climate control not working

[salty]

Have A 1997 A6 1.9tdi Air Con Has Been Checked For Leaks But When Switched On Does Not Work Have Checked Under The Lid And The Compresser Does Not Cut In When Switched On Is There A Fuse Or Relay In The Circuit

[Col]

Yes there are fuse(s)

Not sure on your car but do check them.

If they check out ok, I'd suspect the pressure switch.

Best thing is to take it to an aircon specialist, it's a lot cheaper than you may think.