Instrumentation Control Unit - freightliner S2 Operator's Manual

Instruments

Instrumentation Control Unit

Figure 3.1 and Fig. 3.2
ments for vehicles equipped with the S2 Chassis
ICU3 instrument cluster.
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).
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1. Engine Oil Pressure Gauge
2. Dash Message Center
3. Headlight High-Beam Indicator
4. Dash Driver Display Screen
5. Fuel Level Gauge
The ICU3 instrument cluster can accept information
from the datalink and from various sensors installed
on the vehicle, and deliver that information to elec-
tronic gauges.
There can be up to eight gauges on the driver's in-
strument panel (six electronic and two mechanical).
Only the air gauges operate mechanically.
3.1
show a typical set of instru-
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6. Diesel Exhaust Fluid (DEF) Gauge
7. Primary Air Pressure Gauge
8. Mode/Reset Switch
9. Secondary Air Pressure Gauge
Fig. 3.1, Gauge Layout (typical, U.S.), EPA10 and Newer Engines
The S2 Chassis instrument clusters have the capabil-
ity to drive independent stand-alone gauges such as
those installed on the auxiliary dash panel.
3.3 shows a typical dash.
Dash Message Center
The dash message center is the heart of the instru-
ment cluster. It has two parts, a set of 27 warning
and indicator lights similar to those found on a con-
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ventional lightbar, and a dash driver display screen.
The driver display screen is a one-line by seven-
character liquid crystal display (LCD) that normally
shows odometer readings. Below this display is a
smaller one-line by three-character LCD that shows
voltmeter readings.
The dash message center houses all of the standard
and optional warning and indicator lights. Warning
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10. Speedometer
11. Tachometer
12. Transmission Temperature Gauge
13. Coolant Temperature Gauge
Figure
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