Page 167 of 222

166VEHICLE 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 mApolarity 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.).
IMPORTANTIf 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
Page 182 of 222

Modifications or repairs
to the fuel system that
are not carried out prop-
erly or do not take the system
technical specifications into ac-
count can cause malfunctions
leading to the risk of fire. FUEL SUPPLY/IGNITION
Petrol versions
Electronic Multipoint sequential
phased injection integrated with igni-
tion, returnless system.FUEL FEED/IGNITION
Multijet versions
“Common Rail” electronic control
direct injection, turbo and intercool-
er.
SPARK PLUGS
The cleanness and soundness of the
spark plugs are very important for
keeping the engine efficient and pol-
luting emissions down.
The appearance of the spark plug, if
examined by an expert eyes, is a good
way of pinpointing a problem even if it
has nothing to do with the ignition sys-
tem. Therefore, if the engine has prob-
lems, it is important to have the spark
plugs checked at a Fiat Dealership.
The spark plugs must be
changed at the times
specified in the service
schedule. Only use the type of
plugs indicated. If the heat ratio
is less than required or the life
specified is not guaranteed, prob-
lems can arise.
181TECHNICAL SPECIFICATIONS
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Page 216 of 222

215INDEX
Rearview mirrors
- electric ....................................... 56
- exterior ..................................... 55
- interior ...................................... 55
Rev counter .................................. 24
Reversing light ............................... 134
Rims ........................................ 183-185
Roof bars
- fasteners presetting ................ 86
Rubber tubing................................ 168
SBR system ................................. 10
Seat adjustment ............................ 48
Seat belts
- general warnings...................... 13
- height adjustment.................... 11
- maintenance ............................ 14
- use .............................................. 9
Seats
- accessing the rear seat........... 52
- adjustments .............................. 48
- cleaning ...................................... 173
- electrically heated ................... 49
- passenger folding seat ............ 50
Side doors ...................................... 75
Side/taillights
- control ...................................... 63- front bulb replacement .......... 133
- rear bulb replacement ........... 134
Snow chains ................................... 116
Snow tyres .................................... 117
Sound system ............................... 97
- setup system ............................ 97
- sound system installation ...... 98
Spark plugs
- maintenance ............................. 181
- type............................................. 179
Starting the engine ....................... 105
- bump starting ........................... 121
- diesel versions ......................... 107
- emergency startup ......... 107-119
- ignition switch .......................... 20
- jump starting ............................ 120
- petrol versions......................... 106
- stopping the engine ................ 108
- warming up the engine .......... 107
Steering column lock ................... 20
Steering column stalks
- left-hand stalk ......................... 63
- right-hand stalk ........................ 64
Steering wheel adjustment ......... 55
Steering........................................... 183
Stopping the engine ..................... 107
Storing the vehicle ....................... 118Structure ........................................ 183
Sun visors ....................................... 71
Suspensions .................................. 182
Symbols........................................... 6
Tailgate.......................................... 79
Technical characteristics ............ 174
Third brake lights ........................ 136
Tilting shelf ................................... 71
Tools ............................................... 121
Top speed ...................................... 186
Towing a trailer
- assembly diagram .................... 114
- tow hitch installation .............. 114
- warnings ................................... 113
Towing the vehicle ....................... 146
Transmission ................................ 182
Transporting children in safety . 15
Trip computer .............................. 36
Tyre pressure................................ 185
Tyres
- if a tyre is punctured .............. 121
- inflation pressure .................... 184
- reading ....................................... 184
- standard..................................... 185
Using the gearbox ..................... 109
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