freightliner 108SD - Warning and Indicator Lights

•
electronic gauges complete a full sweep of
their dials
•
some warning and indicator lamps illuminate,
then are extinguished
•
audible alert sounds until sufficient air pressure
builds up in the primary and secondary air sys-
tems
•
DEF level indicator illuminates all segments
green, then turns them off one at a time before
turning the leftmost segment amber, then red
•
software revision level of the ICU is displayed
on the driver message center, followed by ac-
tive faults
NOTE: Air gauges do not complete a sweep of
their dials during the ignition sequence.
IMPORTANT: If any red or amber warning and
indicator lamps, or telltales, do not illuminate
during the ICU self-check, take the vehicle to an
authorized Freightliner service facility as soon
as possible. If any of the red or amber telltales
or do not go out after the self-check completes,
use
Table 4.1 to determine if the lamp illumi-
nated indicates a problem requiring service.
If the ICU receives active fault codes, it displays
them one after the other until the parking brake is
released or the ignition is turned off. Once the park-
ing brake is completely released, the ICU displays
the odometer. If there are no active faults, the ICU
displays the odometer after the self-check completes.
NOTE: If active faults are present, take the ve-
hicle to an authorized Freightliner service facility
as soon as possible.
Audible Alerts
An audible alert sounds during the ignition sequence
and whenever one of the following conditions exists:
•
Engine oil pressure falls below the minimum
preset value.
•
Coolant temperature rises above the maximum
preset value.
•
Air pressure falls below about 70 psi (483
kPa).
•
Parking brake is set with the vehicle moving
faster than two miles per hour.
•
System voltage falls below 12 volts.
•
Door is open with the headlights on and the
parking brake off.
•
Driver seat belt is not fastened with the parking
brake off (optional).
•
Outside temperature falls below 35°F (1.7°C)
(optional).
Warning and Indicator Lights
There can be up to 28 telltales installed in the ICU. If
an optional lamp is not requested, the position is
blank.
See
Table 4.1 for a list of standard and commonly
used warning and indicator lamps.
Warning and indicator lamps illuminate in red (dan-
ger), amber (caution), green (status advisory), or
blue (high-beam headlights active).
IGNITION SWITCH
PARKING BRAKE
RELEASED
IF NO FAULTS
WERE DETECTED
IF FAULT DETECTED
APU 190
123456.7
12.3 VOLTS
123456.7
12.3 VOLTS
MI
MI
01/18/2012 f040420c
PARKING BRAKE
RELEASED
TURNED TO ON
ICU PERFORMS
SELF−TEST
Fig. 4.2, Ignition Sequence
Instruments
4.2