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Home >> Mercedes Benz >> 2012 >> S550 Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - 221 Chassis - 3 Of 3 >> Wiring Diagrams >> Legend of wiring diagram for automatic air conditioning (AAC [KLA]) control unit >> Legend of wiring diagram for automatic air conditioning (AAC [KLA]) control unit - PE83.40-P-2101-60SAA

Legend of wiring diagram for automatic air conditioning (AAC [KLA]) control unit - PE83.40-P-2101-60SAA

Model 221.0/1 control unit N22/1, Sheet 1 

Code Designation Coordinates
A0 Color code key 40L
M16/33 Left B-pillar air distribution actuator motor 18L
M16/34 Right B-pillar air distribution actuator motor 24L
N10/1 Front SAM control unit with fuse and relay module 6L
N10/1 Front SAM control unit with fuse and relay module 12L
N10/1 Front SAM control unit with fuse and relay module 21L
N22/1 AAC [KLA] control unit 4A
N22/1 AAC [KLA] control unit 12A
N22/1 AAC [KLA] control unit 20A
N61 Heated windshield control unit 33L
N61 Heated windshield control unit 37L
U12 Valid for left-hand drive vehicles 2C
U12 Valid for left-hand drive vehicles 5F
U13 Valid for right-hand drive vehicles 2C
U13 Valid for right-hand drive vehicles 5F
U66 Valid for rear air conditioning 25E
U66 Valid for rear air conditioning 28E
U294 Valid for heated windshield 29E
U294 Valid for heated windshield 35E
U900 Further line routing not clarified at time of publication 16D
W15 Power ground (electronics) 3E
W15 Power ground (electronics) 5H
W34 Ground (left footwell) 3E
W34 Ground (left footwell) 5H
X30/34 Interior CAN/cockpit voltage distributor connector 15L
X53/1 Air conditioning connector 16E
X53/1 Air conditioning connector 26G
X53/1 Air conditioning connector 29J
Z7/60 5V output connector sleeve (solder connector in wiring harness) 6E
Z7/72 COC nozzles and sensors sensor ground connector sleeve 11E
Z50/37 Air conditioner compressor ground connector sleeve 4E
Z68/3 AC LIN bus data connector sleeve 13E
Z68/15 Heated windshield LIN bus ground connector sleeve 33G
Z68/16 Heated windshield LIN bus positive connector sleeve 29G
Z68/17 Heated windshield LIN bus data connector sleeve 34G
Z68/17 Heated windshield LIN bus data connector sleeve 37G
Z81/11 Front passenger circuit 58d connector sleeve 8E
Z110/2 AC bus solder terminal 20G
Z111 Voltage supply connector sleeve 12E
Z111 Voltage supply connector sleeve 21G