Why does my Automatic Systems security interlock door keep both doors shut?

Interlock logic refuses to open one door while it believes its partner is ajar or the cabin holds someone. A door switch out of alignment, a sticky sensor, or a leaf that never seats fully can leave the system stuck. Damaged cabling linking the two doors does the same. We read every door position signal, test sensors and controller, then walk through a full entry and exit cycle plus the emergency release.