Toyota Repair: 97 Geo Prizm fuel pump will not operate., fuel pressure gauge, fuel pump relay

Question
QUESTION: I recently took a Prizm off of my girlfriends parents.  It has 250K on the clock but up until January of 2007 it was running perfect.  They bought a newer car and let this one sit until this past May when I got it.  When I got it and it would not start.  Replaced fuel pump, fuel pump relay (open circuit relay i think its called), and check as much of the wiring as I could find.  Checked PNP and it seems to be working correctly.  I am worried that the ECU went bad but I am on a budget and already dumped quite a bit into the car.  Do you think I need an ECU?  If so, does it need flashed by a dealership?

ANSWER: I'm going to need more information to resolve this issue.
How did you determine the pump was bad in the first place?
Did you put a fuel pressure gauge on the rail then and now?
If its really not working you must double check all the wiring
and the ground. Check the ground at pump with an ohm meter, other end
of meter probe directly on frame.

Tim



---------- FOLLOW-UP ----------

QUESTION: The fuel pump never worked.  I would turn the key and it would not prime, even at the initial start up after it sat the fuel pump never primed.  Like an idiot I got a new pump and still no luck.  Relieved pressure when installing new pump and upon starting the car, the pump never primed.  Recently I found out there is no power to the pump at the relay and there is no signal from the ECU to the relay when the ignition is turned to the "ON" position and the engine light remains on as well.  There is a signal from the starter when cranking however. All fuses checked.  EFI and fuel pump relay replaced prior to my latest discovery.  TPS is good, and as far as I have found I have good wiring as well.  The wiring between the ECU and relay I am not 100% sure of but it seems O.K.

Answer
Jay,
First of all, make sure you have good ground from the pump to ground, use an ohm meter. If ground is good then get
a good schematic for the car and that specific year. The wire from the ECU to the relay can be easily checked with an ohm meter, if that wire is OK then disconnect the positive post on the battery. Get access to the ECM,  disconnect the connections from the ECM one at a time, and plug them in. Now, hook up the battery and try starting again.

Good luck,

Tim.
ToyDoc