GF27.60-P-5165AHC Fully Integrated Transmission Control Unit, Component Description

GF27.60-P-5165AHC Fully integrated transmission control unit, component description
- Transmission 722.902/904/906/908

Component Identification:

Location
The control unit for the fully integrated transmission control is integrated into the control unit for the fully integrated transmission control and located in the automatic transmission.

Task
With its own independent diagnosis system the fully integrated transmission control unit (VGS) determines the current operating condition of the vehicle and controls all the 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 for control unit programming is stored on the Star Diagnosis Diagnosis Assistance System (DAS) update DVD.

Controller Area Network (data bus/CAN bus) (CAN)
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
- Tml. 31
- Circuit 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
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 module control unit (N80)
- Downshift steering wheel gearshift button signal (S110/1)
- Upshift steering wheel gearshift button signal (S111/1)
- Electronic Stability Program control unit (N30/4) (except code (233) DISTRONIC PLUS) or Electronic Stability Program Premium 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 (Electronic-Stability-Program) (ESP) requirement shifting 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

CDI control unit (N3/9) (on diesel engines) or ME-SFI [ME] control unit (N3/10) (on gasoline engines)
- Requests for catalytic converter heating
- Switching request
- Engine torque
- Engine coolant temperature
- Engine speed
- Engine load
- kick down
- 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) (for code (550) Trailer hitch)
- Trailer recognition signal

Front SAM control unit with fuse and relay module (N10/1)
- Diagnosis request

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)

Electronic Stability Program control unit (except code (233) DISTRONIC PLUS) or Electronic Stability Program Premium 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 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 transmission control