* Crash sensors: The car's various crash sensors trigger the deployment of airbags and other safety systems. These sensors *indirectly* affect fuel delivery by potentially cutting power to the fuel pump or triggering other safety circuits. There's no single, dedicated switch or easily identifiable component you can manipulate.
* Fuel pump inertia switch (sometimes): Some vehicles *do* have an inertia switch, but it's usually hidden and not readily apparent. The 2000 Ford Focus is less likely to have this style of readily accessible switch compared to some other makes and models. If it *does* have one, it would be located somewhere under the dash or in the engine compartment, possibly near the fuel pump relay. Finding its location would require consulting a repair manual specific to that year and model.
In short, you won't find a readily accessible inertia switch like you might in some other cars. If you suspect a fuel system problem after an accident, you should take the vehicle to a qualified mechanic for diagnosis and repair. Trying to locate and manipulate a potentially non-existent switch could be unproductive and even dangerous.
