I recently bought a 2007 Ford Fusion for pretty cheap because the A/C doesn't work. I figured I would be able to fix it pretty easily but I was wrong. I have bypassed the A/C clutch relay and then everything works just fine so the problem must be before the relay. I'm starting to think it might be the PCM because I get a "check charging system" warning before I start the car that disappears after I start the car, and also the anti-theft light continuously flashes. With both warning lights it seems the normal symptom is the car not starting or only running for a short time and then shutting off (from what I've researched online). I'm wondering what else besides the sensors could be the problem with the A/C? Also, if the car starts and runs fine, is there any reason to be worried about the warning lights I'm seeing?
Thanks in advance for any suggestions!
Added (1). Oh and one more thing. I found a used PCM on ebay for roughly $50 and was thinking about just trying to replace the PCM. Then I did some research and found that I might have to reprogram the new PCM to work with my car? Anyone know if I actually need to do this?
Added (2). I have also switched the relays and the relay works just fine in the spot for the windshield wiper relay.