freightliner NEW CASCADIA 2016, Driver Manual

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Instrumentation Control Unit
The instrumentation control unit (ICU) provides the
driver with engine and vehicle information. It is com-
prised of gauges, indicator lamps (also known as tell-
tales), a driver display, and an audible warning sys-
tem. Warning and indicator lamps illuminate in red
(warning), amber (caution), green (status advisory),
or blue (high-beam headlights active). The driver dis-
play screen provides information on various vehicle
systems as well as warnings, cautions, and notifica-
tions on systems status.
The New Cascadia vehicles are equipped with an
ICUC. See
Fig. 3.1 for a typical ICUC layout.
The following headings in this chapter provide addi-
tional information and operating instructions for ICUC
components:
•
"Warnings, Indicators, and Messages"
•
"Instruments"
•
"Driver Display"
Ignition Sequence
When the ignition is turned on, the ICU runs a self-
check. Observing the ignition sequence is a good
way to ensure the ICU is functioning properly.
IMPORTANT: Do not crank the engine until the
ICU self-check is complete.
NOTE: Air gauges do not complete a sweep of
their dials during the ignition sequence.
When the ignition is turned on, the following actions
should occur:
•
speedometer and tachometer complete a full
sweep of their dials
•
warning and indicator lamps illuminate, then
are extinguished (if not active)
•
audible alert sounds for any active faults
•
Freightliner logo displays on the ICU driver dis-
play until ICU startup is complete.
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1
3 4 5
6
2
1. Speedometer
2. Coolant Temperature Gauge
3. Primary and Secondary Air Pressure Gauge
4. Fuel and DEF Level Gauge
5. Engine Oil Pressure Gauge
6. Tachometer
7. Driver Display
Fig. 3.1, ICUC Instrument Cluster
Instruments
3.1