Fuel pump does not run:

Check the input fuse. A 25A fuse has shown to be adequate for single modules with no voltage increasing
devices (Boost a Pump).
b. Check fuel pressure sensor wiring connections. On the fuel pressure sensor plug Pin 1 = Brown, Pin 2 = Black,
Pin 3 = Grey. Confirm that these wires align with the same wires on the controller GT150 plug. It is possible to
crimp across the insulation of the wire and not obtain a good circuit pathway, hence causing a controller
malfunction.
c. Confirm that a minimum of 10v is available to the VaporWorx blue wire Pin D. 12v + can be applied directly to the
GT150 Pin D blue wire for testing only.
d. Check that the brass nuts for the battery and fuel module power wiring terminals are properly tightened and free
of contamination and corrosion.
e. Check the bottom brass nuts that are under the battery and fuel module ring terminals. The shoulder washers that
act as an insulator may relax over time. Retighten to 10 in-lbs maximum and test.
f. Excessive fuel pressure due to engine shutoff. After ignition shutoff the injectors shut but the pump still spins,
causing a pressure spike. This is normal, but until the pressure drops below the set pressure, the controller will
not send power to the fuel module.
g. Check the temperature of the VaporWorx controller black aluminum lid. If the lid is over 225*F the controller will
shut down.
h. Confirm that the battery and butt-joint connections are good. Use a volt-ohm meter to check connections.
i. Confirm that the input and output main power wires from the battery and to the fuel module are correct/not
reversed.
j. Confirm the controller is connected directly to battery power. No chassis grounds.