Volvo S60 XC70 XC90 Cabin Temp sensor Testing and Cleaning 2001-2009
As in the title, I show where this small sensor is located, the small fan behind, how to clean it and how to test it with a multimeter. When this small sensor goes bad, it can cause problems with cabin heating/cooling, and also with some Climate Module buttons such as the heated seats, rear window defrost, etc However, before replacing it, test with a multimeter to make sure it's indeed the actual problem. Otherwise, the CCM software may have been corrupted (usually after a battery drain or when the car battery is replaced without having the key in POS II). See comments section for more information