Aux fan relays did not have built-in fuses on top until 94/95 E class.
The fuse for 93 is #7 in the fuse box... Spin it in the holder.

Again, simply jumper the pigtail switch @ drier w/key ON for low fan circuit test.... or touch 12v to the terminals of the pre-resistor for low/high test.

Low fan relay is slot D and high is in slot C.
Marked right in the relay box.

Both jumper test take 2 secs to do and the results of the test will tell you which way to go from there.

Get those results and I will tell you the next step.

Or use the search function ...I have step by step instructions in archieves.

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A Dalton