| GF27.19-P-4012-02R | ETC control unit, task | Transmission 722.6 in model 230 except code (428a) steering wheel shift buttons | |
| N15/3 EGS control unit
X11/4 Data link connector Y3/6b1 Transmission oil temperature sensor Y3/6n2 RPM sensor 2 Y3/6n3 RPM sensor 3 Y3/6s1 Starter lockout contact Y3/6y1 Modulating pressure control solenoid valve Y3/6y2 Shift pressure control solenoid valve Y3/6y3 1-2 and 4-5 shift solenoid valve Y3/6y4 3-4 shift solenoid valve Y3/6y5 2-3 shift solenoid valve Y3/6y6 Torque converter lockup PWM solenoid valve |
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| P27.19-2144-06 |
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| P27.19-2089-09 |
| A1 Instrument cluster
N3/10 ME-SFI [ME] control unit |
N15/3 ETC control unit
N15/5 Electronic selector lever module control unit |
N47 Traction systems control unit
N63/1 DTR control unit N73 DI control unit |
| The ETC control unit (N15/3) measures the current operating state of the vehicle and controls all shifting operations taking the ease of shifting and driving situation into consideration.
It receives input signals as operating data from the:  Starter lockout contact (Y3/6s1)
Transmission oil temperature sensor (Y3/6b1)
RPM sensor 2 (Y3/6n2)
Rpm sensor 3 (Y3/6n3)
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In addition there is a connection to the following via the Controller Area Network bus Class C (engine compartment) (CAN-C): Instrument cluster (A1)
ME-SFI [ME] control unit (N3/10)
Electronic selector lever module control unit (N15/5)
Traction system control unit (N47)
DTR control unit (N63/1)
EIS [EZS] control unit (N73)
The ETC control unit (N15/3) controls the solenoid valves for modulating and shift pressure and for shifting gears. The necessary pressure in relation to the torque to be transmitted, is computed from all the input signals. |
| The following information from other systems is processed in so doing.
Motor electronics control unit (N3/10): Active downshift
Limp-home mode
Cruise control operating
Speed limiter active
Engine status
Engine oil status
Specified torque
Starter running
Kick-down
Shift curve offset
Pedal value
Inertia fuel shutoff
Targeted gear
Electronic selector lever module control unit (N15/5): Selector lever position
Transmission mode switch (S16/5)
Locking solenoid energized
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Traction system control unit (N47)
Torque request
Wheel speeds
Braking torque
Gear shift in "N"
Lateral acceleration
Targeted gear
Active downshift
Shift curve offset
Cruise control OFF
Parking brake status
System status
DTR control unit (N63/1): Shift curve offset
Maintain gear position
Active downshift
Electronic ignition switch control unit (N73): Refrigerant compressor (A9) ON
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| The following information is output to other systems.
Instrument cluster (A1): Program selection at transmission mode switch (S16/5) for transmission mode display (A1p16)
Motor electronics control unit (N3/10): Request: engine torque
Limp-home
Starter release
Engine emergency stop
Transmission variant
Actual gear engaged/target gear
Transmission mode selection at transmission mode switch (S16/5)
Torque converter lockup clutch status |
Traction system control unit (N47)
Wheel torque factor
Kick-down
Transmission variant
Actual gear engaged/target gear
DTR control unit (N63/1): Kick-down
Transmission variant
Actual gear engaged/target gear
Wheel torque factor
Electronic ignition switch control unit (N73): Selector lever position |