The tester measures ohm and voltage for dc and ac.
I understand this is not an answer you wanted but it looks like you have a wrong switch. the switch that you have works as follows: pull 1: L connects to 1, pull 2: L connects to 2, pull 3 L connects to 3. pull 4 no connection. the switch you need has to do as follows: pull 1: L connects to 1, Pull 2: L connects to 3, Pull 3: L connects to 1 and 3. Pull 3: no connections. Terminal 2 not in use. check this website they have fan parts for almost all brands.
Let me know if yo find the switch you need. Please DO NOT Accept my answer unless you are satisfied with it and/or I solved your problem. My goal is your satisfactory and Positive feedback.
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