P2112 Throttle Actuator Control System - Stuck Closed

[EricGSXR]

My Yaris throttle feels a bit like on and off for a while.

After restarting (pushing the clutch at a traffic light) (Yaris NSP90 1NRFE with automatic start-stop system) the MIL light burns.

http://i58.tinypic.com/24v7ipi.jpg
This is my Techstream screenshot.


I've cleaned the valve (was a bit clogged), cleared the error code and aligned the throttle body with Techdoc documents.


The light is still off after a few months, but the throttle feels still a bit on-off.

The car is only 20.000 miles old, and the valve is (after cleaning) brand new.

http://i60.tinypic.com/fooo4z.png
http://i57.tinypic.com/ff6aea.png
http://i62.tinypic.com/ettvd1.png

What's next? Replacing the TB? Reprogramming my ECU?

[CTScott]

If you have a legal subscription to TechStream, you can load the updated ECM firmware. I would start with that, or if you car is still under warranty, bring it in to the dealer to see if they will do the TSB and change the TB and upgrade the firmware.

[EricGSXR]

The car is almost 5 years old now.

I've downloaded all the ECU files, but I've never updated my ECU before.
http://i60.tinypic.com/28sxc0w.jpg

[CTScott]

OK. Try the update then. The process is pretty simple with Techstream.