Component description for electronic transmission control control unit - GF27.60-P-5164ACW

TRANSMISSION 722.618/640/646/694/695/696/699 in MODEL 204.0 as of model year 2009 up to 2012/YoM 11 model refinement package except model 204.049 

TRANSMISSION 722.618/640/646/694/695/696/699 in MODEL 204.2 as of model year 2009 up to 2012/YoM 11 model refinement package except model 204.249 

View of footwell on passenger side 

Location 

The electronic transmission-control control unit is located on the front passenger foot well plate.

Task 

General 

The electronic transmission-control control unit determines the current operating condition of the vehicle and controls all the gear change sequences, taking into account the shift comfort and driving situation.

Flash programming 

The transmission control in the electronic transmission-control 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 DAS Update DVD.

CAN data bus 

The electronic transmission-control control unit 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 electronic transmission-control control unit 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
• Starter lock-out contact (Y3/6s1)
• Transmission oil temperature sensor (Y3/6b1)
• Rotational speed of sun gear (rpm sensor 2 (Y3/6n2))
• RPM of the planetary spider (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 gearshift solenoid valve (Y3/6y3)
• 3-4 gearshift solenoid valve (Y3/6y4)
• 2-3 gearshift solenoid valve (Y3/6y5)
• Torque converter lockup clutch control solenoid valve (Y3/6y6)

CAN input signals 

Electronic selector lever module control unit (N15/5) 

• Selector lever position
• Transmission mode selection

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

Electronic Stability Program control unit (N30/4) 

• Wheel speeds and direction of rotation, substitute values when rpm sensors 2 and 3 malfunction
• 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
• 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) 

• Steering wheel downshift gearshift button signal (S110/1) (with code (428) Steering wheel shift paddles)
• Steering wheel upshift 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) 

• 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 (N30/4) 

• 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 (N10/1) 

• Diagnostic data

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

	Wiring diagram for electronic transmission control (ETC) control unit	N15/3	PE27.19-P-2101-97FAA
	Wiring diagram for electronic selector lever module control unit	N15/5	PE27.19-P-2102-97FAA