Component Description For Steering Column Tube Module Control Unit - GF54.21-P-6051CE

MODEL 204.0/2 as of model year 2009/YoM 08

MODEL 204.3/9

Shown on model 204.0

Fig 1: Identifying Steering Column Tube Module Control Unit - Shown On Model 204.0

Location

The steering column module control unit is located on the steering column.

Task

The steering column tube module control unit has the following tasks:

Looping through of signals

The following components are connected to the steering column tube module control unit, although they are not actuated by it:

Actuation takes place through the supplemental restraint system control unit (N2/10) over the fanfare horns and airbag clock spring contact (A45).

Reading in of sensors, pickups and signals

The input factors are read in via the following connections:

Direct line

The signals from the following components are read via a direct line:

Steering angle sensor (N49)
Combination switch (S4)
- Turn signal lamps switch (S4s1)
- Headlamp flasher and high beams switch (S4s2)
- Low beam switch (S4s3)
- Windshield washer system switch (S4s4)
- Wipe switch (S4s5)
Cruise control lever (S40/4) (with code (440) Cruise control)
- Resume from memory switch (S40/4s1)
- Decelerate and set switch (S40/4s2)
- Accelerate and set switch (S40/4s3)
- OFF switch (S40/4s4)
- Indicator switch (S40/4s5)
SPEEDTRONIC switch (S40/4s6)
(without code (494) USA version and without code (498) Japan version)
DISTRONIC control (S40/4r1)
(with code (233) DISTRONIC PLUS)
Steering column adjustment switch (S59)
Left multifunction steering wheel button group (S110)
(without code (428) Steering wheel shift paddles)
Right multifunction steering wheel button group (S111)
(without code (428) Steering wheel shift paddles)

Steering LIN

With code (428) Steering wheel shift buttons, the signals for the following components are read in over the steering LIN:

Chassis CAN

The signals are read in by the steering column tube module control unit over the chassis CAN.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Actuation of components

The following components are actuated:

Left multifunction steering wheel button group
(symbol illumination)
Right multifunction steering wheel button group
(symbol illumination)
SPEEDTRONIC LED (S40/4v1)
(without code (494) USA version and without code (498) Japan version)

Wiring diagram for steering column module control unit