Accelerator Pedal Potentiometer; Brake Pedal Switch; Clutch Pedal Switch - Fiat 1998 Marea Service Manual

Marea- Marea Weekend 0 >
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CLUTCH PEDAL SWITCH

There is a switch (2) on the clutch pedal connected to pin F59 of the injection control unit.
The "clutch pedal operated" signal is used by the injection control unit to distinguish the gear engaged
and gear change conditions.
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ACCELERATOR PEDAL POTENTIOMETER

(0.281.002.203)
The position of the accelerator pedal is trans-
formed into an electrical voltage signal and
sent to the injection control unit by the poten-
tiometer connected to the pedal.
The accelerator pedal position signal is proc-
essed, together with the information relating to
the number of revs, to obtain the injection
times and pressure.
The sensor consists of a casing (1), fixed to
the pedals assembly by means of a flange,
which contains a shaft (2), in an axial position,
connected to the two potentiometers (3): one
main one and one safety one.
One coil spring on the shaft guarantees the
correct resistance to pressure, whilst a second
spring ensures the return on release.
Connector wiring
The numbers indicte the corresponding control
unit pins.

BRAKE PEDAL SWITCH

There is a switch (1) on the brake pedal
which operates the brake lights; the
same switch also sends a signal to pin
F27 of the injection control unit.
the "brake pedal pressed" signal is used
by the control unit to:
- understand that there is a deceleration
situation;
- check the plausibility of the signal
coming from the accelerator potenti-
ometer.
Engine
Fuel system
10.
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