"...Is there a way to test/power up the pump without pulling it out?..."
The pink wire running into the top of the fuel pick up assembly is the pump power wire. If you follow that pink wire away from the pump you should find a disconnect somewhere around the LH rear wheel tub. That's a convenient place to connect your meter and test for momentary 12v when you first turn the ignition on.
Conversely......
You can run a temporary jumper wire from the battery + post and connect it to the pink wire at the pump side of the disconnect to see if the pump will then run.
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