I have vaichall corsa 1.2 (2000), when you switch on the aircon nothing happens. No cold air and their is no effect on the revs of the engines. I have checked the fuses nad they are ok. I have been looking the habes manual and on their it states that the Relay could be faulty but I can't find the relay. Please advice on what the fault could be!
Just a thought, but maybe you need the A.C. system
re-gassed?
If the gas has been lost, as it can do naturally over time with an older vehicle (I had this with my previous car - Toyota Celica), you might need to get it checked. Hope you get it sorted.
as you pull out the witch for the aircon on the dash you should be able to hear the pump cut in also the revs should drop as more load is put on the engine
As monarobabe said,the aircon is probably out of gas. The car will not bother to start the compressor if the gas is too low. Gas always the first place to start whenever aircon is not working, a regas is �100 ish local to me.