Can I lock and unlock the doors of a RAV4 via the CAN bus?
This is something I need to be able to do for multiple cars, but for development I'm using my own Toyota 2010 RAV4. I have built a CAN interface that I've plugged into the OBD-II port. Normally, when the car is turned off, the bus is quiet. Unlocking the door causes a brief flurry of messages, which I can record. I don't know if any of those message specifically relate to unlocking the door, or whether they're just flashing the lights, beeping etc. When I replay them, nothing happens. So here are my questions:
1) Is it likely that the doors could be controlled from the OBD-II port, which I believe only exposes the CAN C (high-speed bus for engine diagnostics)?
2) Is there anywhere convenient I could access the other CAN buses from? Are the doors even controlled by CAN messages?
3) Is it possible that I'm seeing the right messages, but they're being forwarded from another bus via a one-way gateway?
4) Where would I find a full wiring diagram online?
There are lots of tantalising hints from Google searches, but nothing is quite useful enough. Really, anything anyone can offer that will help me in the right direction would be really useful.
(As for whether my replays work, recording turning on the headlights and playing that back does cause the headlight indicator on the instrument cluster to come on, so that's something.)