Post by
Debonair »
https://forums.nicoclub.com/debonair-u241370.html
Thu Mar 31, 2016 7:37 am
Sounds like an issue with one or more of the blend doors, or "Mode Door" as Infiniti calls them. They blend warm and cold air, and direct flow from defrost, dash, and floor vents. They may be unplugged, or one of the motors may have failed. Basically, it probably will need to be troubleshot using factory information.