Wiring Diagram For Drivetrain Control Unit - PE54.21-P-2141-97FCB
Model 253 (except 253.99)
as of model year 2020
Control unit N127
| Code: | Designation: | Position: |
|---|---|---|
| A0 | Use of wiring diagrams | 218L |
| B10/13 | Low-temperature circuit temperature sensor | 190L |
| B10/13 | Low-temperature circuit temperature sensor | 187L |
| B10/14 | Low-temperature circuit temperature sensor 2 | 42L |
| B11/7 | Low-temperature coolant circuit 2 temperature sensor | 45L |
| B37 | Accelerator pedal sensor | 18L |
| B37m1 | Accelerator pedal module actuator motor | 19L |
| B37n1 | Accelerator pedal module control unit | 20L |
| CAN C | Engine CAN | 26J |
| CAN C | Engine CAN | 31J |
| CAN C1 | Drive train CAN | 22K |
| CAN L | Hybrid CAN | 162K |
| CAN PER | Peripherals CAN | 35K |
| Code 2U1 | Radiator shutters | 69D |
| Code 2U1 | Radiator shutters | 71D |
| Code 945 | China Stage 6 exhaust treatment | 60D |
| Code B01 | 48V technology | 75G |
| Code B01 | 48V technology | 104G |
| Code B01 | 48V technology | 40F |
| Code B01 | 48V technology | 161C |
| Code L | LEFT-HAND DRIVE | 48G |
| Code L | LEFT-HAND DRIVE | 65G |
| Code L | LEFT-HAND DRIVE | 4E |
| Code L | LEFT-HAND DRIVE | 118G |
| Code L | LEFT-HAND DRIVE | 121G |
| Code M177 | SPARK-IGNITION ENGINE M177 | 25K |
| Code M177 | SPARK-IGNITION ENGINE M177 | 64D |
| Code M177 | SPARK-IGNITION ENGINE M177 | 111G |
| Code M177 | SPARK-IGNITION ENGINE M177 | 139G |
| Code M177 | SPARK-IGNITION ENGINE M177 | 167D |
| Code M264 | SPARK-IGNITION ENGINE M264 | 25K |
| Code M264 | SPARK-IGNITION ENGINE M264 | 164D |
| Code M264 | SPARK-IGNITION ENGINE M264 | 171D |
| Code M274 | SPARK-IGNITION ENGINE M274 | 25K |
| Code M274 | SPARK-IGNITION ENGINE M274 | 90G |
| Code M274 | SPARK-IGNITION ENGINE M274 | 100G |
| Code M274 | SPARK-IGNITION ENGINE M274 | 60D |
| Code M276 | SPARK-IGNITION ENGINE M276 | 25K |
| Code M276 | SPARK-IGNITION ENGINE M276 | 107G |
| Code M654 | DIESEL ENGINE OM654 | 29K |
| Code M654 | DIESEL ENGINE OM654 | 82G |
| Code M654 | DIESEL ENGINE OM654 | 86G |
| Code M654 | DIESEL ENGINE OM654 | 48D |
| Code M654 | DIESEL ENGINE OM654 | 178D |
| Code M654 | DIESEL ENGINE OM654 | 125C |
| Code M654 | DIESEL ENGINE OM654 | 188D |
| Code M656 | 6-CYLINDER INLINE DIESEL ENGINE OM656 | 29K |
| Code M656 | 6-CYLINDER INLINE DIESEL ENGINE OM656 | 107G |
| Code M656 | 6-CYLINDER INLINE DIESEL ENGINE OM656 | 52D |
| Code M656 | 6-CYLINDER INLINE DIESEL ENGINE OM656 | 139G |
| Code M656 | 6-CYLINDER INLINE DIESEL ENGINE OM656 | 178D |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 82G |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 86G |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 90G |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 100G |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 15E |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 43F |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 114G |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 139G |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 126C |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 153C |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 161D |
| Code ME05 | HYBRID DRIVE 80 KW VARIANT (INCLUDING PLUGIN) | 191D |
| Code R | RIGHT-HAND DRIVE | 48G |
| Code R | RIGHT-HAND DRIVE | 65G |
| Code R | RIGHT-HAND DRIVE | 4F |
| Code R | RIGHT-HAND DRIVE | 134C |
| Code U16 | Exhaust system with acoustic flap | 164D |
| Code U21 | AMG Performance exhaust system | 164D |
| Code U21 | AMG Performance exhaust system | 171D |
| Code U78 | AMG Sport exhaust system | 167E |
| Code U78 | AMG Sport exhaust system | 169E |
| F1/3 | Passenger-side A-pillar fuse box | 5L |
| F1/3f315 | Fuse 315 | 4L |
| F32/3 | Engine compartment pre-fuse box | 98L |
| F32/3f7 | Fuse 7 | 96K |
| Flex E | Chassis FlexRay | 38K |
| Flex E | Chassis FlexRay | 37K |
| Flex E | Chassis FlexRay | 39K |
| K40/8 | Engine fuse and relay module | 11L |
| K40/8 | Engine fuse and relay module | 123L |
| K40/8 | Engine fuse and relay module | 137L |
| K40/8 | Engine fuse and relay module | 152L |
| K40/8 | Engine fuse and relay module | 174L |
| K40/8f101 | Fuse 101 | 173L |
| K40/8f118 | Fuse 118 | 122L |
| K40/8f118 | Fuse 118 | 135L |
| K40/8f119 | Fuse 119 | 8L |
| K40/8f125 | Fuse 125 | 14L |
| LIN C3 | Drivetrain LIN | 62K |
| LIN C3 | Drivetrain LIN | 50K |
| LIN C3 | Drivetrain LIN | 58K |
| LIN C3 | Drivetrain LIN | 66K |
| LIN C3 | Drivetrain LIN | 78K |
| LIN C3 | Drivetrain LIN | 76K |
| LIN C3 | Drivetrain LIN | 83K |
| LIN C3 | Drivetrain LIN | 87K |
| LIN C3 | Drivetrain LIN | 91K |
| LIN C3 | Drivetrain LIN | 106K |
| LIN C3 | Drivetrain LIN | 102K |
| LIN C3 | Drivetrain LIN | 109K |
| LIN C3 | Drivetrain LIN | 113K |
| LIN C3 | Drivetrain LIN | 116K |
| LIN C3 | Drivetrain LIN | 119K |
| LIN C3 | Drivetrain LIN | 132K |
| LIN C3 | Drivetrain LIN | 130K |
| LIN C3 | Drivetrain LIN | 141K |
| LIN C3 | Drivetrain LIN | 144K |
| LIN C3 | Drivetrain LIN | 166K |
| LIN C4 | Exhaust LIN | 169J |
| LIN C4 | Exhaust LIN | 177K |
| M13/7 | Transmission oil cooling coolant circulation pump | 119L |
| M13/7 | Transmission oil cooling coolant circulation pump | 143L |
| M16/53 | Left exhaust flap actuator motor | 166L |
| M16/53 | Left exhaust flap actuator motor | 169K |
| M16/53 | Left exhaust flap actuator motor | 184L |
| M16/54 | Right exhaust flap actuator motor | 169L |
| M16/55 | Center exhaust flap actuator motor | 169L |
| M4/7 | Fan motor | 93L |
| M4/7 | Fan motor | 79L |
| M4/7 | Fan motor | 84L |
| M4/7 | Fan motor | 88L |
| M43/6 | Low temperature circuit circulation pump 1 | 50L |
| M43/6 | Low temperature circuit circulation pump 1 | 109L |
| M43/6 | Low temperature circuit circulation pump 1 | 129L |
| M43/6 | Low temperature circuit circulation pump 1 | 141L |
| M43/7 | Low temperature circuit circulation pump 2 | 58L |
| M43/7 | Low temperature circuit circulation pump 2 | 106L |
| M43/7 | Low temperature circuit circulation pump 2 | 113L |
| M44 | Charge air cooler circulation pump | 76L |
| M45 | Coolant circulation pump | 116L |
| M75/11 | Electric coolant pump | 62L |
| N10/6 | Front SAM control unit | 158L |
| N127 | Drivetrain control unit | 37L |
| N127 | Drivetrain control unit | 4A |
| N127 | Drivetrain control unit | 12A |
| N127 | Drivetrain control unit | 20A |
| N127 | Drivetrain control unit | 28A |
| N127 | Drivetrain control unit | 36A |
| N127 | Drivetrain control unit | 44A |
| N127 | Drivetrain control unit | 52A |
| N127 | Drivetrain control unit | 60A |
| N127 | Drivetrain control unit | 68A |
| N127 | Drivetrain control unit | 84A |
| N127 | Drivetrain control unit | 76A |
| N127 | Drivetrain control unit | 92A |
| N127 | Drivetrain control unit | 100A |
| N127 | Drivetrain control unit | 108A |
| N127 | Drivetrain control unit | 116A |
| N127 | Drivetrain control unit | 124A |
| N127 | Drivetrain control unit | 132A |
| N127 | Drivetrain control unit | 140A |
| N127 | Drivetrain control unit | 148A |
| N127 | Drivetrain control unit | 156A |
| N127 | Drivetrain control unit | 164A |
| N127 | Drivetrain control unit | 172A |
| N127 | Drivetrain control unit | 180A |
| N127 | Drivetrain control unit | 188A |
| N127 | Drivetrain control unit | 194A |
| N127 | Drivetrain control unit | 201A |
| N127 | Drivetrain control unit | 210A |
| N3/10 | ME-SFI [ME] control unit | 26L |
| N3/9 | CDI control unit | 31L |
| N80 | Steering column module control unit | 39L |
| S41/1 | High-temperature circuit coolant fill level sensor | 46L |
| U1095 | Valid for fan motor 600W | 81J |
| U1095 | Valid for fan motor 600W | 80J |
| U1095 | Valid for fan motor 600W | 77G |
| U1096 | Valid for fan motor 850W | 81J |
| U1096 | Valid for fan motor 850W | 80J |
| U1096 | Valid for fan motor 850W | 77G |
| W15/5 | Left front footwell ground point | 49G |
| W15/5 | Left front footwell ground point | 65G |
| W15/5 | Left front footwell ground point | 5F |
| W15/5 | Left front footwell ground point | 179H |
| W15/6 | Left front footwell ground point (CAN) | 65G |
| W15/7 | Right front footwell ground point | 5E |
| W16 | Major assembly compartment ground point | 49G |
| W16/4 | Right major assembly compartment ground point | 94G |
| W16/4 | Right major assembly compartment ground point | 181H |
| W2 | Right front ground point (at lamp unit) | 103G |
| W2 | Right front ground point (at lamp unit) | 109G |
| W2 | Right front ground point (at lamp unit) | 112G |
| W2 | Right front ground point (at lamp unit) | 119G |
| W2 | Right front ground point (at lamp unit) | 141H |
| W2 | Right front ground point (at lamp unit) | 143H |
| W2/2 | Left front ground point | 80G |
| W2/2 | Left front ground point | 88G |
| W3/11 | Left rear wheel well ground point | 165G |
| W3/11 | Left rear wheel well ground point | 177H |
| W9 | Left front ground point (at lamp unit) | 75G |
| W9 | Left front ground point (at lamp unit) | 84G |
| W9 | Left front ground point (at lamp unit) | 106G |
| W9 | Left front ground point (at lamp unit) | 116G |
| W9 | Left front ground point (at lamp unit) | 126H |
| X101/4 | Right rear frame floor assembly/underfloor electrical connector | 182H |
| X192/1 | Coolant run-on pump electrical connector | 127E |
| X25/7 | Engine compartment/frame floor assembly electrical connector | 13G |
| X25/7 | Engine compartment/frame floor assembly electrical connector | 70J |
| X25/7 | Engine compartment/frame floor assembly electrical connector | 92J |
| X25/7 | Engine compartment/frame floor assembly electrical connector | 6E |
| X25/7 | Engine compartment/frame floor assembly electrical connector | 151H |
| X25/7 | Engine compartment/frame floor assembly electrical connector | 172H |
| X25/7 | Engine compartment/frame floor assembly electrical connector | 195H |
| X26 | Interior and engine wiring harness electrical connector | 58H |
| X26 | Interior and engine wiring harness electrical connector | 62H |
| X30/21 | Drive train CAN (CAN C1) potential distributor electrical connector | 22L |
| X30/27 | Peripherals CAN (CAN PER) potential distributor electrical connector | 35L |
| X30/44 | Hybrid CAN (CAN L) potential distributor electrical connector | 162L |
| X30/63 | Potential distributor electrical connector | 53K |
| X49 | Potential distributor | 54L |
| Y123 | Left switchable engine mount | 179L |
| Y123/1 | Right switchable engine mount | 181L |
| Y140 | High-voltage battery cooling system switchover valve | 155L |
| Y16/8 | Coolant pump switchover valve | 66L |
| Y19/1 | High-voltage battery cooling system shutoff valve | 194L |
| Y73/1 | Low-temperature circuit switchover valve | 102L |
| Y73/1 | Low-temperature circuit switchover valve | 132L |
| Y93 | Exhaust flap switchover valve | 177L |
| Z141/1z1 | Circuit 87 C1 connector sleeve | 7G |
| Z141/1z1 | Circuit 87 C1 connector sleeve | 85E |
| Z141/2z1 | Circuit 87C connector sleeve | 121E |
| Z141/2z1 | Circuit 87C connector sleeve | 195E |
| Z142/2z1 | LIN end sleeve | 168G |
| Z142/5z1 | Powertrain control unit LIN connector sleeve | 130G |
| Z142z1 | Powertrain control unit LIN connector sleeve | 84E |
| Z142z1 | Powertrain control unit LIN connector sleeve | 141G |
| Z142z1 | Powertrain control unit LIN connector sleeve | 143G |
| Z148/1z1 | Drivetrain circuit 31 connector sleeve | 192G |
| Z148/1z1 | Drivetrain circuit 31 connector sleeve | 185E |
| Z4/3z1 | Tml. 30 connector sleeve | 3G |
| Z50/5z1 | Tml. 15 connector sleeve | 13E |
| Z6/149z1 | Ground connection connector sleeve | 127G |
| Z6/8z1 | Sensor ground connector sleeve | 42E |
| Z68/20z1 | Vehicle interior LIN bus connector sleeve | 90L |
| Z68/20z1 | Vehicle interior LIN bus connector sleeve | 70F |
| Z7/104z1 | Circuit 87 C2 connector sleeve | 128G |
| Z7/48z1 | Circuit 87/2 connector sleeve | 51G |
| Z7/48z1 | Circuit 87/2 connector sleeve | 67G |
| Z7/48z1 | Circuit 87/2 connector sleeve | 59E |
| Z7/48z1 | Circuit 87/2 connector sleeve | 176G |
| Z7/48z1 | Circuit 87/2 connector sleeve | 165E |