Fuel Delivery System

Fuel System Schematic:

COMPONENTS
The fuel system consists of a fuel tank with reservoir, fuel pump assembly, fuel supply and return lines, fuel filters, fuel rail, fuel injector, and fuel pressure regulator.

OPERATION
When the ignition switch is in the ON or START position, power is supplied to the fuel pump relay and to the Powertrain Control Module (PCM). The fuel pump is commanded on by the PCM grounding the coil in the fuel pump relay. The fuel pump is turned on via the Inertia Fuel Shutoff (IFS) switch whenever the ignition switch is in the ON or START position. If the PCM detects that the engine has not started or has stopped, it will turn off the fuel pump after 1.5 seconds. This is done to reduce the risk of draining the battery and damaging the fuel pump. The IFS switch is a safety device which interrupts fuel pump power in the event of a collision. If the IFS switch is "tripped," it must be reset by depressing the button on top of the switch. The switch is located on the LH side of the kick panel, below the hood release handle.