tried to check the codes and the check engine light didn't even come on,gonna see if the lights disabled or burnt out.took the ecm back apart and I did notice a difference in the board coming in at the plug but i'm not a expert by any means I don't even no what i'm looking at.Just looks a little dark,but no fishy smell.
I wouldn't be surprised if you found that there isn't a bulb at all in the CEL socket.......some people aren't smart enough, are too lazy, or just don't take the time to fix whatever causes the light to come on....so they just pull the bulb out and forget about it.
You know what electrolytic capacitors look like don't you? Around those are where the board will look different, if they have been leaking. There are 4 of them. They are the shape of miniature cans (round and cylindrical) if you don't know what they look like. If you take the cover off, and hold the board up with the plug connections at 6:00, there is 1 big capacitor in the lower left hand corner of the board. The other 3 are kinda in the center of the board, just up from the left edge of the white plug.
The caps could be bad without leaking on the board or smelling fishy, but that is a definite sign that they are bad.