Bendix Commercial Vehicle Systems VORAD VS-400 INSTALLATION NOTES - Manual (Page 29)

General Information
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Diagnostic Trouble Code (DTC)
Isolation Procedures
Component Code: 35, 36
(SA 42, SPN 639, FMI 9)
J1939 Data Link Diagnostic Trouble Code (DTC)
Overview
This code indicates that the VS-400 Forward Looking Radar (FLR) or the Driver Interface Unit (DIU) has detected that there is a J1939 data
link Diagnostic Trouble Code (DTC) condition .
Diagnostic Trouble Code (DTC) Detection
At power up and throughout operation, the FLR, DIU, and other devices continuously communicate with each other on the J1939 data link .
If there is a J1939 Diagnostic Trouble Code (DTC) condition, such as a corrupted message, incorrect message formatting, or the complete
loss of all J1939 data, the Diagnostic Trouble Code (DTC) is set .
• Code 35, FMI 9 - The DIU has detected a J1939 Diagnostic Trouble Code (DTC) condition.
• Code 36, FMI 9 - The FLR has detected a J1939 Diagnostic Trouble Code (DTC) condition.
Symptom
The Bendix ™ VORAD ® VS-400 Collision Warning and the Bendix ™ SmartCruise ® adaptive cruise control will fail to operate and the orange
DTC light on the Driver Interface Unit will be illuminated . If SmartCruise ® adaptive cruise control is enabled the vehicle’s cruise control may
not operate while this Diagnostic Trouble Code (DTC) is active .
Possible Causes
• Loose, corroded, or open J1939 data link connections
• Malfunctioning device on the J1939 data link causing other ECU’s to fail communications.
Repair Procedure
Active Diagnostic Trouble Code (DTC) Steps to Perform
Code 35, FMI 9
OR 1 . Perform the "Component Power Supply Test" in the Appendix .
Code 36, FMI 9 2 . Check the vehicle’s J1939 data link for poor connections, opens or short circuits .
3 . Verify that all ECUs on the data link are functional and broadcasting data per the
manufacturer’s specifications . Note: Isolate any suspect malfunctioning ECU’s by
disconnecting them from the data link .
4 . Perform Electrical Pretest to check data link connections to the VS-400
components .
5 . Test Complete .