Analog input signals of the Sequentronic control unit
a - Working power supply; s - Control power supply; B56 - Automatic transmission pressure sensor; B56/1 - Gear detection sensor; S17/3 - Left front door contact switch; B53 - Clutch travel sensor; B52 - Clutch Speed Sensor; Terminal 87 (Terminal 15) - Power supply circuit 87 from relay circuit 87, chassis (N10/1kK) to the front SAM control unit (N10/1), protected by fuse 55 (N10/1f55); Cl. 30 - Power supply circuit 30 from the front control unit SAM (N10/1), protected by fuse 61 (N10/1f61); 1 - Sequential gear selection switch
Data exchange between control units via the switched CAN data bus
Analog output signals of the Sequentronic control unit
Y90 - Clutch hydraulic release valve; Y91 - Transmission brake solenoid valve; Y92/1 - Solenoid valve for switching 1, 3, and 5; Y92/2 - Solenoid valve for switching R, 2, 4 and 6; X11/4 - DLC connector via SAM control unit (N10/1); M46 - ASG hydraulic pump via ASG control relay (N10/1kN) in SAM control unit (N/10/1), protected by fuse 58 (N10/1f58); Connection is possible via the engine compartment CAN bus (CAN C): A1 - Instrument cluster; N3/10 - ME-SFI control unit; N3/9 - CDI control unit; N47-5 - ESP/BAS control unit; N73 - EIS Control Unit [EZS]
Analog output signals
Purpose of the gearbox shift control unit (N15/6):
- Definition of working states;
- Processing of incoming CAN signals;
- Calculation of working variables;
- Activation of actuators;
- Saving and issuing diagnostic data;
- Processing of incoming analog signals.
Only the N15/6 control unit is capable of calculating the shift parameters based on the analysis of analogue signals from the information sensors for determining the selected gear, clutch speed, clutch travel, shift request and hydraulic pressure.
The 12+2-pin and 18-pin control unit connector is secured with safety clamps.
The main ASG control functions are stored in the modular ECU program code, where each task is allocated to a separate block. However, the existing interdependencies determine the coherence of the network operation.
The block circulation period is determined by the processor frequency and is approximately 10 ms.
Information transmitted by the gearshift control unit (N15/6) via the CAN bus
Control unit ME-SFI (N3/10)/CDI (N3/9):
- Emergency engine shutdown;
- Current transmission;
- Required transmission;
- Transmission emergency operation mode;
- Creeping torque;
- Switching to manual control mode;
- Instrument panel (A1):
- Current transmission;
- Transmission mode;
- Error/failure messages.
ESP/BAS control unit(N47-5):
- Transmission option;
- Current transmission;
- Required transmission.
Information received by the gearshift control unit (N15/6) from the CAN bus
Original source of information: MERCEDESMAN.ru
Instrument panel (A1):
- Opening/closing the driver's door;
- Outside air temperature.
Control unit ME-SFI (N3/10)/CDI (N3/9):
- Pedal position;
- Emergency mode;
- Tempostat functioning;
- Idle speed;
- Activating the speed limiter;
- Activating the engine speed limiter;
- Inertial fuel cutoff;
- Engine torque;
- Oil temperature.
Front control unit SAM (N10/1):
- Wake-up function;
ESP/BAS control unit(N47-5):
- Wheel speed;
- Brake Light Switch Sensor;
- Parking brake;
- Signal for the ESP control unit.
EIS Control Unit (N73):
- Condition of contact terminals.