SEQ control module, purpose - GF26.19-P-4009-01P
Model 203
Purpose of easy-shift manual transmission control module (N15/6):
- Recognizes operating states
- Processes incoming CAN signals
- Outputs CAN signals
- Calculates actuating variables
- Activates the actuators
- Saves and outputs diagnostic data
- processes incoming analog signals
Only the easy-shift manual transmission control module (N15/6) is responsible for calculation of the shifting procedures obtained from the analog sensor values for the gear recognition, clutch rotation rate, clutch path, shift request and hydraulic fluid pressure value.
The control module with 12+2-pin and 18-pin connector is secured by fuses
To restrict processing loads for signal generation and transmission to a reasonable level, the transmission control system makes use of digital signals that are already available in the vehicle, and calculates some of the required variables from known signals. Examples for this are the calculation of the longitudinal and lateral acceleration or the determination of the transmission/output speed from the ESP and BAS control module (N47-5) and wheel speeds provided via the CAN bus. Special service programs process incoming signals to adapt form and quality for subsequent processing in the program environments encountered within the various control units.
The essential ASG control functions are stored within the ECU's modular software, where individual functions are processed in individual function blocks. Nevertheless the mutual interdependencies still lead to a linked operating network. The CPU rate defining the period in which each function block cycles once is approximately 10 ms.
Input signals (analog):
- Automated manual transmission pressure sensor (B56)
- Gear recognition sensor (B56/1)
- Left front door contact switch (S17/3)
- Clutch travel sensor (B53)
- Clutch rotation rate sensor (B52)
- Power supply circuit 87 (KI 87 (KI 15)) from relay circuit 87, chassis (N10/1kK) in front SAM control module with fuse and relay module (N10/1), fused via fuse 55 (N10/1f55)
- Power supply circuit 30 (KI 30) from front SAM control module with fuse and relay module (N10/1), fused via fuse 61 (N10/1f61)
- Sequential floor shift (1)
Output signals (analog):
- Clutch valve for easy-shift manual transmission (Y90)
- Brake solenoid valve for easy-shift manual transmission (Y91)
- Control solenoid valve for easy-shift manual transmission, 1st, 3rd, 5h gear shift (Y92/1)
- Control solenoid valve for easy-shift manual transmission, R, 2nd, 4th, 6th gear shift (Y92/2)
- Data link connector (X11/4) via front SAM control module with fuse and relay module (N10/1)
- ASG hydraulic pump (M46) via ASG pump control relay (N10/1kN) in front SAM control module with fuse and relay module (N10/1), fused via fuse 58 (N10/1f58)
Connection is possible via engine compartment CAN bus (CAN C):
- Instrument cluster (A1)
- ME-SFI control module (N3/10) or CDI control module (N3/9)
- ESP and BAS control module (N47-5)
- EIS [EZS] control module (N73)
The following information is transmitted by the easy-shift manual transmission control module (N15/6) via CAN bus to the:
ME-SFI control module (N3/10) or CDI control module (N3/9)
- Engine emergency stop
- Actual gear
- Target gear
- Transmission emergency running mode
- Crawl torque
- Manual switching mode
Instrument cluster (A1)
- Current gear
- Transmission mode
- Fault/warning messages
ESP and BAS control module (N47-5)
- Transmission variant
- Actual gear
- Target gear
The following information is received by the easy-shift manual transmission control module (N15/6) via CAN bus from the
Instrument cluster (A1)
- Driver's door open/closed
- Outside air temperature
ME-SFI control module (N3/10) or CDI control module (N3/9)
- Pedal value
- Limp-home
- Cruise control operating
- Idle speed
- Speed limiter active
- Engine speed limiter active
- Inertia fuel shutoff
- Engine torque
- Oil temperature
Front SAM control module with fuse and relay module (N10/1)
- Wake-up function
ESP and BAS control module (N47-5)
- Wheel speeds
- Stop lamp switch
- Parking brake
- Signal for ESP control mode
for EIS control module (N73)
- Terminal status