Brake code C1344 and warning lights!

I keep getting the C1344 and all the lights. I checked and changed the rear shoes and the light keeps coming back, although not immediately. It takes just a little while.
I didn't notice any signs of leaking fluid, though I was able to squeeze the LH wheel cylinder in pretty easily by squeezing on the top of the shoes. The drums were not scored and were in spec so I didn't turn them. I never cracked any brake lines loose.
Any ideas of what I can do to figure out what's going on?

 

Sorry about the confusion. I've updated my profile to reflect my recent upgrade from the 01. I'm checking with techstream. I plan to try bleeding the brakes tomorrow. My helper could have loosened something up when he changed my pads. Just curious if I can do the bleeding procedure with techstream if it comes to that. I'm just going to bleed at each wheel tomorrow to see if that helps. I was a little surprised at how easy the LH wheel cylinder pressed in when I tried to squeeze the top of the shoes. It's got me wondering if it could be bypassing on the inside.

 

I thought I posted in the 2nd gen forum. Sorry

 

Sadly, I have put it on the back burner for some time now. I did try to bleed all 4 brakes by cracking the bleed screws. All fluid, no air seen. For some reason, I could not execute the brake bleed command from Techstream. I tried 2 or 3 times and gave up. Too many important things to do. I plan on changing the rear left wheel cyl. just for kicks and giggles and see what happens. I don't know why I couldn't execute the brake bleed from Techstream though. That did kind of aggravate me.

 

Here's a little update for this pest that I've ignored for over a year. I recently took my car in to the dealership to see if they could figure out what was going on. They decided to replace my actuator pump since it was covered under some extended warranty from Toyota. Lights stayed off for a whole 20 miles! I was all excited to have a new pump and no brake lights on but it didn't last very long. So I took it to another dealership and had them bleed the entire brake system. The lights came on when I started the car to leave the dealership. So I just took it back and had them check it again.

They found no leaks anywhere and nothing that needed to be replaced. They did find the left rear brake out of adjustment. There was surface rust on the inside of the drum and no brake dust at all. Imagine that! Not sure how that happened but somehow it didn't self-adjust. I was skeptical that adjusting the clearance would keep the lights off but knock on wood, so far so good. I've been about 100 miles in the last couple of days. No sign of trouble yet!