Working on a 2008 Altima with 3.5, buddy said it needed a compressor, threw a compressor on it, still no ac. Check for power, no power. Check for power out of IPDM, nothing. Switch out IPDM, still nothing. Scan it and find that ac compressor request is not being registered, replaced climate control module. Diag tree has sent me to the BCM. How common are the BCMs??
I’m having same issues with 2009 coup. Can’t find anything about getting power to compressor. Did you fix yours?