GF91.29-P-5224GM Component Description of Passenger-Side Front Seat Adjustment Control Unit With Memory

GF91.29-P-5224GM Component Description Of Passenger-side Front Seat Adjustment Control Unit With Memory
- with CODE (242) Electrically adjustable front passenger seat with memory

Component Identification:

Location
The passenger-side front seat adjustment control unit with memory is located below the seat frame of the front passenger seat.

Tasks
- Actuation of the motors for the seat adjustment as per the requests read in by the driver seat adjustment with memory switch group (S91)
- Storing of the memory adjustments for the front passenger seat
- Control of the EASY-ENTRY function with collision avoidance (model 164.8 with code (845) 3rd seat row folding down electrically)
- Moving the front passenger seat in the event of a presafe request
- Power supply from front passenger lumbar support regulator control unit (N32/24)

These are grouped as follows:
^ Reading in of sensors and signals
^ Evaluating input factors
^ Actuation of components

Reading in of sensors and signals
These input factors are read in via the following connections:
^ Direct line
^ Interior CAN (CAN B)

Direct line
- Circuit 30
- Circuit 31

The following sensors are read in via direct lines:
- Hall sensors of the seat adjustment motors
- Front passenger seat adjustment with memory switch group (S92)

Interior CAN (CAN B)
- Circuit status and battery voltage from EIS [EZS] control unit (N73)
- Status of the rear bench seat from rear SAM control unit (N10/8) (necessary for EASY-ENTRY function)
- Signals for presafe request from central gateway control unit (N93)

First, the signals for the presafe request are placed on the engine compartment CAN (CAN C) by the ESP control unit (N47-5) and read in by the central gateway control unit.

Evaluation of input factors
The read in input factors are evaluated by the front passenger seat control unit. The actuation of the motors for the seat adjustment takes place via integrated relays.

Actuation of components
- Circuit 30 and circuit 31 to the front passenger lumbar support regulator control unit

The following motors are actuated via direct lines:
- Front passenger seat longitudinal adjustment motor (M28/1)
- Front passenger rear seat height adjustment motor (M28/2)
- Front passenger front seat height adjustment motor (M28/3)
- Front passenger head restraint motor (M28/4)
- Front passenger backrest angle adjustment motor (M28/5)

Variants
There are no variants for the hardware of the front passenger seat control unit.

The country or left-hand drive vehicle/right hand drive vehicle allocation is software coded.