We have a 2005 gx470. My wife was driving to visit my mother in law when the car suddenly died. It will turn over and sometimes acts like its going to start but it will not. I loosened the bolt at the end of the fuel rail and turned on the key thinking at 45-50 lbs of fuel it should squirt . it did not.. I am a old school car guy and have built many a old school cars but this is all new to me.

 

Any codes stored in the ecu? You'd need an OBD2 scanner to check.

 

Nope. no codes.

 

Fuses? Especially the two ECU ones?

Chip H.

 

I will try that in the a.m. I changed out the fuel pump relay. no change. are the ecu fuses under hood?

 

fuses all good. I tested power coming into the fuel pump relay and it was close to zero. tested the relay connection next to it and its at 12v. where should I check next?

 

Have you looked at the wiring diagrams posted in the sticky threads up top?

If they don't have the info you need, a 2-day subscription to TIS is pretty cheap at $20, and you can print the diagrams (or screen-shot them).
https://techinfo.toyota.com/

Chip H.