Legend of block diagram of automatic air conditioning (AAC)

PE83.40-P-2001-60CA

Legend of block diagram of automatic air conditioning (AAC)

MODEL 215
with CODE (581a) Automatic air conditioning
except CODE (491) USA version
except CODE (498) Japan version
Sheet 1

Code

Designation

Coordinate

A6

STH heater unit

29G
33E

A6/1

STH radio remote control receiver

30E

A9

Refrigerant compressor

10G
13G

A31

Heating system delivery unit

3G
5G

A31m1

Circulating pump

5G

A31y1

Left duovalve

3G

A31y2

Right duovalve

3G

A32

Heating systems recirculation unit

3G

A32m1

Blower motor

3H

A32n1

Blower regulator

3H

A37

Pneumatic control unit (combined)

58E

A45

Fanfare horns and airbag clock spring contact

53G

B10/2

Left heat exchanger temperature sensor

2G

B10/3

Right heat exchanger temperature sensor

2G

B10/6

Evaporator temperature sensor

2H

B12

Refrigerant pressure sensor

15G

B12/1

Refrigerant temperature sensor

15G

B14

Outside temperature display temperature sensor

15G

B31/1

AAC [KLA] multifunction sensor

2H

B32/2

AAC [KLA] sun sensor (4 in total)

2H

B38/2

Rain/light sensor

37G

B61

SR obstruction sensor unit

37H
37H

B61b1

Front SR obstruction sensor

37H

B61b2

Rear SR obstruction sensor

37H

K40/5

Rear fuse and relay module

26E

K40/5f53

Fuse 53

25G

K40/5kU

Heated rear window relay

25G

K40/6

Left front fuse and relay module

20E

K40/7

Right front fuse and relay module

10E
13E
16G

M10/3

Left front power window motor

47G
48G

M10/4

Right front power window motor

50G
51G

M12

Tilting/sliding roof drive assembly

39G
39G

M12b1

Hall sensor 1, SR

39G

M12b2

Hall sensor 2, SR

39G

M12m1

SR motor

39G

M18/9

Left front seat cushion ventilation motor group

45G

M18/10

Left front seat backrest ventilation motor group

45G

M18/11

Right front seat cushion ventilation motor group

42G

M18/12

Right front seat backrest ventilation motor group

42G

M21/1

Left electrically adjustable and heated outside mirror

48G
51G

M21/1r1

Mirror heater

48G
51G

N10/6

Left front SAM control unit

9G
12G
17E

N10/7

Right front SAM control unit

7E

N10/8

Rear SAM control unit

23E

N18/4

Center vent electronics control unit

2H

N22

AAC [KLA] control and operating unit

4E

N22/5

Stepping motor electronics control unit

2H

N29/5

Left front seat ventilation blower regulator

41G

N29/6

Right front seat ventilation blower regulator

45G

N32/1

Left front seat adjustment control unit with memory

42E

N32/2

Right front seat adjustment control unit with memory

45E

N69/1

Left door control unit

49E

N69/2

Right door control unit

52E

N70

Overhead control panel control unit

39E

N70s1

Tilting/sliding roof switch

39G

N72

Lower control panel control unit

35G

N72

STH switch

35G

N72/1

Upper control panel control unit

36E

N73

EIS control unit

62E

N80

Steering column module

55E

R1

Heated rear window

25G

S17/3

Left door contact switch

21G

S17/4

Right door contact switch

21H

S46

STH switch

32G

S68/9

Left front seat belt buckle microswitch

40G

S68/10

Right front seat belt buckle microswitch

44G

S110

Left multifunction steering wheel button group

53G

S110s1

Scroll forward/back button

53H

S110s3

System selection button

53H

U151

Valid for engine 113

8D
8D

U321

Valid for engine 137

11D

U425

Valid for CL 55 AMG

10D

U779

Valid for engine 275

11D

U818

Valid for CL 65 AMG

12D