AC Compressor not engaging in defrost or AC mode

[OR VietVet]

When you do open it up I would not only replace the orifice but also the accumulator and flush the system out and install new o-rings and if it was mine and knew I was going to keep it, I would do the condenser too because crud in the system clogs it up too. It is called the "Black Death" because it all looks black when flushed out.

 

[3JFamily]

Dropped off at the shop and they are going to see if they can use the scanner on it.

An update on the ac function.
I was driving home and switched on the ac and the compressor engaged and the ac was working on its own without using the manual switch to engage the compessor. After a little while, 5-10 minutes, the air started blowing ambient air with a musty smell. So, the ac will work up to a point then stop.


If I buy a Tech ll scanner for my 2006, will it show AC activity? Will I be able to command compressor on/off, show line pressure, pressure sensor on/off?