Fuel Tank: Description and Operation

WARNING: DO NOT SMOKE, CARRY LIGHTED TOBACCO OR 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, RESULTING IN POSSIBLE PERSONAL INJURY OR FIRE HAZARD.

The vehicle utilizes a returnless fuel system consisting of:
- the fuel tank.
- a fuel tank filler pipe which contains a restrictor plate to permit only unleaded fuel to be pumped into the fuel tank.
- a 1/8 turn fuel tank filler cap.
- a fuel filter providing filtration to protect the fuel injectors.
- a single fuel line accommodating the returnless fuel system.
- a fuel injection supply manifold which contains a differential pressure sensor and a fuel temperature sensor.
- a fuel pump which provides pressurized fuel to the engine and contains:
- a top mount bottom sense fuel delivery module that consists of a top flange with a spring-loaded bottom sense fuel module.
- a serviceable fuel level sensor.
- an inlet filter.
- a check valve which maintains system pressure after the pump is shut off.
- a pressure relief valve for over pressure protection in the event of restricted flow.

The fuel pump is controlled by an electronic fuel delivery module which is enabled by the Powertrain Control Module (PCM). Electrical power to the fuel pump is provided through the Inertia Fuel Shutoff Switch (IFS switch), which is located on the LH B- pillar.