Compressor not engaging, no codes, freon levels fine, jumping relay doesn't work, I'm stumped.

[M4532098]

Hi all! We've had our 2013 Sonic LTZ 1.4T for about two years now, it's got 117k. Last night, all of a sudden, the AC started blowing hot. The compressor is not engaging no matter what. I've checked the freon, it's full. I've jumped pins 30 and 87 on the clutch relay, still doesn't engage. I've checked all the fuses, they're fine. Putting the fan speed on 4 and switching to defrost, which normally would kick the compressor on. also does nothing. Ambient temp shows fine, it's over 90 degrees here and it reads spot on. I have no stored codes, I've tried disconnecting the battery for 15+ minutes, doesn't make a difference. I really don't think it's the compressor, as it showed zero signs of a problem until last night when it literally just stopped working out of nowhere. I've checked just about every solution I can find on this forum, and nothing changes.

 

[H0llyW00d]

Solved;

Especially for those with intermittent ac compressor engagement. Check closely again on the black mini relay for the ac clutch. If you happen to notice how loose it is when you pull it out compared to the one next to it, it means the connection below has shifted and is not connecting properly. QUICK fix would be to bend 2 out of the 4 prongs a bit to make it connect. This drove me crazy. But make sure all other issues are fixed (fan, freon, ambient temp sensor, evap temp sensor, etc. . . Kinda makes sense when it works when you turn the car on and off. Energized.