ac does not work compressor clutch will not engauge replaced switch assy in dash have 12 volts going to low preasure switch going to back of compressor then coming out going to pcm the ac high preasure switch cut out and ac compressor cycling switch low side works on ground put jumpers in then grounded straight to battery the pcm does notsend ground out to relay to engauge clutch i can manual engauge clutch at relay system works checked wire from relay to pcm ok i hooked solus pro to truck i can manual pull clutch in with truck off switch on but with truck running i cant does the pcm needs flashing
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In your description you may have the high and low pressure cut-out switches mixed up. The AC request signal from the AC control to the PCM passes through the high pressure cut-out switch. Does the solus show the "AC request" as "Yes" when the AC switch is on? That would indicate a complete circuit for the "AC request". If the AC request signal is present the you should double check the pcm input from the low pressure cut-out and cycling switches.
