GF27.19-P-1201AHM Steering Wheel Gear Shifter Component Description

GF27.19-P-1201AHM Steering wheel gear shifter component description
- TRANSMISSION 722.904/906/999
- refinement package
- as of model year 09

Component Identification:

Location
On the rear of the multifunction steering wheel (MFL), there is the steering wheel gear shifter MINUS on the left and the steering wheel gear shifter PLUS (S111/1)on the right.

Task
- Shifting into a gear from which the vehicle can be favorably accelerated or decelerated
- Direct shifting of all forward gears in manual transmission mode "M" (except code (494) USA version)

Function
The steering wheel gear shifters "MINUS" and "PLUS" are read in by the steering column tube module (N80) via a steering LIN (LIN E1). The steering column tube module places the "Downshift" or "Upshift" signals on the engine compartment CAN (CAN-C). The fully integrated transmission control (VGS) control unit (Y3/8n4) receives the signal via the ME control unit (N3/10) and triggers the gearshift operation.

Shifts, which could result in impermissibly high or low engine speeds, are not performed.