Auto Air Conditioning & Heater Repair: auto ac, kia sedona, snow flake

Question
QUESTION: 2002 kia sedona ex -- have installed new compressor--full of freon -- light on control panel comes on-- but no fire to low pressure switch and compressor will not come on

ANSWER: HI Mike

Need to know why you replaced compressor.  If you replaced it because it was locked up or your clutch was locked up you may have blown your fuse.  Check in fuse box for comp. fuse or it may have a snow flake.  Check and let me know.

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QUESTION: all fuses and relays are good dealer replaced compressor
thinking it was bad was not locked up

Answer
Hi Mike

System has two fuses make sure both are good.  Does cycling switch have ground to it if it does check relay for 2 grounds and two positives when you have relay out and car running with ac on.  If you are missing ground your ecm is what sends it thru your cycling switch. All diagrams show power directly to relay which tells me that you are probably missing a ground or you do not have power at relay.