310-00A Fuel System - General Information - 1.6L Duratec-16V Ti-VCT (88kW/120PS) - Sigma	2014 Fiesta
Description and Operation	Procedure revision date: 03/26/2013

Fuel System - Overview

Overview

The fuel system:

is a 2-speed Mechanical Returnless Fuel System (MRFS) with sequential MFI Multi- Port Fuel Injection (MFI).
uses a single-container (L-Shaped) fuel tank.
has a in tank Fuel Pump (FP) and Sender Unit that supplies fuel under pressure to the fuel rail.
has a lifetime fuel filter (serviced as part of the Fuel Pump).
has an Easy Fuel™ (capless) fuel tank filler pipe assembly, which cannot be modified in any way and is serviced only by the installation of a new fuel tank filler pipe assembly.
has a supplemental refueling adapter located in the luggage compartment.
has a FP module that operates on 10 or 12 volts depending on load, that supplies fuel under pressure to the fuel rail.
has a FPDM located under the carpet below the RH rear seat.
has fuel tubes (liquid and vapor) along with brake tubes mounted on the underside of the vehicle in a bundle.
uses separately controlled fuel injectors for each cylinder. The fuel injectors are mounted to the intake manifold and are supplied with pressurized fuel from the FP module to the fuel rail.
fuel rail pressure is controlled by the electronic FP module which is enabled by the PCM.
has a serviceable fuel level sender mounted on the Fuel Pump Module.

Fuel Pump Shut-off Feature

NOTE: Refer to the Description and Operation, Intelligent Access with Push Button Start in Section 419-01A to review the procedures for achieving the various ignition states (ignition OFF, ignition in ACCESSORY, ignition ON and ignition START) on vehicles with this feature.

In the event of a moderate to severe collision, the vehicle is equipped with a Fuel Pump and Sender Shut-off Feature that is initiated by the event notification signal.

The event notification signal is a signal provided by the RCM to the FPDM . Signal communication between the RCM and the FPDM allows the PCM to shut-off the Fuel Pump.

Should the vehicle shut off after a collision due to this feature, the vehicle may be restarted by first turning the ignition to the OFF position and then turn the ignition to the ON position. In some instances the vehicle may not start the first time and may take one additional ignition cycle.