Can someone tell what these resistors are for, q31 was already fried before I acquired the car.
i have been looking literally searching everything possible to find a diagram of the circuit board and found nothing. If anyone can tell me what I fried I would greatly appreciate it! Thank you!

p.s I went to start the car after about a month (it’s a project runs like crap still haven’t done anything with it) it wouldn’t start sprayed some starting fluid and it fired up ran for a couple seconds and died and then after a couple try’s I noticed the ecu smoking.

 

Also looks like it’s c13 and c12 that Fried. And this was an auto p06 that I re soldered, worked fine when I first did it had no issues just cel for o2

 

Looks like multiple leaking and burned capacitors (C) and two burned transistors (e.g., Q31). Someone likely accidentally swapped sensor connectors during an engine installation.

The ECU may or may not be reparable.

 

I am confident that you let the "Magic Smoke" out of that one... find another P06. That one is toast and isn't coming back. Pronounce it dead and move on.

 

Oh yeah it’s toast haha, just wanted to see if anyone knew what c13 and c12 were

 

Did that burn after you soldered it?

 

Haven’t been in here in a few weeks been working a lot:/ but yes it fried after I soldered it, work fine the first day and went to start it again and it fried, I was very careful with soldering it to, but I’m assuming I did something wrong then?

 

I would say that is a pretty good assumption.

 

Post zoomed in pictures of your solder work.