CITROEN XSARA Technical Training Manual page 40

4 - Repairs
ITEM TO BE
REPLACED
BSI ONLY *
ENGINE ECU
ONLY
KEYS AND/OR
REMOTE
CONTROLS
BSI *
+
ENGINE ECU
* Remember to configure the BSI according to the correct customisation
of the functions and accessories fitted on the vehicle.
5 - Interchanging parts
WARNING:
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.
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
ESSENTIAL ITEMS
Customer's confidential card.
All vehicle keys.
New BSI.
Diagnostic tool.
Customer's confidential card.
New engine ECU.
Diagnostic tool.
Customer's confidential card.
All vehicle keys.
Diagnostic tool.
Customer's confidential card.
All vehicle keys.
New BSI + engine ECU.
Diagnostic tool.
Interchanging the BSI and engine ECU with one (or
several) components from a different vehicle is strictly
forbidden.
26
OPERATIONS TO BE
Programming of access code.
Programming of keys and HF
remote controls.
Programming
code.
Programming of keys and HF
remote controls.
Programming of access code.
Programming of keys and/or HF
remote controls.
Programming
code.
Chapter 2
PERFORMED
of engine
of engine
ECU
ECU