I found this connector in my Jaguar X-Type 2,1 2006, when I was changing the coolant tank. It was hidden under a vacuum pump. Wire color - green with blue stripe and blue.
Everything works in the car, there are no error messages.What is it?

 

That is the “in transit” connector, used when the car was first delivered. It is now redundant and should be fitted to a clip behind the battery.

 

Many thanks!