Failure Display Mode/Fault Codes
The VS-400 performs internal diagnostics at power-up, then continuously monitors system components thereafter.
If a failure is detected, depending on what features are affected, the DIU displays a screen similar to See Fig., blinks the orange fault light, and sounds a tone. Press the OK button to acknowledge the fault.
Fig. 1, VORAD Fault Display
After the fault has been acknowledged, the DIU will attempt to return to normal operations. The orange LED is continuously illuminated while the fault persists. If the fault disappears, the VS-400 transmits a message to indicate that the fault status has changed to a previously active fault.
In the event the CWS antenna becomes blocked while the vehicle is moving (e.g., snow, mud, ice, tampering, etc.), the system sounds a tone and displays the fault screen shown in Fig..
Contact an authorized Freightliner dealer to review and clear previously active fault codes.
