scenic 2lt 16v F4R throttle prob

Ive an issue with my Scenic 2001-03 2lt 16v F4R in that the Throttle has a mind of its own. Racing, reving, loss of idle it does it all! Ive changed the throttle Body with no success and checked over quite a lot of things already.
Im interested in the part the throttle cable goes that sends an electronic signal to the ECU. Can anybody tell me whats this part called, i cant find it listed with car part traders?
Also does anyone have the wiring diagram for this cars electrics...

scenic 2lt 16v F4R throttle prob

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