TC reported air-con fault, unable to reset. TC feedback after changing end at MSP S that car 2647 #2set air-con faulty. Reset - ok. Car is cooling. ~~~~~ 2647 TC reported air-con fault, unable to reset. TC feedback after changing end at MSP, that 2647 A/C 2faulty. Reset - ok. Car is cooling.  2647 both A/c 2 units having coolant pressure fault.    #2647 A/c 2-1 found leak on CCU connector. Retightened. Reclaimed freon, vacuum & recharged freon to criteria. #2647 A/c 2-2 found pressure fluctuation at High & Low side. Reclaimed freon, vacuum & recharged freon to criteria. Function check both #2647 A/c units able to cut in/out. HP/LP within criteria. Monitor for 1 hr & found no fault occurred.  Kana/Farid 44157