GF27.19-P-4012-02TY ETC Control Unit, Task

GF27.19-P-4012-02TY ETC control unit, task
- TRANSMISSION 722.6

Component Identification:

The ETC control unit (N15/3) determines the instantaneous operating condition of the vehicle and controls all gearshift sequences taking into account the ease of shifting and the driving situation.

It receives input signals as operating data from the:
^ Starter lock-out contact (Y3/6s1)
^ Transmission oil temperature sensor (Y3/6b1)
^ RPM sensor 2 (Y3/6n2)
^ RPM sensor 3 (Y3/6n3)

In addition there is a connection to the following via the Controller Area Network bus Class C (engine compartment) (CAN-C):
^ Instrument cluster (A1)
^ DTR control unit (A89)
^ ME-SFI [ME] control unit (N3/10)
^ Electronic selector lever module control unit (N15/5)
^ ESP control unit (N47-5)
^ EIS [EZS] control unit (N73)
^ Steering column module (N80)
^ Central gateway control unit (N93)

The ETC control unit (N15/3) controls the solenoid valves for modulating and shift pressure and for shifting gears. The pressure required is calculated from all input signals, adjusted to the torque to be transferred.

The following information from other systems is processed in so doing.

Motor electronics control unit (N3/10):
^ Request: Starting off in 1st gear
^ Request: Active downshift
^ Request: status of torque converter lockup clutch
^ Limp-home mode
^ Cruise control operating
^ Speed limiter active
^ Engine status
^ Engine oi1status
^ Specified torque
^ Starter running
^ Idle speed
^ Shift curve offset
^ Pedal value
^ Inertia fuel shutoff
^ Targeted gear
^ Kick-down

Electronic selector lever module control unit (N15/5):
^ Selector lever position
^ Transmission mode switch (S16/5)
^ Locking solenoid energized

ESP control unit (N47-5)
^ Request: gearshift in "N"
^ Request: targeted gear
^ Request: Active downshift
^ Torque requests
^ Stop lamp switch (S9/1)
^ Wheel speeds
^ Braking torque
^ Lateral acceleration
^ Shift curve offset
^ Cruise control OFF
^ Parking brake operated
^ System status

Electronic ignition switch control unit (N73):
^ Refrigerant compressor (A9) ON
^ Circuit 50 engine start switch (circuit 50)

Steering column module (N80):
^ Steering wheel gear shifter MINUS (S110/1)
^ Steering wheel gear shifter PLUS (S111/1)

Central gateway control unit N93
^ Request: diagnosis

The following information is output to other systems.

Instrument cluster (A1):
^ Transmission mode selection at transmission mode switch (S16/5)
^ Selector lever position

DTR control unit (A89)
^ Kick-down
^ Transmission variant
^ Actual gear, target gear
^ Wheel torque factor

Motor electronics control unit (N3/10):
^ Request: engine torque
^ Limp-home
^ Starter release
^ Engine emergency stop
^ Transmission variant
^ Actual gear, target gear
^ Transmission mode selection at transmission mode switch (S16/5)
^ Torque converter lockup clutch status
^ Selector lever position
^ Kick-down

ESP control unit (N47-5)
^ Kick-down
^ Transmission variant
^ Actual gear, target gear

Electronic ignition switch control unit (N73):
^ Selector lever position

Central gateway control unit N93
^ Transmission oil temperature
^ Transmission variant
^ Selector lever position
^ Diagnosis