I have never actually tested mine, but there should be a red output light coming on when you pull the sled over. It is on the right side of the module when looking at it from behind the handlebars. That is all I know.
If it is an Artic Cat than open the hood and look for a little window on the efi box. Watch the window and turn on the key if it flashs once then everything is ok, if not let me know what code it does flash and I can tell you what it means. The other thing does your efi use a battery? If it does then when you turn on your machine you should hear the fuel pump prime the system, if you don't then you may just need a new battery.
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