Ford Transit 2002 Owner's Manual page 1391

by means of a rigid wire lever. The resistor card has two electrical elements. One element is
solid and one element is a variable resistor. The resistance value created by the resistor
card is sent to the central junction box (CJB) through a hard wired circuit. The CJB
distributes the information from the fuel pump and sender to the instrument cluster and the
powertrain control module (PCM) using the controller area network (CAN) circuits.
The fuel pump and sender resistor card can be susceptible to contaminated fuel, which can
affect electrical continuity. This condition is normally temporary and self-rectifying. If the
fuel pump and sender has been removed, moving the rigid wire lever from empty to full a
minimum of 10 times will normally be as effective as installing a new fuel pump and
sender. The most common symptom of contamination occurs after refuelling where the
electrical contact moves to an area of the resistor card which has not been used for several
days. This results in a very slow movement of the fuel gauge pointer from empty to full
over approximately 15 minutes. In more extreme cases where the resistor card resistance
is continuously outside the permitted range for more than 33 seconds, a DTC will be set in
the CJB and the fuel gauge pointer will fall to its key-off position. In all cases where the fuel
pump and sender is suspected of being inoperative, worn or damaged, the Worldwide
Diagnostic System (WDS) diagnostic procedures must be followed before any parts are
dismantled.
The fuel pump supplies fuel to the fuel charging system at a constant regulated pressure.
The fuel pressure is controlled by the fuel pressure regulator, built into the fuel pump fuel
return circuit.
The fuel pump and sender also incorporates a fuel jet pump. The return fuel from the fuel
charging system is passed through a venturi in the jet pump which causes a pressure drop
across an open orifice. This draws in fuel through the base of the unit which then passes
through the sock filter to the fuel pump.
Fuel Filter
This vehicle is equipped with an in line fuel filter. The fuel filter is located to the rear of the
fuel tank and is secured to the vehicle chassis with a support bracket.
All vehicles
Fuel Tank
The fuel tank is of a plastic construction and has the capacity to hold 60 liters of fuel. The
fuel tank is secured to the vehicle by two metal support straps bolted to the underside of
the vehicle.
Fuel Tank Filler Pipe
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