Ok my a/c hasnt been used in awhile. Tried to use it today and 1-5 just blows hot air. Hooked up a gauge on low port and it says freon is full. Noticed my a/c comp clutch isnt engaging at all any. So What should i try checking. Tried fuses and relays no difference. Tried jumping pins on clutch and accumulator plugs still no difference. any help?