No

_____________

Is the engine throttle reduced?

Yes

No

_____________

Is the engine retarder applied?

Yes

No

_____________

Are foundation brakes applied?

Yes

No

_____________

Are there Diagnostic Trouble Codes (DTCs) logged?

Yes

No

_____________

Does the truck proceed toward the forward vehicle without a following
distance alert or braking intervention?

Yes

No

_____________

Does the Bendix Wingman Fusion system continue to follow the vehicle
through the curves at a constant distance?

Yes

No

_____________

Does the truck proceed toward the forward vehicle without a following
distance alert or braking intervention?

Yes

No

_____________

Does the Bendix Wingman Fusion system ignore
the vehicle you are overtaking?

Yes

No

_____________

Does it give a following distance alert?

Yes

No

_____________

While following a forward vehicle within radar range and the cruise control is
switched on and set, record your response to the following:

With engine cruise “off” and a forward vehicle present, does the audible alert
become faster as the truck moves closer to the forward vehicle?
With cruise control switched on and set, when the forward vehicle slows
moderately or cuts in front of the truck and slows, did the driver observe any of
the following conditions?

With cruise control engaged, and while following a vehicle ahead in gentle
curves (assuming a 3 to 3.5 second following distance):

With cruise engaged, when your vehicle passes a slower vehicle on the left or
right on a straight or slightly curvy road:

7

Troubleshooting Checklist (Pages 7–8)
WARNING: The Troubleshooting Checklist should not be completed while the vehicle is in motion
and the while the driver is completing the scenarios and tests.
Detailed Scenarios and Tests

Record Driver’s Answers for
Follow-up with Bendix

With cruise engaged, if a faster vehicle passes your vehicle on the left or right
on a straight or slightly curvy road:
Does your vehicle throttle up and try to keep pace
with the faster moving vehicle?

Yes

No

_____________

Does it give a following distance alert?

Yes

No

_____________

Does your vehicle slow and Bendix® Wingman® Fusion™
maintain the following distance?

Yes

No

_____________

Is the engine throttle reduced?

Yes

No

_____________

Is the engine retarder applied?

Yes

No

_____________

Are the foundation brakes applied?

Yes

No

_____________

Are there Diagnostic Trouble Codes (DTCs) logged?

Yes

No

_____________

Does your truck proceed toward the forward vehicle without
a following distance alert or braking intervention?

Yes

No

_____________

With cruise control engaged, if the vehicle ahead slows moderately or cuts in
front of your truck and slows down:

What version of Bendix® ABS and Bendix Wingman Fusion system is installed on
the vehicle? See Section 2.3: Reading the System Software Version.

___________________________

___________________________
What are the key system indicators?
See Section 3.1: Reading Bendix Wingman Fusion System Key Indicators.

___________________________
___________________________
___________________________
___________________________

8

1.2 NARROWING DOWN THE PROBLEM
Use the questions found in Table 2 below to help assess if the Bendix® Wingman® Fusion™ system is not performing
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.

Narrowing Down the Problem (1.2)
Questions

Next Steps

Blocked Radar Sensor Issues
Is mud, ice, or snow covering the
radar sensor?

Clean the radar sensor front surface immediately. Remove anything blocking the radar
sensor then power cycle and read any remaining trouble codes.

Is anything blocking the view of the
radar sensor?

Read Section 2.5: Diagnostic Trouble Codes.
Read Appendix A3: Bendix™ FLR-20™ Radar Sensor Mounting Clearance.
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.

Potential False Warnings
Do false warnings seem to happen
in construction zones or going under
bridges?

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.

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?

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.

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)

9

Narrowing Down the Problem (1.2)
Questions

Next Steps

Has the system worked without
problems in the past but is not
working as expected now?

This is a good indication that something has changed – such as misalignment of the radar
sensor. Review the following questions with the driver to further diagnose the problem.

Has the radar sensor been
changed recently?

If so, the new radar sensor may be incompatible with the vehicle. In addition, check any
system Diagnostic Trouble Codes (DTCs) with Bendix® ACom® PRO™ diagnostic software.
Read Section 2.5: Diagnostic Trouble Codes.

Did the radar sensor currently on
the vehicle come from another
vehicle?

The radar sensor may be incompatible with the new vehicle. Follow Section K1.15: Radar
Sensor Interchangeability procedure and check system DTCs with Bendix ACom PRO
diagnostic software. Read Section 2.5: 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® Fusion™ system 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 2.5:
Diagnostic Trouble Codes.

Does a DTC seem to occur when
driving through the desert or in
barren areas (no road signs, trees,
or vehicles)?

In normal operation, the active cruise control with braking feature of the Bendix Wingman
Fusion system may indicate a DTC if it hasn’t detected a metallic object after a predetermined period. This is rare, but most likely to occur when driving in deserts or barren
areas. If the system does set a DTC, the Bendix Wingman Fusion system provides a
visible warning to the driver. In addition, the vehicle will also 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 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 active
cruise control with braking feature of the Bendix Wingman Fusion system 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 2.5: Diagnostic Trouble Codes, and
Section 2.12: Troubleshooting Wiring Harnesses.

Does the system generate a DTC
going down a grade when using
ACB (Active Cruise‑control with
Braking) to slow the vehicle, but the
code goes away later?

This is normal operation. The active cruise control with braking feature of the Bendix
Wingman Fusion system is not intended to be used on grades. Verify there are no DTCs.
Proper downgrade driving techniques should be used.

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 Bendix ACom PRO
diagnostic software and replace the damaged radar sensor. Read Section 2.5: Diagnostic
Trouble Codes, and Appendix A3: Radar Sensor Mounting Clearance.

Read Section 2.5: Diagnostic Trouble Codes.

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)

10

1.3 OVERVIEW OF POSSIBLE ISSUES
Some customer issues are actually misunderstandings of how the Bendix® Wingman® Fusion™ system performs normally.
Use Table 3 below to learn the causes of potential issues if the Fusion system is not performing correctly. Some issues
can be investigated by a visual inspection. Others may cause a Diagnostic Trouble Code (DTC) to be logged: See
Section 2.5: Diagnostic Trouble Codes.

Overview of Possible Issues (1.3)
Issue

Description

Vehicle Diagnostic
Trouble Codes
(DTCs)

The Bendix Wingman Fusion system will not operate and will set a DTC if any of the
following vehicle systems also show a DTC: engine, engine cruise, instrument cluster,
Bendix® ABS, Bendix® ATC, Bendix® ESP®, or transmission. These components must be
repaired and cleared of DTCs before troubleshooting the Wingman Fusion system. (NOTE:
Clearing the vehicle DTCs may be the only step needed to reestablish full Fusion system
functionality. See Section 2.6: Clearing Diagnostic Trouble Codes (DTCs).

System familiarity

Verify the system functionality. Is it operating normally or not? Drivers who are unfamiliar
with the system may report dissatisfaction over the way it beeps or how it activates the
brakes. Use Section 1.0: Introduction to Troubleshooting, Section 1.1: Troubleshooting
Basics, and Section 2.5: Diagnostic Trouble Codes to verify if the system is functioning
normally; then continue.

DTCs caused by
temporary operating
conditions

Some DTCs indicate a temporary condition and will clear when that condition is no longer
present. If these persist, further investigation is warranted.

Radar sensor
blocked

If the system doesn’t seem to work at all, the radar sensor may possibly be blocked. If the
radar is blocked, an alert should be issued to the driver to indicate this condition. Visually
inspect the area around the radar, clear the blockage, turn the ignition on and run through a
power cycle. See Appendix A3 for more information about radar mounting and clearances.

Damaged radar
sensor or bracket

If the vehicle has been in an accident, it is likely the radar sensor will need to be re-aligned or
replaced. Inspect the radar sensor and housing for damage. Radar sensor discoloration or
small scratches may be acceptable. Significant damage (such as cracks or broken pieces)
will require radar sensor replacement. Regardless of the exterior condition, check for DTCs
outlined in the Section 2.5: Diagnostic Trouble Codes (DTCs) to determine if radar sensor
replacement is necessary.

Damaged connector
or wiring

Visually inspect the connector and wire harness for corrosion or chafing. Refer to Sections
2.7: Troubleshooting Diagnostic Trouble Codes: Power Supply and 2.8 Serial Data (J1939)
Communications Link of this document for additional troubleshooting.

Radar sensor
misalignment

Inspect the front of the vehicle. If a) it has been damaged; or b) the vehicle does not track
straight, either of these conditions must be repaired before troubleshooting the Bendix Wingman
Fusion system.

See Section 1.1: Troubleshooting Basics.

If there is a DTC set or if the system does not function, the radar sensor may be severely
misaligned and the Wingman Fusion system will not operate until this is corrected. See
Appendix B - Radar Alignment.
J1939 network
problems

If the entire system is non-functional, it may be a J1939 network problem. Follow the
instructions in Section 2.8: Serial Data (J1939) Communications Link.

Power to radar
sensor problems

If the entire system is non-functional, another likely cause may be a lack of power to the radar sensor.
Follow the instructions in Section 2.7: Troubleshooting Diagnostic Trouble Codes: Power Supply.

Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
Table 3 – Overview of Possible Issues

11

1.4 IMPORTANT NOTE ON
TELEMATICS WIRING
Where a vehicle does not have an On Board Computer/
Telematics (OBC/T) system – in order to prevent
interference to the SafetyDirect® By Bendix CVS Web
Portal Processor – disconnect the OBC/T harness (any
wiring harness provisionally installed in the vehicle for
potential use for Telematics) from the main vehicle harness.
Re-connect the harness only when an OBC/T system is
installed. (See Appendix K, Figure K6).

STARTING BENDIX ACOM PRO
DIAGNOSTIC SOFTWARE
The Bendix ACom PRO diagnostic software can be started
from the desktop shortcut, or from the main Windows®
screen with “Start...Programs...Bendix...ACom PRO
diagnostic software.” See Figure 5 plus Appendices F
and G. To begin, the technician selects “Wingman” from the
Starter screen, then “Start with ECU” from the Diagnostic
Control panel.

2.0 TROUBLESHOOTING/
DIAGNOSTICS SECTION
IMPORTANT NOTE: All vehicle Diagnostic
Trouble Codes (DTCs) related to the engine,
transmission, instrument cluster, engine
cruise control, and Bendix ® ABS, ATC, or
ESP® systems must first be resolved – with
no trouble codes present during the vehicle
operation while in cruise control – before
attempting to diagnose Bendix® Wingman®
Fusion™ system DTCs.
Important examples are VDC2 and EBC
DTCs which are typically related to the brake
controller. The hierarchy of Electronic Control
Units (ECUs) determines that any DTCs on
the brake controller must be resolved before
attempting to troubleshoot the Wingman
Fusion system.

2.1 BENDIX® ACOM® PRO™
DIAGNOSTIC SOFTWARE
Bendix® ACom® PRO™ diagnostic software is a PC-based
software program available as a download from the
Bendix web site (bendix.com). This software provides the
technician with access to all the available ECU diagnostic
information and configuration capability. For Wingman
Fusion system diagnostics, use ACom PRO diagnostic
software.

Figure 4 – Bendix ACom PRO Diagnostic Software

12

Figure 5 – Starting Bendix ACom PRO Diagnostic Software

NOTE: When using ACom PRO diagnostic software for
the first time, the service technician will be asked to select
the communication adapter for both the Bendix Wingman
Fusion system and Bendix ABS and stability controllers.
While both controllers will use the same physical adapter,
the technician will need to indicate which communication
protocol to use for each. Once a successful connection
has been made, these steps will no longer be necessary.
The Bendix ACom PRO diagnostic software for ABS User
Guide is available for download at bendix.com and should
be used as a reference to all functions of the ACom PRO
service tool.

2.2 READING DIAGNOSTIC
TROUBLE CODES (DTCS)

2.3 READING THE SYSTEM
SOFTWARE VERSION

If the system generates a Diagnostic Trouble Code (DTC),
where a lamp or icon is illuminated on the instrument
cluster, then a current version of Bendix® ACom® PRO™
diagnostic software is required. Select “Wingman” from
the starter screen, then “Start with ECU”. Click “DTC”
to show the DTCs. See Appendix E for screen shots.
See Section 2.5 for a complete table showing DTCs and
troubleshooting information.

If during troubleshooting you are asked for the Bendix®
Wingman® Fusion™ system software version, the number
is found on the “Wingman Fusion System Status” tab. See
Figure 6. Also, see Section 3.1 for other system indicators.

.
Figure 6 – Bendix® ACom® PRO™ Diagnostic Software
Starter Screen Showing Software Version

2.4 HOW TO GENERATE A BENDIX WINGMAN FUSION SYSTEM
DIAGNOSTIC TROUBLE CODE (DTC) REPORT
1. Click the Bendix ACom PRO diagnostic software desktop