I really need to practice my english vocabulary...
Engage was the word I was looking for earlier.
The air con pump/compressor will not engage, but is engages when I connect the extra wire so that the air con pump relay (located in the engine compartment fusebox) connects to earth/minus.
The garage that did the refill of the air con system thinks there is a broken wire somewhere... Sounds expensive!
They connected their diagnostic tool, but there was no fault codes.
I have done some research, I downloaded the e-learn manual. Will do more research on that.
What I was wondering was if any of you have had any similar problems?
And if your problems was due to a broken wire, where was the broken wire located?