Fuel System - Overview

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Overview

The fuel system consists of the :

A Saddle type fuel tank.
A Closed Loop Pressure Control Fuel System (CLPC).
Quick connect fuel and vapor tube couplings.
A supplemental refueling adapter located in the luggage compartment.
A Fuel tank filler pipe assembly, which cannot be modified in any way, that also contains a restrictor plate to permit only unleaded fuel to be pumped into the tank.
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.
Two Fuel Pump Control Modules located under the rear quarter panel LH side of the vehicle.
Fuel Tank Pressure (FTP) sensor (part of the fuel vapor tube assembly).
Fuel Pump and Sender Unit containing:
- Two electric Fuel Pumps which provide pressurized fuel to the fuel rail.
- a serviceable Fuel Level Sender.
- a check valve which maintains system pressure after the pump is shut off.
- external fuel filter, mounted on the underside of the body providing filtration to protect the fuel system from foreign material (if equipped).
- a pressure relief for overpressure protection in the event of restricted fluid flow.

Fuel Pump Shut-off 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 feature provides other vehicle subsystems with information pertaining to restraint system deployment or fuel cutoff status. When an impact occurs which exceeds a predetermined threshold, the RCM sends a signal on a dedicated circuit to the BCM. The BCM then sends a signal on a second hard-wired circuit to the PCM, which initiates fuel cut-off and disables the fuel system.

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.