Fiat Doblo Owner's Handbook Manual - Electronic

166

VEHICLE MAINTENANCE

ELECTRONIC

CONTROL UNITS

When the vehicle is being used nor-

mally, special measures are not neces-

sary.

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. The modern battery chargers

can discharge voltage up to 20V.

– 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. Ensure the battery posts are

connected up to the right leads (the

Battery

Maximum 

admitted 

stand-by intake

40 Ah 

24 mA

50 Ah

30 mA

60 Ah 

36 mA

polarity is correct) and check that the

connection has been made properly.

– 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 units if

you are electrically welding the vehi-

cle body. Remove the units if temper-

atures exceed 80°C (special opera-

tions on the bodywork, etc.).

IMPORTANT If the sound system

or alarm systems are not installed cor-

rectly, they can interfere with the

working of the electronic control

units.

Modifications or repairs

to the electrical system

carried out incorrectly

and without bearing the features

of the system in mind can cause

malfunctions with the risk of fire.

The total intake of these systems

(factory and after-market) must be less

than 0.6 mA x Ah (of the battery) as

shown in the following table:

149-173 Doblo GB  9-05-2008  12:10  Pagina 166