GF27.60-P-5165AHL Component Description For Fully Integrated Transmission Control Unit
GF27.60-P-5165AHL Component Description For Fully Integrated Transmission Control Unit
- TRANSMISSION 722.9 (except 722.930 /931) in MODEL 212
View of fully integrated transmission controller unit (Y3/8) from above
21a Supporting body
Y3/8n4 Fully integrated transmission control unit
Location
The fully integrated transmission control unit is integrated in the fully integrated transmission control controller unit which is located in the bottom of the transmission.
Task
General
The fully integrated transmission control control unit determines the current operating condition of the vehicle and actuates all gear change sequences taking shifting comfort and the driving situation into consideration.
Flash programming
The transmission control system in the control unit for the fully integrated transmission control (VGS) 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.
CAN data bus
The control unit for the fully integrated transmission control is connected via the drive train 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 control unit for the fully integrated transmission control and the appropriate output signals are generated:
^ Direct input signals
^ Direct output signals
^ CAN input signals
^ CAN output signals
Direct input signals
- Circuit 31
- Terminal 87
- Turbine wheel rpm sensor (Y3/8n1)
- Internal transmission rpm sensor (Y3/8n2)
- Y3/8n3Output shaft rpm sensor
- Selection range sensor (Y3/8s1)
- Transmission oil temperature sensor (Y3/8s2) (integrated into control unit for fully integrated transmission control)
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)
- Torque converter lockup clutch control solenoid valve (Y3/8y8)
CAN input signals
Intelligent servo module for DIRECT SELECT (A80)
- Selector lever position
- Transmission mode selection
Electronic ignition lock control unit (N73)
- Drive authorization system (DAS) enable
- "Key-P function" request
- Circuit 50 signal, influencing fault storage
Electronic stability program control unit (N30/4) or Premium electronic stability program control unit (for code (233) DISTRONIC PLUS) (N30/7)
- 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 into "N", power flow interruption
- Stop lamp switch (S9/1), change of shift strategy, brake vehicle, transmission shifts down earlier
- ESP specified torque, torque reduction or torque increase
Steering column module control unit (N80)
- The signal from the Downshift steering wheel gearshift button (S110/1) (with code (428) steering wheel shift paddles)
- - Upshift steering wheel gearshift button signal (S111/1 ) (with code (428) Steering wheel shift paddles)
CDI control unit (N3/9) or ME-SFI [ME] control unit (N3/10)
- 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
Trailer recognition control unit (N28/1)
- Trailer recognition signal
Front SAM control unit with fuse and relay module (N10/1)
- Diagnostic CAN (CAN-D) interface
Transmission oil auxiliary pump control unitN89
- Actual value of duty cycle (related current actual value)
- Diagnostic data
CAN output signals
Instrument cluster (A1)
- Selector lever position for gear display (A1p12)
- Multifunction display (A1p13)
- Mode selection for transmission mode display (A1p16)
- Actuation of indicator lamp for engine diagnosis (A1e58)
CDI control unit (N3/9) or ME-SFI [ME] control unit (N3/10)
- 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 transmission limp-home mode
Electronic stability program control unit (N30/4) or Premium electronic stability program control unit (for code (233) DISTRONIC PLUS) (N30/7)
- Wheel torque factor, overall gear ratio
- Actual gear, target gear
- Transmission variant, recognition of basic variants, difference in gear ratios
Transmission oil auxiliary pump control unitN89
- Specified value of duty cycle (related current specification value)
