Powertrain Control Unit, Basic Function - GF54.21-P-9894A
WARNING: This page is about a different car, the 2020 Mercedes-Benz SLC43 AMG, 2019 Mercedes-Benz SLC43 AMG, 2018 Mercedes-Benz SLC43 AMG, and 2017 Mercedes-Benz SLC43 AMG. However, it is still accessible from the selected car via links, so may be relevant.
Engine all (CAR)
Fig 1: Powertrain Control Unit Components Location - Engine All (CAR) (example Illustration Of Model 167)
Example illustration of model 167
Overview
This document contains information on:
- General
- Function
General
The powertrain control unit serves as an interface (gateway) between the combustion engine control unit, the ESP® control unit and the connected bus systems.
Function
The powertrain control unit primarily intervenes in the following functions:
- Engine management
- Heat management
In order to carry out these functions, the powertrain control unit primarily processes the following input factors:
- Engine management ON (circuit 87)
- Charge air cooler coolant temperature
- Fan motor status
- Accelerator pedal sensor
- Start/stop button
- With manual transmission: Clutch travel sensor
- With manual transmission: Main shifter shaft position sensor
- With automatic transmission: Central communication
- Battery management system communication
- Hybrid drive system communication
The powertrain control unit processes these input factors and controls the following actuators depending on the engine variants:
- Exhaust flap controller
- Fan motor
- Radiator trim flap actuator motor
- Transmission oil cooling coolant circulation pump
- Charge air cooler circulation pump
- Coolant pump switchover valve
| Components | |||
| Drivetrain control unit, component description | Engine all in model 223 | GF54.21-P-2141A | |
| Engine all in model 206 | GF54.21-P-2141C |