Bendix Commercial Vehicle Systems VORAD VS-400 INSTALLATION NOTES - Manual (Page 9)

Product Safety Information
7
Pretest Procedures
Retrieving Diagnostic Trouble Codes (DTCs)
Overview
This section determines if the Driver Interface Unit (DIU) and the Forward Looking Radar (FLR) are both communicating on the vehicle’s
J1939 data link and if either component has set any Diagnostic Trouble Codes (DTCs) . In order for the system to operate properly, the DIU
and the FLR must be able to communicate with each other, as well as other ECU’s on the vehicle’s J1939 data link .
Note: This procedure requires an approved PR1210A communications adapter that supports J1939 communications .
Detecting Components
Connect the service PC to the vehicle’s 9-pin J1939 diagnostic port connector with an approved RP1210A communications adapter . Start
the diagnostic program and verify that a connection has been established with the vehicle’s J1939 data link .
View the Vehicle Components screen and verify that the VORAD ® VS-400 Forward Looking Radar (source address 42) and the Driver
Interface Unit (source address 140) are being detected .
Data Link Source Address ECU Description
J1939 42 Forward Looking Radar
J1939 140 Driver Interface Unit
• If the DIU or the FLR are not being detected, proceed to the Electrical Pretest procedure to check for power to the VS-400
system components and that all components are properly connected to the vehicle’s J1939 data link .
Viewing Diagnostic Trouble Codes (DTCs)
View the Vehicle Diagnostic Trouble Codes (DTCs) screen in the diagnostic software and verify if the Forward Looking Radar or the Driver
Interface Unit have set any Active or Inactive codes .
• If an Active VS-400 code is present, record the vehicle Diagnostic Trouble Code (DTC) information and proceed to Diagnostic
Procedure in this manual for the Active code for more information . Do not clear any codes at this time .
• If only Inactive (historic) VS-400 codes are present, record the vehicle Diagnostic Trouble Code (DTC) information and clear all
historic Diagnostic Trouble Codes (DTCs) . Road test the vehicle to verify proper operation of the VS-400 system .
Clearing Diagnostic Trouble Codes (DTCs)
After all repairs have been made and the system is functioning normally, clear all vehicle codes before placing the vehicle back into service .
To clear codes, connect the service PC to the vehicle and start diagnostic software . View the Vehicle Diagnostic Trouble Codes (DTCs)
screen and select Clear All . Refresh the screen to verify all historic codes have been cleared and that no Active codes are present .