Thanks to the original poster for this information and excellent instructions.My module had the problem in the exact same location.As stated,repair took all of twenty minutes.My wipers now function on delay settings and return to park position when turned off.
since this thread is five years old i dont mind chiming in with my two cents. my intermittent settings (all of them) havent worked since i bought my 93 grand a few years ago. only low and high worked and every delay setting ran at the ''low'' speed and would stop at any position when i turned them off. in the last few days, i replaced the motor which was not the problem as i was misinformed, then the multi function stick which actually changed one thing, now the wipers will not park at the bottom, but only return to vertical. i cannot see any burned traces on the intermittent control module so i tried just plugging the two harnesses together which yielded smoke from the multi function stick but no different action, still only parking vertically. i am now going to check the ecm connection harness as one of you stated earlier that it could be the culprit. i will update as, who knows, maybe i will be the first to be experiencing something other than a torched board or loose connection.
It was bumped while I was sitting around waiting for friends to get off work for beers. 15 minutes later I got fully functional delay wipers that park themselves instead of just lo/high and no parking.
Tip for noob solderers......mine was bad in the exact same place as the OPs. It's hard to solder onto the flat circuit board but easier to solder onto those posts. Follow the circuit and make a one inch jumper wire from post to post across the burned spot. Less risk of dripping solder onto a nearby circuit, causing a short.
Just a side note, my 93 ZJ was not the wiper module, but dirty contacts on the wiper switch which is much more fun to get out and apart. Cleaned up the contacts and it has been working perfectly ever since.