jump the low pressure switch...if that worx its the switch...if not its gotta be the relay or an open in the circuit...assuming its got freon and oil.

 

Jumping the relay tells me your problem is in the control side of the relay. Most likely its the ground signal missing. That signal comes via the pcm. It doesnt mean your pcm is bad. The ground signal to the pcm from the AC contol panel could be missing. The dealer can hook a scan tool to the car and inspect to see if the PCM is seeing the ground sigal or not. If the PCM is seeing the AC switch ON but is not sending a ground signal to the relay, its the PCM.If the data list shows the AC switch OFF its going to be before the PCM. Sadly alot of Tech at dealers would over look this step.

 

It depends what dealer you go to... for a stock car I'd prefer to take it to the dealer and have them fix it, at least you have some sort of warranty and your having someone certified in a/c repair on Honda/Acura's checking it out correctly. And a factory scan tool is so much more better than a generic one.

 

I know I work for a Honda Dealer