2002 Infiniti Qx4 Power Locks Dont Work?

Hi there recently out of no where my 2002 Infiniti Qx4's power locks began to not function. At first i thought there was a bad cable but no because the windows work fine. I then noticed that none of the doors locked at all. All i hear is a little click under the steering wheel (behind the fuse box) when the lock/unlock on is pressed. I have an aftermarket alarm but that is not part of the problem because the alarm works completely fine. All i have to do is lock the doors manually. I think it may be the Smart Entry Control Module but i may be wrong. Any sugestion will help. Thanks in Advance