PREVOST H3-45 VIP Owner's Manual page 111

SITUATION
ACTIONS BY ACB
SYSTEM
SELF-DIAGNOSTIC AT START-UP
Initiate the self-diagnostic as follows:
The engine must be running since at least 15 seconds with the parking brake applied.
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Trip the CRUISE rocker switch located on the lateral control panel from OFF to ON position.
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The following sequence will begin:
1. Pop-up message "Impact Alert" will show in the DID;
2. The speedometer LEDs will flash in red;
3. FORWARD VEHICLE DETECTED telltale will flash in red;
4. The Impact Alert audible alarm will sound.
At the end of the self-diagnostic sequence, pop-up message « ACB SELF-CHECK OK » will show on the DID if
the system functions properly or « ACB SELF-CHECK NOT OK » if a fault condition is detected.
SYSTEM MALFUNCTION
In case of system malfunction, visual warnings will illuminate in the instrument cluster or the driver information
display to warn the driver that the ACB is disabled. In that situation, the Impact Alert and Distance Alert
functions are not available.
If the ACB is not available, the FORWARD VEHICLE DETECTED telltale light will illuminate in red and will
stay on and "ACB NOT AVAILABLE" pictogram will appear on the DID status line.
BRAKE OVERUSE WARNING
ACB system is using the service brakes excessively to maintain the set following
distance (for example, the use of ACB on long, steep downhill runs). Excessive
application of the service brakes can cause the brakes to overheat resulting in
increasing stopping distances.
After a brief delay, the ACB system will stop functioning and be disabled.
On the dashboard, the Forward Vehicle Detected
telltale illuminates in red
"ACB/Cruise Temporarily Disabled Brake Overuse"
pop-up message appears on the DID
"ACB Not Available" pictogram appears on the DID
status line
FORWARD VEHICLE DETECTED telltale light
ACB NOT AVAILABLE pictogram
PA-1619 Owner's Manual H3-45 VIP
Controls and Instruments 4-65