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Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transmission - 172 Chassis - 1 Of 2 >> Basic Knowledge >> (Component Description For Electronic Selector Lever Module Control Unit - GF27.60-P-5163AHN)

(Component Description For Electronic Selector Lever Module Control Unit - GF27.60-P-5163AHN)

TRANSMISSION 722.9 in MODEL 172 

IMPORTANT The transmission mode "M" is only available with code 950 (Sport package). Vehicles without Sport package do not have transmission mode "M". On these vehicles, the transmission mode "M" is replaced by the "Short-term M mode".

Location 

The electronic selector lever module control unit is located under the center console between the two front seats.

View of center console with code 950 (Sport package) 

G13845568Courtesy of MERCEDES-BENZ USA

Task 

General 

The electronic selector lever module control unit records the positions of the selector lever (non-contact) using inductive sensors.

The selector lever positions and touch shifts carried out are detected in a non-contact manner by means of optoelectronic switches. A photoelectric barrier is closed or interrupted each time the position of the selector lever is changed.

Basic functions 

Shift lock function 

Flash programming 

The electronic selector lever module control unit is fishable, i.e., the control unit's complete software can be exchanged (replaced). The software required to program the control units is stored on the Xentry diagnostics update DVD.

CAN data bus 

The electronic selector lever module 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 selector lever module control unit and the corresponding output signals issued:

Direct input signals 

Direct output signals 

CAN input signals 

Instrument cluster (A1) 

Electronic Stability Program control unit (N30/4) 

Electronic ignition lock control unit (N73) 

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

Steering column tube module control unit (N80) 

CAN output signals 

Instrument cluster (A1) 

CDI control unit (N3/9) or ME-SFI [ME] control unit (N3/10) 

Electronic ignition lock control unit (N73) 

Fully integrated transmission control unit (Y3/8n4) 

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

Designation Unit Value Tolerance range Remarks
Electronic selector lever module control unit (N15/5)         
Voltage supply V 12    
Voltage limit: Minimum Maximum V
V
6.5
16.0
   
Power consumption: No-load current operation, additional operation mA
mA
A
50
450
1.2
   
Reverse polarity protection       Yes
Additional specific parameters       No
Special features       No
Flash capability/coding capability       Yes/yes
Short-circuit protection       Yes
Automatic transmission, transmission mode button (S16/12)         
Type       Push-button switch
High level V >4.2    
Low level V <1.8    
Resistor n 0   Switch operated
Locking solenoid for selector lever positions R and P (Y66/2)         
Type       Solenoid
Supply voltage V 12   From electronic selector lever module control unit
  Wiring diagram for electronic selector lever module control unit   PE27.19-P-2102-97TAA
  Wiring diagram for fully integrated transmission control unit   PE27.19-P-2103-97TAA