* Inertia Switch: This is a safety device that shuts off the fuel supply in the event of a collision. It's typically located under the dash, often near the driver's side knee area or under the driver's seat. This switch is resettable.
* Electronic Control: The primary method for shutting down fuel to the engine involves turning off the ignition. The fuel pump is controlled by the Powertrain Control Module (PCM), and turning the key to the "off" position cuts power to the pump.
There's no easily accessible manual shut-off valve. If you need to completely shut off the fuel supply in an emergency, disconnecting the fuel supply line at a convenient point (if you have the skills and know the risks involved) would be the way to do it, but this is not recommended unless you are properly trained and equipped.
Before attempting any fuel system work, always consult a repair manual and take proper safety precautions. Working on a diesel fuel system has inherent risks.
