•
warning and indicator lamps illuminate, then
are extinguished
•
audible alert sounds for approximately four
seconds or until sufficient air pressure builds
up in the primary and secondary air systems
•
DEF level indicator illuminates all segments
green, then turns them off one at a time before
turning the leftmost segment amber and then
red
•
Freightliner logo displays on the ICU4Me driver
message center for two seconds.
•
software revision level of the ICU is displayed
on the driver message center, followed by any
active faults
IMPORTANT: If any red or amber warning and
indicator lamps do not illuminate during the ICU
self-check or do not go out after the self-check
completes, take the action outlined in
Table 4.1,
or take the vehicle to an authorized Freightliner
service facility as soon as possible.
NOTE: If active faults are present, take the ve-
hicle to an authorized Freightliner service facility
as soon as possible.
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.
When the self-check is complete on an ICU4M, the
fasten seat belt screen displays if the engine is off. If
the engine is running, the idle hours screen displays.
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.
f610865b
1
34
5
6
7
89
10
11 12
13 14
2
09/10/2009
NOTE: The ICU4 and ICU4M are nearly identical, with the exception of the driver message center (Item 7).
1. Battery Voltage Gauge
2. Lightbar
3. Engine Oil Pressure Gauge
4. Coolant Temperature Gauge
5. Engine Oil Temperature Gauge
6. Turbo Boost Air Pressure Gauge
7. Driver Message Center
8. Tachometer
9. Speedometer
10. Primary Air Pressure Gauge
11. Fuel/DEF Level Gauge
12. Secondary Air Pressure Gauge
13. Pyrometer
14. Rear Axle Temperature Gauge
Fig. 4.2, ICU4M Instrument Cluster (EPA10 shown)
Instruments
4.2
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