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Marea-Marea
99 range
After even an apparently slight impact, if there is a smell of fuel or there are leaks from the fuel
system, do not turn the inertia switch back on, but search first for the cause of the problem and
remedy it to avoid the risk of fire.
Copyright by Fiat Auto
Weekend®
A. C
20
*
INERTIA SWITCH
In order to improve the safety of the occupants
of the vehicle in the case of an impact, the ve-
hicle is equipped with an inertia switched lo-
cated inside the passenger compartment, on
the left panel under the dashboard on the
driver's side.
This sensor reduces the risk of fire (as a result
of the escape of fuel) by de-activating the
auxiliary electric pump which supplies the in-
jection circuit.
The inertia switch consists of a steel ball fitted
in a (conical shaped) housing and kept in po-
sition by the attraction force of a permanent
magnet.
In the case of a violent impact, the ball is re-
leased by the magnetic clip and opens the
normally closed (NC) electrical circuit inter-
rupting the connection to earth of the electric
pump and consequently the injection system
supply.
To restore the connection to earth for the aux-
iliary pump, the seat has to be moved back and
the switch pressed until a click is heard.
Inertia switch components
1.
Complete inertia sensor
2.
Outer casing
3.
Button
4.
Upper side
5.
Engagement side
6.
Permanent magnet
7.
Permanent magnet housing
8.
Steel ball
C.
Common terminal
N.C. Normally closed contact
N.A. Normally open contact
Engine
Fuel system
10.
35
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