Toyota Camry Power Lock problems.

The power locks in my Camry will only unlock the driver’s side door. They lock every door in the car, but only unlock the driver’s. I checked the fuses underneath the front dash, (edit: all the fuses I checked are fine) and after reading information online, bought and replaced the rear, passenger’s side lock actuator. (It was expensive, so I wanted to tackle one door first to make sure I could do it.) Unfortunately, the exact same problem persists, even with the new actuator. Power locks lock it, but not unlock it. All the door handles and manual locks work fine. Suggestions? 2004 Toyota Camry 4 cylinder.