9
Mk-3 navigation
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 l le
ef
ft
t
r
re
ea
ar
r
wheel.
E38/E39/E52/E53: The speed signal used is from the l le
ef
ft
t
f
fr
ro
on
nt
t
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.
•E46: The reverse input is a high signal supplied by a splice from the back-up lights.
Mk-3 NAV
GS 20 Reverse
lightsReversing
Light Relay
K6325 KL15KL30
LCMMk-3 NAV
Reverse
lights
Automatic Transmission
version shown
