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First thing that I would ask you is does the fuel pump cycle when you turn on the ignition? If not, make sure that the kill switch is in the on position and try again. If it still isn't cycling, you can try unplugging it's connector and applying a very brief pulse (1-2 seconds) of reverse polarity power to its terminals with jumper wires attached to the battery terminals or better yet, a PowerProbe. This will cause the pump motor to turn in the opposite direction than it normally does and hopefully break it free from any debris or gummed fuel that could be in it.
Given the length of time that the bike has sat, I would also replace the gas in the tank with fresh fuel, as well as install a new fuel filter. Another user on here recently experienced issues on a 2016 RX3 he had just purchased, with 1200 miles on it, IIRC, where the fuel filter came apart internally, most likely due to water in the gas dissolving the water based glue that is used to hold the filter element in place inside the filter canister. This choked off the fuel to the injector and cause the engine to lean out badly, lose power, and eventually die. Even though you are in Arizona, a dry climate, the ethanol in the gasoline can, and does, attract and retain moisture over time. You may be experiencing something similar.
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