Bendix Commercial Vehicle Systems WINGMAN ADVANCED FLR20 SENSOR - Manual (Page 15)

15
Narrowing Down the Problem (3.2)
Questions Next Steps
Did the radar sensor currently on the vehicle
come from another vehicle?
The radar sensor may be incompatible with the new vehicle. Follow Section
1.10: Radar Sensor Interchangeability procedure and check system trouble codes
with Bendix ® ACom ® Diagnostics software.
Read Section 4.3: Diagnostic Trouble Codes.
With cruise control set, does the system
consistently apply the foundation brakes
when a forward vehicle slows?
This is normal operation. Continue asking the driver questions to determine if
the radar system interventions are not the expected Bendix Wingman Advanced
behavior. If the radar system interventions are not typical, the radar sensor may
be misaligned.
•
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 needed. Follow the actions directed in the procedure and align
the radar.
• Appendix B4 - Check the vertical alignment and adjust if needed.
The service technician will need to check trouble codes as well. Read Section
4.3: Diagnostic Trouble Codes.
Does a diagnostic trouble code (DTC) seem
to occur when driving through the desert
or in barren areas (no road signs, trees or
vehicles)?
In normal operation, the adaptive cruise control with braking feature of Bendix ®
Wingman ® Advanced ™ system may indicate a DTC if it hasn’t detected a metallic
object after a pre-determined period. This is rare, but most likely to occur when
driving in deserts or barren areas. If the system does set a DTC, Wingman
Advanced provides a visible warning to the driver. In addition, the vehicle also will
drop out of cruise mode, providing an audible and/or visual warning to the driver
as well. The driver must pull off the road, and cycle the ignition to before the
vehicle’s cruise control can be used.
Does the system seem to disengage after an
automatic braking event?
This is normal operation. The driver must set or "resume" the cruise control once
again to regain the following distance function.
Does cruise control disengage sometimes
when the brakes come on and not at other
times?
This is normal operation. When traveling with lightly loaded trailers, or “bobtail”, the
adaptive cruise control with braking feature of Wingman Advanced may continue to
function even after an automatic brake application. No driver input is needed.
Does the connector or wiring appear
damaged?
Wires can become corroded if the radar sensor is not plugged in properly. Clean
the connectors on the wire harness, as well as the radar sensor, and reattach. If
wires are chafed, replace the wire harness. Also, check for trouble codes.
Read Section 4.3: Diagnostic Trouble Codes, and
Section 4.8: Troubleshooting Wiring Harnesses.
Does the system generate a diagnostic
trouble code going down a grade when
using ACB to slow the vehicle, but the code
goes away later?
This is normal operation. The adaptive cruise control with braking feature of
Wingman Advanced is not intended to be used on grades. Verify there are no
diagnostic trouble codes. Proper downgrade driving techniques should be used.
Read Section 4.3: Diagnostic Trouble Codes.
Does the radar sensor have noticeable
damage beyond normal discoloration or
surface scratches?
The radar sensor and bracket are very durable. However, if the radar sensor
housing or cover is cracked or broken, immediately look for trouble codes via a
current version of Bendix ® ACom ® Diagnostics and replace the damaged radar
sensor. Read Section 4.3: Diagnostic Trouble Codes, and Appendix A.02: Radar
Sensor Mounting.
TABLE 4 - NARROWING DOWN THE PROBLEM
(PAGES 14-15)