Hi, I have a 2017 malibu and the a/c don't work.
I notice the clutch of the compresor don't engage, all the fuse are good, the relay is good.

I jump the relay with a wire and you can hear the clutch engage and it blows cold air. On the relay, the pin 86 have 12v, pin 85 got nothing even with car on and a/c on, as I understand it should be a ground. pin 30 it's a ground, pin 87 got nothing it's normal this goes to the clutch of the pump. When I jump pin 30 with 87, the ac work. So my question is, what give the ground to the pin 85 to the relay to close? Thanks and please don't tell me it's the BCM 😅