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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.
Functional description:
Action
Illumination of hazard warning lamps.
the ignition is on
IF condition
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.
Functional description:
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.
MULTIPLEXED BSI - XSARA PICASSO AND XSARA – PART 2
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