OBDII Port not working?

There should be both power and grounds in the DLC. In yours the easy way to test would be with a simple 12volt test light. Connect the clip to a good ground and turn on the key. Touch the tip of the light to pin 16, it should light up. Now take the light and put a pin or piece of wire in the clip, hold the tip to pin 16 and then use the pin or wire to touch pins 4 and 5 It should light on both pins to show that there is a ground on both. If those all work, then I would connect a scan tool and verify that it can connect. If that all works then the device might be faulty or just not compatible with your vehicle.