Well as I was driving home this afternoon my check engine light came on. So I decided to check it myself. When I took out the plastic cover and look at the ecu there was no screw. The only thing it says is idle speed adjustment on it. It doesnt say diagnostic on it???? I have a 99 SE-L could that be why my ecu doesnt have that diagnostic screw? Thanks in advance!

 

That's correct, SELs don't have a screw. I don't know how you guys are supposed to reset the CEL but im sure someone does.

 

Yeah, you need to go to AutoZone. They can pull your codes for free with the computer.

You are out of luck, you can't check it yourself.

 

Thanks for the quick replies guys. I was starting to think some maybe broke the screw off or something. Anyways I will just go to autozone tomorrow and find out what the code is

 

i read a thread that the screw is actually there. but is too small so u'll need a precison screw driver? can you take a picture of it please? i think i might start a page with ecu's

 

Yes the screw is there, look inside the hole. The screw is a phillips and it is white.

 

It really isnt a screw...OK well it is..LOL..its is a scew that in located in the hole of the ECU...all u do is turn in clockwise and counterclockwise about 3/4 of a turn each..You never totally screw it in or out.