BMW E90 User Manual

13
E90 General Vehicle Electrical
Functions of Roof Function Center
The Roof Function Center (FZD) serves as:
• Controller of Sunroof Functions
• Gateway for Rain Light Sensor (Data transmitted from RLS to FZD via LIN Bus
then transmitted via K-CAN from FZD to other modules)
• Evaluator of data from Condensation sensor and calculates relative humidity
(data is transmitted via K-CAN to IHKA)
• Evaluator of data from Interior Electrochromatic Rear View Mirror (data from mirror is
converted and transmitted to FRM via K-CAN, FRM dips the outside mirrors)
• Supplies power to Universal Garage Door opener
• Activation/Controller of Vanity Mirror lighting, Map/Reading and Interior Light
• Integration point for Passenger Airbag light, Microphone, and Emergency call button
Interior
Lighting
Electro-
chromatic
Interior Rear
View Mirror
Slide/tilt
Sunroof
Emergency
Call Button
Micro-
phone
Airbag
Indicator
Lamp
tion Sensor
LIN-Bus
K-CAN
FZD
Index Explanation Index Explanation
1
Connection to Main Wiring Harness (20-pin)
3
Connection to Main Wiring Harness (4-pin)
2
Connection to Interior Rear View Mirror (20-pin)
4
Connection to Rear Interior Lighting (20-pin)

BMW E90 Specifications

General

Display Type	LCD
Display Size	6.5 inches or 8.8 inches (optional)
Navigation System	Optional
Bluetooth	Optional (with phone pairing)
USB Port	Optional (depending on model year and options)
Auxiliary Input	Standard
CD Player	Standard
DVD Player	Optional (with navigation system)
iDrive System	Yes (version dependent on model year)