Fuel System

Fuel System







The electronic returnless fuel system utilized has the following advantages:
- reduced fuel tank vapor.
- requires less electrical power.
- does not require a fuel return line.

The intelligence of this system is contained within the powertrain control module (PCM).

The PCM determines the required fuel flow and communicates this information to the rear electronic module (REM). The REM has the fuel pump driver functions fully integrated into the microprocessor. The fuel pump relay is activated by the PCM power relay and provides a fused power supply to the REM. The PCM and the REM calculates the frequency and determines the current required by the fuel pump to maintain the correct fuel pressure at the fuel injectors.

The fuel tank is of a saddle design which incorporates two pump/sender unit assemblies. The right-hand side houses the fuel pump module and the left-hand side houses the fuel transfer pump.

Fuel is supplied at high pressure to the injectors via a fuel rail which incorporates a fuel pressure and a fuel temperature sensor. The PCM increases the fuel pressure to minimise fuel vapor formation to maintain fuel flow across the injectors. An inertia type fuel shutoff switch will cut power to the fuel pump in the event of an accident.