connect FIAT DUCATO 244 2005 3.G Owner's Manual

176VEHICLE MAINTENANCE
Furthermore, remember that high in-
take electric devices (such as baby bot-
tle warmers, vacuum cleaners, cellular
phones, mini-fridges, etc.) powered
when the engine is offcan deploy
the battery.
IMPORTANTWhen installing ad-
ditional systems on the vehicle, bear
in mind that improper branches on
connections of the vehicle wiring are
dangerous, particularly if safety devices
are involved.
Battery
60 Ah
88 Ah
100 Ah
The total intake of these systems
(factory and after-market) must be
less than 0.6 mA x Ah (of the bat-
tery) as shown in the following table:
Maximum
admitted stand-by
intake
36 mA
52.8 mA
60 mA
If the vehicle is inactive for a long pe-
riod of time, refer to the “Vehicle stor-
age” paragraph in section “Getting the
best out of you vehicle”.
Before performing any operation on
the electrical system, disconnect the
battery negative cable.
Battery terminals shall always be
perfectly separated.
If you want to add accessories after
buying the vehicle (antitheft system,
free-hand phone kit, radio navigator,
etc.) visit a Fiat Dealership. They
can suggest the most suitable acces-
sories to get and check whether the
electric system can support the
required load or whether a higher
capacity battery is required.
These devices will, in fact, run off
the battery even when the key is not
inserted (vehicle parked, engine off).

177VEHICLE MAINTENANCE
ELECTRONIC
CONTROL UNIT
When the vehicle is being used nor-
mally, special measures are not nec-
essary.
The following instructions must be
followed very carefully however, if
you work on the electrical system or
in cases where emergency starting is
necessary:
– never disconnect the battery from
the electric system while the engine is
running;
– disconnect the battery from the
electric system if you are recharging it;
– never perform emergency starting
with a battery charger. Always use an
auxiliary battery;
– be particularly careful when con-
necting the battery to the electric sys-
tem. Make sure that the polarity is
correct and that the connection is ef-
ficient;
– do not connect or disconnect the
terminals of the electronic units while
the ignition key is at MAR;
– do not check polarity through
sparking;– disconnect the electronic control
units if you are electrically welding the
vehicle body. Remove the units if tem-
peratures exceed 80 °C (special op-
erations on the bodywork, etc.).
IMPORTANTIf the sound system
or vehicle alarm systems are not in-
stalled correctly, they can interfere
with the working of the electronic
control units.
Modifications or repairs to
the electrical system car-
ried out incorrectly and without
bearing the features of the system
in mind can cause malfunctions
with the risk of fire.
WARNING
SPEED LIMITER
On certain version, the injection con-
trol unit is set to limit the vehicle
speed at a max. preset limit.
Speed limits are the following:
– for Minibus versions (M2 homolo-
gation category): 100 km/h;
– for good Transport versions (ve-
hicle dead weight: > 3.5 t) (N2 ho-
mologation category): 90 km/h;
Label (fig.16) with admitted top
speed (90 or 100 km/h according to
versions) is applied on the wind-
screen.
This limit has been established by Eu-
ropean Directive 2002/85/EC, what-
ever violation is therefore punishable
by law.
IMPORTANTWhen the device
comes into action, the speed value
displayed on the instrument panel
could be approx. 10% higher than the
actual one.
fig. 16
F0D0299m