So what do you have connected to J3?

In one position (NC), the Relay contact at RLY2 just shorts out the two pins at J3 and not much else.

In the other position (NO) that Relay contact cross connects RB3 (which is pulled up via internal weak pull-ups) via whatever you have plugged into J3 to RA4.

At the moment I'm still puzzled what you are trying to achieve.