Fuel System
WARNING:
Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions can result in personal injury.
WARNING:
Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions can result in personal injury.
The fuel system consists of:
- a fuel rail.
- a multi-port fuel injection (MFI) system.
- a standard fuel tank.
- fuel tube bundle.
- a fuel tank filler pipe assembly, which cannot be modified in any way.
- a 1/4 turn-type fuel tank filler cap.
- an inertia fuel shutoff (IFS) switch.
- a fuel pump module (FPM) containing:
- the electric fuel pump, which provides pressurized fuel to the fuel rail.
- the fuel level sensor.
- a check valve, which maintains system pressure after the pump is shut off.
- a pressure relief valve for overpressure protection in the event of restricted fuel flow.
- an in tank fuel filter providing filtration to protect the fuel injectors from foreign material.
- an individual fuel level sensor, all wheel drive (AWD) vehicles only.
The fuel pump is controlled by the powertrain control module (PCM). Electrical power to the pump is provided through the IFS switch located under the right front kick panel.
The AWD vehicles have 2 fuel level sensors, one on the fuel pump (FP) module located in the LH side of the fuel tank and a separate fuel level sensor located in the RH side of the fuel tank.
The engines are equipped with sequential multi-port fuel injection.
The fuel pressure is regulated to a constant pressure by a pressure regulator.