As 83Grumman stated, there is more involved with the fuel pump than just the relay. See attached diagram.
I believe that the "Fuel Heater Shutoff Switch" is mislabeled. "Fuel Pump Shutoff Switch" is probably a better description.
It combines signals from the BCM and the Powertrain Control Module. What generates those signals is anybody's guess.
I believe that the "Fuel Heater Shutoff Switch" is mislabeled. "Fuel Pump Shutoff Switch" is probably a better description.
It combines signals from the BCM and the Powertrain Control Module. What generates those signals is anybody's guess.