A SERVICE OF

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6
Electrical 389 Family
Peterbilt Motors Company 6-7
Central Instrument Cluster
The central instrument cluster includes:
driver information display
speedometer (including odometer and trip meter)
tachometer (including engine hour meter and outside temperature display)
pre-installed standard and/or editable warning light symbols called “telltale decals” mounted on the “Icon Tray.”
The Icon Tray slides into the bottom of the cluster. The standard Icon Tray covers most warning light requirements;
editable icon lenses can be added for less common components that also require warning lights.
The Driver Information Display, located at the top of the instrument cluster, displays vehicle information and warnings
through a constant monitoring of the vehicle systems. The various functions may be accessed by navigating through
menu screens using the menu control switch (rotational knob).
FIGURE 6-4. ICU/CECU Access