hey guys.... my car is a 94 civic hatch dx... with a d16z6 swap in it. What I currently had in there was a p28 with a vafc1 hooked up to it. My car was broken into and they unplugged my ecu and ripped the vafc1 off the harness. I rewired everything back and had my brother send me an ecu that he bought off a guy from florida and im located in oklahoma. When i plugged the ecu in and i started my car up.... i smelled burning from my car.. after searching for it... it was coming from the ecu that i just plugged in. I opened up the ecu and there's a burnt mark on it.... we'll i guess the pix will best explain itself... but can anyone that have knowledge in ECU please tell me what is burnt, can it be fixed, or is it still usable.
Also i checked for trouble codes and its throwing out a 40.... I have no idea what a 40 is???? If anyone knows what a 40 is let me know.... but as of right now the car can still run with that ecu

thanks


Top View of ECU notice the burnt mark towards the front of the ecu


Closer shot to the burnt mark


something that cracked (anyone know what that is)


rear view of how it is burnt


closer rear view of how it is burnt


i dont think this pix matters but its just the rear cover


Modified by blu3g at 11:13 AM 7/18/2006


Modified by blu3g at 11:42 AM 7/18/2006

 

ttt please help with your input

 

your ecu is gone...i think thats a transitor or a transformer thats fried...you motherboard is also fried...the motherboard has wire thats been pressed on and flattened out...if its still running then its not critical but eventually its going to go out and you might have the risk of an electrical fire....and there is no cel code 40..

 

q31 is not needed, it is evap purge, that ecu may still function perfectly. I have seen q31 burns damage an ecu, but 70% of the time the ecu is fine, that one doesnt look too bad.

If you recently performed a motor swap, a common mistake is to burn q31 on the ecu by mixing up the 2 wire plugs on the engine harness.

(Intake air temperature sensor should be a green wire & red/yellow stripe wire.)

 

thanks for a professional explaination.. i feel at ease now...