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ELECTRONIC<br />
CONTROL UNIT<br />
When the vehicle is being used normally,<br />
special measures are not necessary.<br />
The following instructions must be<br />
followed very carefully however, if<br />
you work on the electrical system or<br />
in cases where emergency starting is<br />
necessary:<br />
– never disconnect the battery from<br />
the electric system while the engine is<br />
running;<br />
– disconnect the battery from the<br />
electric system if you are recharging it;<br />
– never perform emergency starting<br />
with a battery charger. Always use an<br />
auxiliary battery;<br />
– be particularly careful when connecting<br />
the battery to the electric system.<br />
Make sure that the polarity is<br />
correct and that the connection is efficient;<br />
– do not connect or disconnect the<br />
terminals of the electronic units while<br />
the ignition key is at MAR;<br />
– do not check polarity through<br />
sparking;<br />
– disconnect the electronic control<br />
units if you are electrically welding the<br />
vehicle body. Remove the units if temperatures<br />
exceed 80 °C (special operations<br />
on the bodywork, etc.).<br />
IMPORTANT If the sound system<br />
or vehicle alarm systems are not installed<br />
correctly, they can interfere<br />
with the working of the electronic<br />
control units.<br />
WARNING<br />
Modifications or repairs to<br />
the electrical system carried<br />
out incorrectly and without<br />
bearing the features of the system<br />
in mind can cause malfunctions<br />
with the risk of fire.<br />
fig. 16<br />
F0D0299m<br />
SPEED LIMITER<br />
On certain version, the injection control<br />
unit is set to limit the vehicle<br />
speed at a max. preset limit.<br />
Speed limits are the following:<br />
– for Minibus versions (M2 homologation<br />
category): 100 km/h;<br />
– for good Transport versions (vehicle<br />
dead weight: > 3.5 t) (N2 homologation<br />
category): 90 km/h;<br />
Label (fig.16) with admitted top<br />
speed (90 or 100 km/h according to<br />
versions) is applied on the windscreen.<br />
This limit has been established by European<br />
Directive 2002/85/EC, whatever<br />
violation is therefore punishable<br />
by law.<br />
IMPORTANT When the device<br />
comes into action, the speed value<br />
displayed on the instrument panel<br />
could be approx. 10% higher than the<br />
actual one.<br />
VEHICLE MAINTENANCE<br />
177
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