Perhaps others can chime in for specific 2014 procedures
But there is a Y-type cable adjuster under the drivers seat on my '06. After verifying that the rear brake linkages are lubricated, engage the parking brake three clicks, then tighten the threaded cable adjuster until you feel the beginning of drag when rotating the wheel (off the ground). THEN release the parking brake and verify free rotation of BOTH rear wheels.
Of course, both wheels also need the same amount of parking brake clicks to start dragging... if not within a click or two, post back.
You tighten the hand break inside the rear brake rotor. I just changed my rear rotors and pads and did this recently. When you remove your rear wheel, there is a small rubber plug on the surface of the rotor. Remove the plug and you will see teeth on a gear. Take a screw driver and rotate it some. Adjusting this gear moves the emergency brake closer/away from the brake rotor. This is the correct way to do it.