ad blue BMW 3 SERIES 2002 E46 Mk3 Navigation System Manual

5
Mk-3 navigation
GPS (Global Positioning System) Receiver
The GPS receiver module of the previous Mk-2 system is integrated into the housing of the
Mk-3 computer, further reducing the complexity and the number of components used in
the system. The receiver is not serviceable.
The GPS receiver is responsible for receiving the satellite signals and providing the vehicle’s
position information to the navigation computer.
Information provided by the GPS receiver to the navigation computer can be displayed in
the service mode
(see workshop hints) but is not typically used in diagnosis.
Gyro (Rotation) Sensor
The navigation computer contains the electronic (piezo) Gyro sensor that detects rotation
(yaw) of the vehicle as a confirmation that the vehicle is turning. The signal provided by the
gyro is a mili-voltage that changes as the vehicle rotates. The navigation computer uses
the input to track the vehicle along the digitized map and display the exact vehicle position.
The signal is available in the sensor test page of the service mode for diagnosis. The
sensor is not a separately serviceable item and does not require calibration.
Mk-3 computer
GPS antenna
connection18 pin ELO
connectors:
X1313: Violet
X1312: Blue
Integrated GPS receiver and Gyro (rotation) sensor

7
Mk-3 navigation
Navigation System Interface
RED SIGNAL
GREEN SIGNAL
BLUE SIGNAL
LCM IIILCMIII
MFL-CM Telephone
PSE Box
Telephone
PSE
Box
I-BUS
K-BUSDIAGNOSIS BUS DIAGNOSISBUS
SRS
AIRBAGSRS
AIRBAG
BMW
BM53
NAVIGATION
AUDIO
SIGNALS
GPS
ANTENNA
CD
PLAYER
AUDIO
SIGNALSAUDIO SIGNALS
FOR AMPLIFICATION
TAPE PLAYER
AUDIO SIGNALS
AMPLIFIER
DSC
(processed
left front wheel
speed signal)
REVERSE SIGNAL FROM
LCM
POWERGPSNAVIGATION SYSTEM
13.07.2000Thursday10 : 17
INFO
1
4
25
36
FM AMMODEMENU
TONE SELECT
BOSCH
0½
CHECK
ENGINECHECK
ENGINEOIL SERVICEOILSERVICEINSPECTIONP
1/min
x 1000
km/hELECTRONICMPH
1
20204040
6060
8080100180160140 1201002001202201402400234
5
6
7
!!ABS20 DIGIT READOUT123456PRND SM
54321122 4720Fmiles
0
10
15 20 40
+
BMW
StarTAC
Example of E38/E39 with Mk-3 navigation

8
Mk-3 Navigation
Information/body bus Interface
The navigation computer is integrated into the vehicle bus system as it’s main communica-
tion link with the vehicle.
Communication occurs with the following modules:
BMBT- Control inputs
Radio- Display data
GM- Door open
IKE/Kombi- On-board computer data
Telephone PSE Box- Monitor display data, mayday function
DISplus- Coding data
PSE = Portable Support Electronics
Video/Audio Signals
Board Monitor (Top Navigation)
The RGB video signal for all display functions of the board monitor are produced by the
navigation computer graphics stage via three output signals. The Red-Green-Blue signals
are direct inputs to the board monitor. The audio signals for navigation instructions to the
radio are sent via two separate lines.
MIR (Radio Navigation)
Since a color display is not used for the MIR, the navigation information for the display is
sent via a NAV bus. The NAV bus is a single dedicated line between the Mk-3 computer
and the MIR. Audio signals for navigation instructions are sent to the radio via two
separate lines.
AM FM
MODE
TONESELMENU
123456
AUDIONAVIGATIONTELEFONA-TEMPPOWERGPSNAVIGATION SYSTEM
E52 MIR
Mk3NAV.
NAV BUS
AUDIO SIGNALS
11.13.2000Thursday10 : 17
INFO
1
4
25
253636FM AMMODEMENUMENU
TONE SELECTTONESELECT
MENUOn-board computer
Telephone
Code
SetOn-board computer
Telephone
Code
SetGPS-NavigationDSP
Aux. Ventilation
Emergency
Monitor offDSP
Aux.Ventilation
Emergency
Monitor off
RGB
POWERGPSNAVIGATION SYSTEM
VIDEO
GYRO
GPSVIDEO
GYRO
GPS
GPS ANTENNA