The idle air control valve is integrated into the throttle body unit as shown here:
It may not look exactly like that, there was an update some time around then but the parts are very similar and the principles are the same.
There is a forum thread with a few more pictures of the cleaning process here:
Please note: Moving the throttle butterfly manually may mean you need to undertake a 'throttle body reset' as the throttle is computer controlled and has no physical link to the pedal. The process is discussed and explained here in post 14.
This is the process described:
Minimum throttle stop must be reprogrammed as follows:
a) switch the ignition on for approx. 3 secs
b)switch off he ignition and wait aprox, 5 secs
c) restart the engine and allow the coolant temperature to reach 60°C (approx. 3 mins from ambient temp of 20°C
d) road test the car and allow the ECU to learn the throttle valve adaptives