after locking using the plip or the key.
The impact is detected by an inertia switch mounted on a rigid part of the
vehicle structure (mechanical switch).
FUNCTION UNLOCKING IN THE EVENT OF AN IMPACT
Action the BSI controls unlocking of the doors if an impact is
detected
IF condition the impact detection input is activated
AND condition the vehicle is locked
AND condition the ignition is on
Display change in status of the symbol on the control panel
Note: This function is not totally reliable. It depends on the size and type of
the impact. The fact that unlocking has occurred in the event of an
impact must therefore not be communicated within the system.
146

Chapter 2
H - PROTECTION OF LOCK MOTORS
Function:
To prevent overheating, the BSI protects the lock actuators (doors and boot).
The vehicle is unlocked during the motor protection function.
FUNCTION PROTECTION OF LOCK MOTORS
Action The lock actuators are prevented from operating for 30
seconds
IF condition 10 successive locking/unlocking operations have been
performed in less than 2 minutes
147

Chapter 2
II - DEADLOCKING
KEY
1 Unlocked status 4 Locking
2 Locked status 5 Unlocking
3 Deadlocked status 6 Deadlocking
7 Unlocking
Note: It is not possible to switch from the deadlocked status to the locked status.
A - DEADLOCKING USING THE KEY
Function:
This function consists of deadlocking the vehicle, using the key, after locking it
by operating the front door locks when the ignition is off.
FUNCTION DEADLOCKING USING THE KEY
action the BSI deadlocks the vehicle
IF condition the door lock contact is operated for at least 0.7 seconds
(definable)
AND condition the vehicle has been locked for less than 5 seconds
(definable)
AND condition all the doors are closed
AND condition the ignition is off
Display illumination of indicators for 2 seconds (extinguished for
0.5 s beforehand if they were illuminated)
148
3
4
7 6
5
21

Chapter 2
B - DEADLOCKING USING THE PLIP
Function:
This function consists of deadlocking the vehicle after locking it, when the
ignition is off, following an order from the HF remote control.
FUNCTION DEADLOCKING USING THE PLIP
Action the BSI deadlocks the vehicle
IF condition the locking button on the HF remote control is pressed
AND condition the vehicle has been locked for less than 5 seconds
(definable)
AND condition all the doors are closed
Display illumination of indicators for 2 seconds (extinguished for
0.5 seconds beforehand if they were illuminated)
149

PART 8
AUTOMATIC CLIMATE CONTROL
XSARA PICASSO
150

151

Chapter 1
GENERAL
I - FOREWORD
The automatic climate control system allows the user to control the operation of
the air conditioning-heating system automatically, by adjusting:
• the air flow (blower motor),
• the air temperature (mixing),
• the distribution of air in the passenger compartment (distribution),
• the air inlet (recycling),
• the air conditioning function.
The desired temperature is obtained by setting the mixing flap, controlled by a
stepper motor, to the correct position.
The heating is provided by a heater matrix in the engine coolant circuit.
The cold air is produced by a traditional cooling system through an evaporator.
The air flow is provided by a blower motor.
The distribution and air inlet are adjusted by flaps controlled by stepper motors.
The control panel also includes the control for the heated rear screen (this is totally
independent to the other air conditioning functions).
152

Chapter 1
There are two types of air conditioning management, depending on the engine:
1.6i (TU5JP engine) 1.8i (EW7J4 engine) 2.0 TD (DW10TD engine)
Type C X
Type D X X
Type C: the engine management ECU does not control the engine cooling. The
engine ECU is called "non FRIC". The coolant temperature warning signal is sent
to the BSI by the air conditioning management unit.
Type D: the engine management ECU controls the engine cooling. The engine
ECU is called "FRIC". The coolant temperature warning signal is sent to the BSI by
the engine management ECU.
II - GENERAL LAYOUT
153
1320
BSI
8080
B C
A
2
3
1
5
4
67

Chapter 1
COMPONENTS
8080 Automatic climate control (RFTA)
A Heater matrix coolant temperature sensor
Passenger compartment temperature sensor
B Refrigerant pressure sensor
Evaporator temperature sensor
Alternator
External air temperature sensor
Engine coolant temperature sensor
Vehicle speed sensor
Heated rear screen
Heated door mirrors
Air conditioning compressor
C Heated rear screen relay
Heated door mirrors
Air conditioning compressor
154

Chapter 1
CONNECTIONS
n° Signal Type
1 Heater matrix coolant temperature Analogue
Passenger compartment temperature Analogue
User instructions (temperature, operating mode) All or nothing
2 Refrigerant pressure Analogue
Evaporator temperature Analogue
Alternator output voltage (engine running
information)
Analogue
External air temperature Analogue
Coolant temperature (for non FRIC engine ECU) Analogue
Vehicle speed Frequency
3 Compressor authorisation All or nothing
Coolant temperature (for FRIC engine ECU) Frequency
4 Air conditioning compressor engaging request All or nothing
5 Heated rear screen relay control All or nothing
Heated door mirrors control All or nothing
Compressor control All or nothing
6 Compressor activation request VAN
Recycling information VAN
Heated rear screen activation request (for engine
running)
VAN
7 Compressor status VAN
Air conditioning activation VAN
Compressor authorisation VAN
Coolant temperature/pressure safety, evaporator VAN
Heated rear screen operating status VAN
Engine running information VAN
External air temperature VAN
Evaporator temperature VAN
Brightness level VAN
Day / night status VAN
Black Panel status VAN
Economy mode VAN
Set to stand-by within 5 seconds VAN
Position of ignition key VAN
155

Chapter 1
III - LAYOUT DIAGRAM
KEY
A Cold air circuit 4 Temperature adjustment
B Warm air circuit 5 Air distribution in passenger comp.
8080 Air conditioning 6 Engine
1 Pressure relief valve 7 Heater matrix
2 Capacitor 8 Evaporator
3 Compressor
156
CITROËN
A
6
7
3
2
8
1
8080
4
5
B

Chapter 1
IV - DESCRIPTION OF THE USER DISPLAY AND CONTROLS
A - USER CONTROLS
N° CONTROL DESCRIPTION
1 Distribution Used to adjust the distribution of air using one of the various
preset flap positions (footwells, footwells-face, face, footwells-
demisting, windscreen)
2 Blower motor Controls the power of the air blower motor
3 Visibility Switching to automatic mode aimed at visibility, when one of
the parameters (except the blower motor) is adjusted
manually, the other settings switch to AUTO mode
4 Auto The system automatically controls the climate for the
passengers, one of the parameters can be adjusted manually
without affecting the other automatic settings.
5 Temperature Allows the user to adjust the reference temperature
6 Off Switches the system off
7 Rear de-icing Heated rear screen de-icing request
8 A/C Switches the air conditioning on or off (with ECO displayed on
the display)
9 Air inlet Used to recirculate air internally
157
4
5
6
7
8
9
1
3
2

Chapter 1
B - DISPLAY
The display is incorporated into the air conditioning control panel. It is used for:
• viewing the user choices and system status,
• providing feedback about the actions performed to the user,
• warning of any system faults.
Brightness of the LEDs (1)
The displays have a fixed brightness by day which can be dimmed at night.
The symbols are only illuminated at night (with fixed brightness).
Display (2)
During night driving, the display is not lit. It illuminates for 10 seconds when any
buttons on the control panel are operated.
Note: The Black Panel does not extinguish for as long as the heated rear screen
and/or visibility are active.
158
1
2

Chapter 1
159

Chapter 2
OPERATING PRINCIPLE
I - COMPRESSOR MANAGEMENT FUNCTION
The compressor is controlled by the BSI. It takes into account:
• the compressor engaging request (A/C),
• the icing up safety of the evaporator,
• the air conditioning pressure,
• the engine speed,
• the engine coolant temperature,
• the dialogue with the engine management ECU.
A - COMPRESSOR ENGAGING REQUEST
The request to engage the compressor is sent from the air conditioning control
panel to the compressor control management electronics via the VAN network.
Action the request is taken into account
IF condition the engine is running
AND condition the blower motor is activated
160

Chapter 2
B - EVAPORATOR ICING UP SAFETY DEVICE
The evaporator icing up safety device defines the rules for engaging and
cutting off the compressor depending on:
• evaporator temperature,
• external temperature.
Evaporator temperature as a function of external temperature:
KEY
A External air temperature
B Evaporator temperature
1 Compressor forbidden
2 Compressor authorised
161
-6°C 10°C 20°C 40°C
-2°C
0
a
B
2
1

Chapter 2
C - AIR CONDITIONING PRESSURE SAFETY DEVICE
The BSI cuts off the compressor in the event of:
• high pressure (risk of damaging the circuit),
• low pressure (probability of a leak).
Detection is performed by a 4 level pressure switch.
To prevent the compressor from being successively engaged, waiting times
are set:
COMPRESSOR CUT-OFF WAITING TIME
1st
cut-off 1 minute
2nd
cut-off 4 minutes
3rd
and subsequent cut-offs 16 minutes
The timer is reset when the engine running information disappears.
D - ENGINE SPEED SAFETY DEVICE
To ensure the compressor is sufficiently protected at high engine speeds, a
request to cut off the compressor is made if the engine speed is above 6250
rpm.
The compressor is authorised to re-engage if the engine speed falls below
5650 rpm. A cut-off time of at least 5 seconds is used.
162

Chapter 2
Example: Engine speed as a function of time.
KEY
max + Engine speed = 6250 rpm
max - Engine speed = 5650 rpm
Compressor forbidden
1 Compressor engaged
2 Compressor cut-off
3 5 second timer before re-engaging
4 Compressor engaged
163
max -
max
+
2 3 41

Chapter 2
E - ENGINE COOLANT TEMPERATURE COMPRESSOR CONTROL
If the engine coolant temperature is too high, compressor operation is
controlled by the BSI.
The compressor is forbidden for a coolant temperature above 112°C.
It is authorised to re-engage if the coolant temperature is below 109°C and if
the previous cut-off due to coolant temperature was more than one minute
ago.
Example: coolant temperature as a function of time.
KEY
max + Coolant temperature = 112°
max - Coolant temperature = 109°
Compressor forbidden.
1 The compressor is engaged.
2 The maximum temperature has been exceeded: the compressor is cut off
3 The compressor is re-engaged as the temperature is valid after the one minute
timer.
4 The maximum temperature has once again been exceeded: the compressor is
cut off.
5 The compressor is re-engaged when the temperature returns to normal after
more than one minute.
164
max -
max +
4 521 3

Chapter 2
II - ADDITIONAL ELECTRIC HEATING FUNCTION
Function:
For DW10TD engines (HDi), heating resistors are placed in the engine cooling
circuit. This allows a sufficient heat source to be obtained to operate the air
conditioning, despite the slow rise in engine temperature.
The engine ECU requests the additional heating depending on the following
information:
• coolant temperature,
• external temperature (through engine inlet).
Note: an additional heater is available as an option.
III - DE-ICING FUNCTION
Function:
To de-ice the heated rear screen and the heated door mirrors depending on:
• user request,
• energy management (12 minute timer),
• engine running information.
Action De-icing of the rear screen and door mirrors for 12 minutes
IF condition The user requests de-icing
AND condition The engine is running
Display Illumination of the de-icing LED
Case of switching off the engine during the timer
• If the engine is started again within one minute after switching it off:
De-icing is reactivated to finish the timer.
• If the engine is started again more than one minute after switching it off:
De-icing is not reactivated.
165

Chapter 2
IV - DOWNGRADED MODES
Faults in the components below lead to a system operation which, depending on
the case:
• bypasses the faulty component,
• prevents certain functions.
An ECU considers there to be a fault when the value transmitted by one of the
components is outside fixed limits. These values are set for normal vehicle usage,
plus a certain margin.
FAULT ORIGIN BEHAVIOUR ADOPTED
Evaporator temperature sensor. Compressor prevented from engaging.
External temperature sensor. The compressor cut-off only depends on
the evaporator temperature, with a
suitable limit.
Air conditioning pressure sensor. Compressor prevented from engaging.
Coolant temperature information. Compressor prevented from engaging.
166

Chapter 2
V - DIAGNOSTICS
Below are the components which can undergo a diagnostic procedure and the
data received:
COMPONENT ACCESSIBLE BY DIAGNOSTICS DATA RECEIVED
Evaporator sensor output Open circuit
Short circuit
Air conditioning pressure safety input Short circuit to earth
Air conditioning pressure signal Open circuit
Signal validity
Coolant temperature range Open circuit (TU5JP)
Short circuit (TU5JP)
Broken connection (EW7J4
and DW10TD)
Signal outside range (EW7J4
and DW10TD)
Compressor engaging request (BSI to engine ECU) Signal value
Short circuit to +12V
Compressor engaging authorisation (engine ECU to
BSI)
Signal value
Compressor control output Open circuit
Short circuit to earth
167

Chapter 3
ELECTRICITY
I - LAYOUT DIAGRAM - TU5JP
PFM008P
168

Chapter 3
III - LAYOUT DIAGRAM - EW7
PFM009P
169

Chapter 3
V - LAYOUT DIAGRAM - DW10
PFM010P
170

Chapter 3
IV - PARTS LIST
BB00 - Battery
0005 - Wiper stalk
1020 - Alternator
171

Chapter 3
8410 - Radio
172

Chapter 3
173

PART 9
VEHICLE IMMOBILISATION
174

175

Chapter 1
TRANSPONDER SYSTEM OPERATING PRINCIPLE
I - FOREWORD
The role of this function is to protect the vehicle:
• by electronically locking the engine management ECU - on petrol and HDi
engines,
• by electronically locking the diesel pump electrovalve - on XUD engines.
The system consists of:
• an analogue unit located in the top of the ignition switch,
• a responder label located in the ignition key,
• a Built-in Systems Interface (BSI) which authorises unlocking or not,
• an engine management ECU or a diesel pump electrovalve (depending on
engine),
• a Multifunction Screen (MFS) for displaying messages (XSARA PICASSO only).
Note: For simplification purposes, only petrol and HDI engines are dealt with as
the general operation is the same for XUD engines.
176

Chapter 1
II - GENERAL LAYOUT
COMPONENTS
BSI Built-in Systems Interface (BSI)
0004 Multifunction Screen (MFS)
8208 Key-transponder assembly
8606 "System status" LED
CONNECTIONS
n° Signal Type
1 Position of the ignition key All or nothing
Encrypted code Analogue
2 Engine ECU locking or unlocking control Digital
3 Engine ECU locking status Digital
4 Vehicle immobilisation status All or nothing
5 Fault message to be displayed VAN
177
BSI
1320
0004
1
8208 8606
2
3
4
5

Chapter 1
III - OPERATION
A - SYSTEM COMPONENTS
Transponder:
An analogue unit, located in the top of the ignition switch, sends a signal to the
ignition key. This is fitted with a responder label which disrupts the signal
emitted by the analogue unit. The modification to the signal allows the
analogue unit to transmit the key code (responder label) to the BSI.
Built-in Systems Interface:
The BSI decodes the signal sent by the label. It considers the key to be valid
or not, depending on the signal received from the key.
It then controls the display on the MultiFunction Screen (XSARA PICASSO) or
on the control panel (XSARA) and the locking/unlocking of the engine
management ECU.
Engine management ECU:
This can be locked or unlocked by the BSI. When locked, its functions are
prohibited (ignition, injection, etc). On diesel engine vehicles, the diesel pump
electrovalve is locked in the same way.
MultiFunction Screen (XSARA PICASSO only):
This displays the message "ENGINE IMMOBILISER FAULT" if it was not
possible to unlock the engine.
Case of engine locked: There is a communications problem or the engine
ECU has not unlocked itself after receiving the request from the BSI.
Case of unknown transponder: The key has not been recognised or has not
been reprogrammed after the last programming.
Control panel (XSARA only):
There is an LED on the control panel which shows the status of the
transponder.
178

Chapter 1
B - LOCKING FUNCTION
ACTION THE BSI CONTROLS LOCKING
IF condition the key is removed from the ignition switch
AND the ignition has been off for > 10 secs.
OR condition the key is in the OFF position
AND the ignition has been off for > 2 mins.
C - UNLOCKING FUNCTION
FUNCTION THE BSI CONTROLS UNLOCKING
IF condition the key is present
AND condition the key is recognised
AND condition the ignition is on
179

Chapter 2
OPERATING PRINCIPLE OF THE FACTORY FITTED
ANTI-INTRUSION ALARM
I - FOREWORD
Note: The factory fitted alarm is only available on the XSARA.
The role of this function is to protect the vehicle against intrusions. Protection is
provided by Perimetric and Volumetric monitoring.
This alarm is not multiplexed as it is inside the BSI. All the sensors and actuators
for this function are therefore connected directly to the unit.
180

Chapter 2
II - GENERAL LAYOUT
COMPONENTS
A Door, bonnet and boot switches
Volumetric suppression button
Ultra sound unit
HF remote control
System status LED
Siren
Ultra sound unit
Display LED
CONNECTIONS
n° Signal Type
1 Door status information All or nothing
Volumetric suppression request All or nothing
Siren prohibition request All or nothing
Intrusion information by volumetric monitoring All or nothing
Locking / unlocking request HF
2 Indicators and side repeaters control All or nothing
Siren control Serial connection
Ultra sound unit control Supply
LED control All or nothing
181
BSI
1 2
A B

Chapter 2
III - OPERATION
A - OPERATING MODES
The anti-intrusion alarm has 3 operating modes:
MODE DESCRIPTION
Armed mode Vehicle protected
Disarmed mode Vehicle not protected
Triggered mode Signalling an intrusion
B - ARMING / DISARMING
Arming
The vehicle is protected only when it is deadlocked using the HF remote
control.
When armed, an intrusion or cutting the supply will cause the alarm to be
triggered for 30 seconds. At the end of this time, or when the supply is
reconnected, the alarm returns to the armed state.
Disarming
Whether the alarm is triggered or not, the alarm is disarmed by:
• unlocking the vehicle with the HF remote control,
• the key being recognised when the ignition is switched on (after unlocking
with the key).
182

Chapter 2
C - PERIMETRIC PROTECTION
This protection monitors:
• the doors,
• the boot,
• the bonnet,
• the + accessories position,
• the + ignition on position,
• the + battery position.
Perimetric protection is active 5 seconds after the alarm is armed.
Case of one of the doors or boot or bonnet not correctly closed
• The siren emits a sound for 0.2 seconds.
• A timer is started: the user has 45 seconds to close the door, boot or
bonnet. After this, perimetric monitoring is active.
Triggering perimetric protection
ACTION TRIGGERING OF THE ALARM
IF condition change in status of one of the doors, boot or
bonnet
OR condition disappearance of the + battery
OR condition ignition switched on
183

Chapter 2
D - VOLUMETRIC PROTECTION
This protection monitors the volume of the passenger compartment. It is active
45 seconds after the alarm is armed.
1 - Triggering volumetric protection:
An intrusion is detected by the ultra sound sensor module. All significant
variations in passenger compartment volume trigger the alarm.
a - Prohibiting volumetric protection
• Voluntary prohibition
After the ignition is switched off, this protection can be prohibited
voluntarily, by pressing the volumetric suppression switch for at least 1
second. This request must be made within 5 minutes before the alarm
is armed, otherwise it is ignored.
• Automatic prohibition
Volumetric protection is prohibited after the alarm has been triggered 3
times within the same arming period.
E - TRIGGERING THE ALARM
If an intrusion attempt is detected when the alarm is armed, the alarm will:
• operate the self powered alarm for 30 seconds,
• operate the indicators and side repeaters,
• memorise the fact that the alarm has been triggered,
• count the number of times the alarm has been triggered due to the
volumetric protection.
After 30 seconds, the alarm returns to armed mode. It can only be triggered
again after being armed for at least 5 seconds.
The case of the supply being cut is controlled directly by the self powered
siren.
F - PROHIBITING THE SIREN
The siren can be prohibited by pressing the volumetric suppression switch for
at least 2 seconds, within 10 seconds after the ignition is switched on.
184

Chapter 2
185

Chapter 3
OPERATING PRINCIPLE OF THE AFTER-SALES
FITTED ANTI-INTRUSION ALARM
I - FOREWORD
The aim of this function is to be able to incorporate an after-sales anti-theft alarm
into the vehicle (Xsara or Xsara Picasso). The BSI communicates with the alarm
unit via the VAN network.
This alarm offers the same protection as the factory fitted alarm (optional on the
XSARA).
186

Chapter 3
II - GENERAL LAYOUT
COMPONENTS
8600 Autonomous alarm unit
A Boot opening switch (Xsara only)
Bonnet opening switch
Volumetric suppression button
Ultra sound sensors
Connector to the BSI controlling the interior lamps
Ignition switch
Siren
Display LED
CONNECTIONS
n° Signal Type
1 Information about the status of the doors, boot and bonnet All or nothing
Volumetric suppression request All or nothing
Information about modification to pass. comp. volume All or nothing
+ ignition on signal All or nothing
2 Request to arm or disarm the alarm VAN
3 Indicators control All or nothing
Siren control All or nothing
Display LED control All or nothing
Siren supply Supply
187
BSI
31
2
A B
8600

Chapter 3
III - OPERATION
A - PERIMETRIC PROTECTION
The information about the status of the doors, bonnet and boot is acquired by
the interior lamp control: if, after a time, the interior lamp or lamps are
extinguished, the vehicle is considered to be closed.
If the bulbs in the interior lamps are missing or faulty, the alarm is not affected:
the information is taken from the command sent by the BSI.
If a door remains open after the alarm is armed, the siren sounds for 30
seconds, up to 10 consecutive times. It is no longer triggered after this.
B - VOLUMETRIC PROTECTION
Volumetric protection is active 45 seconds after the alarm is armed.
If movements are detected before the end of this timer, volumetric activation is
delayed, several times if necessary.
Volumetric protection can be prohibited in the same way as for the factory
fitted alarm.
Note: Tests on the volumetric protection must be performed with the doors
and windows closed.
C - DISPLAY
An LED for this purpose is incorporated into the dashboard.
The LED operates in the same way for both vehicles:
STATUS DISPLAY
Armed flashing at 1 Hz
Volumetric protection prohibition permanently illuminated until armed
Siren triggering prohibition flashing at 1 Hz when armed
Triggering flashing when monitoring is disarmed, until
the memory is erased.
188

Chapter 3
2 - Arming
The LED flashes during the volumetric protection timer at a frequency of
25 Hz, then at a frequency of 1 Hz until it is disarmed. If volumetric
protection is cancelled, the LED flashes immediately at a frequency of 1
Hz until it is activated.
a - Triggering
To view the reason why the alarm was last triggered, the vehicle must
be locked and then unlocked quickly. The LED flashes in accordance
with the table below:
REASON FOR TRIGGERING NUMBER OF FLASHES
Volumetric 2
Opening of doors 3
Opening of boot 5
Opening of bonnet 6
Attempt to start engine 7
189

Chapter 3
D - SPECIFIC OPERATIONS
IMPORTANT: When fitting an after-sales alarm, the BSI must be
programmed to prevent the indicators from being controlled
when the doors are locked/unlocked. In this case, the alarm
controls signalling.
Opening the vehicle with the key:
If the vehicle is opened using the key, the alarm is triggered. To disarm the
alarm, the following procedure must be performed: enter the "EMERGENCY
CODE".
Entering the "EMERGENCY CODE":
A 5 figure code is given on a card supplied with the alarm system. Example:
43125.
STEP ACTION EFFECT
1 Open the door. The siren is set off.
2 Switch on the ignition.
3 Switch off the ignition immediately.
4 Switch on the ignition immediately.
5 Allow the LED to flash 4 times (1st
figure of
the code).
6 Switch off the ignition. The siren stops.
Repeat the procedure from step 2 to step 6 for the other 4 figures. If the code
is recognised, the alarm is disarmed.
190

Chapter 3
Fitting / removing the alarm:
When fitting the alarm, disconnect the battery. After the operation:
• Reconnect the battery,
• Enter the "EMERGENCY CODE",
• Switch on the ignition for 10 seconds,
• Switch off the ignition.
The siren is activated.
IMPORTANT:When working on the alarm, the battery must be
disconnected throughout the operation.
Switching off the self powered siren:
• Disarm the alarm,
• Disconnect the connector from the siren.
Diagnostic:
Diagnostics cannot be performed on the autonomous after-sales fitted alarm
and it must be disconnected during the diagnostics procedure.
IMPORTANT:When performing diagnostics on the vehicle, the after-sales
alarm must be disconnected.
191

Chapter 4
OPERATING PRINCIPLE OF THE
SYSTEM STATUS LED
Note: The system status LED is only fitted on the XSARA PICASSO.
I - FUNCTION
Visible from the outside of the vehicle, the system status LED is used to view the
protection status of the vehicle depending on:
• the locking status of the vehicle
• the immobiliser system
II - FUNCTIONAL DESCRIPTION
A - CONDITION ABOUT THE LOCKING STATUS OF THE VEHICLE
ACTION VIEWING THE LOCKING STATUS OF THE VEHICLE
IF condition the vehicle is locked or deadlocked
B - CONDITION ABOUT THE STATUS OF THE IMMOBILISER SYSTEM
ACTION VIEWING THE STATUS OF THE IMMOBILISER SYSTEM
IF condition the key is missing
AND condition the engine management ECU is locked
C - DISPLAY OF THE 2 PREVIOUS STATUSES
When the 2 previous statuses are fulfilled, the BSI controls the flashing of the
LED (frequency 1 Hz, cyclic ratio 1/20).
192

Chapter 4
193

Chapter 5
ELECTRICITY
I - LAYOUT DIAGRAM
TRANSPONDER
PFM011P
194

Chapter 5
II - PARTS LIST
BB00 - Battery
0005 - Wiper stalk
1020 - Alternator
195

Chapter 5
8410 - Radio
196

Chapter 5
197

PART 10
RADIO AND COMPACT DISC CHANGER
XSARA PICASSO
198

199

Chapter 1
GENERAL
I - FOREWORD
The XSARA PICASSO has 2 types of radio:
RB2 = Radio receiver fitted with a Basic mechanical cassette plate with split
screen
RD2 = Radio receiver fitted with a Compact Disc player with split screen
• They have a split screen located in the control panel.
• They receive operating requests from the MultiFunction Screen for the functions
performed using the remote controls at the steering wheel.
• All information relating to the display is communicated to the network and
controlled by the screen.
Note: All radios can be fitted with a Compact Disc Changer (CDC).
The only compatible CD changer is the 6 disc changer available as a CITROËN
accessory.
Note: Only engraved CDs can be read.
Configuration:
The following parameters can be configured using the diagnostics tool:
• Fader deactivated / activated.
• Geographical areas for the TUNER.
• Volume automatically linked to speed (RD2 and RB2 ).
• HI-FI version (activation of the output line) or not.
When leaving the FACTORY / in after-sales (= supplier FACTORY exit
configuration), the radios are configured as followed:
• Fader active.
• TUNER: Western Europe.
• Volume automatically linked to speed: OFF.
• Hi-Fi version for RD2, non Hi-fi for RB2.
200

Chapter 1
II - GENERAL LAYOUT
COMPONENTS
BSI Built-in Systems Interface 8420 Speaker on front left hand door
0004 MultiFunction Screen 8425 Speaker on front right hand door
8402 Aerial 8430 Speaker on rear left hand door
8410 Radio 8435 Speaker on rear right hand door
8413 Steering wheel remote
control
8440 Front left hand tweeter
8415 CD changer 8445 Front right hand tweeter
8500 Navigation
201
1
9
7
6
5
2
3
1110
8
8402
BSI
8413
8415
8500
0004
4
8410
8420 8425 8430 8435 8440 8445

Chapter 1
CONNECTIONS
n° Signal Type
1 Request to change radio and CD changer status All or nothing
2 Vehicle speed + VIN + brightness/contrast level VAN
3 Output signal (possibly function of vehicle speed) Analogue
4 CD audio input Analogue
5 Navigation audio input Analogue
6 Change of status of CD changer VAN
7 CD changer status VAN
8 Navigation status VAN
9 Change of status of navigation VAN
10 Radio status VAN
11 Change in status of radio VAN
202

Chapter 1
203

Chapter 2
RADIO OPERATING PRINCIPLE
I - SWITCHING ON / OFF
A - GENERAL DESCRIPTION
The radio is switched on and off by:
• pressing the "ON" button on the front of the radio,
• switching the ignition on or off*,
• inserting a CD when the + accessories is present (RD2).
* If the radio was on before the ignition was switched off (vehicle stationary),
the radio will work when the + accessories reappears.
B - SUPPLY MANAGEMENT
The MultiFunction Screen controls the supply to the radio:
• When the +VAN is present.
The radio sends on and off requests to the MultiFunction Screen.
The MultiFunction screen decides whether to switch the radio on or off,
depending on the case.
• When the +VAN is missing.
The radio can wake up the VAN network to request that it be switched on. It
switches itself off after a 30 minute timer.
204

Chapter 2
II - RADIO ANTI-THEFT FUNCTION
The radios do not have an LED which flashes when the vehicle is stationary.
The anti-theft protection device is provided in the form of an identification code. It
consists of the last 8 characters of the VIN, memorised by the BSI and the radio.
Note: Radios are supplied by the Replacement Parts Division with a memorised
VIN code.
When operating, the radio's VIN code is compared with that of the BSI. If they do
not correspond, the radio switches to scrambled mode.
Note: The VIN code cannot be reprogrammed in the BSI.
Consequently, the radio VIN code must be changed using the diagnostics tool if a
new radio is fitted.
III - CONTROLLING THE BRIGHTNESS
The RD2 alters its brightness as a function of the value given by the BSI.
The brightness of the RB2 cannot be adjusted.
IV - VOLUME AUTOMATICALLY LINKED TO VEHICLE SPEED
RB2 and RD2 radios automatically correct the volume as a function of speed if the
following 2 conditions are fulfilled:
• the configuration via the "Volume automatically linked to speed" diagnostic is
ON,
• the user has activated, via the radio menu, the automatic volume correction
(VOLUME_AUTO = ON).
This function does not affect the volume displayed on the screen and is controlled
within the radio.
Note: The values of the volume are transmitted to the multifunction screen during
adjustment.
It is still possible to adjust the volume manually using the "ON/VOL" button or the
steering wheel remote control at any time and is independent to automatic
correction.
205

Chapter 2
V - THERMAL PROTECTION
The radios have dynamic maximum volume limitation strategies, which depend on
the rise in temperature in the units.
Note: RD2 radios limit the volume without altering the volume displayed on the
screen.
RB2 radios only display the change in volume if the user performs a voluntary
action (reduction in maximum volume from 30 to xx).
VI - CONFIGURATION
All new systems which have not been programmed will not be recognised by the
system and will therefore not work. It is therefore essential to declare all radios
and/or CD changers which are added or removed. All programming procedures
require the use of a diagnostics tool. They must be performed on the vehicle.
ACCESSORIES CONFIGURATION IN THE EVENT OF
ADDING/REMOVING
CD changer Configuration of control panel + BSI
Factory fitted radio Configuration of control panel + BSI
206

Chapter 2
207

Chapter 3
ELECTRICITY
I - LAYOUT DIAGRAM
208

Chapter 3
II - PARTS LIST
BB00 - Battery
0005 - Wiper stalk
1020 - Alternator
209

Chapter 3
8410 - Radio
210

Chapter 3
211

Manual xsara-and-xsara-picasso-bsi-operating-principles

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