BMW 7 Series: System Overview

System Circuit Diagram, Multifunction Seat (comfort seat)

Fig. 93: Multifunction Seat System Circuit Diagram

COMPONENTS DESCRIPTION CHART

1. Switch block, driver's door
2. Button block in the armrest, driver's side
3. Motors, mirror adjustment, driver's side
4. Footwell module (FRM)
5. Central gateway module (ZGM)
6. Driver's seat module (SMFA)
7. Integrated automatic heating/air conditioning (IHKA)
8. Junction box electronics (JB)
9. Motors, mirror adjustment, passenger's side
10. Fuses in the front distribution box
11. Motor, longitudinal seat adjustment
12. Motor, seat-inclination adjustment
13. Motor, seat-height adjustment
14. Motor, backrest-inclination adjustment
15. Motor, seat-depth adjustment
16. Motor, upper backrest adjustment (LKV)
17. Motor, head-restraint height adjustment
18. Motor, backrest-width adjustment
19. Pump, lumbar support/active seat
20. Pressure distributor, active seat
21. Fan, active seat ventilation, seat surface
22. Fan, active seat ventilation, backrest surface
23. (1) Lumbar support pump
24. Lumbar support, solenoid valves
25. Seat-heating pad, seat surface
26. Seat-heating pad, backrest surface
27. Seat function buttons, driver's seat

K-CAN2 - Body CAN2
K-CAN - Body CAN
LIN-Bus - Local interconnect network bus
KI. 30B - Terminal 30 basic operation

(1) Pump in a vehicle equipped with lumbar support. In a vehicle equipped with active seats, a different pump is used. This pump supplies the active seat and lumbar support with air.

K-CAN signals at the seat module

K-CAN SIGNALS CHART

READ NEXT: