* Inertia Switch: This is a common safety feature designed to shut off the fuel pump in a collision. It's usually located under the passenger side of the dashboard, often near the fuse box. It's a small, usually red, button that might need to be reset (pushed) if tripped.
* Fuel Pump Relay: The relay controls the power to the fuel pump. If this relay fails, the fuel pump won't run. The relay is typically located in the underhood fuse box. Its location might be indicated in the owner's manual's fuse box diagram.
* Fuel Pump itself: A faulty fuel pump would also prevent fuel from reaching the engine. This is not a cutoff, but a failure point.
* PCM (Powertrain Control Module): The computer controlling the engine can shut off fuel delivery if it detects a serious problem. This isn't a manual cutoff, but a safety measure.
There's no single "fuel cut-off switch" to manually disable fuel flow in the way some older vehicles have. The inertia switch is the closest thing, designed for safety after an impact, not for general use. If you're trying to stop fuel flow for repairs, disconnecting the fuel pump's electrical connector (found at the fuel pump itself, under the vehicle, requiring dropping the fuel tank) is a more definitive method, but should only be done by someone experienced in vehicle repair, with proper safety precautions.
