GF91.29-P-5221TX Left Front Seat Adjustment With Memory Control Unit, Component Description

GF91.29-P-5221TX Left Front Seat Adjustment With Memory Control Unit, Component Description
- with CODE (275) Memory package (driver seat, steering column, mirrors)
- with CODE (433) Left dynamic seat including multicontour seat

Component Identification:

Task (described on driver seat)
The driver-side front seat adjustment control unit with memory is responsible for:
^ the 5 seat adjusting functions.
^ the 2 steering column adjusting functions.
^ the driver-side easy entry feature through automatic seat and steering column adjustment to a position specified by the driver.
^ recording and storing of actual position.
^ moving to positions stored by adjustment functions.
^ moving to "Presafe" fixed position as active accident protection.

Design (described on driver seat)
Discrete inputs
^ terminal 15R
^ Circuit 30
^ Terminal 31
^ Hall sensor of seat adjustment motors for driver seat/steering column

Discrete outputs
^ Voltage supply 12 V (+ and -) for all seat adjustment motors
^ Voltage supply 12 V (+ and -) for all steering column adjustment motors
^ Circuit 30 left front dynamic seat control unit (N32/19)
^ Circuit 31 left front dynamic seat control unit

Function (described on driver seat)
The driver front seat adjustment control unit with memory has the following functions:

Switching consumers via relays
^ Steering column adjustment motor group (M20)
^ Fore/aft adjustment motor (M20m1)
^ Height adjustment up/down motor (M20m2)
^ Driver seat adjustment motor group with memory (M27)
^ forward/back motor (M27m1)
^ rear raise/lower motor (M27m2)
^ front up/down motor (M27)
^ head restraint raise/lower motor (M27m4)
^ backrest forward/back motor (M27m5)
^ Seat cushion fore/aft motor (M27m6)

Reading in sensors
^ Hall sensors for steering column in or out as well as up or down
^ Hall sensors for height in front or height in rear of driver seat
^ Hall sensors for longitudinal adjustment or backrest adjustment of driver seat
^ Hall sensor for head restraint of driver seat

CAN signals
The driver front seat adjustment control unit with memory is a participant of the CAN interior.