GF27.60-P-5164ACK Electronic Transmission Control Control Unit, Component Description

GF27.60-P-5164ACK Electronic transmission control control unit, component description
- Transmission 722.695

Component Identification:

Location
The ETC control unit is located on the front passenger foot well plate.

Task
General The ETC [EGS] control unit determines the instantaneous operating condition of the vehicle and controls all gear change sequences taking into account shift comfort and the driving situation.

Flash programming
The transmission control in the ETC control unit is flashable, i.e. the complete software of the control unit can be exchanged (replaced). The software required to program the control units is stored on the STAR DIAGNOSIS DAS Update DVD.

CAN data bus
The ETC control unit is connected to the CAN system of the vehicle via the engine compartment CAN (CAN-C) and exchanges data with other control units.

Input and output signals
The following input signals are evaluated by the ETC control unit and the corresponding output signals are issued:
^ Direct input signals
^ Direct output signals
^ CAN input signals
^ CAN output signals

Direct input signals
- Tml. 31
- Circuit 87
- Starter lock-out contact (Y3/6s1)
- Transmission oil temperature sensor (Y3/6b1)
- Rotational speed of sun gear (rpm sensor 2 (Y3/6n2))
- Web rpm (rpm sensor 3 (Y3/6n3))

Direct output signals
- Modulating pressure control solenoid valve (Y3/6y1)
- Shift pressure control solenoid valve (Y3/6y2)
- 1-2 and 4-5 shift solenoid valve (Y3/6y3)
- 3-4 shift solenoid valve (Y3/6y4)
- 2-3 shift solenoid valve (Y3/6y5)
- Torque converter lockup PWM solenoid valve (Y3/6y6)

CAN input signals
Electronic selector lever module control unit (15/5)
- Selector lever position
- Transmission mode selection

FIS [EZS] control unit (N73)
- Drive authorization system release (FBS 3)
- Shift-Lock function request
- Circuit 50 signal, influencing fault storage

Central gateway control unit (N93)

ESP and BAS control unit (N47-5)
- Wheel speeds and direction of rotation, substitute values in the event of failure of rpm sensor 2 and 3
- 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
- ESP request shift to "N", interruption of power flow
- BAS release switch (A7/7s1), change of shift strategy, brake the vehicle, transmission shifts down earlier
- ESP specified torque, torque reduction or torque increase

Steering column tube module (N80)
- Signal from steering wheel gear shifter MINUS (S110/1) (with code 428 Steering wheel shift paddles)
- Signal from steering wheel gear shifter PLUS (S111/1) (with code 428 Steering wheel shift paddles)
- Diagnosis request

ME-SF1 [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"
- Specified engine idle speed (for actuation of torque converter lockup clutch)
- Status of torque converter lockup clutch
- Emergency transmission control

CAN output signals
Instrument cluster (A1)
- Selector lever position for gear indicator (A1p12)
- Program selection for transmission mode display (A1p16)
- Actuation of engine diagnosis indicator lamp (A1e58) except code 494 USA version or CHECK ENGINE engine indicator lamp (A1e26) with code 494 USA version

ESP and BAS control unit (N47-5)
- Wheel torque factor, overall gear ratio
- Actual gear, target gear
- Transmission variant, recognition of basic variants, difference in gear ratios

ME-SFI [ME] control unit (N3/10)
- 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

Central gateway control unit (N93)
- Diagnostic data