I have a 99 honda civic and the power locks just stopped working.
Fuse is good and switch tests OK with continuity check.
I used to be able to lock all doors from key when outside but now nothing.
I have to manually lock the doors.

Anybody had this problem or know what to look for to fix this problem?

The problem is the power door lock module. It is locate inside the driver side door panel. You can get one of ebay or use two relay to bypass the system.