GF27.60-P-2000PMB Function of Gear Shift

GF27.60-P-2000PMB Function of Gear Shift
- TRANSMISSION 722.6 in MODELS 203.076 /276

On the automatic transmission 722.6 the electrohydraulic control unit converts the electrical signals coming from the electronic transmission control (ETC) into hydraulic signals

Faults occurring in the ETC control unit (N15/3) are handled by the limp-home system. This is designed to allow the driver to reach a service outlet even under extreme conditions.

Selector lever position "P", "R", "N" and "D" are passed on mechanically to the range selector lever at the transmission by means of a shift rod in parallel to conveying via the Controller Area Network bus class C (engine compartment) (CAN-C).

Program selection "C/S"

Via touching or holding the selector lever towards "+" or "-" the shift range is preselected and displayed in the instrument cluster (A1) until an upshift of the transmission is possible.

Program selection "M"

Program selection "M" is only possible in selector lever position "D". In the process the 5 forward gears of the automatic transmission (AG) 722.6 can be engaged directly, either via the steering wheel gear shifter MINUS (S110/1), the steering wheel gear shifter PLUS (S111/1) or the selector lever.

The shifted gear is displayed in the instrument cluster (A1). The transmission automatically changes into the sport program "S" when the selector lever is shifted out of selector lever position "D".

Shift processes at unacceptably high or low engine speed are not carried out.

In addition a mandatory downshift occurs at too low an engine speed or a mandatory upshift occurs at too high an engine speed.

When the vehicle is stationary the transmission automatically shifts into 1st gear. It is possible to start off both in 1st or 2nd gear.