mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

GF54.30-P-3170SX Operation of Climate Control, Function|Page 16522 > < GF54.30-P-3170SX Operation of Climate Control, Function|Page 16520
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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

GF54.30-P-3170SX Operation of Climate Control, Function|Page 16522 > < GF54.30-P-3170SX Operation of Climate Control, Function|Page 16520