P3190, p3193, car sitting for long time

Hello all, looking for a clue. Where do I start troubleshooting gen2 2006 Prius

Tl;Dr. Getting p3190 and p3193 codes. Car doesn't seem to want to run in maintenance run diag mode. Unless I am not actually getting it in that mode.

The car ran fine before it was neglected/sat unused, except for bad modules in traction battery.

Background: hv traction battery was pulled and car sat for well over a year, maybe two the way time goes.

I replaced the traction battery and 12v battery. The car started up and ran poorly for a few seconds then shut off. It won't seem to run for more than a few seconds at a time. I added a few gallons of fresh gas, as that was in the tank is likely very stale; shows about 4 bars on fuel gauge.

Where should I start troubleshooting? I suspect that the engine is not running long enough to keep the traction battery charged. I do have another Prius (daily driver) that I can swap the traction batteries back and forth to keep charged, but that is a huge pain.

Any advice on what to troubleshoot first would be much appreciated. I suspect bad fuel, varnish, etc. in fuel system....where do I start?

 

Not sure if fuel is getting to engine. I disconnected a line (I think it is the fuel line at back right side of engine) and connected hose to drain into gas can When I put into ready mode, no fuel is pumped into a waiting gas can. I also removed the rear seat to gain access to the fuel sending unit. I can not hear the pump running when put into ready mode.

Is there a way to make this pump turn on and pump fuel out of the tank?

 

I cleaned the TB using seafoam and swapped out the MAF with one from my other Prius. Put into ready mode without starting ICE and cleared codes using torque app and odb2. Started ICE, which ran poorly and then quit...red triangle and set code p3190.

How do I test the fuel pump?

 

Last update for the evening:
1. TB and MAF cleaned or swapped with no improvement.

2. Started fluid used when trying to start car...seemed to improve rmp smoothness, but ultimately could not keep the engine running. It stopped again after a few seconds with red triangle, p3190 set and p3193 pending.

I think I need to test the fuel pump next? How do I do that?

I will also need to swap the traction battery with the one in my wife's Prius so that it can be charged...I am probably close to it being drained pretty low.

All will have to wait until Friday. Thanks for your help so far

 

hello all, and thanks again for your help. It has taken a while to get back to this project.

I checked the fuel pump according to the service manual. I have about .8 Ohm across terminals 3 and 7 on the pump connector. But when I connect 12v power to these terminals, I cannot hear the pump running. How loud is the pump? Should I be able to hear it running?

edit: I have not checked the ECU or relay terminals yet.

 

Ok, I tried to jump the fuel pump again, at the connector as before, just as your pic.

Either the hum is below the threshold my 55 year old ears can hear, or it is snot working. The pump coil ohms out good per the tech manual and I get sparks on my cobbled test lead, suggesting that it should work and is drawing current.

Is there another way to test that the pump is actually running and pushing fuel through the lines? I do not have a techstream device