Bendix Commercial Vehicle Systems VORAD EVT-300 TROUBLESHOOTING - Manual (Page 108)

3-11
Symptom Isolation Procedures
Driver Card Not Reading
Overview
This symptom driven test is performed when the Bendix ™ VORAD ®
system fails to detect the Driver Card in the Driver Display Unit.
Detection
The VORAD Central Processing Unit will detect the Driver Card
when placed in the Driver Display Unit. The symptom is observed
by the driver when no read tones are heard from the Driver Display
Unit.
Fallback
There is no fallback mode for this symptom.
Required Tools
• New Driver Card
Possible Causes
This fault can be caused by any of the following:
• Driver Display Unit
• Faulty Card
Harness
Driver
Display Unit
Central
Processing Unit