Wiring diagram for automatic air conditioning (AAC) control unit - PE83.40-P-2101-97FAB
WARNING: This page is about a different car, the 2012 Mercedes-Benz C300, 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.
| Code: | Designation: | Position: |
| A0 | Color code key | 80A |
| A9 | Refrigerant compressor | 31L |
| A9 | Refrigerant compressor | 36L |
| A9/7 | Refrigerant compressor with magnetic clutch | 38L |
| B10/38 | Rear footwell air outlet temperature sensor | 79L |
| B10/4 | Interior temperature sensor | 45L |
| B12 | Refrigerant pressure sensor | 40L |
| B31 | Emissions sensor | 41L |
| B82 | Interior humidity/temperature sensor | 27L |
| CAN B | Interior CAN | 48K |
| E10/1 | Left center air outlet symbol illumination | 50L |
| E10/1x1 | Center vent symbol illumination electrical connector | 50J |
| E10/2 | Left front side air outlet symbol illumination | 52L |
| E10/3 | Right front side air outlet symbol illumination | 54L |
| E10/4 | Right center air outlet symbol illumination | 51L |
| E10/5 | Rear air outlet symbol illumination | 77L |
| E10/5x1 | Rear vent symbol illumination electrical connector | 77J |
| F34 | Interior fuse box | 57L |
| F34f119 | Fuse 119 | 55K |
| M2/1 | Rear blower motor | 68L |
| M2/1x1 | Rear blower motor electrical connector | 67J |
| N10/1 | Front SAM control unit with fuse and relay module | 3L |
| N10/1 | Front SAM control unit with fuse and relay module | 11L |
| N10/1 | Front SAM control unit with fuse and relay module | 19L |
| N10/1f12 | Fuse 12 | 1K |
| N10/2 | Rear SAM control unit with fuse and relay module | 63L |
| N10/2f43 | Fuse 43 | 62L |
| N22/4 | Rear automatic air conditioning operating unit | 73L |
| N22/7 | Automatic air conditioning control and operating unit | 4A |
| N22/7 | Automatic air conditioning control and operating unit | 12A |
| N22/7 | Automatic air conditioning control and operating unit | 28A |
| N22/7 | Automatic air conditioning control and operating unit | 20A |
| N22/7 | Automatic air conditioning control and operating unit | 36A |
| N22/7 | Automatic air conditioning control and operating unit | 44A |
| N22/7 | Automatic air conditioning control and operating unit | 52A |
| N22/7 | Automatic air conditioning control and operating unit | 61A |
| N22/7 | Automatic air conditioning control and operating unit | 69A |
| N22/7 | Automatic air conditioning control and operating unit | 76A |
| N22/7s1 | Rear window heater button | 3A |
| N22/7s2 | Air recirculation mode button | 9A |
| N70/3 | Overhead control panel electronics | 23L |
| N70/3b1 | Interior temperature sensor with integrated fan | 24L |
| U1018 | Valid for gasoline engine 276 | 35E |
| U111 | Valid for overhead control panel without CAN | 22G |
| U12 | Valid for left-hand drive vehicles | 10E |
| U12 | Valid for left-hand drive vehicles | 3C |
| U12 | Valid for left-hand drive vehicles | 42H |
| U12 | Valid for left-hand drive vehicles | 59H |
| U13 | Valid for right-hand drive vehicles | 10E |
| U13 | Valid for right-hand drive vehicles | 3D |
| U13 | Valid for right-hand drive vehicles | 42J |
| U13 | Valid for right-hand drive vehicles | 59H |
| U152 | Valid for gasoline engine 156 | 29E |
| U157 | Valid for combustion engine 272 DE | 33E |
| U169 | Valid for gasoline engine 271 DE | 33F |
| U328 | Valid for air outlet symbol illumination | 50E |
| U328 | Valid for air outlet symbol illumination | 74D |
| U329 | Valid without air outlet symbol illumination | 73D |
| U486 | Valid for refrigerant compressor | 35H |
| U487 | Valid for refrigerant compressor with magnetic clutch | 37H |
| U57 | Valid for model 204.2 | 65H |
| U58 | Valid for model 204.0 | 65H |
| U59 | Valid for model 204.9 | 65H |
| U617 | Interior humidity/temperature sensor | 18H |
| U617 | Interior humidity/temperature sensor | 17H |
| U617 | Interior humidity/temperature sensor | 16H |
| U617 | Interior humidity/temperature sensor | 26E |
| U739 | Valid for gasoline engine 271 continuous fuel injection system (electronic) | 33E |
| U74 | Valid for diesel engines | 10F |
| U74 | Valid for diesel engines | 10E |
| U740 | Valid for diesel engine 646 | 32E |
| U75 | Valid for gasoline engines | 10F |
| U819 | Valid for gasoline engine 272 | 33E |
| U880 | Valid for diesel engine 642 | 28E |
| U948 | Valid for diesel engine 651 | 33F |
| U948 | Valid for diesel engine 651 | 35E |
| W15/5 | Left front footwell ground point | 4E |
| W15/5 | Left front footwell ground point | 43L |
| W15/5 | Left front footwell ground point | 59L |
| W15/7 | Right front footwell ground point | 4E |
| W15/7 | Right front footwell ground point | 43L |
| W15/7 | Right front footwell ground point | 59L |
| W16/3 | Left major assembly compartment ground point | 11G |
| W16/3 | Left major assembly compartment ground point | 11G |
| W16/5 | Left major assembly compartment electronics ground point | 11G |
| W18 | Left front seat crossmember ground point | 65L |
| W18/3 | Left front seat crossmember ground point 2 | 65L |
| X15/12 | Vehicle interior/cockpit temperature sensor electrical connector | 44H |
| X18/35 | Instrument panel and vehicle floor electrical connector | 66G |
| X18/35 | Instrument panel and vehicle floor electrical connector | 68G |
| X18/35 | Instrument panel and vehicle floor electrical connector | 76G |
| X226 | Electrical connector / fogging sensor | 26H |
| X26 | Interior and engine wiring harness electrical connector | 28H |
| X26 | Interior and engine wiring harness electrical connector | 30H |
| X26 | Interior and engine wiring harness electrical connector | 34H |
| X26 | Interior and engine wiring harness electrical connector | 32H |
| X30/32 | Left vehicle floor interior CAN voltage distributor electrical connector | 48L |
| Z50/1 | Circuit 58d instrument panel connector sleeve | 5G |
| Z50/1 | Circuit 58d instrument panel connector sleeve | 53G |
| Z50/3 | Circuit 31 instrument panel connector sleeve | 42G |
| Z50/3 | Circuit 31 instrument panel connector sleeve | 52G |
| Z50/38 | Connector sleeve / air conditioning circuit 31 | 7E |
| Z50/38 | Connector sleeve / air conditioning circuit 31 | 16E |
| Z6/85 | Sensor ground connector sleeve | 2E |
| Z6/85 | Sensor ground connector sleeve | 45E |
| Z6/85 | Sensor ground connector sleeve | 78E |
| Z68/11 | Rear air conditioning LIN bus ground line connector sleeve | 71L |
| Z68/11 | Rear air conditioning LIN bus ground line connector sleeve | 74L |
| Z68/3 | Vehicle interior LIN bus ground line connector sleeve | 7G |
| Z68/3 | Vehicle interior LIN bus ground line connector sleeve | 17E |
| Z68/3 | Vehicle interior LIN bus ground line connector sleeve | 70E |
| Z7/21 | Air conditioning circuit 30 connector sleeve | 7G |
| Z7/21 | Air conditioning circuit 30 connector sleeve | 15E |
| Z7/21 | Air conditioning circuit 30 connector sleeve | 69E |
| Z81/11 | Air conditioning circuit 58d connector sleeve | 75G |