Component description for fully integrated transmission control unit - GF27.60-P-5165AHC
TRANSMISSION 722.9 in MODEL 207
Location
The fully integrated transmission control unit is integrated into the fully integrated transmission control controller unit located in the automatic transmission.
View of fully integrated transmission controller unit (Y3/8) from above, shown with fully integrated transmission control 4 (VGS4-0, as of AEJ 12)
Task
With its own independent diagnosis system the fully integrated transmission control unit determines the current operating state of the vehicle and controls all gear change sequences taking into account shift comfort and the driving situation.
The transmission control in the fully integrated transmission control (VGS) control unit is flashable i.e. the complete software in the control unit can be changed (replaced). The software required to program the control units is stored on the Star Diagnosis software DVD.
Controller Area Network (data bus/CAN bus) (CAN)
The fully integrated transmission control unit is connected via drivetrain CAN (CAN C) to the vehicle's CAN network, and exchanges data with other control units.
Input and output signals
The following input signals are evaluated by the fully integrated transmission control unit and the appropriate output signals are generated:
- Direct input signals
- Direct output signals
- CAN input signals
- CAN output signals
Direct input signals
- circuit 31
- circuit 87
- Turbine wheel RPM sensor (Y3/8n1)
- Internal transmission RPM sensor (Y3/8n2)
- Output shaft RPM sensor (Y3/8n3)
- Selection range sensor (Y3/8s1)
- Transmission oil temperature sensor (Y3/8s2) (integrated into fully integrated transmission control unit)
Direct output signals
- Working pressure control solenoid valve (Y3/8y1)
- Clutch control solenoid valve K1 (Y3/8y2)
- Clutch control solenoid valve K2 (Y3/8y3)
- Clutch control solenoid valve K3 (Y3/8y4)
- Multidisk brake control solenoid valve B1 (Y3/8y5)
- Multidisk brake control solenoid valve B2 (Y3/8y6)
- Multidisk brake control solenoid valve B3 (Y3/8y7)
- Control solenoid valve for torque converter lockup clutch (Y3/8y8)
CAN input signals
- Electronic ignition lock control unit (N73)
- Enable from drive authorization system stage 3 (DAS 3)
- "Shift lock function" request
- Circuit 50 signal, influencing fault storage
- Steering column tube module control unit (N80)
- Signal for steering wheel downshift button (S110/1)
- Signal for steering wheel upshift button (S111/1)
- Electronic Stability Program control unit (N30/4) (except code (233) DISTRONIC PLUS) or Premium Electronic Stability Program control unit (N30/7) (with code (233) DISTRONIC PLUS)
- Wheel speeds and direction of rotation, substitute values in the event of failure of the output shaft RPM sensor
- Adjusted braking torque, change of shift strategy, brake the vehicle, transmission shifts down earlier
- Vehicle lateral acceleration at center of gravity, adaptation of shift strategy, detection of dynamic driving style
- Cruise control operation, special shifting strategy
- Electronic Stability Program (ESP) desired shift operation into "N", power flow interruption
- Brake lights switch (S9/1), change of shift strategy, brake vehicle, transmission shifts down earlier
- ESP specified torque, torque reduction or torque increase
- CDI control unit (N3/9) (with diesel engines) or ME-SFI [ME] control unit (N3/10) (with gasoline engines)
Requests for catalytic converter heating
Switching request
- engine torque
- engine coolant temperature
- Engine speed
- Engine load
- kickdown
- engine speed limitation active
- limp-home mode engine control
- Electronic selector lever module control unit (N15/5)
- Selector lever position
- Transmission mode selection
- Trailer recognition control unit (N28/1) (with code (550) Trailer hitch)
- Trailer recognition signal
- Diagnosis request
- Front SAM control unit with fuse and relay module (N10/1)
- Automatic transmission fluid auxiliary pump control unit (N89) (with code (B03) ECO start/stop function)
- Actual value of on/off ratio (related actual current value)
- Diagnostic data
CAN output signals
- Instrument cluster (A1)
- Selector lever position for gear display (A1p12)
- Multifunction display (A1p13)
- Program selection for transmission mode display (A1p16)
- Actuation of indicator lamp for engine diagnosis (A1e58)
- Electronic Stability Program control unit (except code (233)
DISTRONIC PLUS) or Premium Electronic Stability Program control unit (with code (233) DISTRONIC PLUS)
- Wheel torque factor, overall gear ratio
- actual gear, target gear
- Transmission variant, recognition of basic variants, difference in gear ratios
- Front SAM control unit with fuse and relay module
- Diagnostic data
- CDI control unit (with diesel engines) or ME-SFI [ME] control unit (with gasoline engines)
- drive position
- transmission mode
- actual gear, target gear
- engine torque reduction request
- starter enable in selector lever position "P", "N"
- engine idle specified speed (for actuation of the torque converter lockup clutch)
- status of torque converter lockup clutch
- emergency operation transmission control
- Automatic transmission fluid auxiliary pump control unit (N89) (with code (B03) ECO start/stop function)
- Specified value of on/off ratio (related specified current value)
| Wiring diagram for fully integrated transmission control unit | PE27.19-P-2103-97EAA |