Drivetrain Control Unit, Component Description - GF54.21-P-2141MRP
Model 213, 238 with engine 264.9, 274.9, 276.8 up to model year 2021
Model 257 with engine 264.9 up to model year 2021
Shown on model 213.0
Fig 1: Drivetrain Control Unit Component Location - Model 213 With Engine 264.9, 274.9, 276.8 Up To Model Year 2021
Location
The powertrain control unit is mounted in the vehicle interior on the partition to the engine compartment.
Tasks
The powertrain control unit acts as the interface between the ME-SFI control unit (N3/10) and the CAN network, and it is responsible for the following tasks:
- Reading in of signals
- Evaluation of input factors
- Output of signals and activation of components
The electronic ignition lock control unit (N73) is the central gateway for exchanging the function-relevant data of the control units that are connected to the various CAN bus systems.
Reading in of signals
The input factors are read in via the following connections:
- Direct line
- Engine CAN (CAN C)
- Drive train CAN (CAN C1)
- Hybrid CAN (CAN L) (model 213.050/053/054/253 or with code B01 (48V technology))
- Periphery CAN (CAN PER)
- Suspension FlexRay (Flex E)
- Drive-train LIN (LIN C3)
- Exhaust LIN (LIN C4)
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.
Output of signals and activation of components
The initial parameters are output via the following connections:
- Direct line
- Engine CAN
- Drive train CAN
- Hybrid CAN (model 213.050/053/054/253 or with code B01 (48V technology))
- Peripherals CAN
- Chassis FlexRay
- Drivetrain LIN
- Exhaust LIN
Input factors and output factors for the following components are read in or output over direct lines by the powertrain control unit:
| Input factors over a direct line from | Output factors over a direct line to | Supplemental information |
|---|---|---|
| Low temperature circuit temperature sensor (B10/13) | - | - |
| Low-temperature circuit temperature sensor 2 (B10/14) | - | Model 213.050/053/054/253 or with code B01 (48V technology) |
| Accelerator pedal sensor (B37) | - | - |
| Clutch pedal sensor (B53/1) | - | Transmission 716 |
| Manual transmission main shifter shaft position sensor (B79/3) | - | Transmission 716 |
| - | CPC relay (K40/8kJ) | - |
| - | Left exhaust flap actuator motor (M16/53) | Engine 264.9 in model 257 with code U21 (AMG Performance exhaust system), engine 264.9, 274.9 in model 238 up to model year 2019 with code U21 (AMG Performance exhaust system), engine 274.9, 276.8 in model 213 with code U21 (AMG Performance exhaust system) and engine 276.8 in model 238 with code U21 (AMG Performance exhaust system) |
| Warm start signal from front SAM control unit (N10/6) | - | Model 213.050/053/054/253 |
| High-voltage battery cooling system expansion valve (Y110) | High-voltage battery cooling system expansion valve (Y110) | Model 213.050/053/054/253 |
| - | High-voltage battery cooling system switchover valve (Y140) | Model 213.050/053/054/253 |
Input factors and output factors for the following components and control units are sent or received by the powertrain control unit over LIN or CAN:
| Input factors over engine CAN (CAN C) from | Initial parameters over engine CAN (CAN C) to | Supplemental information |
|---|---|---|
| ME-SFI [ME] control unit (N3/10) | ME-SFI [ME] control unit (N3/10) | - |
| Input factors over drive CAN (CAN C1) from | Initial parameters over drive CAN (CAN C1) to | Supplemental information |
|---|---|---|
| Accelerator pedal module control unit (B37n1) | Accelerator pedal module control unit (B37n1) | Model 213.050/053/054/253 |
| ME-SFI [ME] control unit (N3/10) | ME-SFI [ME] control unit (N3/10) | - |
| Fuel system control unit (N118) | Fuel system control unit (N118) | - |
| Control unit for electric controller unit of fully integrated transmission control (Y3/8n4) | Control unit for electric controller unit of fully integrated transmission control (Y3/8n4) | - |
| Input factors via hybrid CAN (CAN L) from (model 213.050/053/054/253 or with code B01 (48V technology)) | Output factors via hybrid CAN (CAN L) to (model 213.050/053/054/253 or with code B01 (48V technology)) | Supplemental information |
|---|---|---|
| Starter alternator (M1/10) | Starter alternator (M1/10) | With code B01 (48V technology) |
| Battery management system control unit (N82/2) | Battery management system control unit (N82/2) | Model 213.050/053/054/253 |
| Power electronics control unit (N129/1) | Power electronics control unit (N129/1) | Model 213.050/053/054/253 |
| Input factors via peripherals CAN (CAN PER) from | Output factors via peripherals CAN (CAN PER) to | Supplemental information |
|---|---|---|
| Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | - |
| Input factors via suspension FlexRay (Flex E) from | Output factors via suspension FlexRay (Flex E) to | Supplemental information |
|---|---|---|
| Electronic Stability Program control unit (N30/4) | Electronic Stability Program control unit (N30/4) | - |
| AIR BODY CONTROL, control unit (N51/3) | AIR BODY CONTROL, control unit (N51/3) | With code 489 (AIR BODY CONTROL) |
| Mercedes-Benz Intelligent Drive control unit (N62/4) | Mercedes-Benz Intelligent Drive control unit (N62/4) | With CODE 23P (Driving assistance package) |
| Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | - |
| Steering column tube module control unit (N80) | Steering column tube module control unit (N80) | - |
| Input factors over drive train LIN (LIN C3) from | Output factors over drive train LIN (LIN C3) to | Supplemental information |
|---|---|---|
| Radiator sensor for engine diagnosis (B11/15) | Radiator sensor for engine diagnosis (B11/15) | Model 213.050/053/054/253 with code 494 (USA version) |
| Radiator trim flap actuator (M2/37) | Radiator trim flap actuator (M2/37) | Model 213 with code 5U3 (AIRPANEL) and code P23 (EXCLUSIVE exterior) or code P76 (Exterior standard equipment) |
| Upper radiator trim flap actuator motor (M2/38) | Upper radiator trim flap actuator motor (M2/38) | with code 2U1 (Radiator shutters) |
| Lower radiator trim flap actuator motor (M2/39) | Lower radiator trim flap actuator motor (M2/39) | With code 2U1 (Radiator shutters), model 213 with code 5U3 (AIRPANEL) |
| Fan motor (M4/7) | Fan motor (M4/7) | - |
| Low-temperature circuit circulation pump 1 (M43/6) | Low-temperature circuit circulation pump 1 (M43/6) | - |
| Low temperature circuit circulation pump 2 (M43/7) | Low temperature circuit circulation pump 2 (M43/7) | Model 213.050/053/054/253 or with code B01 (48V technology) |
| Electric coolant pump (M75/11) | Electric coolant pump (M75/11) | Model 213.050/053/054/253 |
| Low-temperature circuit switchover valve (Y73/1) | Low-temperature circuit switchover valve (Y73/1) | Model 213.050/053/054/253 |
| Low-temperature circuit switchover valve 2 (Y73/2) | Low-temperature circuit switchover valve 2 (Y73/2) | Model 213.050/053/054/253 |
| Input factors via exhaust LIN (LIN C4) from | Output factors via exhaust LIN (LIN C4) to | Supplemental information |
|---|---|---|
| Left exhaust flap actuator motor (M16/53) | Left exhaust flap actuator motor (M16/53) | Engine 264.9, 274.9 in model 238 as of model year 2019 with code U21 (AMG Performance exhaust system) and engine 264.9 in model 213 with code U21 (AMG Performance exhaust system) |
Variants
The control unit variants, e.g. national, exhaust and function variants, are activated by diagnostic testers using the variant coding function.
| Wiring diagram for powertrain control unit | Model 213 with engine 274.9, 276.8 up to model year 2021 | PE54.21-P-2141-97DBA | |
| Model 238 with engine 264.9, 274.9, 276.8 up to model year 2021 | PE54.21-P-2141-97DCA | ||
| Model 257 with engine 264.9 up to model year 2021 | PE54.21-P-2141-97XBA |