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Home >> Mercedes Benz >> 2021 >> GLC300 Base >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 253 Chassis 8 Of 9 >> Wiring Diagrams >> Wiring Diagram For Drivetrain Control Unit >> Wiring Diagram For Drivetrain Control Unit - PE54.21-P-2141-97FCB

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
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G14474920Courtesy of MERCEDES-BENZ USA
G14474921Courtesy of MERCEDES-BENZ USA
G14474922Courtesy of MERCEDES-BENZ USA
G14474923Courtesy of MERCEDES-BENZ USA
G14474924Courtesy of MERCEDES-BENZ USA
G14474925Courtesy of MERCEDES-BENZ USA
G14474926Courtesy of MERCEDES-BENZ USA
G14474927Courtesy of MERCEDES-BENZ USA
G14474928Courtesy of MERCEDES-BENZ USA
G14474929Courtesy of MERCEDES-BENZ USA