Component Description For Front Passenger Seat Control Unit - GF91.29-P-5241RD
MODEL 172.4
with CODE (275) Memory package for electrically adjustable front seats
Location
The front passenger seat control unit is located at the bottom of the front passenger seat frame.
Task
- Control of seat adjustment in accordance with the requests sent over the interior CAN (CAN B)
- Storing of the memory adjustments for the seat
- Control of the collision avoidance with the bulkhead
- Moving to the PRE-SAFE® positioning function of the front passenger seat (with code (299) PRE-SAFE)
Information on the PRE-SAFE® positioning function of the front passenger seat is available in the "PRE-SAFE" function description.
The tasks are subdivided as follows:
- Reading in of sensors and signals
- Evaluating input factors
- Actuating components
Reading in of sensors and signals
These input factors are read in via the following connections:
- Direct line
- Interior CAN
Direct line
The following sensors are read in via direct lines:
- Hall sensor for seat fore/aft adjustment, front passenger seat (M28/1b1)
- Hall sensor for height adjustment, front passenger seat (M28/2b1)
- Inclination adjustment Hall sensor, front passenger seat (M28/3b1)
- Hall sensor for backrest inclination, front passenger seat (M28/5b1)
Interior CAN
The signals are read in by the front passenger seat control unit via the interior CAN.
The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).
Evaluation of input factors
The read in input factors are evaluated by the front passenger seat control unit. The seat adjustment motors are actuated via integrated relays.
Component actuation
The following motors are actuated via direct lines:
- Front passenger seat fore/aft adjustment motor (M28/1)
- Front passenger seat height adjustment motor (M28/2)
- Front passenger seat inclination adjustment motor (M28/3)
- Front passenger seat backrest inclination 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.
| Wiring diagram of front passenger-side seat control unit | PE91.29-P-2105-97TAA |