Air Conditioning Control System (page 5 of 5)

When air conditioning is selected, the cooling fans initially operate at minimum speed. If the pressure increases to 16 bar (232 lbf/in²), the speed of the fans progressively increase up to a maximum speed at 27 bar (392 lbf/in²). When the fans are at maximum speed, if the refrigerant pressure decreases, the speed of the fans progressively decrease down to a minimum speed at 15 bar (218 lbf/in²). Operation of the cooling fans is also affected by coolant temperature. ENGINE MANAGEMENT SYSTEM - MEMS, DESCRIPTION AND OPERATION, Description. ENGINE MANAGEMENT SYSTEM - EDC, DESCRIPTION AND OPERATION, Description. ENGINE MANAGEMENT SYSTEM - SIEMENS (ALL EXCEPT NAS), DESCRIPTION AND OPERATION, Description. ENGINE MANAGEMENT SYSTEM – SIEMENS (NAS), DESCRIPTION AND OPERATION, Description.