Ford 5.8L California Fuel Pump Module Wiring Diagram - Engine Controls 25-12

This document is a page from a factory-style wiring diagram set, labeled "25-12 Engine Controls, 5.8L (California)". It shows the fuel pump circuit for the California-emissions 5.8L engine. Power comes from connector C202 (referenced on page 25-7) via circuit 238 (DG/Y wire) to connector C271 and the Inertia Fuel Shutoff switch, which opens on impact. From the shutoff, circuit 787 (PK/BK wire) carries 12V (switch closed) through connectors C205F/C205M and C441F/C441M to the Fuel Pump Module. The module contains the fuel pump motor and the fuel level sender, a variable resistor reading 22.5 ohms when empty and 145 ohms when full; the sender signal goes to the instrument cluster (page 60-1) on circuit 29 (Y/W wire). Ground paths leave the module on circuits 57 (BK) and 89 (O) through C441M/C441F, join at splice S400, and continue on circuit 57 BK to ground G100 (see grounds, page 10-3). A callout explains that the module supplies fuel under pressure to the fuel rail and injectors. The page gives circuit numbers, wire colors, connector IDs, voltage conditions, and resistance specs useful for diagnosing fuel pump or fuel gauge problems.