GF91.29-P-5223RT Component Description of Driver-Side Front Seat Adjustment Control Unit With Memory

GF91.29-P-5223RT Component Description Of Driver-side Front Seat Adjustment Control Unit With Memory
- with CODE (275) memory package (driver seat, steering column, mirrors)

Component Identification:

Purpose (described for driver seat)
The driver front seat adjustment control unit with memory is responsible for:
^ 5-seat adjustment functions.
^ the 2-steering column adjustment functions;
^ Driver entry/exit aid through automatic seat and steering column adjustment into a position specified by the driver
^ Sensing and storing actual position (last mode); can be performed key-related (depending on memory block number).
^ Actuation of positions stored for adjustment functions

Design (described on driver seat)
Discrete inputs:
^ Circuit 15R
^ Circuit 30
^ Circuit 31
^ Hall sensors for seat adjustment motors on driver seat/steering column

Discrete outputs:
^ Power supply 12 V (+ and -) for all seat adjustment motors
^ Power supply 12 V (+ and -) for all steering column adjustment motors

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

Reading in sensors
^ Height adjustment switch, driver
^ Inclination adjustment switch
^ Fore/aft adjustment switch
^ Backrest adjustment switch
^ Head restraint adjustment switch
^ Memory switch (S91s9)
^ memory button 1, 2, 3 switch (S91s14)
^ Hall sensors for steering column forward/back as well as up/down
^ Hall sensors for driver seat height at front or back
^ Hall sensors for driver seat longitudinal adjustment or backrest adjustment
^ Hall sensors for driver seat inclination adjustment
^ Hall sensors for driver seat head restraint

Switching consumers via relays
^ Steering column in/out motor (M20/1)
^ Steering column up/down motor (M20/2)
^ Driver seat longitudinal adjustment motor (M27/1)
^ Driver rear seat height adjustment motor (M27/2)
^ Driver front seat height adjustment motor (M27/3)
^ Driver head restraint motor (M27/4)
^ Driver backrest angle adjustment motor (M27/5)

CAN signals
The driver front seat adjustment control unit with memory is a subscriber on the passenger compartment CAN bus.