Town & Country V6-3.3L VIN R (2003)
Fuel Pump Relay: Description and Operation
FUEL PUMP RELAY
The fuel pump relay is located in the PDC. The inside top of the PDC cover has a label showing relay and fuse location.
The fuel pump relay supplies battery voltage to the fuel pump. A buss bar in the Power Distribution Center (PDC) supplies voltage to the solenoid
side and contact side of the relay. The fuel pump relay power circuit contains a fuse between the buss bar in the PDC and the relay. The fuse is located
in the PDC. Refer to the Wiring Diagrams for circuit information.
The PCM controls the fuel pump relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off
when the ignition switch is in the Off position. When the ignition switch is in the On position, the PCM energizes the fuel pump. If the crankshaft
position sensor does not detect engine rotation, the PCM de-energizes the relay after approximately one second.
