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Message: <blockquote data-quote="extreme_21" data-source="post: 1006894" data-attributes="member: 9565">Normally the PCM will ground the circuit when requesting to perform an action(which your probably know)..so if you check on pin 22 and get a grounded circuit, PCM is requesting to shut down the system like your diagnoses show..The PCM will shut off the system from WOT and high temps, like you already know..but it will also shut down the system if 1 of it's parts is know faulty to the PCM that is involved in the A/C circuit/system of operation..you have code 564 for the cooling fan, if the PCM see's a fault with the cooling fan it will shut down the system for it thinks the condensor will not be cooled..thus overheat the system. I understand how your fan is working but the signal to the PCM must be faulty.The fan and the A/C clutch are both controled by the CCRM, they both also route through the EDF Control Relay in the CCRM to have comms with the PCM..I'd diagnose fault 594 for your fan being that the PCM is telling you what it's problem is, and why it's shutting down your A/C..get rid of the fault, then you can diagnose the A/C further if it's still not working</blockquote>