Fiat 1998 Marea Weekend, Service Manual

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Electrical equipment
Air bag - New features
Marea-Marea Weekend
1999 range
55.
PASSENGER PRESENCE SENSOR PPD
The 1999 range air bag system now comes with a passenger presence sensor that prevents the front pas-
senger air bag and passenger side bag (where fitted) going off if a passenger is not present.
Passenger side seat w i t h passenger presence sensor (PPD)
4F002FL01
1. Side bag control connector
2. Passenger presence sensor connector
3. Passenger presence sensor PPD
4. Electronic interface device
The Passenger Presence Sensor identifies the presence of a weight on the seat cushion and transmits this
information to the electronic control unit that manages the air bag system. The ECU, which also controls
the pretensioner, is connected electrically to the system via a cable (with a yellow sheath). The cable con-
nector is located in the lower part of the seat anchored to the bottom on the right side.
If no passenger is present, the control unit disables the front and side bags (where fitted) on the passen-
ger side.
This solution allows a significant reduction in repair costs in the case of accidents where it is not neces-
sary to activate the restraint and protection systems on the passenger side because no occupant is pres-
ent.
An electronic device located in the lower part of the seat acts as an interface between signals from the
control unit and signals from the passenger presence sensor (PPD).
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Publication n° 506.763/15