(Drivetrain Control Unit, Component Description - GF54.21-P-2141OGS)
Model 213, 238 with engine 656.9 up to model year 2021
Model 222 with engine 642.8
Illustration shows model 213
Location
The powertrain control unit is located in the front passenger footwell and it is fastened to the engine compartment's partition wall.
Tasks
The powertrain control unit is responsible for the following tasks:
- Reading in of signals
- Evaluation of input factors
- Output of signals and activation of components
In addition to this, the powertrain control unit acts as an interface (gateway) between the connected CAN bus systems.
Reading in of signals
The input factors are read in via the following connections:
- Direct line
- Drive-train-LIN (LIN C3)
- Engine CAN (CAN C)
- Drive train CAN (CAN C1)
- Suspension FlexRay (Flex E)
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor whereupon the corresponding components are actuated and corresponding signals are output.
Output of signals and activation of components
The output of signals and the actuation of components take place via the following connections:
- Direct line
- Drivetrain LIN
- Engine CAN
- Drive train CAN
- Chassis FlexRay
The electronic ignition lock control unit (N73) is the central interface (Gateway) for exchanging the function-relevant data of the control units that are connected to the various CAN bus systems.
| Input factors over a direct line | Initial parameters over a direct line | Supplemental information |
|---|---|---|
| Low temperature circuit temperature sensor (B10/13) | - | - |
| Accelerator pedal sensor (B37) | - | - |
| Exhaust flap controller (M16/57) | Exhaust flap controller (M16/57) | - |
| Input factors over drivetrain LIN | Output factors over drivetrain LIN | Supplemental information |
|---|---|---|
| - | Low-temperature circuit circulation pump 1 (M43/6) | - |
| - | Low temperature circuit circulation pump 2 (M43/7) | Model 213, 238 |
| Fan motor (M4/7) | Fan motor (M4/7) | - |
| Radiator shutters actuator motor (M87) | Radiator shutters actuator motor (M87) | Model 222 with engine 642.8 |
| Upper radiator trim flap actuator motor (M2/38) | Upper radiator trim flap actuator motor (M2/38) | Model 213 with code 2U1 (Radiator shutters) |
| Lower radiator trim flap actuator motor (M2/39) | Lower radiator trim flap actuator motor (M2/39) | Model 213 with code 2U1 (Radiator shutters) |
| Input factors via engine CAN | Output factors via engine CAN | Supplemental information |
|---|---|---|
| CDI control unit (N3/9) | CDI control unit (N3/9) | - |
| Input factors via drive CAN | Output factors via drive CAN | Supplemental information |
|---|---|---|
| Fuel system control unit (N118) | Fuel system control unit (N118) | - |
| Fully integrated transmission control unit (Y3/8n4) | Fully integrated transmission control unit (Y3/8n4) | With code 427 (7G-TRONIC) or with code 421 (9G-TRONIC) |
| CDI control unit (N3/9) | CDI control unit (N3/9) | - |
| Input factors via suspension FlexRay | Output factors via suspension FlexRay | Supplemental information |
|---|---|---|
| Electronic Stability Program control unit (N30/4) | Electronic Stability Program control unit (N30/4) | - |
| AIRmatic control unit (N51/3) | AIRmatic control unit (N51/3) | Model 222 |
| AIR BODY CONTROL, control unit (N51/3) | AIR BODY CONTROL, control unit (N51/3) | Model 213, 238 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) | - |
| Wiring diagram for powertrain control unit | Model 213 with engine 656.9 up to model year 2021 | PE54.21-P-2141-97DBA | |
| Model 238 with engine 656.9 up to model year 2021 | PE54.21-P-2141-97DCA | ||
| Model 222 with engine 642.8 | PE54.21-P-2141-97SEA |