There WILL be fans. To see them you'll have to be on a ladder looking down into the upper vent. The thermostat for them is a small disk-like thing screwed to one of the upper fins with two wires. Putting a jumper across the two wires should make the fans run. Thoses sensors are VERY prone to failing.
https://www.ebay.com/itm/Norcold-618093-Cooling-Fan-Refrigerator-Thermostat/162493721250?epid=1027921925&_trkparms=ispr%3D1&hash=item25d5616aa2:g:m-4AAOSwRJpbczx7&enc=AQAEAAAB8BPxNw%2BVj6nta7CKEs3N0qVwB%2F46Aob8b2mgyxZi30ekzeHmNVqUG48cztUnAXkgzniF5wv46Z58Vl6Qr5qOQ3YLOQrNHlsdg6h2jFEYYX9RdhFxJJ932g8FGwRVd1cmOcBZOZlVsQvqsHBNW4IuLUwf9yIEYKO77cCVdSZUkBRoHrThxWEPGvEQvvs%2BJtzjn3zzT3%2BCpL3KJwItPF6L7mgUbVvro6yWJK%2FK1YPBZTxHkbOSY1qEcMm%2F4oXGVEqdqGlWVlzhidWWwwwf1gmqeFFlNmr6ZMm%2BcLh7G5KR5eq51cd4h%2B4d7YFr83wr7v84zd3AFGq%2BAbJkFWaC%2Ff08g932f2Ccgi%2BoqUTEDVWk%2BsjMGZnw8lxKDXk57DzYmrMP8qMHo8M6QkjEH9Y3Qzzq7rz0QiX1FIOgQtsPOl18bM9y7VHSFKPGuiqpQF3M98vJWATmA4AyVy%2FjKL%2BQLRVyvh5YKeq9rgcPa4UcLAt10uqQODJdtS%2Fpt%2B%2BMOLnwGaEsw2Ek5c4cVbrjXBqRW7nCKn9I898rCLoM90f7Y6dPAzn3%2FNLZPVjymvaipRYU3VqoD2vzEv9OMUY17Y2%2FVgdetr%2BYxv9zn6sIiOYWY%2FsX6srbtkarVvJIAqcTa6F%2FeYAE1L11znClLT%2Ff4RhsPfth%2FqQ%3D&checksum=16249372125048006aa4fcfe426698d7f290c1e6f5b0