Drivetrain Control Unit, Component Description - GF54.21-P-2141MNB
Engine 178.9 in Model 190
Shown On Model 190.377
Location
The powertrain control unit is located below the left A-pillar behind the cockpit trim.
Tasks
The powertrain control unit acts as an interface (gateway) between the ME-SFI [ME] control unit (N3/10) and the CAN network and it is responsible for the following tasks:
- Reading in of signals
- Output of signals and actuation of components
Apart from this, the powertrain control unit acts as an interface between the connected CAN bus systems.
Tasks
The powertrain control unit acts as an interface (gateway) between the ME-SFI [ME] control unit (N3/10) and the CAN network and it is responsible for the following tasks:
- Reading in of signals
- Output of signals and actuation of components
Apart from this, the powertrain control unit acts as an interface between the connected CAN bus systems.
Reading in of signals
Input factors are read in by means of the following connections:
- Direct line
- Drive-train-LIN (LIN C3)
- Engine CAN (CAN C)
- Drive train CAN (CAN C1)
- Chassis CAN 1 (CAN E1)
Output of signals and actuation of components
Initial parameter are output over the following connections:
- Drivetrain LIN
- Engine CAN
- Drive train CAN
- Chassis CAN 1
The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.
The front SAM control unit with fuse and relay module (N10/1) is the central interface (Gateway) for exchange of function-relevant data for control units which are connected to the various Control Area Network (CAN) bus systems.
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 control unit (N3/10) | ME-SFI control unit (N3/10) | - |
| Input factors over drive CAN (CAN C1) from | Initial parameters over drive CAN (CAN C1) to | Supplemental information |
|---|---|---|
| ME-SFI control unit (N3/10) | ME-SFI control unit (N3/10) | - |
| AMG suspension control unit (N3/43) | AMG suspension control unit (N3/43) | With code 366 (Active engine mount) |
| Dual clutch transmission control unit (N15/13) | Dual clutch transmission control unit (N15/13) | - |
| Fuel system control unit (N118) | Fuel system control unit (N118) | - |
| Input factors over chassis CAN 1 (CAN E1) from | Output factors over chassis CAN 1 (CAN E1) to | Supplemental information |
|---|---|---|
| Instrument cluster (A1) | Instrument cluster (A1) | Via user interface CAN (CAN HMI) and AMG gateway control unit (N93/9) |
| Head unit (A26/17) | Head unit (A26/17) | Via user interface CAN (CAN HMI) and AMG gateway control unit (N93/9) |
| Audio/COMAND control panel (A40/9) | Audio/COMAND control panel (A40/9) | Via telematics CAN (CAN A), head unit (A26/17), user interface CAN (CAN HMI) and AMG gateway control unit (N93/9) |
| COLLISION PREVENTION ASSIST controller unit (A90) | COLLISION PREVENTION ASSIST controller unit (A90) | With CODE 258 (COLLISION PREVENTION ASSIST) |
| Supplemental Restraint System control unit (N2/10) | Supplemental Restraint System control unit (N2/10) | - |
| Climate control control unit (N22/1) | Climate control control unit (N22/1) | Via interior CAN (CAN B) and AMG gateway control unit (N93/9) |
| Front SAM control unit with fuse and relay module (N10/1) | Front SAM control unit with fuse and relay module (N10/1) | - |
| Electronic Stability Program control unit (N30/4) | Electronic Stability Program control unit (N30/4) | - |
| Adaptive damping system control unit (N51/5) | Adaptive damping system control unit (N51/5) | With code 479 (AMG RIDE CONTROL sport suspension) |
| Left door control unit (N69/1) | Left door control unit (N69/1) | Via interior CAN (CAN B) and front SAM control unit with fuse and relay module (N10/1) |
| 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) | - |
| AMG gateway control unit (N93/9) | AMG gateway control unit (N93/9) | - |
| Diagnostic connector (X11/4) | Diagnostic connector (X11/4) | Via diagnostic CAN (CAN D) and front SAM control unit with fuse and relay module (N10/1) |
| Input factors over drive train-LIN (LIN C3) from | Output factors over drive train-LIN (LIN C3) to | Supplemental information |
|---|---|---|
| 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) | - |
| Shutoff valve (Y107/7) | Shutoff valve (Y107/7) | - |
Structure
The powertrain control unit housing is made of plastic. The dust-proof powertrain control unit is installed in the vehicle interior.
| Wiring diagram for powertrain control unit | N127 | PE54.21-P-2141-97HBA |