•
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
do not go out after the self-check completes,
use
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.
02/11/2015
f611292
1
2
10
3
2
4
5
6
7
8
9
NOTE: This instrument cluster is shown with the U.S. speedometer, which shows miles per hour (mph) more prominently
than kilometers per hour (km/h).
1.
Engine Oil Pressure Gauge
2.
Optional Telltales
3.
Driver Message Center
4.
Fuel/DEF Level Gauge
5.
Primary Air Pressure Gauge
6.
Secondary Air Pressure Gauge
7.
Speedometer (U.S. version)
8.
Tachometer
9.
Transmission Temperature Gauge
10. Coolant Temperature Gauge
Fig. 3.2, ICU3S (GHG14 and newer shown)
Instruments
3.2
