Electronic control units – FIAT Ulysse User Manual

Page 205

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CAR MAINTENANCE

204

These devices will, in fact, run off the

battery even when the key is not in-
serted (car parked) and can deploy the
battery.

The total intake of these systems

(factory and after-market) must be less
than a 0.6 mA x Ah (of the battery), as
shown in the following table:

Battery:

50 Ah

60 Ah

70 Ah

Maximum
admitted
stand-by intake:

30 mA

36 mA

42 mA

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 off can deploy the
battery.

IMPORTANT If you need to fit ad-

ditional systems in the car, remember
that improper wiring connections, in
particular if they affect safety devices,
are dangerous.

ELECTRONIC
CONTROL UNITS

When the car is being used normal-

ly, special measures are not necessary.

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 electrical system while the engine
is running.

– disconnect the battery from the

electrical system if you are recharg-
ing it.

– never perform emergency start-

ups with a battery charger. Always use
an auxiliary battery.

– be particularly careful when con-

necting the battery to the electrical
system. Make sure that the polarity is
correct and that the connection is ef-
ficient.

– before connecting/disconnecting

the electronic unit terminals make
sure the ignition key.

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