AMG Gateway Control Unit, Component Description - GF54.21-P-1001RR
Model 190 With Transmission 700.4
Shown On Model 190.377
Location
The AMG gateway control unit is located on the driver side, under the instrument panel.
Tasks
The AMG gateway control unit comprises the interface of the following CAN buses:
- Interior CAN (CAN B)
- Drive train CAN (CAN C1)
- Diagnostic CAN (CAN D)
- Chassis CAN 1 (CAN E1)
- Chassis CAN 2 (CAN E2)
- User interface CAN (CAN HMI)
Drive program settings
The various settings of the drive programs are controlled by the AMG gateway control unit. The following drive programs can be selected using the drive program rotary switch (S192):
- "I *" (Individual)
- "C" (Comfort)
- "S" (Sport)
- "S+" (Sport Plus)
- "RACE" (RACE)
Rear spoiler control (except Model 190.381/379)
The AMG gateway control unit controls the rear spoiler functions.
The rear spoiler motor (M71) is actuated by the AMG gateway control unit via the rear spoiler motor relay (K115/1) until rear spoiler limit switch 1 (M71s1) reports the end position of the rear spoiler.
Rear spoiler control (Model 190.381)
The AMG gateway control unit controls the rear spoiler functions.
The actuators on the movable wing element (left and right) on the rear spoiler are actuated by the AMG gateway control unit via the rear spoiler motor relay until the rear spoiler limit switch reports the end position of the wing. The wing is actuated as follows in the various drive programs:
- Comfort: No actuation of the wing
- Sport: Dynamics-dependent actuation as of approx. 120 km/h
- Sport Plus: 100 % actuation as of approx. 120 km/h, dynamics-dependent actuation as of approx. 250 km/h
- RACE: 100 % actuation as of approx. 20 km/h, dynamics-dependent actuation as of approx. 250 km/h
Dynamic actuation: In order to maximize downthrust in certain driving situations, e.g. cornering or when braking, a dynamic range in which the wing element is actuated based on the control strategy according to the given situation is stored in the various drive programs.
Underbody spoiler control (Model 190.379)
An active underbody spoiler is installed in the front underfloor area on Model 190.379 vehicles. It is extended and retracted automatically by the AMG gateway control unit via the front spoiler underfloor drive unit actuator motor relay block (K115/2) in a speed range which is predefined according to the selected drive program. When the vehicle is stationary, the underbody spoiler can be extended using the underbody spoiler button (N72/1s64).
If the underbody spoiler has been extended while the vehicle was stationary, it is retracted automatically when "gear range D" is engaged. Production and transport mode automatically retracts the underbody spoiler and prevents any harmful extension during the production or shipping of the vehicle.
Any mechanical blockage is detected by the underbody spoiler motor unit current sensor (M16/65b1) via the power consumption of the underbody spoiler motor unit actuator motor (M16/65m1). In the event of a fault, the actuation is aborted for this ignition cycle, an appropriate message appears in the instrument cluster (A1) and a fault code is logged in the fault memory of the AMG gateway control unit.
The underbody spoiler is a modular design and consists of the following electronic components in addition to the mechanical components manufactured from fiber composite (carbon):
- Underbody spoiler motor unit (M16/65)
- Underbody spoiler motor unit current sensor
- Underbody spoiler motor unit actuator motor
- Underbody spoiler motor unit current sensor microcontroller (M16/65n1)
- Lower left underbody spoiler drive unit Hall sensor (B7/1)
- Upper left underbody spoiler drive unit Hall sensor (B7/2)
- Lower right underbody spoiler drive unit Hall sensor (B7/3)
- Upper right underbody spoiler drive unit Hall sensor (B7/4)
- Upper left underbody spoiler mechanism Hall sensor (B7/6)
- Upper right underbody spoiler mechanism Hall sensor (B7/8)
Connected buttons
The positions of buttons connected to the AMG gateway control unit are read in by the AMG gateway control unit directly or via the AMG DRIVE UNIT LIN (LIN B11), digitally processed and transmitted to suspension CAN 1 and the drive CAN.
Memory
The AMG gateway control unit has memory functions to save states (e.g. settings). In addition, the AMG gateway control unit is equipped with an internal fault memory.
Input and output signals
The following input signals are evaluated by the AMG gateway control unit and the corresponding output signals issued:
- Direct input signals
- Direct output signals
- CAN input signals
- CAN output signals
- AMG DRIVE UNIT LIN signals
Direct input signals
- Circuit 30
- Circuit 31
- Status of AMG ESP Sport Off button (S193/1)
- Status of rear spoiler 1limit switch (except Model 190.379)
- KEYLESS-GO start/stop button (S2/3)
- "M" transmission mode button status (S16/15)
Direct output signals
- Actuation of rear spoiler motor relay (except Model 190.379)
- Actuation of front spoiler underfloor drive unit actuator motor relay block (on Model 190.379)
- Actuation of KEYLESS-GO start/stop button LED
- Actuation of LED on "M" transmission mode button
CAN input signals
- Circuit 58 dimmed, by instrument cluster
- Status of circuit 50 signal and circuit 15, from electronic ignition lock control unit (N73)
- Status of dual clutch transmission control unit (N15/13)
- Status of Electronic Stability Program control unit (N30/4)
- Circuit 61 status
- Diagnostic communication, from front SAM control unit with fuse and relay module (N10/1)
- Speed signal from Electronic Stability Program control unit
- Signal of rear spoiler button (N72/1s59) (except Model 190.379) (with code 479 (AMG RIDE CONTROL sport suspension) and code U78 (AMG Sport exhaust system))
CAN output signals
- Transmission mode selection, transmission mode, "M" transmission mode button status, AMG ESP Sport Off button status, to the instrument cluster
- Status of ESP Sport Off AMG button to the Electronic Stability Program control unit
- Transmission mode selection and transmission mode to the dual-clutch transmission control unit and to the ME-SFI control unit (N3/10)
- Diagnostic communication to front SAM control unit with fuse and relay module
- "M" transmission mode button status on dual clutch transmission control unit
AMG DRIVE UNIT LIN signals
- Drive program selection "I*", "C", "S", "S+" and "RACE" on drive program rotary switch (S192)
- Dimming of function and switch and controls illumination
| Wiring diagram for AMG gateway control unit | PE54.21-P-2146-97HBA |