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Home >> Mercedes Benz >> 2009 >> E350 Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control -- Basic Knowledge -- E350 (211.256) >> Basic Knowledge >> Regulation of comfort automatic air conditioning, function - GF83.40-P-2006TT

Regulation of comfort automatic air conditioning, function - GF83.40-P-2006TT

MODEL 211.0/2/6 with CODE (581) Comfort automatic air conditioning 

Fig 1: Regulation Of Comfort Automatic Air Conditioning Function Diagram
G07286068Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function 

The comfort automatic air conditioning is regulated via the comfort AAC [KLA] control and operating unit (N22/7). This is connected to the vehicle electronics via CAN-B and via LIN. This in turn makes it possible to incorporate additional relevant parameters in order to improve regulation quality and to lower power consumption.

The comfort automatic air conditioning is regulated by providing the comfort AAC [KLA] control and operating unit (N22/7) with the following information: 

direct 

Via CAN-B 

as from 1.6.05 refrigerant pressure from refrigerant pressure sensor (B12) via the driver-side SAM control unit with fuse and relay module (N10/1)

Via LIN 

The comfort automatic air conditioning is regulated by actuating the following components: 

Via CAN-B 

by the driver-side SAM control unit with fuse and relay module (N10/1)

Via CAN-C 

from the CDI control unit (N3/9) (with diesel engine) or

from the ME-SFI [ME] control unit (N3/10) (with gasoline engine)

Via LIN 

Blower motor, location/task/function   GF83.10-P-2140T 
Blower regulator, location/task/function   GF83.10-P-2141T 
Multifunction sensor location/task/function   GF83.10-P-2148TT
Heater water circulation pump, location/task/function   GF83.20-P-2109T 
Shutoff motor heat exchanger, location/task/function   GF83.20-P-2112T 
Engine and AC electric suction fan with integrated control location/task/function   GF83.40-P-2172T
Refrigerant pressure sensor, location/task/function In vehicles as of 1.6.05 GF83.40-P-2156T 
Refrigerant pressure and temperature sensor location/task/function On vehicles up to 31.5.05 GF83.40-P-2171T 
Actuator motors for comfort automatic air conditioning, location/task/function   GF83.40-P-2183TT 
Refrigerant compressor, location/task/design/function   GF83.55-P-2100T 
In-car temperature sensor with ventilation fan, location/purpose/function   GF83.57-P-2107T 
Evaporator core temperature sensor, location/task/function   GF83.57-P-2109T
Outside temperature sensor, location/task/function   GF83.57-P-2110T 
Sun sensor location/task/function   GF83.57-P-2111TT
PTC heater booster, location/task/design/function With engine 271, 628, 629, 642, 646, 647, 648 GF83.70-P-4058T
Comfort automatic air conditioning control and operating unit, location/task   GF83.40-P-2181TT 
Operating unit for rear air conditioning, location/task   GF83.50-P-2120TT
Driver-side SAM control unit with fuse and relay module, location/task/design   GF54.21-P-4109T
Front passenger-side SAM control unit with fuse and relay module, location/task/design   GF54.21-P-4111T
Rear SAM control unit with fuse and relay module, location/task Models 211.0/6 GF54.21-P-4130T
Model 211.2 GF54.21-P-4130TA
Driver front door control unit, location/task   GF72.29-P-4115T
Passenger-side front door control unit, location/task   GF72.29-P-4116T
Door control unit rear, location/task/function   GF72.29-P-4117T
Electronic ignition switch control unit, location/task   GF80.57-P-4120T
Overhead control panel control unit, location/task/design   GF82.20-P-4110T
Central gateway control unit, location/task   GF00.19-P-4100T