MKIII nav system

Table of Contents
Mk-3 NAVIGATION SYSTEM
Subject
Page
Purpose of the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
System Components
Navigation Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
GPS Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Gyro Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GPS Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Display Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Information/Body Bus Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Video/Audio Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Speed Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Reverse Gear input.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Principle of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Workshop Hints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Review Questions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Initial Print Date:10/03/00
Revision Date:10/24/00
Mk-3 NAVIGATION SYSTEM
Models: E38, E39, E46, E52, E53
Production Date: E46 from 6/00, all others from 9/00
Objectives
After completing this module you should be able to:
•
Recognize the changes to Mk-3 from the previous Mk-2 navigation system.
•
Identify the components used in the system.
•
Review the operating fundamentals of GPS navigation.
•
Describe how to properly code and program the Mk-3 computer.
2
Mk-3 Navigation
Purpose of the System
The Mk-3 navigation system is a factory installed navigation system that replaces the
previous Mk-2 version. The purpose of the system remains the same as previous
navigation systems: To provide the driver with navigation instructions to an entered
destination based on the vehicles current position and the roads available selected from
a digitized road map.
The principle differences of the Mk-3 system over the previous Mk-2 are:
•
GPS receiver is integrated into the MK-3 computer.
•
Optimized memory and faster processor resulting in faster start-up and operation.
•
New split screen and magnifying feature when equipped with wide screen monitor.
(software feature)
•
Same navigation computer used for color board monitor or monochrome MIR display
units.
3
Mk-3 navigation
System Components
Mk-3 Navigation Computer
The Mk-3 navigation computer is located in
the left side of the vehicles trunk or cargo area.
(In the case of the Z8 it is installed in the storage box behind the passenger seat.)
The navigation computer housing contains:
•
•
•
•
•
•
•
Map CD drive
Hardware for navigation function
GPS receiver
Gyro sensor
Output for audio interface
Output for visual display
Cooling fan for unit
There are two different hardware versions available dependent on the angle of installation
in the vehicle (horizontal or vertical). The Mk-3 is compatible with both board monitor or
MIR display units. (See workshop hints for configuration instructions)
Identification of the Mk-3 computer over the previous versions is easy due to a change in
the face plate design and the elimination of the “CD-IN” LED.
Mk-3 Navigation
Computer
POWER
GPS NAVIGATION SYSTEM
Mk-1 and Mk-2
Navigation Computer
ON
CD-IN
4
Mk-3 Navigation
BMW
NAVIGATION SYSTEM
Mk-3 computer
GPS antenna
connection
18 pin ELO
connectors:
X1313: Violet
X1312: Blue
Integrated GPS receiver and Gyro (rotation) sensor
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.
5
Mk-3 navigation
GPS Antenna
The GPS antenna is directly connected to the navigation computer via a coaxial cable.
Locations of the antenna in the vehicles are as follows:
E38:
E39 sedan:
E39 Sport Wagon:
E46 sedan/coupe:
E46 Sport Wagon:
E46 Convertible:
E52:
E53:
Under the rear parcel shelf.
Under the rear parcel shelf.
Behind the dashboard on the left side.
Under the rear parcel shelf.
Above the rear glass under the spoiler.
Behind the instrument cluster.
Left front corner behind the dashboard.
Above the rear glass under the spoiler.
Display Units
Based on the particular model, the factory installed Mk-3 system is displayed using a color
board monitor or on a smaller monochromatic screen (MIR).
E52 MIR (Multi Information Radio)
AM FM
TONE SEL
AUDIO
MENU
NAVIGATION
TELEFON
A-TEMP
MODE
1
2
3
4
5
6
E46/E53 Color Board Monitor
MODE
DOLBY B-C NR
PTY
TONE
FM
MENU
On-board computer
GPS-Navigation
Telephone
RDS
SELECT
AM
Emergency
MENU
Set
09/08/00 Friday
1
2
3
Monitor Off
7:05 PM
4
5
6
BMW MONITOR
E38/E39 Wide Screen Color Board Monitor
(phased in for E53 1/01, E46 9/01)
INFO
1
4
2
5
3
6
FM
AM
MODE
MENU
On-board computer
GPS-Navigation
DSP
Aux. Ventilation
Set
11.13.2000 Thursday
6
Mk-3 Navigation
TONE SELECT
Code
Emergency
Monitor off
MENU
10:17
CHECK
ENGINE
Navigation System Interface
60
K-BUS
40
½
80
20
0
220
40
3
100
120 140
100
160
180
80
200
60
2
120
5
140
0
7
km/h
MPH
40
ELECTRONIC
!
CHECK
ENGINE
OIL SERVICE
INSPECTION
123456
miles
122 4
DIAGNOSIS BUS
6
1
240
20
4
1/min
x 1000
20 15
+72 0F
20 DIGIT READOUT
10
0
PRND SM
54321
P
!
ABS
Telephone
PSE Box
StarTAC
M
W
B
SRS
AIRBAG
BMW
I-BUS
MFL-CM
LCM III
AMPLIFIER
AUDIO SIGNALS
FOR AMPLIFICATION
INFO
BM53
4
2
5
3
6
FM
AM
TONE SELECT
MODE
MENU
13.07.2000 Thursday
TAPE PLAYER
AUDIO SIGNALS
CD
PLAYER
AUDIO
SIGNALS
GPS
ANTENNA
1
10:17
RED SIGNAL
GREEN SIGNAL
NAVIGATION
AUDIO
SIGNALS
BLUE SIGNAL
POWER
GPS NAVIGATION SYSTEM
REVERSE SIGNAL FROM
LCM
H
SC
BO
DSC
(processed
left front wheel
speed signal)
Example of E38/E39 with Mk-3 navigation
7
Mk-3 navigation
Information/body bus Interface
The navigation computer is integrated into the vehicle bus system as it’s main communication 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.
GPS ANTENNA
VIDEO
GYRO
RGB
GPS
POWER
INFO
1
4
2
5
3
6
FM
AM
MENU
On-board computer
DSP
GPS-Navigation
Aux. Ventilation
Telephone
Emergency
TONE SELECT
Code
MODE
Set
MENU
Monitor off
10:17
11.13.2000 Thursday
GPS NAVIGATION SYSTEM
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.
AUDIO SIGNALS
AM FM
TONE SEL
AUDIO
MENU
NAVIGATION
TELEFON
A-TEMP
MODE
POWER
GPS NAVIGATION SYSTEM
Mk 3 NAV.
8
Mk-3 Navigation
NAV BUS
1
2
3
4
5
6
E52 MIR
Speed Signals
A speed signal is provided to the navigation computer for detection of distance traveled and
vehicle speed to calculate the vehicles position on the digital map. The input is a processed
signal provided by the vehicles DSC control unit.
•
E46: The speed signal used is from the left rear wheel.
•
E38/E39/E52/E53: The speed signal used is from the left front wheel.
Reverse Gear Input
The reverse gear input is used by the navigation computer to distinguish between the
vehicle backing up or turning around.
•
E38/E39/E52/E53: The reverse input is a high signal produced by the LCM III.
Mk-3 NAV
LCM
Reverse
lights
• E46: The reverse input is a high signal supplied by a splice from the back-up lights.
Automatic Transmission
version shown
KL15
KL30
Reversing
Light Relay
K6325
Mk-3 NAV
Reverse
lights
GS 20
9
Mk-3 navigation
Principle of Operation
The Global Positioning System is a satellite based system developed by the US Department
of Defense that provides both military and civilian users accurate information about
location.
The GPS system uses 24 satellites in six
orbits 12,550 miles above the Earth moving at 1.7mi per second. Usually 7 to 10
satellites are in view over any one point on
the earth.
The GPS satellites are basically extremely
accurate clocks that broadcast a coded
signal representing time. The GPS receiver
determines it’s distance from the satellite
by measuring the time it takes between
satellite transmission of the signal and
reception to the receiver. The receiver
does this with at least 2 other satellites and
uses the information to determine the vehicles latitude, longitude, and altitude. The
accuracy of the system for civilian use is
within 100m (300ft).
The vehicle must have an unobstructed view of the sky to receive the maximum amount of
satellite signals. Trees, large buildings and excessive cloud cover can block the reception
of the satellites’ transmissions.
10
Mk-3 Navigation
The GPS antenna passes the signal to the GPS receiver incorporated in the navigation
computer. A CD with map data is loaded in the CD drive of the navigation computer. The
navigation computer combines the vehicle position calculated by the GPS with this map
data.
The current position of the vehicle can be shown on the on-board monitor by selecting
“Emergency” from the main menu.
The driver can enter a destination. The navigation computer calculates a route from the
current location to this destination based on selectable criteria (main use of highways,
shortest distance, etc.). The calculated route is shown in the route display.
The navigation computer generates the RGB color video signal for all on-board monitor
displays. These three signals are sent over separate shielded wires to the on-board monitor.
In the case of the E52 MIR (also referred as radio navigation) which does not have a color
display, the visual display data is sent via one wire called the navigation bus. On both systems, color and monochrome display, the audio output from the navigation computer for
voice directions is sent over two separate wires.
The driver has the choice of displays that utilize a color map with an icon of the vehicle
being traced on the map or the use of arrow indicators and distance data shown on the
on-board monitor display. Vehicles equipped with the wide screen board monitor have a
split screen option that includes both display methods. The MIR only makes use of the
arrows and distance display. With the assistance of voice prompts, the navigation
computer indicates how and where to get into the correct lane or turn off.
The navigation computer calculates the distance traveled from the wheel speed signal
delivered by the DSC control unit.
The gyro incorporated into the navigation computer housing informs the navigation computer when the vehicle is turning. An alternative route is re-calculated automatically if the
driver does not follow the original route instructions.
Once the driver has reached their destination, the navigation computer is ready for
another destination input.
Refer to the on-board monitor owners manual for instructions on using the navigation system
software.
11
Mk-3 navigation
Workshop Hints
Replacing the Mk-3 navigation computer
When replacing the Mk-3 navigation computer be aware that there are two hardware
variants depending on the installation position (vertical or horizontal).
The ignition should be in position 0 during removal and replacement of the computer. After
installing, close all doors, hood and trunk. A bus line reset will be carried out within two
minutes. Resetting allows the gyro to perform a calibration run. Do not move the car
during this reset period.
The coding sequence for the Mk-3 navigation computer has been changed from the
previous Mk-2. There is now an additional step (configuration) that must be done before
the software can be loaded.
After resetting, a configuration signal is needed to allow the computer to load the correct
software for use with a board monitor or MIR. This is performed using the DIS coding program (CD 22.0 onward) and the Navigation System operating software (CD V15.0 onward).
Note: Vehicles using the wide screen BM require CD V16.1 onward.
1. From the DIS/MoDiC Coding /Programming
select “1 ZCS Coding”
Print
Change
End
Services
BMW Coding/programming: E46 SERIES
1 Recoding
2 Retrofit
3 Display coding
code and code
for printout
4 Conversion
Conversion
5 Service
measures
2. Select the appropriate series
(E46,E39,E38,E52,E53)
3. Select “4 Conversion”
4. Select “3 IKE?Kombi”
Note
5. Select “2 language”
6. At the prompt “is the CD ROM present?”
select yes , but do not install the operating
software CD ROM yet.
7. First select the main language and then an
additional language. (i.e. English-spanish)
8. Select the gender of the navigation audio
voice.
9. Select “automatic coding-yes”
Print
Change
End
Services
BMW Coding/programming: E46 SERIES
Have "BMW Navigation" CD-ROM ready.
Do not insert it in
the CD drive yet!
KOMBI
Start
automtic coding?
Yes
No
Note
12
Mk-3 Navigation
10. After coding is done the DIS/MoDiC
instructs you to follow the instructions on
the monitor for the installation of the
Navigation System CD ROM.
11. Place the navigation system software in the
navigation computer CD drive.
Important: Do not switch the ignition off during the
software loading procedure. Do not use any software for the Mk-3 earlier than CD V15.0.
12. Once loading has been completed, remove the
CD and then confirm completion by pressing
the rotary push-button on the monitor.
13. Turn off the key for 10 seconds, then turn it
back on and conduct a functional check.
14. After this step has been finished, encode the
navigation computer using the “Recoding” path
in ZCS Coding. The coding process involves
coding vehicle specific data: VIN, Model,
Telematics data etc.
INFO
1
4
2
5
3
6
FM
AM
Software Update
Programming
Application Software Version 2.0
Language 1: Amerikan
Language 2: Spanish
Progress
MODE
The software status can be confirmed from the
“Set” screen for Mk-3 systems.
•
3 = Third generation system Mk-3.
•
1 = Device variant (1=Color screen, 2= MIR
MENU
SW 3-1/20
monochrome screen).
• 20 = Software version of the graphic
component (Version 2.0).
TONE SELECT
ursday
USA
km
1/100km
C
24h
E
miles
mpg
F
12h
dd.mm
on
mm/dd
off
km/l
set
set
ME
10:17
After the navigation computer has been successfully programmed and coded the vehicle
should be left in an area with a clear view of the sky with the key in KL R for at least 15 minutes to complete the calibration process.
13
Mk-3 navigation
Service Mode
Just as Mk-2, Mk-3 provides an on-screen service mode for diagnosis. The service mode
provides five different test screens:
•
•
•
•
•
On-board monitor
Navigation/Graphic element
GPS
Sensor Check
Telematics
To
•
•
•
•
•
enter the Navigation Service Mode:
Turn the ignition key to position 1 (KL R).
From the Menu screen select “SET”.
Once in the Set screen, press and hold the “MENU” button for 8 seconds.
The Service Mode menu will appear on the display.
Select from the Service Mode menu for navigation specific tests.
INFO
INFO
1
4
2
5
3
6
FM
AM
SET
Language
Distance
Consumpt.
Temp.
Clock
MODE
SW 3-1/20
USA
km
1/100km
C
24h
dd.mm
Date
on
Audio+OBC
11.13.2000 Thursday
E
miles
mpg
F
12h
km/l
TONE SELECT
set
mm/dd
off
set
MENU
10:17
1
4
2
5
3
6
FM
AM
MODE
SERVICE MODE
On-board monitor
NAVIGATION/GRAPHIC ELEMENT
TONE SELECT
Video Module
GPS
Sensor check
Telematics
MENU
10:17
11.13.2000 Thursday
Press and hold for 8 seconds after entering
the “Set” mode
Service Mode main menu display
Diagnosis
Diagnosis is carried out using Test Modules in the Diagnosis Program as well as on-screen
in the Service mode.The Sensor Check display is intended to be used while test driving the
vehicle. The following pages contain charts with explanations of the Service Mode display.
SENSOR CHECK
return
11.13.2000 Thursday
14
Mk-3 Navigation
10:17
DIS
BMW
BMW DIS
0
00
Satellite search
02485
Forward
BMW DIS
Wheel sensor:
GPS satellites:
GPS status:
Gyro:
Direction:
STATUS DISPLAY
Wheel Sensors:
WHAT SHOULD BE DISPLAYED
As the vehicle is driven, the
number should increase with an
increase in vehicle speed.
GPS Satellites:
With unobstructed upward view
of sky the display should be > 3
GPS Status:
Gyro:
“See Legend below”
Direction icon moves with vehicle
turning movement.
WHAT TO DO IF NOT OK
Check fault codes in DSC
system. If necessary carry
out wheel speed sensor
test.
Check for interference of
signals to GPS antenna,
Check integrity of circuit
from GPS antenna to nav
computer.
Replace Navigation
computer.
Milli voltage display value should
be approx 2500 mV (+/- 400mV)
when the vehicle is stationary or
driven straight ahead.
Direction:
When the vehicle is turning, the
signal voltage should increase on
right hand turns and decrease on
left hand turns.
Reverse is displayed when range
selector is in reverse. Forward in
any other range.
GPS Status Text Display
1. “GPS fault”
2. “Reception Interference”
3. “No Almanac”
4. “Satellite search”
5. “Satellite contact”
6. “Position known”
Check back up light
signal input.
Description
Problem with GPS system. Swap nav computer and or
antenna from know good vehicle after checking GPS
status display information
Problem with GPS system. Same as above.
No Data yet stored from satellites. The GPS almanac is a
memory account of received satellite signals. If the vehicle
battery has been disconnected or after replacing a nav
computer it has an empty memory and requires satellite
signals to become functional. After the nav computer
receives battery voltage and ground, it must be left outside
with an unobstructed sky above with the ignition switched
to KL R for approximatly 15 minutes.
GPS is currently searching for satellite signals.
At least one satellite is found
Vehicle’s Latitude and Longitude known. Navigation is
possible.
15
Mk-3 navigation
Menu
GPS/Status
Display
G-speed
Heading
Rec status
Pos-src
PDOP
HDOP
VDOP
Explanation
Relative speed over the ground
Direction of travel
Search/track/position receiver status
Number of satellites available for analysis
Accuracy of the calculated location
<8=sufficient determinations of location
<4=very good determinations of location
GPS/Tracking
info
CH
PRN
S/N
Visible Sat
Channel
Satellite detection
Better reception as the value increases
Number of visible satellites, receivable
Signals, depending on time of
day/configuration
Satellite database, loaded automatically after
15 minutes
VIN (Automatically assigned during coding)
Color code or text
Telephone network/contract number
Customer specific info
On/off status
Telematics services on/off status
Logging off telematics services
Almanac
Telematics
PDOP
HDOP
VDOP
S/N
Gyro
Dir
16
Mk-3 Navigation
VIN
Color
GSM
BMW info
Emergency call out
Initialization
Logging off
Position Dilution of Precision
Horizontal Dilution of Precision
Vertical Dilution of Precision
Signal/noise relationship
Piezo gyro sensor (in navigation computer)
Direction of travel
Review Questions
1. List the most signoficant changes made to the Mk-3 navigation computer over the
previous Mk-2.
2. How can the signal provided by the gyro sensor to the navigation computer be
checked?
3. Describe how the display signals are transmitted from the navigation computer to the
MIR and board monitor.
4. What step is necessary before loading the navigation computer operating software CD
on a newly replaced navigation computer? Where can the software status be confirmed
after it has been loaded?
5. How is the VIN entered into the navigation computer?
17
Mk-3 navigation