My drivers power seat options quit functioning so after searching the forum, I swapped the drivers side module and it is working again.
My old eyes are not so good at examining those small traces on the circuit board so I put it on my flat bed scanner and did a high resolution scan.
I thought some might find it interesting to see just what and where the failure mode is. After looking the board over I checked theses areas with an ohmmeter to check for open circuits but even those the traces look suspect there does not seen to be a break. I will have to continue trying to find the problem.



Scan of suspect circuit board. Zooming in will show the corrosion areas.

 

Daro,
The outer tracks are the usual suspects: it's possible that the board checks out OK when removed as it's not being flexed, although I agree it looks OK.
Try running a thin wire jumper between the two points I've circled.




Is your scanner up to capturing the whole circuit board - both sides?