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What liter engine, trim level, and do you have auto or manual HVAC?
I still need to know if you have auto or manual HVAC?
Thanks. Use the link below. Since bypassing the low/high pressure switch does not turn on the compressor, that still leaves the thermal switch, multiplex, ECM, and clutch relay. Have you checked those. Is the ECM getting a AC request?
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The multiplex is tested with a scan tool.
At my dealer we use the Honda supplied HDS.
The thermal switch wires are the outside pins 3 and 1, it should be a closed circuit.
There should be one connector at the compressor with 3 wires. one is power to the compressor coil and the other 2 are for the switch.
I am going to turn you over to another tech, I am not going to be able to keep up with the flow of the post with these delays. Best of luck