B3000 2WD V6-3.0L OHV (1994)
Fuel Pump Relay: Description and Operation
PURPOSE
Provides the Powertrain Control Module (PCM) with a means of controlling Fuel Pump operation.
OPERATION
When the ignition switch is turned to the Start and/or On position, the PCM closes the ground circuit to the Fuel Pump Relay, which then provides
power for the Fuel Pump.
The PCM monitors engine speed and Opens the Fuel Pump Relay ground circuit if the engine speed drops below 120 rpm.
