Here’s a write-up on how to troubleshoot and repair the HVAC “Fan Amplifier” module, as used in G50 (1990-1996) and FY33 (1997-2001) versions of the Infiniti Q45, the A32 (1995-1999) version of the Nissan Maxima, and probably other models as well. This thread is the result of repairing dead fan amplifiers from IrvingQ45 and goody94q45, which they […]