I did some searching and I have not seen this, so I thought I'd contribute to the community which I know will aide me in the future.
EDIT: My procedures are more work than required. Go to the link in post #4 by MGDfan
Are your power door locks "weak", or stop working when it's warm? This may be for you. The problem is a mystery piece inside the tiny electric motor that moves the door lock. I had this EXACT problem on my Lexus GS300 and its easily solved for free.
1. Remove the door panel and remove the entire latch and actuator assembly.
2. Drill out the two metal rivets and pry the the two plastic halves apart to reveal the motor and gears.
3. Pop out the motor.
4. Remove the back plastic part of the motor by prying the little metal tabs on the side out of the way.
It prolly looks like this:
5. Clean it up and remove the piece circled in red.
6. Put something else in its place. I used part of a beer can tab.
7. Reassemble and use screws to secure the two halves. It doesn't need to be pretty.
8. Plug it in to the harness and test so you don't waste time putting everything back together only to realize you used a Pepsi can instead of a beer can part. It's gotta be beer.