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CITROEN XSARA PICASSO XSARA MULTIPLEXED BSI OPERATING PRINCIPLE Manual
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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


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

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
C
CONTENTS
PART 2
SIGNALLING XSARA AND XSARA PICASSO
CHAPTER 1 : GENERAL .......................................................... PAGE 33
I - FOREWORD ................................................................................. PAGE 33
II - GENERAL LAYOUT ....................................................................... PAGE 33
CHAPTER 2 : OPERATING PRINCIPLE ................................... PAGE 35
I - INDICATOR FUNCTION................................................................. PAGE 35
II - HAZARD WARNING LAMPS FUNCTION ........................................ PAGE 35
III - FAULTY BULB DETECTION FUNCTION ........................................ PAGE 36
CHAPTER 3 : ELECTRICITY .................................................... PAGE 37
I - LAYOUT DIAGRAM ....................................................................... PAGE 37
II - PARTS LIST .................................................................................. PAGE 38
PART 3
INTERIOR LIGHTING XSARA AND XSARA PICASSO
CHAPTER 1 : GENERAL .......................................................... PAGE 41
I - FOREWORD ................................................................................. PAGE 41
II - GENERAL LAYOUT ....................................................................... PAGE 43
CHAPTER 2 : OPERATING PRINCIPLE ................................... PAGE 45
CHAPTER 3 : ELECTRICITY .................................................... PAGE 47
I - LAYOUT DIAGRAM ....................................................................... PAGE 47
II - PARTS LIST .................................................................................. PAGE 48

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
D
CONTENTS
PART 4
DRIVER'S INFORMATION XSARA PICASSO
CHAPTER 1 : GENERAL .......................................................... PAGE 53
I - FOREWORD ................................................................................ PAGE 53
II - LAYOUT ....................................................................................... PAGE 54
III - XSARA PICASSO CONTROL PANEL ........................................... PAGE 61
CHAPTER 2 : MESSAGES AND WARNINGS FUNCTION ....... PAGE 65
I - DISPLAY ...................................................................................... PAGE 65
II - PRIORITY LEVELS ....................................................................... PAGE 65
III - WARNINGS FROM WIRE INFORMATION ..................................... PAGE 66
IV - WARNINGS FROM THE VAN FRAMES ......................................... PAGE 67
CHAPTER 3 : INSTRUMENTATION FUNCTION ...................... PAGE 69
I - COOLANT TEMPERATURE GAUGE AND WARNING FUNCTION.. PAGE 69
II - FUEL LEVEL GAUGE FUNCTION ................................................. PAGE 74
III - SPEEDOMETER FUNCTION......................................................... PAGE 77
IV - MILEOMETER FUNCTION ............................................................ PAGE 79
V - MAINTENANCE INDICATOR FUNCTION....................................... PAGE 80
VI - CLOCK / DATE / TEMPERATURE FUNCTION ............................... PAGE 84
CHAPTER 4 : LIGHTING FUNCTION ....................................... PAGE 87
I - RHEOSTAT FUNCTION ................................................................ PAGE 87
II - NIGHT DRIVING FUNCTION ......................................................... PAGE 88
CHAPTER 5 : ON-BOARD ECU FUNCTION ............................ PAGE 91
I - GENERAL .................................................................................... PAGE 91
II - LAYOUT ....................................................................................... PAGE 92
III - OPERATING MODES ................................................................... PAGE 93
CHAPTER 6 : ELECTRICITY .................................................... PAGE 95
I - LAYOUT DIAGRAM ...................................................................... PAGE 95
II - PARTS LIST ................................................................................. PAGE 98

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
E
CONTENTS
PART 5
DRIVER'S INFORMATION XSARA
CHAPTER 1 : GENERAL .......................................................... PAGE 103
I - FOREWORD ................................................................................. PAGE 103
II - LAYOUT ........................................................................................ PAGE 104
CHAPTER 2 : WARNING FUNCTION ....................................... PAGE 107
I - LIST OF LEDS ............................................................................... PAGE 107
II - INTEGRATED BUZZER ................................................................. PAGE 108
III - WARNING APPEARANCE CONDITIONS ....................................... PAGE 108
CHAPTER 3 : INSTRUMENTATION FUNCTION....................... PAGE 111
I - MAINTENANCE INDICATOR.......................................................... PAGE 111
II - OIL LEVEL GAUGE ....................................................................... PAGE 113
III - MILEOMETER ............................................................................... PAGE 114
CHAPTER 4 : REPAIRING THE CONTROL PANEL ................. PAGE 115
I - READING AND ERASING FAULTS ................................................ PAGE 115
II - PROGRAMMING THE MAINTENANCE TYPE ................................. PAGE 115
III - ACTUATOR TEST ......................................................................... PAGE 115
IV - READING THE FOLLOWING PARAMETERS ................................. PAGE 116

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
F
CONTENTS
PART 6
VISIBILITY XSARA AND XSARA PICASSO
CHAPTER 1 : GENERAL .......................................................... PAGE 119
I - FOREWORD ................................................................................ PAGE 119
II - GENERAL LAYOUT ...................................................................... PAGE 120
CHAPTER 2 : OPERATING PRINCIPLE................................... PAGE 123
I - WINDSCREEN WIPER FUNCTION ............................................... PAGE 123
II - REAR WIPER FUNCTION ............................................................. PAGE 125
III - MANAGEMENT OF WIPER PARKED POSITIONS ......................... PAGE 126
IV - WIPER PROTECTION................................................................... PAGE 126
V - DE-ICING ..................................................................................... PAGE 126
VI - HEADLAMP WASHER TIMER ....................................................... PAGE 127
CHAPTER 3 : ELECTRICITY .................................................... PAGE 129
I - LAYOUT DIAGRAM ...................................................................... PAGE 129
II - PARTS LIST ................................................................................. PAGE 130
PART 7
LOCKING / UNLOCKING XSARA AND XSARA PICASSO
CHAPTER 1 : GENERAL .......................................................... PAGE 135
I - FOREWORD ................................................................................ PAGE 135
II - GENERAL LAYOUT ...................................................................... PAGE 138
CHAPTER 2 : OPERATING PRINCIPLE................................... PAGE 141
I - LOCKING / UNLOCKING............................................................... PAGE 141
II - DEADLOCKING ............................................................................ PAGE 147

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
G
CONTENTS
PART 8
AUTOMATIC CLIMATE CONTROL XSARA PICASSO
CHAPTER 1 : GENERAL .......................................................... PAGE 151
I - FOREWORD ................................................................................. PAGE 151
II - GENERAL LAYOUT ....................................................................... PAGE 152
III - LAYOUT DIAGRAM ....................................................................... PAGE 155
IV - DESCRIPTION OF THE USER DISPLAY AND CONTROLS............. PAGE 156
CHAPTER 2 : OPERATING PRINCIPLE ................................... PAGE 159
I - COMPRESSOR MANAGEMENT FUNCTION .................................. PAGE 159
II - ADDITIONAL ELECTRIC HEATING FUNCTION.............................. PAGE 164
III - DE-ICING FUNCTION .................................................................... PAGE 164
IV - DOWNGRADED MODES ............................................................... PAGE 165
V - DIAGNOSTICS .............................................................................. PAGE 166
CHAPTER 3 : ELECTRICITY .................................................... PAGE 167
I - LAYOUT DIAGRAM - TU5JP .......................................................... PAGE 167
III - LAYOUT DIAGRAM - EW7 ............................................................. PAGE 168
V - LAYOUT DIAGRAM - DW10 ........................................................... PAGE 169
IV - PARTS LIST .................................................................................. PAGE 170

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
H
CONTENTS
PART 9
VEHICLE IMMOBILISATION XSARA AND XSARA PICASSO
CHAPTER 1 : TRANSPONDER SYSTEM OPERATING
PRINCIPLE ........................................................ PAGE 175
I - FOREWORD ................................................................................ PAGE 175
II - GENERAL LAYOUT ...................................................................... PAGE 176
III - OPERATION................................................................................. PAGE 177
CHAPTER 2 : OPERATING PRINCIPLE OF THE FACTORY
FITTED ANTI-INTRUSION ALARM.................... PAGE 179
I - FOREWORD ................................................................................ PAGE 179
II - GENERAL LAYOUT ...................................................................... PAGE 180
III - OPERATION................................................................................. PAGE 181
CHAPTER 3 : OPERATING PRINCIPLE OF THE AFTER-SALES
FITTED ANTI-INTRUSION ALARM.................... PAGE 185
I - FOREWORD ................................................................................ PAGE 185
II - GENERAL LAYOUT ...................................................................... PAGE 186
III - OPERATION................................................................................. PAGE 187
CHAPTER 4 : OPERATING PRINCIPLE OF THE SYSTEM
STATUS LED ..................................................... PAGE 191
I - FUNCTION ................................................................................... PAGE 191
II - FUNCTIONAL DESCRIPTION ....................................................... PAGE 191
CHAPTER 5 : ELECTRICITY .................................................... PAGE 193
I - LAYOUT DIAGRAM ...................................................................... PAGE 193
II - PARTS LIST ................................................................................. PAGE 194
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The document aims to provide an explanation of specific functions of the BSI (Built-in Systems Interface) for the XSARA and XSARA PICASSO. It covers the electrical functions of both models, including signalling, interior lighting, driver's information, visibility, locking and unlocking, automatic climate control, immobilisation, and the radio system.