Component description of driver-side front seat adjustment control unit with memory

P46.15-2192-01

N32/1 Driver front seat adjustment control unit with memory

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

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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

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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.