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Fuel filter/water separator
Fuel is delivered through the fuel supply lines to the fuel filter/water separator. The fuel filter/water separator cleans the fuel of water and contaminants. Unused fuel is returned to the fuel tank through the fuel filter and through a fuel cooler (if equipped).
When the temperature is below 15°C, a valve inside the fuel filter opens allowing fuel which is pre-heated by the fuel injection pump to be recirculated back through the fuel filter to the fuel injection pump. This aids engine performance during warm up.
All except Vehicles with 120 PS Diesel Engine with EGR
Fuel is drawn from the fuel tank by the fuel injection pump which then supplies high pressure fuel to the fuel injectors.
Vehicles with 120 PS Diesel Engine with EGR
The fuel is pressurized and regulated by a fuel lift pump located on top of the fuel filter and delivered to the fuel injection pump which then supplies high pressure fuel to the fuel injectors.
Vehicles with 2.3L Engine
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Inertia fuel shutoff (IFS) switch
The fuel pump module is located inside the fuel tank and pressurizes the fuel. This pressurized fuel is then delivered through the fuel supply lines to the fuel filter. The fuel filter cleans the fuel of contaminants and then delivers the clean fuel to the fuel injection supply manifold. Unused fuel is returned to the fuel tank through the fuel return lines.
All except Vehicles without EGR
An IFS switch is fitted to enable the power to the fuel injection pump and fuel lift pump to be cut in the event of an accident. The IFS switch may be reset using the reset procedure found in the Owner's Literature.
