GF27.60-P-2000SX Gear Shift, Function

GF27.60-P-2000SX Gear shift, function
- Transmission 722.9


The electrohydraulic controller unit converts electrical signals going out from the fully integrated transmission control (VGS) into hydraulic signals. Faults occurring in the fully integrated transmission control (VGS) are covered by limp-home mode. The limp-home strategy is designed so that the driver can still reach a Mercedes-Benz service operation under extreme conditions. The gear selector switch positions "P", "R", "N" and "D" are transferred by the steering column module (N80) to the chassis CAN. The ME-SFI [ME] control unit (N3/10) or the CDI control unit (N3/9) (only model 221 with engine 642 or engine 629) convey the information on the drive train CAN. The fully integrated transmission control (VGS) control unit (Y3/8n4) passes on the gear selector lever positions to the intelligent servo module for DIRECT SELECT (A80) taking into account various information.

The intelligent servo module for DIRECT SELECT changes the position of the range selector lever which is passed on mechanically to the selection range sensor (VGS) (Y3/8s1).

Transmission mode "C" or "S"
Via the following steering wheel shift buttons the shift range up to which it is possible to upshift the transmission is pre selected:
^ Steering wheel gear shifter MINUS (S110/1) and steering wheel gear shifter PLUS (S111/1) on model 216.377, model 221.077/177
^ Left steering wheel gear shifter (S110/2) and right steering wheel gear shifter (S111/2) on model 216.371, model 221 except model 221.077/177

Program selection "M" on model 216.371 and model 221 except code (494) USA version, on model 216.377, model 221.077/177
Program selection "M" is only possible in gear selector switch position "D". The 7 forward gears of the transmission 722.9 can be shifted directly in the process via the following steering wheel shift buttons:
^ Steering wheel gear shifter MINUS (S110/1) and steering wheel gear shifter PLUS (S111/1) on model 216.377, model 221.077/177
^ Left steering wheel gear shifter (S110/2) and right steering wheel gear shifter (S111/2) on model 216.371, model 221 except model 221.077/177