Component description for fully integrated transmission control unit - GF27.60-P-5165AHS

TRANSMISSION 722.9 in MODEL 216.3 as of model year 2009 / YoM 08 

TRANSMISSION 722.9 in MODEL 216.3 (except 216.374) as of model year 2011/YoM 10 model refinement package 

TRANSMISSION 722.9 in MODEL 221.0 as of model year 2009 / YoM 08 

TRANSMISSION 722.9 in MODEL 221.0 (except 221.095) 

TRANSMISSION 722.9 in MODEL 221.0 (except 221.074) as of model year 2011/YoM 10 

TRANSMISSION 722.9 in MODEL 221.1 as of model year 2009 / YoM 08 

TRANSMISSION 722.9 in MODEL 221.1 (except 221.195) 

TRANSMISSION 722.9 in MODEL 221.1 (except 221.174) as of model year 2011/YoM 10 

Top view of electric controller unit (VGS) (Y3/8) 

Location 

The fully integrated transmission control unit (VGS) is integrated in the electric controller unit (VGS) which is located in the oil pan at the bottom of the transmission.

Task 

General 

The fully integrated transmission control (VGS) control unit determines the instantaneous operating condition of the vehicle and actuates all gear change sequences taking ease of shifting and driving situation into consideration.

Flash programming 

The transmission control system in the fully integrated transmission control unit (VGS) is flash programmable i.e. the complete software in the control unit can be replaced (installed new). The software required to program the control units is stored on the STAR DIAGNOSIS DAS Update DVD.

CAN data bus 

The fully integrated transmission control unit (VGS) is connected to the CAN network of the vehicle via the drive train CAN (CAN-C) and exchanges data with other control units.

Input and output signals 

The following input signals are evaluated by the fully integrated transmission control unit (VGS) 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 speed sensor (VGS) (Y3/8n1)
• Internal speed sensor (VGS) (Y3/8n2)
• Output speed sensor (VGS) (Y3/8n3)
• Selection range sensor (VGS) (Y3/8s1)
• Transmission oil temperature sensor (VGS) (Y3/8s2) (integrated in fully integrated transmission control unit (VGS))

Direct output signals 

• Working pressure control solenoid valve (VGS) (Y3/8y1)
• Clutch K1 control solenoid valve (VGS) (Y3/8y2)
• Clutch K2 control solenoid valve (VGS) (Y3/8y3)
• Clutch K3 control solenoid valve (VGS) (Y3/8y4)
• Brake B1 control solenoid valve (VGS) (Y3/8y5)
• Brake B2 control solenoid valve (VGS) (Y3/8y6)
• Brake B3 control solenoid valve (VGS) (Y3/8y7)
• Torque converter lockup clutch control solenoid valve (VGS) (Y3/8y8)

The BAS release switch (A7/7s1) will be replaced by the brake light switch (S9/1) in model 221 as of 2.6.09 and in model 216 as of 1.9.10. In vehicles with code (233) DISTRONIC PLUS and Code (239) Adaptive cruise control Plus Light, the BAS release switch is still used.

CAN input signals 

Intelligent servo module for DIRECT SELECT(A80) 

• Selector lever position

EIS [EZS] control unit (N73) 

• Drive authorization system enable
• "Key-P function" request
• Circuit 50 signal, influencing fault storage

ESP control unit (N47-5) 

• 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
• ESP request shift to "N", interruption of power flow
• BAS release switch/brake light switch, change of shift strategy, brake the vehicle, transmission shifts down earlier
• ESP specified torque, torque reduction or torque increase

Trailer recognition control unit (N28/1) (in model 221) 

• Trailer recognition status

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)

CDI control unit (N3/9) or ME-SFI 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

Central gateway control unit (N93) 

• 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)

ESP control unit (N47-5) 

• Wheel torque factor, overall gear ratio
• Actual gear, target gear
• Transmission variant, recognition of basic variants, difference in gear ratios

CDI control unit (N3/9) or ME-SFI 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

Central gateway control unit (N93) 

• Diagnostic data

	Wiring diagram for intelligent servo module (ISM) control unit	A80	Model 216	PE27.60-P-2101-97CAA
		A80	Model 221	PE27.60-P-2101-97SAA
	Wiring diagram for fully integrated transmission control unit	Y3/8	Model 216	PE27.19-P-2103-97CAA
		Y3/8	Model 221	PE27.19-P-2103-97SAA