The first thing I think of, and sorry if this seems too basic, is the big 40 amp fuse for the aux fan in the main fusebox. Another thought is that if the fuse checks out fine, is I believe that relay in the rear of the fusebox plugs into the botton of either the LF SAM or maybe it's just considered a fuse and relay panel. If the relay doesn't plug into the fuse and relay panel, then the 40 amp fuse does. The problem I've seen is water getting into the fuse and relay panel and causing various electrical problems.

Sorry I'm not all that well versed or at least had alot of experience with this exact setup, I'm more familiar with the 210's with the fan control module in behind the left side of the front bumper, I've tested and replaced lots of those modules.

Gilly

The fuse I'm talking about is called a "Maxi-Fuse", looks like the rest of the fuses in the box but much larger.