Air Intake Control

WARNING: This page is about a different car, the 2018 Jaguar XF, 2017 Jaguar XF, and 2016 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

The recirculation door is operated by an electric motor. The Automatic Temperature Control Module (ATCM) provides analogue signals to the motor along a hardwired connection. A potentiometer in the motor supplies the ATCM with a position feedback signal for closed loop control.

The source of intake air is automatically controlled unless overridden by pressing the recirculation switch on the Integrated Control Panel (ICP). Under automatic control, the ATCM determines the required position of the recirculation door from its comfort algorithm and, if fitted, the pollution sensor.

A brief press of the recirculation switch illuminates the switch indicator and activates timed recirculation. Pressing and holding the switch causes the switch indicator to flash and then illuminate constantly, indicating that the air inlet is in latched recirculation and the switch can be released. A second press of the switch cancels recirculation and the ATCM returns the recirculation door to the fresh air position. Timed recirculation is automatically cancelled after a set time, which varies with ambient air temperature.

During automatic control, if the ATCM detects pollution it sets the air source to recirculation for 10 minutes, then to fresh air for 20 seconds to renew the air in the vehicle. The ATCM repeats this cycle until the pollution is no longer present.

The sensitivity of the pollution sensor can be adjusted, or pollution sensing can be selected off, on the Front climate, Settings screen of the Touch Screen (TS). If there is a fault with the pollution sensor, the ATCM disables automatic operation of the recirculation door.