Inertia switch

INERTIA SWITCH

In order to increase the safety of the occupants, in the case of an impact, the vehicle is equipped with an inertia switch located inside the passenger compartment, fixed to the left side panel.

This sensor reduces the risk of fire (as a result of fuel escaping) deactivating the auxiliary electric pump which supplies the injection circuit.

The inertia switch consists of a steel ball fitted in a (tapered) housing and kept in position by the attraction force of a permanent magnet.

If the vehicle is involved in a violent crash, the ball is released from the magnetic clip and opens the normally closed (NC) electrical circuit) interrupting the connection to earth for the electric pump and as a result the supply to the injection system.

To restore the connection to earth for the auxiliary electric pump, the seat must be moved backwards and the switch pressed until it is heard to click.

Even after 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 first search for the cause of the problem and remedy it to prevent the risk of fire.

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
9. Common terminal
10. Normally closed contact
11. Normally open contact