I have an 02 F150 super crew lariat fx4. My problem is the only way to unlock the doors it with the key. The keyless remote, keypad on door and switches in the truck do not lock or unlock. However. When I press the button for the locks the lights flash but no lock. I also hear a clicking sound whenever I use any of the switches or remote to lock or unlock. The sound is coming from the anti theft box under the dash drivers side on the firewall left of the break petal. I Believe the anti theft box is the problem. All fuses and relays were checked and good. No codes when scanned. Been searching online and haven't found anything that has all the same issues. Please help.