3500 4x4 Pickup L6-359 5.9L DSL Turbo (1996)
Fuel Pump Relay: Description and Operation
Circuit A14 from fuse 8 in the Power Distribution Center (PDC) supplies battery voltage to the contact side of the fuel pump relay. Circuit F18 from fuse
9 in the fuse block supplies battery voltage to the coil side of the fuel pump relay The Powertrain Control Module (PCM) provides the ground path for
the coil side of the relay on circuit K51. Circuit K51 connects to cavity 51 of the PCM connector.
When the PCM grounds the fuel pump relay and the contacts close, they connect circuits A14 and A61. Circuit A61 supplies power to the fuel pump
motor.
