AMG Sports Suspension Control Unit, Component Description - GF54.21-P-1002FG
Model 213 with transmission 725.096 up to model year 2018 with code 466 (Active engine mount) with code 467 (Electronic locking differential)
View of vehicle from right rear
Location
The AMG sports suspension control unit is installed in the right footwell.
Tasks
The AMG sports suspension control unit coordinates the transmission modes.
The following transmission modes can be selected:
- "C" (Comfort)
- "S" (Sport)
- "S+" (Sport+)
- "Race" (Race) only for models 213.089/289
- "I*" (Individual)
Representation in Audio/COMAND display (A40/8)
The transmission modes, as well as the representation of the all-wheel visualization, are shown in the Audio/COMAND display.
In vehicles with code 466 (active engine mount) or/and code 467 (electronic locking differential), the AMG sports suspension control unit additionally reads in the signals from various sensors via the CAN network and uses them to calculate the specified status of the active engine mounts and the locking ratio of the electronic differential lock.
The AMG sports suspension control unit transmits the signal "Specified status of mounts" via the AMG CAN (CAN AMG) to the active engine mounts control unit (N3/42), which actuates the active engine mounts. To actuate the electronic differential lock, the AMG sports suspension control unit transmits the "locking ratio of electronic differential lock" signal via the AMG CAN to the electric differential lock control unit (N3/2).
Coding
The AMG sports suspension control unit can be coded and programmed, i.e. the complete control unit software can be updated.
CAN network
The AMG sports suspension control unit is a participant of the following CAN network and exchanges data with other control units:
- AMG CAN
- Drive train CAN (CAN C1)
- User interface CAN (CAN HMI)
Chassis FlexRay (Flex E)
The AMG sports suspension control unit is a participant of the suspension FlexRay and exchanges data with other control units.
Input and output signals
The following input signals are evaluated by the AMG sports suspension control unit and the corresponding output signals issued:
- Direct input/output signals
- CAN input/output signals
- Chassis FlexRay
Direct input/output signals
Input and output parameters for the following components are read in or output via direct lines by the electric differential lock control unit:
| Input factors over a direct line | Initial parameters over a direct line | Supplemental information |
|---|---|---|
| Circuit 30 | - | - |
| Circuit 31 | - | - |
CAN input/output signals
| Input factors via AMG CAN (CAN AMG) | Output factors via AMG CAN (CAN AMG) | Supplemental information |
|---|---|---|
| Electric differential lock control unit (N3/2) | Electric differential lock control unit (N3/2) | - |
| Active engine mounts control unit (N3/42) | Active engine mounts control unit (N3/42) | - |
| Input factors via drive train CAN (CAN C1) | Output factors via drive train CAN (CAN C1) | Supplemental information |
|---|---|---|
| ME-SFI control unit (N3/10) | - | - |
| Fully integrated transmission control unit (Y3/8n4) | - | - |
| Diagnostic connector (X11/4) | Diagnostic connector (X11/4) | Via diagnostic CAN (CAN D), electronic ignition lock control unit (N73) and user interface CAN (CAN HMI) |
| Input factors over user interface CAN (CAN HMI) | Output factors over user interface CAN (CAN HMI) | Supplemental information |
|---|---|---|
| Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | - |
| Instrument cluster (A1) | - | - |
| Input factors over chassis FlexRay (Flex E) | Output factors over chassis FlexRay (Flex E) | Supplemental information |
|---|---|---|
| All-wheel drive control unit (N45) | - | - |
| Electronic Stability Program control unit (N30/4) | Electronic Stability Program control unit (N30/4) | - |
| Wiring diagram for AMG sports suspension control unit | PE54.21-P-2147-97DBA |