BMW ON-BOARD MONITOR AND NAVIGATION SYSTEMS FOR E38 E39 E46 E53 Bedienungsanleitung PDF herunterladen (Seite 15)

Mk-3 navigation

STATUS DISPLAY

WHAT SHOULD BE DISPLAYED

WHAT TO DO IF NOT OK

Wheel Sensors:

As the vehicle is driven, the

number should increase with an

increase in vehicle speed.

Check fault codes in DSC

system. If necessary carry

out wheel speed sensor

test.

GPS Satellites:

With unobstructed upward view

of sky the display should be > 3

Check for interference of

signals to GPS antenna,

Check integrity of circuit

from GPS antenna to nav

computer.

GPS Status:

See Legend below

Gyro:

Direction icon moves with vehicle

turning movement.

Milli voltage display value should

be approx 2500 mV (+/- 400mV)

when the vehicle is stationary or

driven straight ahead.

When the vehicle is turning, the

signal voltage should increase on

right hand turns and decrease on

left hand turns.

Replace Navigation

computer.

Direction:

Reverse is displayed when range

selector is in reverse. Forward in

any other range.

Check back up light

signal input.

GPS Status Text Display

Description

1. GPS fault

Problem with GPS system. Swap nav computer and or

antenna from know good vehicle after checking GPS

status display information

2. Reception Interference

Problem with GPS system. Same as above.

3. No Almanac

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.

4. Satellite search

GPS is currently searching for satellite signals.

5. Satellite contact

At least one satellite is found

6. Position known

Vehicles Latitude and Longitude known. Navigation is

possible.

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