My A/c is not working and troubleshooting the system I believe the High pressure switch is bad. From the diagram the high pressure switch feeds the signal into the ECM and this is what is missing. I am thinking that I can bypass for a few seconds to make sure the compressor kicks in and verify the switch is bad. Since there is not a switch at any dealers or auto parts I would have to order and just want to make sure before I spend the money. If you could offer and help Thanks....