Shifting Program, WINTER

Shifting program not connected to bus






Shifting program connected to bus


To make it easier to pull off on slippery road surfaces, the transmission is equipped with a winter mode. The transmission is then prevented from automatically engaging 1st and 2nd gears, and the car will start in 3rd gear.

A spring-loaded switch located in the selector lever console switches to the WINTER shifting program.

Activating the switch puts 0 V (ground) on control module pin 22.

When WINTER is selected, the WINTER indicator lamp in the main instrument unit goes on. WINTER can be selected in gear position D, whereby SPORT cannot be selected.

The following applies for Trionic 7 with bus:

TCM sends information on the current mode as bus information WINTER, unit ON/OFF. When bus information "WINTER ON" is sent, the main instrument unit turns on the WINTER indicator lamp.

All variants: Functions in various selector lever positions when WINTER shifting program is selected:

P WINTER can be selected.

R WINTER can be selected.

N WINTER can be selected.

D WINTER program in 3rd and 4th gears. SPORT cannot be selected and is disengaged when WINTER is selected. The normal shifting program is selected when Kickdown is engaged.

3 Same as for selector lever position D except that 3rd gear is locked.

2 WINTER cannot be selected.

1 WINTER cannot be selected.

WINTER will be disengaged if:

- the switch is pressed
- the ignition key is tufted to OFF.
- the fluid temperature is >140°C.
- limp-home is activated.
- 1st or 2nd gear is selected.





Wiring diagram, shifting program not connected to bus





Wiring diagram, shifting program connected to bus