User Manual

Table Of Contents
Low Voltage Disconnect (LVD)
(option)
The Low V
oltage Disconnect (LVD) may
increase battery life and avoid depleting
the battery below the minimum charge
needed to start the engine by shutting off
non-vital battery loads.
When battery voltage drops below the LVD
setting, LVD starts a two-minute
countdown. If battery voltage remains
below the LVD setting and the engine is
not started, when the countdown ends, all
non-vital battery loads (hotel loads) will be
shut off. The LVD setting is adjusted in the
Settings sub-menu of the Digital Display.
When battery voltage drops below the LVD
setting
1. An amber LVD Popup notification
occurs, accompanied by an audible
warning. This starts the two-minute
countdown.
2. Thirty seconds before the
countdown ends, the Battery
Voltage indicator is replaced by the
amber (or red) LVD telltale
27
. The
LVD popup notification will turn red
and will be accompanied by a
continuous audible warning.
3. When the two-minute countdown
has ended, the L
VD “Hotel Loads
Disconnected” Popup appears, and
LVD shuts off all loads connected
through the LVD system.
The LVD condition will not clear until
battery voltage increases above the LVD
setting or the engine is started.
Electrical loads shut off by LVD
Cab dome lamps
Cab accessories
Spare LVD wiring for customer
added accessories
WARNING
DO NOT use the Spare Battery A and
B
circuits or other circuits that are con-
trolled by the LVD to power electronic
engine controls, ABS circuits, or safe-
ty/work related lighting. Before adding
any
device to the vehicle's electrical
system, consult your nearest author-
ized dealer or read the contents of
TMC RP136. Failure to do so may
cause equipment damage or lead to
personal injury.
NOTE
The determination of what circuits/
loads
that were connected to the LVD
was based upon the recommendation
from Technology and Maintenance
Council (TMC) of the American Truck-
ing Association. To review the recom-
mended practice, see TMC RP-136.
NOTE
All LVD circuits are color-coded blue
on
the central electrical panel cover la-
bel.
MAINTENANCE - Electrical System
27
On the 15 inch display, LVD telltale color depends on the severity of battery depletion.
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