BENDIX Wingman Fusion FLR-21 Service Data page 9

1.2 NARROWING DOWN THE PROBLEM
Use the questions found in Table 2 below to help assess if the Bendix
correctly. Be sure to have a thorough understanding of the system's normal behavior; this will reduce the troubleshooting
time. The table provides a guide to basic troubleshooting questions and possible corrective actions. Items in Italics cross-
reference to the service procedures in this manual to repair the condition described.
If Bendix Tech Team assistance is needed, prior to calling us at 1-800-AIR-BRAKE (1-800-247-2725), option 2, complete
the Troubleshooting Checklist to help reduce the time needed to troubleshoot the system.
Questions
Blocked Radar Sensor Issues
Is mud, ice, or snow covering the
radar sensor?
Is anything blocking the view of the
radar sensor?
Potential False Warnings
Do false warnings seem to happen
in construction zones or going under
bridges?
Mounting Problems
Is the radar sensor mounting
location (bumper or cross-member)
damaged?
Does the system seem to not "see"
as far as it "used to", or warn on
many more overhead bridges/signs
than previously?
Does the mounting bracket look
damaged or tampered with?
Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2, for troubleshooting assistance.
Table 2 – Narrowing Down the Problem (Pages 9–10)
Narrowing Down the Problem (1.2)
Clean the radar sensor front surface immediately. Remove anything blocking the radar
sensor then power cycle and read any remaining trouble codes.
Read Section 2.5: Diagnostic Trouble Codes.
Read Appendix A3: Bendix
If the radar sensor is blocked by ice, snow, mud, tampering, etc. so that it cannot "see" a
forward vehicle, the Bendix Wingman Fusion system will notify the driver by an audible
and/or visual alert. After the blockage is removed, the audible and/or visual alert will be
removed. Drivers should visually check the radar sensor for blockage during the pre-trip
inspection.
Several road scenarios have a tendency to cause false warnings, including construction
zones and bridges. Unless these false warnings are frequent, the system is likely reacting
normally. The driver should not set the cruise control in construction zones. If driver
complaints persist, continue asking questions to more narrowly define the driving condition
presenting the problems. Review proper operating conditions in the operator's manual.
Re-align the radar sensor vertically and laterally. Use the following procedures:
• Inspect the radar mounting. A solid mounting surface is necessary in order to hold the
alignment. If the bumper or mounting cross-member is damaged, replace it first, then
align the radar sensor.
• Appendix B1 - Go to Appendix B1 and use the flowchart to find out the procedure(s)
needed. Follow the actions directed in the procedure(s) and align the radar.
• Appendix B4 - Check the vertical alignment and adjust if needed.
Other than expected surface scratches or some discoloration over time, there should be no
visible damage to the radar sensor bracket assembly or the bumper. If no visible damage is
found, realign the radar sensor vertically and laterally.
• Check the Vertical Alignment (Appendix B4) and adjust if needed.
• Check the Lateral Alignment (Appendix B2 and B3) and adjust if needed.
The radar sensor needs a solid mounting surface in order to hold the alignment. If the
radar sensor alignment cannot be held in place, the bracket assembly must be replaced,
and/or if the bumper or mounting cross-member is damaged, replace it as needed. Where
replacing either or both of these, align the radar sensor using the procedure shown in
Appendix C.
Wingman
® ®
Next Steps
FLR-21 Radar Sensor Mounting Clearance.
™ ™
Fusion system is not performing
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9