S 550 (221.171) V8-5.5L (273.961) (2007)
Control Assembly: Description and Operation
GF83.50-P-2010SX Rear Air Conditioning System Control, Function
GF83.50-P-2010SX Rear Air Conditioning System Control, Function'
- with CODE (582) Rear air conditioner
Component Identification
Function
The rear air conditioning is controlled via the AAC [KLA] control unit. This is networked with the vehicle electronics via the interior CAN and via the
AC-LIN.This in turn makes it possible to incorporate additional climate-relevant influences, in order to improve the regulation quality and to lower
power consumption.
The AAC [KLA] control unit reads in the following signals for control:
direct
^
Temperature at the evaporator through the rear air conditioning evaporator temperature sensor
^
Temperature at the air outlets through:
-
Left rear air conditioning heat exchanger temperature sensor
-
Right rear air conditioning heat exchanger temperature sensor
via interior CAN
^
Circuit status from the EIS [EZS] control unit
^
Operation of the rear air conditioning via the front central operating unit
^
Operation of the rear air conditioning via the upper control panel control unit when operated by the driver/front passenger