AC compressor and Electric Radiator Fans worked fine. I installed a new alternator and now the compressor and fans won’t turn on by themselves. There’s no codes and the vehicle has 47,000 miles. I’ve tested relays, connections, all fuses, and supplied direct power (with a power probe) to each fan and compressor through the under hood fuse box and they come on fine. The AC button light comes on when pressed but the compressor and fan(s) do not. Does it sound like an interior electrical issue, or maybe a bad ground that comes from the compressor directly? Love the videos, Thanks for your help!
2010 Lexus RX350
Well if it worked before you did that work something is askew check the wire and make sure nothing was pinched or ripped because it's a bizarre coincidence if you put an alternator in a car and all of a sudden the fans don't work. But if you didn't disconnect the battery when you did that work you could have shortened things out when you took the wiring off the alternator or when you put it back on always disconnect the battery terminals when doing that work
