Butterfly Casing Actuator - Fiat Bravo Service Manual

Bravo ft 20v
98 range
Copyright by Fiat Auto
Wiring connector
The numbers indicate the corresponding con-
trol unit pins.
B U T T E R F L Y C A S I N G A C T U A T O R
The actuator is fixed to the inlet chamber and
regulates the quantity of air drawn in by the e n -
gine.
According to the signal coming from the accel-
erator pedal potentiometer, the injection control
unit control the opening of the butterfly by
means of a direct current motor incorporated in
the butterfly casing actuator.
The butterfly casing actuator is fitted w i t h t w o
potentiometers connected in parallel so that
one controls the other and viceversa.
If there is a problem w i t h the t w o potentiome-
ters or if there is no supply, the control unit re-
duces the engine torque, according to the posi-
tion of the accelerator pedal.
If the butterfly casing actuator or the injection
control unit are replaced, the f o l l o w i n g "self¬
- learning" procedure must be carried out:
- Place the ignition key in the ON position and
keep it in this position for 3 0 sees
- Place the ignition key in the OFF position for
5 sees
- Return the key to the ON position and start up
the engine
Wiring connector
The numbers indicate the corresponding c o n -
trol unit pins.
E n g i n e
Fuel system
ioT
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