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yes, you should hear that whine every time. That pressurizes the fuel rails. you can test the pressure with a guage you get at an auto parts store. look for the valve (just like you see on a bike tire) on the fuel rail.
And I am not 100% sure but I'd bet your pump is in the tank.
I have one truck with only one tank...one time the connector where the dual tank switch would be came loose. Even though I have only one tank there was still the wiring for where the switch would go, there was just no switch. This caused the pump to not get power. Not sure you have this same thing on a van but it is worth looking into.