Ii - Additional Electric Heating Function; Iii - De-Icing Function - CITROEN XSARA Technical Training Manual

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.
Functional description:
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.
Functional description:
Action
IF condition
AND condition The engine is running
Display
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.
MULTIPLEXED BSI - XSARA PICASSO AND XSARA – PART 8
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De-icing of the rear screen and door mirrors for 12 minutes
The user requests de-icing
Illumination of the de-icing LED
Chapter 2