GF46.15-P-2005CA Adjust/Save Steering Column, Function

GF46.15-P-2005CA Adjust/save steering column, function
- with CODE (275) Memory package (driver seat, steering column, mirrors)


Adjust/save steering column, general
The store/adjust steering column function is comprised of the following subfunctions :
^ Adjust steering column function sequence
^ Save position of steering column function sequence
^ Call up saved steering column position function sequence

Adjust steering column function sequence
Actuation of the steering column adjustment switch (S59) is read in by the steering column module control unit (N80).

The signal is sent on via the chassis CAN (CAN E) to the front SAM control unit with fuse and relay module (N10/1), which routes the signal to the interior CAN (CAN B).

The driver seat control unit (N32/1) picks up the signal and depending on the request it actuates the steering column in/out adjustment motor (M20/1) or the steering column up/down adjustment motor (M20/2). This actuation takes place as long as the signal is set or until an end position is reached.

Save position of steering column function sequence
The current position of the steering column can be saved together with the position of the driver seat and the outside mirror. Saving is done using the following switches in the left front seat adjustment switch group (S22):
- Left front memory function switch (S22s6)
- Left front memory 1 switch (S22s7) or left front memory 2 switch (S22s8) or left front memory 3 switch (S22s9)

The corresponding positions are saved in the driver seat control unit. Up to three different data records can be stored. There are two ways of saving positions:
- Press and hold memory function switch, then press the corresponding memory switch.
- Press memory function switch for t greater than 100 ms and then release, then press the corresponding memory switch within t ≥ 0.2 s to t ≤ 3 s.

Actuation of the seat adjustment switch group is read in via the left door LIN (LIN B5) by the left front door control unit (N69/1) and forwarded via the interior CAN to the driver seat control unit. This uses the Hall sensor signals from the steering column adjustment motor to store the current position of the steering column adjustment motors.

When saving the position the instrument cluster (A1) emits an acknowledgment tone.

Call up saved steering column position function sequence
To move to a stored position the corresponding memory switch has to be pressed and held until the stored end position is reached. If the switch is released, the adjustment procedure is terminated immediately.

The actuation is read in over the left door LIN by the left driver door control unit and forwarded over the interior CAN to the driver seat control unit. This then actuates the steering column adjustment motors.