Fiat Bravo Service Manual page 241

Bravo-Brava ty
16v
Engine
Fuel system
10.
IGNITION POWER MODULE
The power module, located on the side of the
inlet manifold, is basically an electronic
switch which, by means of the impulses
coming from the control unit, controls the
current in the ignition coil primary winding.
Through a particular circuit it limits the cur­
rent which circulates in the coil primary
winding when the maximum value is reached
in order to reduce the heating of the actual
module.
To prevent the overheating of the coil if the
ignition takes place with the engine switched
off, the module has a rest closing device
when the ignition impulses cease arriving
from the control unit.
Wiring connector
A: module input B: module output
C: ignition coil
82 71
B
mm
+ —
+ +
IGNITION COIL
The coil used is the closed magnetic circuit
type with the windings in a plastic container
immersed in epoxide resin.
The coil is connected directly to the spark
plug by a silicon material extension which
has high dielectric characteristics.
The earth for the secondary circuit is ob­
tained with a special cable as the coil is insu­
lated by the cylinder head.
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