GF54.21-P-6050RI Steering Column Module, Component Description

GF54.21-P-6050RI Steering Column Module, Component Description

Component Identification:

Location
The steering column module is located on the steering column.

Task
The steering column tube module is connected to the engine compartment CAN and interior CAN.
Communication between the multifunction steering wheel and the steering column tube module takes place via the Local Interconnect Network (LIN).

The steering column tube module has the following tasks:
^ Reading in of sensors, switches, buttons and signals
^ Actuation of components

Reading in of sensors, switches, buttons and signals
The input factors are read in with the following connections:
^ Direct line
^ LIN

Direct line
The following signals are read in directly:
- Circuit 30
- Circuit 31
- Steering wheel gearshift (circuit 31)
- Steering wheel gearshift (signal)
- Driver airbag stage 1 (circuit 15)
- Driver airbag stage 2 (circuit 15)
- Driver airbag stage 1 and 2 (circuit 31)

The following sensors and switches are read in directly:
- Steering angle sensor (N49)
- Combination switch (S4)
- Left and right turn signal switch (S4s1)
- Headlamp flasher/high beams switch (S4s2)
- Low beams switch (S4s3)
- Windshield washer system switch (S4s4)
- Wipe switch (S4s5)

- CC [TPM] push button switch (S40) (with code (494) USA version)
- Resume from memory (S40s1)
- Decelerate and set (S40s2)
- Accelerate and set (S40s3)
- Switch off (S40s4)
- Control contact (S40s5)

- CC [TPM] push button (S40/4) (without code (494) USA version)
- Resume from memory (S40/4s1)
- Decelerate and set (S40/4s2)
- Accelerate and set (S40/4s3)
- Switch off (S40/4s4)
- Control contact (S40/4s5)
- Variable speed (S40/4s6)

- Steering column adjustment up/down, in/out switch (S59/1s1)
- VCS switch (S93/2) (with code (813) voice control system (VCS))

LIN
The following switches and buttons are read in via LIN:
- Left multifunction steering wheel button group (S110)
- Scroll forward/back button (S110s1)
- System selection button (S110s3)
- Fanfare horn system button (S110s5)

- Steering wheel gear shifter MINUS (S110/1) (with code (428) Steering wheel shift paddles)
- Right multifunction steering wheel button group (S111)
- Button + and -, adjustment of specific functions and volume control (S111s1)
- Accept/terminate phone call button (S111s3)
- Fanfare horn system button (S111s5)

- Steering wheel gear shifter PLUS (S111/1) (with code (428) Steering wheel shift paddles)

Actuation of components
Components are actuated with the following lines:
^ Direct line
^ Interior CAN
^ Engine compartment CAN

Direct line
The following components are actuated:
- Switch and controls illumination (circuit 58d) of components connected
- Yellow LED, variable speed limiter (S40/4v1) (without code (494) USA version)

Signal forwarding:
The restraint systems control unit (N2/7) forwards signals directly through to the fanfare horns and airbag clock spring contact (A45) via the steering column tube module for:
- Driver airbag squib 1 (R12/13)
- Driver airbag squib 2 (R12/14)

Interior CAN
The signals for the following control units are transmitted via interior CAN:
- Instrument cluster (A1)
- Rear SAM control unit (N10/8)
- Driver-side SAM control unit (N10/10)
- Right SAM control unit (N10/11)
- Left front seat adjustment control unit with memory (N32/1)
- Right front seat adjustment control unit with memory (N32/2)
- Left door control unit (N69/1)
- Right door control unit (N69/2)
- Overhead control panel control unit (N70)

Engine compartment CAN
The signals for the following control units are transmitted via engine compartment CAN:
- ME-SFI [ME] control unit (N3/10)
- ETC [EGS] control unit (N15/3) (with transmission 722.6)
- ESP, SPS [PML] and BAS control unit (N47-5)
- ABC control unit (N51/2) (with code (487) Active Body Control (ABC)
- Central gateway control unit (N93)
- Fully integrated transmission control unit (VGS) (Y3/8n4) (with transmission 722.9)