2003 F150 Fuel System. Ford Fuel System. The worst complaints are smell of gas in the cab fuelpropulsion system and fuel system gasoline.
Higher amperage battery voltage is sent through the fuel. Fuel System Repair Manual. Ford uses a fuel pump relay to control the fuel pump assembly in its 2003 F-150 series trucks.
The relay receives low amperage battery voltage through the powertrain control module which energizes the primary windings in the fuel pump relay and closes the normally open circuit in the relay.
Table 1 shows five common gasoline fuel system related problems of the 2003 Ford F-150. 2003 Ford F150 Specifications 2003 Ford F150 Technical Specifications. Higher amperage battery voltage is sent through the fuel. Ford F-150 2003 Fuel Pump Relay Connector by Motorcraft.
