Cooling Fan Control
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 Jaguar XKR, 2009 Jaguar XK8, 2008 Jaguar XKR, 2008 Jaguar XK8, and 2007 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.
The automatic temperature control (ATC) module determines the amount of condenser cooling required from the refrigerant pressure sensor, since there is a direct relationship between the temperature and pressure of the refrigerant. The cooling requirement is broadcast to the engine control module (ECM) on the medium speed controller area network (CAN) bus. The engine control module (ECM) then controls the temperature of the condenser using the cooling fan. Refer to Electronic Engine Controls article.