Fuel System - General Information

FUEL SYSTEM

WARNING:
- Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
- 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 component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
- Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this instruction may result in serious personal injury.
- When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.

The fuel system consists of:
- a mechanical returnless fuel system.
- a fuel rail.
- a multi-port fuel injection (MFI) system.
- an all wheel drive (AWD) saddle-type or front wheel drive (FWD) L-shaped fuel tank.
- fuel, vapor and brake tubes in an integrated bundle assembly.
- 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 separate fuel level sensor assembly on AWD saddle-type fuel tank.
- a fuel pump (FP) module containing:
- the electric FP module, which provides pressurized fuel to the fuel rail.
- a serviceable fuel level sender.
- a check valve, which maintains system pressure after the FP module 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.

The FP module is controlled by the PCM. Electrical power to the FP is provided through the IFS switch located under the left rear quarter trim panel.

The engines are equipped with sequential MFI injection.

The fuel pressure is regulated to a constant pressure by a fuel pressure regulator.