GF91.29-P-5230SX Left Front Seat Control Unit, Component Description

GF91.29-P-5230SX Left Front Seat Control Unit, Component Description

Component Identification:

Location
The left front seat control unit is located on the seat cushion frame of the driver seat (1).

Tasks
The left front seat control unit has the following tasks:
^ Actuation of the seat adjustment
^ Actuation of seat belt comfort fit feature
^ Control of lumbar support adjustment (without code (409) Left/right front multicontour seats and without code (432) Left and right dynamic multicontour seat)
^ Control of heated seats HS [SIH] (on model 221 with code (873) Right and left front seat heaters or code (401) Front comfort seats, incl. seat heating and seat ventilation and on model 216)
^ Control of seat ventilation (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
^ Control of memory function (on model 221 with code (275) Memory package (driver seat, steering column, mirrors) and on model 216)
^ Control of easy entry/exit feature (on model 221 with code (275) Memory package (driver seat, steering column, mirrors) and on model 216)
^ Actuation of footwell illumination in rear (on model 221)

Discrete outputs
Voltage supply for the following components:
^ Left rear footwell lamp (E17/18) (on model 221)
^ Left front seat fore/aft adjustment motor (M27/1)
^ left front head restraint motor (M27/4)
^ Left front backrest angle adjustment motor (M27/5)
^ left front seat cushion fore/aft motor (M27/8)
^ left front seat cushion inclination motor (M27/9)
^ left front seat height adjustment motor (M27/10)
^ Left front seat belt comfort solenoid (K18/4)
^ Left front seat belt lock relay (K18/2) (on model 216)
^ Left front seat heated cushion (R13/1) (on model 221 with code (873) Right and left front seat heaters or code (401) Front comfort seats, incl. seat heating and seat ventilation and on model 216)
^ Left front backrest heated cushion (R13/2) (on model 221 with code (873) Right and left front seat heaters or code (401) Front comfort seats, incl. seat heating and seat ventilation and on model 216)
^ Left front seat cushion ventilation motor group (M18/9) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
^ Left front seat backrest ventilation motor group (M18/10) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)

Discrete inputs
^ Circuit 30
^ Circuit 31
^ Hall sensors of the motors (M27/1, M27/4, M27/5, M27/8, M27/9 and M27/10)
^ Driver lumbar support regulator control unit (N32/23) (without code (409) Left/right front multicontour seats and without code (432) Left and right dynamic multicontour seat)
^ Vehicle-sensitive seatbelt lock sensor (A60) (on model 216)
^ Left front seat backrest angle microswitch (S91/1) (on model 216)

The left front seat control unit serves as a contact point for:
^ Left front seat ventilation blower regulator (N29/5) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
^ Driver lumbar support regulator control unit (N32/23) (without code (409) Left/right front multicontour seats and without code (432) Left and right dynamic multicontour seat)
^ Left front multicontour backrest control unit (N32/15) (with code (432) Left and right dynamic multicontour seat)

CAN signals
The left front seat control unit is an interior CAN participant.