1542 1-1,3542 1-1 coolant presure fault. ~~~~~ 1542 1-1,3542 1-1 coolant presure fault.  3542 A/c 1-1 charged in 1 kg of 407C. Tightened suction connector & function check - OK. 1542 A/c 1-1 charged in 1.5 kg of 407C. Tightened charging v/v & function check - OK. Both cars saloon temp. at 24'C.  Chan SW/Hanafi 44096