Connecting a 7.4 V battery directly to the pump will make it start? If it will, then the pump need a switch to stop running once a battery is connected directly.

Or, what do you mean with connecting a battery directly?

I have connected a 7.4 V battery to the multiplex green connector and the pump do not start.

I think it will not start until it receive some kind of signal from the receiver. (I have choosed the Rx option).

Do I need to do any jumper for testing the pump once a battery is connected directly?

BRG