[cianroach]

I bought a late 2010 (60 plate for uk) i30 back in January and changed the oil filter yesterday. There was a connector which had been left disconnected presumably from the previous owner, I have noticed when stopping the engine there is much less "shakedown". Does anyone know what the connector does? There's a google drive link somewhere with the apparent answer but following the link gives a 404 error.

[I30 GD]

Picture would help, 👍