Horn - BMW G01 Product Information

G01￿General￿Vehicle￿Electronics
12.￿Horn
12.1.￿System￿wiring￿diagram
Horns
Index
1
2
3
4
5
Signal￿path￿of￿horn:
• The￿horn￿button￿is￿read￿in￿by￿the￿steering￿column￿switch￿cluster￿(SZL).
• The￿SZL￿sends￿the￿information￿via￿the￿local￿interconnect￿network￿bus￿to￿the￿Body￿Domain
Controller.
• The￿Body￿Domain￿Controller￿evaluates￿the￿information￿and￿activates￿the￿relay￿for￿the￿fanfare.
48
Explanation
Horn,￿left
Horn,￿right
Relay￿in￿the￿Body￿Domain￿Controller
Body￿Domain￿Controller￿(BDC)
Steering￿column￿switch￿cluster￿(SZL)