Alright, in that case, it's the transfer pump or transfer pump switch at fault. Here's troubleshooting steps from the book:
![image.png](https://groups.google.com/group/323gtx/attach/7197bc69b49a3/image.png?part=0.1&view=1)
![image.png](https://groups.google.com/group/323gtx/attach/7197bc69b49a3/image.png?part=0.2&view=1)
The fuel tank is shaped like a saddle sitting astride the driveshaft. It has one fuel pump which pushes fuel to the engine, which is on the driver's side of the vehicle, and one transfer pump which pushes fuel from the passenger's side to the driver's side in an attempt to keep fuel around the main pump. There are two fuel sensors in the fuel tank: one per side. Each sensor has a float arm which gives a variable resistance to the ECU based on the float position. This signal is added together by the ECU, and the result is displayed on the fuel gauge. The fuel level warning light only monitors fuel around the engine fuel pump side, so if the light illuminates, that means you are about to starve your engine of fuel, regardless of the fuel level shown in the tank.
In order to resolve the problem, you will want to look at the transfer pump. First, you can follow the instructions above: turn the ignition key "ON" (don't start engine). According to the instructions, you should hear the pump running. When you short the two terminals in the third image (short BG >B) with a piece of wire. Since the transfer pump should be considered "on" all the time, if you don't hear the transfer pump kick on (You will have to listen intently. The transfer pump is outside the fuel tank, under the vehicle. It will be more easily heard through the hole you opened under the passenger's side rear seat, and the hoses are visible there as well), then you have a transfer pump problem. Working with the transfer pump is kind of a pain because of its location on the fuel tank (under a protective plate, attached to the upper side of the fuel tank I believe), but it's not the worst thing. If you need to replace it, any transfer pump that will fit in place is acceptable. It's not an in-tank pump, so there's a few options out there that will fit the location. You will need to splice in the GTX connector, but that won't be too bad. Careful for soldering near the vehicle with open fuel lines though.
Any questions, let me know.
-- Joel