06 Prius not starting, low battery?

Multi meter shows 11.7 at the batter under no load. It just came off the charger 2 days ago

 

Battery is on the charger now. I'll check it in a little bit

 

I just took the battery off of the charger and it was reading a steady 12.4 volts, but no change. I disconnected the battery and I will leave it that way over night to see if that resets anything. The key is still not being recognized when put in the slot and the car still will not start even when using the key as a smart key. Could a low h/v battery cause the car not to start?

It's odd to me that the car started (ICE cranked and I was able to shift into Drive) earlier this evening and now it will not even attempt to start. Earlier today I soldered in a new plug for my transmission sensor closest to the firewall (I smashed it when putting the new trans in), once I finished that I put the inverter back in. Once the inverter was bolted down and plugged in, I tried starting the car...and it started on the second push of the power button. So I made sure it was not a fluke and I started it one more time...again it started on the second push of the power button. So once I saw it start twice I put wipers back on, and lowered the car from the jack stands...and now it wont start.

 

So this morning the battery showed 12.32 volts this morning. I am still getting the same no start condition, and I scanned the ecu again with my OBDII scanner and it is still showing the same three codes (P0A3F, P0A40, and P0A41)...this was with the battery being unplugged overnight, so they are not going away. I also tried to erase the codes with my scanner and the car dinged at me and the display screen said "problem".

What is the motor resolver sensor?

Yes the engine ran, I heard it start up and exhaust was coming out of the tail pipe. The first time I started it it ran until the engine turned off (~10 seconds or so), I shifted it into drive while the front end was lifted on jack stands just to make sure it would work and the Prius went into drive and the wheels started turning, so I hit the brakes to stop the wheels from spinning and put the car back in park, after I did that I turned the car off. Then I started it one more time to make sure it was not a fluke, and the car started again...this time it only ran for about 5 seconds...so I turned the car back off and took it off of jack stands, and put the wipers back on, because I assumed it was ready for a test drive...and now the car will not start.

*edit* also, before I repaired the harness going to the sensor on the trans by the fire wall, I tried starting the car without that sensor plugged in...not sure if these codes are a result of me trying to start the car with out that sensor plugged in. Also, not sure if this is worth mentioning that I also tried starting the car several days ago with out the service plug locked into place...not sure it that would mess with anything or not.

 

Thanks for the reply, but I sti don't know where the resolver sensor is located. Can you point me in that direction so I can narrow down the area I am looking at? Thanks for the help so far

 

I think I know which sensors they are I was just hoping someone more familiar with this could point me in right direction. I think the two sensors that you are talking about are the two that are on the lower portion of the trans facing the radiator when installed in the vehicle. When swapping my new trans in the junkyard had cut the MG1 and 2 cables so I had to swap those over. In order to do this I had to remove the rear trans cover, and when put the cover back on the sensor closest to the diverside fender well had very little slack. I did not think anything of it until now, maybe that harness could have ripped when the car started?

*edit* I am curious too, even if that sensor was not working would that stop the car from trying to start? Anyone know?

 

Do any of the warning lights on the dash indicate that the hybrid ecu is causing the car not to start?

I plan on pulling the sensors out on the radiator side of the trans (I think those are the sensors you are talking about) to see if the wiring is still intact.

Does anyone want to do me a favor? If so please unplug one of ^^ those two sensors at a time and see if you can replicate the problem I am having. Thanks in advance if anyone is willing to do this.

 

okay, I am starting to work on this again. Today I got the car to start several times while it was on jack stands. So I put the wheels back on the car and put it on the ground and it would not start again. I was having issues with the 12volt battery being low so I hooked up my jump box to it, and I was having the same issue. When I was getting ready to give up on it I tried it one more time and the car started so I put it in drive, the ICE was running fine but the car was really having trouble moving forward. I pulled just out of my garage where there is a slight incline and the car would not go any further. It just sat there running, and not able to move forward on it's own power. So I put it in reverse and the car would not move because there was a slight lip it needed to go back across to get it in the garage. Anyway I left it in neutral and pushed it back in the garage. The dash is lit up like a Christmas tree even when the car is running. Any ideas or do I just have a bad trans??