Low pressure ac switch?
There is no low pressure switch on this setup, the pcm takes care of the high and low pressure cutoff.
Is your relay being kicked on?, using tuning software or a tech2, force the compressor on and see what happens.
Ryan
if so, command the AC clutch on, to make sure the electrical side from the pcm to the compressor wiring is good and this will check the relay.
I've had the connector on the compressor be loose and only work sometimes, replacing the terminals fixed the issue. This was on a 100K mile 98.
i doubt the pcm itself is bad.
Ryan



