How Wire Safety Device - Fiat Brava Service Manual

Electrical system
Protection and safety devices
55.
H O T W I R E SAFETY DEVICE
The voltage is distributed in the electrical system using cables suitable for withstanding the current ab­
sorbed by the electrical devices. The cables are increased by safety coefficients, so that they are safe to
use.
The safety devices with hot wires protect the car from possible overloads, which can damage the whole
electrical system at the points where they are not protected in the conventional manner.
The term "hot wire" means those cables which connect the battery positive to the electrical device w i t h ­
out the help of fuse protection; this is possible thanks to the special sheath which covers them.
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There are seven hot wires on this car, and they involve the following components:
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- Connection between the battery positive (1) and starter motor (2).
- Connection between starter motor (2) and alternator (3).
- Connection between the battery positive (1) and maxi fuse box (4).
- Connection between battery positive (1) and A B S fuse (5).
- Connection between battery positive (1) and air conditioning system fuse (6).
- Connection between battery positive (1) and fuse for radiator/condenser fan (7).
- Connection between battery positive (1) and preheating control unit (8) (diesel versions).
This car is fitted w i t h a protection system us­
ing a maxi fuse box (containing six fuses, of
w h i c h three are optional depending on the
version of car).
This system is different from the previous sys­
tems w h i c h used a single fuse, because it
manages the various activities separately, so
as to avoid seizure of the car if a fault occurs.
The fuses used are:
A. Fuel injection (30A; 60A for Diesel)
B. Ignition (40A)
C. Radiator fan (40A)
D. Fuse unit (80A)
E. Additional optional extra (60A)
F. Air conditioner (50A)
G. Antiskid (60A)
Bravo-Brava
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Publication no. 506.670/02