AMG Sports Suspension Control Unit, Component Description - GF54.21-P-1002RR

Model 190 With Transmission 700.4 

With Code 466 (Active engine mount) 

Shown On Model 190.377 

Location 

The AMG chassis control unit is mounted on the driver side behind the seat.

Task 

The AMG suspension control unit has the following tasks:

• Reading in of signals 
• Evaluation of input factors 
• Output of signals 

Reading in of signals 

The input factors are read in over the following connections:

• AMG CAN (CAN AMG) 
• Interior CAN (CAN B) 
• Drive train CAN (CAN C1) 
• Chassis CAN 1 (CAN E1) 
• Vehicle dynamics CAN (CAN H) 

AMG CAN 

The AMG suspension control unit also receives the following information via the AMG CAN:

• Signals of left active engine mount pressure sensor (Y123b1)
• Signals of right active engine mount pressure sensor (Y123/1b1)
• Signals of left active transmission mount pressure sensor (Y124b1)
• Signals of right active transmission mount pressure sensor (Y124/1b1)
• Status of left active engine mount coil (Y123l1)
• Status of right active engine mount coil (Y123/1l1)
• Status of left active transmission mount coil (Y124l1)
• Status of right active transmission mount coil (Y124/1I1)
• Driving situation
• Monitored road surface

Interior CAN 

The AMG suspension control unit also receives the following information via the interior CAN:

• Circuit 15 status
• Circuit 50 status

Drive train CAN 

The AMG suspension control unit also receives the following information via the drive CAN:

• Accelerator pedal position
• Engine running status
• Engine torque
• Specified gear
• Torque of start-off clutch
• Output speed of transmission

Chassis CAN 1 

The AMG suspension control unit also receives the following information via chassis CAN 1:

• Status of brake pedal
• ESP® status
• ESP® mode
• Brake torque
• Wheel speed
• Yaw rate
• Longitudinal acceleration
• Lateral acceleration
• Steering wheel angle and velocity
• Vehicle acceleration
• Active damping control mode

Vehicle dynamics CAN 

The AMG suspension control unit also receives the following information via the vehicle dynamics CAN:

• Yaw rate
• Longitudinal acceleration
• Lateral acceleration

Evaluation of input factors 

The input factors that have been read in are evaluated by the integrated microprocessor whereupon the relevant signals are then issued.

Output of signals 

The signals are issued over the following connections:

• AMG CAN 
• Chassis CAN 1 

AMG CAN 

The AMG suspension control unit also transmits the following information via the AMG CAN:

• Engine running status
• Circuit 15 status
• Circuit 50 status
• Active engine mount coil, request
• Active engine mount mode, request
• Active transmission mount coil, request
• Active transmission mount mode, request

Chassis CAN 1 

The AMG suspension control unit also transmits the following information via chassis CAN 1:

• Request to display messages

Wiring diagram for AMG sports suspension control unit

PE54.21-P-2147-97HBA