I should also mention that switches can internally fail and refuse to close. This means that you can't PROVE the switches are good without a voltmeter.

Below is the diagram of the circuit. If you take the trim out of the trunk, you can get to the connector on the module. On Pin 7 of C1 you will see under .2 volts if both switches are closed. If either is open, then you will see something over 4.5 volts. If this voltage is not below about .2 volts, the controller will refuse to start the pump.