A/C compressor has no power - HVAC wiring diagrams please?

Hello.

Your vehicle is still under warranty and you could void your warranty if you do repairs to the vehicle yourself. I recommend returning the car to the dealership if you have any problems with the vehicle. A lot of the electrical system works on CAN Data which is computer controlled systems which are not 12 volt systems of the past.

I have added the diagram you requested below.

Hope this helps with your repair. Please keep us updated on your repair outcome and do not hesitate to contact us again for further information or assistance.

Thanks for using 2CarPros.

Dave. ~H~

I am having the same exact same problem. I can only manually engage the clutch on the compressor with my obd scanner and will blow cold air, but it will not turn on using the normal function. So that tells me that my compressor still works, and that the IPDM can still send the signal to the compressor, but I am not receiving the signal to the IPDM from the A/C switch. I have been fighting with this problem with the 2020 Nissan Altima S for months now. Someone please help!

Hello,

This is likely a wiring issue as you are not getting a signal to the clutch.
I have attached the wiring diagrams for both the automatic and manual A/C below.

As mentioned by the other expert, given this is a 2020 vehicle, you might still be under factory warranty, depending on the mileage. In that case they will be able to get this taken care of.

Let me know of any questions.
Thank you.

Could you please provide a wire diagram of the IPDM connectors and pins?

Take a look at the first attachment which has the IPDM for this system and let us know if you need more info.

I also included the entire system diagram just in case you need it in this view.

Thanks