View of vehicle from front left |
N3/43 | AMG suspension control unit |
P54.21-3532-06
Location
The AMG suspension control unit is installed on the left in the bottom of the trunk.
Tasks
The AMG suspension control unit 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 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 suspension control unit transmits the signal "Locking ratio of electronic differential lock" via the AMG CAN to the electronic differential control unit (N3/2).
Coding
The AMG suspension control unit is codable and flashable, i.e. the complete software in the control unit can be updated.
CAN network
The AMG suspension control unit is a subscriber on the following CAN network and exchanges data with other control units:
AMG CAN
Drivetrain CAN (CAN C1)
User interface CAN (CAN HMI)
Vehicle dynamics CAN (CAN H)
Input and output signals
The following input signals are evaluated by the AMG suspension control unit and the corresponding output signals issued:
Direct input/output signals
CAN input/output signals
Direct input/output signals
Input and output factors for the following components are read in or output over direct lines by the electronic differential control unit:
Input factors over a direct line | Output factors over a direct line | Supplemental information |
Circuit 30 | – | – |
Circuit 31 | – | – |
CAN input/output signals
Input and output factors for the following control units are transmitted to or received by the electronic differential control unit via the CAN:
Input factors via AMG CAN (CAN AMG) | Output factors via AMG CAN (CAN AMG) | Supplemental information |
Electronic differential control unit (N3/2) | Electronic differential control unit (N3/2) | – |
Active engine mounts control unit (N3/42) | Active engine mounts control unit (N3/42) | – |
Input factors via drivetrain CAN (CAN C1) | Output factors via drivetrain CAN (CAN C1) | Supplemental information |
Electronic Stability Program control unit (N30/4) | Electronic Stability Program control unit (N30/4) | Via the chassis FlexRay (Flex E) and powertrain control unit (N127) |
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), chassis FlexRay (Flex E) and powertrain control unit (N127) |
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) | – |
Multifunction display (A1p13) | – | Via instrument cluster (A1) |
Input factors via vehicle dynamics CAN (CAN H) | Output factors via vehicle dynamics CAN (CAN H) | Supplemental information |
Electronic Stability Program control unit (N30/4) | Electronic Stability Program control unit (N30/4) | – |
Supplemental restraint system control unit (N2/10) | – | – |