Bendix Commercial Vehicle Systems VORAD EVT-300 DRIVER INSTRUCTIONS - Manual (Page 31)

Maintenance/Diagnostic
Preventive Maintenance
The only maintenance required should be to keep the Antenna Assembly and Side
Sensor clean of heavy buildups of mud, dirt, ice, and other materials that could
reduce the range of the system. Antenna alignment should also be checked if any
occurrence may have caused it to be misaligned.
WARNING: The system will not sense objects if the sensor view is
obstructed. Therefore, do not place objects in front of the system
sensors. Remove heavy buildups of mud, dirt, ice, and other materials.
WARNING: Proper alignment is critical to correct operation of the
system (See BW2863 for Antenna Assembly Alignment procedure).
WARNING: Be sure the vehicle is not moving during the initial self-test
conducted at vehicle start-up. If the vehicle is in motion, the system
may not operate properly. No collision warning system alerts will be
given by the EVT-300 system until all lights are extinguished after the
self-test is complete.
Diagnostic Features
The system performs testing on a continuous basis. Every 15 seconds, the results of
these tests are evaluated by the Central Processing Unit to determine whether or not
to report a failure. If a failure occurs within the front radar system, the red “FAIL” light
on the Driver Display Unit will illuminate continuously as long as the failure is active,
and the associated failure code is stored in the Central Processing Unit memory until
maintenance personnel are able to check the system.
The Bendix ™ VORAD ® EVT-300 system can indicate active and inactive fault codes
stored in the Central Processing Unit memory when it is placed into its “Failure
Display Mode”. Inactive fault codes are faults which have occurred and have self-
corrected. Active faults are faults that are still present. These fault codes provide
the driver the ability to record the system fault during a trip and call either the
maintenance department or Bendix Commercial Vehicle Systems for assistance.
When placed into its “Failure Display Mode” (see “How to Activate Failure Display
Mode” on page 28), specifi c fault codes are indicated by a pattern of fl ashes blinked
out on the Driver Display Unit’s red “FAIL” light indicator.
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