GF07.61-P-4023MOS ME-SFI Transmission Shift Delay, Function

GF07.61-P-4023MOS ME-SFI Transmission Shift Delay, Function
- as of model year 09


Function requirements for transmission shift delay, general points
^ Circuit 87M ON (engine control ON)
^ Engine running
^ Coolant temperature at start <50 °C
^ Vehicle speed < 53 km/h

Transmission shift delay, general points
Transmission shift delay brings the firewall catalytic converter more quickly up to operating temperature after engine start.
The ME-SFI control unit (N3/10) controls the transmission shift delay according to the following sensor and signal:
- Coolant temperature sensor (B11/4)
- ESP control unit (N47-5), vehicle speed over the chassis CAN (CAN E)

Transmission shift delay function sequence
Transmission shift delay is active for a maximum of 160 s and exclusively takes place electronically.
Over the drive train CAN (CAN C), the ME-SFI control unit tells the ETC control unit (N15/3) to adjust the shift characteristics.

Partial load gear shifts (1-2-1, 2-3-2) thus take place at higher engine speeds or at higher vehicle speeds.