Drivetrain control unit, component description - GF54.21-P-2141OLC
MODEL 205.012/212 with ENGINE 651.9
Shown on model 205.0
Location
The powertrain control unit is installed below the footwell trim in the front passenger footwell.
Task
The powertrain control unit is responsible for the following tasks:
- Reading in of sensors and signals
- Output of signals and actuation of components
In addition to this, the powertrain control unit acts as an interface (gateway) between the connected CAN bus systems.
Reading in of sensors and 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 FlexRay (Flex E)
- Hybrid drive CAN (CAN L)
Output of signals and actuation of components
Initial parameter are output over the following connections:
- Direct line
- Drivetrain LIN
- Engine CAN
- Drive train CAN
- Chassis FlexRay
- Hybrid drive CAN
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 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 | Initial parameters over a direct line | Supplemental information |
|---|---|---|
| Terminal 15 | - | - |
| Terminal 30 | - | - |
| Circuit 30 (fused) | - | - |
| Circuit 31 | - | - |
| - | Circuit 87C | - |
| Low temperature circuit temperature sensor (B10/13) |
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) | Output factors via engine CAN (CAN C) | Supplemental information |
|---|---|---|
| CDI control unit (N3/9) | CDI control unit (N3/9) | - |
| Input factors via drive train CAN (CAN C1) | Output factors via Drive train CAN (CAN C1) |
Supplemental information |
|---|---|---|
| CDI control unit (N3/9) | CDI control unit (N3/9) | - |
| Fuel system control unit (N118) | Fuel system control unit (N118) | - |
| Fully integrated transmission control unit (Y3/8n4) | Fully integrated transmission control unit (Y3/8n4) | - |
| Input factors via Hybrid CAN (CAN L) | Output factors via Hybrid CAN (CAN L) | Supplemental information |
|---|---|---|
| Battery management system control unit (N82/2) | Battery management system control unit (N82/2) | - |
| Power electronics control unit (N129/1) | Power electronics control unit (N129/1) | - |
| Input factors over drive-train-LIN (LIN C3) | Output factors over drive-train-LIN (LIN C3) | Supplemental information |
|---|---|---|
| Fan motor (M4/7) | Fan motor (M4/7) | - |
| Radiator shutters actuator motor (M87) | Radiator shutters actuator motor (M87) | - |
| Low-temperature circuit switchover valve (Y73/1) | Low-temperature circuit switchover valve (Y73/1) | - |
| Low-temperature circuit circulation pump 1 (M43/6) | Low-temperature circuit circulation pump 1 (M43/6) | - |
| Input factors over chassis FlexRay (Flex E) | Output factors over chassis FlexRay (Flex E) | Supplemental information |
|---|---|---|
| Electronic Stability Program control unit (N30/4) | - | |
| AIRMATIC control unit (N51/3) | (with CODE 483 (Dynamic handling package 2.0 incl. ADS+) and with CODE 489 (AIRMATIC)) | |
| Video and radar sensor system control unit (N62/1) | (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) | - |
Body
The powertrain control unit consists of a plastic housing with three plug connections and internal measuring and control electronics.
| Wiring diagram for powertrain control unit | PE54.21-P-2141-97FBA |