[2way]

Not positive... but, I think the '03+ are possibly CAN. I don't know about the euro versions, though. They may have been CAN. I know my USDM '02 is ISO.

Either ISO 9141 or CAN for late model Toyotas.

 

[2way]

You can use alternative method to flash the CEL using the check engine light and then manually decode it.

Another link: http://plaza.umin.ac.jp/~satoshi/tip06en.html

Have you tried the Toyota Euro .docs website?