Clear the camera’s DTCs.
»

ycle the ignition power, or use the ACom Diagnostic Software to clear DTCs after troubleshooting
C
– and correcting – any problem with the system.

This DTC is not an indicator of a malfunctioning camera. DO NOT REPLACE THE CAMERA.
Possible Causes:
•

The camera is indicating that there is a problem with parameterization or an error has occurred.

Perform the following:
G

•

Check for proper ABS functionality and repair if necessary.

•

Clear ABS DTCs.

•

Determine if the camera was mounted properly on the windshield per OEM specifications.

•

Verify the correct mounting bracket is installed. Do not alter the angle of the bracket.

•

After addressing the possible causes clear the camera’s DTCs.
»

ycle the ignition power, or use the ACom Diagnostic Software to clear DTCs after troubleshooting
C
– and correcting – any problem with the system.

NOTE: The system will not report newly active J1939 DTCs until the engine has been running for 15 seconds.
Do not attempt to diagnose J1939 DTCs without the engine running.
Call the Bendix Tech Team at 1‑800‑AIR‑BRAKE (1‑800‑247-2725), option 2, for troubleshooting assistance.
Table 2 – Service Action Codes to Recommended Service

24

Service
Action
Code

Recommended Service
This DTC is not an indicator of a malfunctioning camera. DO NOT REPLACE THE CAMERA.
Possible causes:
•

H

Camera NOT CALIBRATED.

Perform the following:
•

Go to Section 3.1 and follow the actions directed in the procedure to calibrate the camera.

•

Clear the system DTCs.
»

ycle the ignition power, or use the ACom Diagnostic Software to clear DTCs after troubleshooting
C
– and correcting – any problem with the system.

This DTC is not an indicator of a malfunctioning camera. DO NOT REPLACE THE CAMERA.
Possible Causes:
The system using the camera has either the incorrect/outdated software version, incorrect parameters,
or wasn’t updated properly during a firmware upgrade.
Perform the following:
J

•

Check that the camera is connected to the original vehicle and calibrated (ensure there are no
calibration faults present).

•

Contact the OEM for the build sheet to confirm the correct parameters and software are loaded.

•

Confirm correct parameters, software, and part numbers are loaded for your VIN.

•

Clear the camera’s DTCs.
»

ycle the ignition power, or use the ACom Diagnostic Software to clear DTCs after troubleshooting
C
– and correcting – any problem with the system.

This DTC is not an indicator of a malfunctioning camera. DO NOT REPLACE THE CAMERA.
Possible Causes:
M

•

These are function specific error codes, and generated when the system notices abnormal operation
of the function.

Perform the following:
•

Cycle ignition power, and resolve faults that may exist on other components.

NOTE: The system will not report newly active J1939 DTCs until the engine has been running for 15 seconds.
Do not attempt to diagnose J1939 DTCs without the engine running.
Call the Bendix Tech Team at 1‑800‑AIR‑BRAKE (1‑800‑247-2725), option 2, for troubleshooting assistance.
Table 2 – Service Action Codes to Recommended Service

25

2.6 TROUBLESHOOTING
DIAGNOSTIC TROUBLE CODES
(DTCS): POWER SUPPLY

HRS HIROSE ELECTRONIC (GT25RM-12DP-2.2H)
Mates with a Hirose number: GT25-12DS-HU/R(50) that uses
female pins TE number: 1318774 or TE number: 1717106

IGNITION VOLTAGE TOO LOW
1. Measure the ignition voltage under load.
2. Ensure that the ignition voltage is greater than 9 VDC.
3. Check the vehicle battery and associated components.
Inspect for damaged wiring, damaged or corroded
connectors, and loose connections.

Figure 4 – Camera and Harness Connector Views

4. Check the condition of the fuse.

POWER SUPPLY TESTS

IGNITION VOLTAGE TOO HIGH

1. T
ake all measurements at the camera’s harness
connector.

1. Measure the ignition voltage.
2. Ensure that ignition voltage is not greater than 16 VDC.
3. Check the vehicle battery and associated components.
4. Inspect for damaged wiring, damaged or corroded
connectors, and loose connections.

CONNECTOR PIN-OUT AND
POWER REQUIREMENTS
The camera has two (2) connectors. See Figure 4.

Nominal
Voltage

Nominal
Current

Pin #

Description

1

Not Used

2

Private
Communications Low

5V

3

J1939 Low

5V

4

Ground GND (-)
Optional

0V

540 mA

5

Not Used

6

Not Used

7

Module Power

14 V

540 mA

8

Private
Communications High

5V

9

J1939 High

5V

10

Ground GND (-)

0V

11

Not Used

12

Not Used

Table 3 – Harness Connector Pins

26

540 mA

2. P
lace a load (e.g. 1157 stop lamp) across the supply
voltage and ground connection. Measure the voltage
with the load. The supply voltage on pin 7 to ground
should measure between 10 to 16 VDC.
3. C
heck for damaged wiring, damaged or corroded
connectors, and loose connections.
4. C
heck the condition of the vehicle battery and
associated components. Ensure the connection to
ground is secure and tight.
5. U
sing the procedures described by the vehicle
manufacturer, check the alternator output for excessive
noise.

2.7 COMMUNICATIONS (J1939
AND PRIVATE) TEST AND
TROUBLESHOOTING PROCEDURES
The Bendix FLC-25 camera requires private network
messages to and from the Fusion system. The camera will
set a DTC if these messages are not present, or if there is
a problem with the private communications system. Refer
to SD-29-50022, Bendix® Fusion™ FLR-25™ Radar Sensor,
on B2Bendix.com for full troubleshooting information.
NOTE: Confirm there are no DTCs on other components.
If there are active DTCs, they should be addressed prior to
performing additional troubleshooting procedures.
1. Take all measurements at the harness connector unless
otherwise indicated.

Do not insert any probe into the pin on the mating
connector of the camera that is greater than the width
of a terminal. Damaged connector pins will require the
replacement of the harness.
2. C
heck for damaged or reversed private communications
wiring.
If the private communications HIGH, or private
communications LOW, wiring circuits are damaged, such
as shorting together, the entire private communications
link will be lost. The problem may be intermittent,
enabling the private communications link to operate
normally sometimes. In this event, multiple DTCs may
be logged in the camera and radar.
If the private communications HIGH, and private
communications LOW, wiring circuits are reversed,
communication over the entire private communications
link will be lost. Devices that use the affected network
will not be able to transmit or receive messages on that
network.
3. C
heck for corroded or damaged wiring connector
problems such as opens or shorts to voltage or ground.
4. I f the connector terminals are corroded, this may be an
indication of water intrusion into the wiring system and
possibly the camera. Replacement of the entire harness
is recommended. If the terminals of the camera are
corroded, replacement of the camera is recommended.
5. C
heck for other private communications devices
which may be inhibiting communication. The service
technician should consult the procedures for private
communications troubleshooting. The device’s power
should be removed and measurements made at the
ECU pins for shorts to ground and power pins and
resistance between the private communications HIGH
or private communications LOW input circuits.

6. U
nplug the camera harness. With the ignition switch
off, measure the resistance (ohms) using a multimeter.
•

rivate Communications: Measure the resistance
P
between harness pins 2 and 8. The reading should
be approximately 120 ohms. If it is not, the vehicle
wiring should be investigated.

•

J 1939: Measure the resistance between harness
pins 3 and 9. The reading should be 0 ohms. If it
is not, the vehicle wiring should be investigated.

2.8 PRIVATE COMMUNICATIONS
NETWORK TEST PROCEDURE
The Bendix FLC-25 camera requires private network
messages to and from the Fusion system. The camera will
set a DTC if these messages are not present, or if there is
a problem with the private communications system.
Refer to SD-29-50022, Bendix ® Fusion ™ FLR-25 ™
Radar Sensor, on B2Bendix.com for full troubleshooting
information.

2.9 TROUBLESHOOTING
WIRING HARNESSES
All wire harness connectors must be properly seated to
maintain electrical connectivity. Push the mating connectors
until they click. When replacing an FLC-25 camera, check
that the wire harness connectors are free of damage,
including corrosion, before plugging into a new camera.
Check for corroded or damaged wiring connector problems
such as opens or shorts to voltage or ground.
If the connector terminals are corroded, this may be an
indication of water intrusion into the wiring system and
possibly into the camera (presumably from a cracked
windshield). Replacement of the entire harness is
recommended. If the terminals of the camera are corroded,
replacement of the camera is recommended.

2.10 CLEARING DIAGNOSTIC
TROUBLE CODES (DTCS)
Cycle the ignition power, or use the ACom Diagnostic
Software to clear DTCs after troubleshooting – and
correcting – any problem with the system.

27

3.0 INSTALLATION AND REPLACEMENT

CAMERA INSTALLATION

Refer to OEM documentation for mounting specifications.

In instances where a third-party bracket and/or cover
is used, follow the applicable OEM instructions. If a
Bendix bracket and/or cover is used, refer to the following
procedures.

Whenever re-installing or replacing a camera –
for example, after a windshield is replaced – the
recommended position for the vehicle must be used.
Failure to install the camera in the correct position can
result in system DTCs being set, system performance
degradation, and/or a collision causing property
damage, serious injuries, or death.

NOTE: A Bendix bracket and cover can be identified by
a Knorr-Bremse® logo on the component. See Figure 5.

Contact the OEM for specific location coordinates of
the windshield where the camera should be installed.

BRACKET INSTALLATION
The bracket should be installed by the windshield supplier
or per the OEM-recommended installer.

Figure 5 – Bendix Bracket and Cover PN Location
1. Hold the camera in a lens-up orientation. Referring to
Figure 6, insert the tabs (A) into the slots (B).

Figure 6 – Camera Installation
28

2. Rotate the camera counterclockwise (when viewed
from the left [driver] side) until the tabs (C) contact
the clips (D).
3. Push the camera down so that the clips (D) are
displaced by the tabs (C), therefore seating the camera.
The clips will audibly click when the tabs reach the
correct position and the clips spring into a locked
position, retaining the camera. See Figure 7.

Figure 8 – Clips in Locked Position
NOTE: Due to proximity to the headliner, it may be
necessary to use an inspection mirror to verify the clips
are locked.
COVER INSTALLATION
See Figure 9.
Figure 7 – Camera Aligned
4. In some cases, the clips will not “click” into position.
Verify that the clips are in the locked position as shown
in Figure 8. Sometimes it is necessary to pry the clips
into the final locked position. In most cases, this can
be done using finger pressure. In some cases, needlenose pliers or small screw drivers may be needed.

1. Line up the large “ears” on the bracket with the slots
in the cover.
2. Align the cylindrical tabs A and A with slots B and B
in the cover.
3. Gently push the cover onto the bracket. The front
surface of the cover will be flush with the back surface
of the bracket when the tabs are properly aligned and
seated.
4. Pull the cover down locking it in position. There will be
an audible click when the cover fully seats.

Figure 9 – Cover Installation
29

BRACKET REMOVAL
The bracket should be removed per OEM recommendations.

COVER AND CAMERA REMOVAL
The camera is most easily removed from the holder if it is
removed from the bracket assembly. This will depend upon
the proximity of the headliner. In most cases, there will not
be sufficient clearance to access the clips that retain the
camera in the holder.

4. Once the hub (B) is released from the beam (A), the
right side of the holder with the camera can be pulled
back from the bracket assembly. This will allow the
entire holder and camera to be removed from the
bracket assembly.
5. Once on the bench, the clips can be released from the
tabs on the camera body. Push on the clips as indicated
by the arrows in Figure 11.

1. Begin by removing the cover from the camera. This is
the reverse of installation. Push the cover up. Once the
cover is moved upward, it can be pulled back, and off
the bracket assembly. Take note of the holder position.
2. Remove the electrical connectors with attached wiring
from the camera. The connectors have locking features
that require squeezing them to facilitate removal.
3.

See Figure 10. Use a screwdriver to pry the locking
beam (A) away from the hub (B) on the right side of
the bracket.

Figure 11 – Camera Removal
6. Once the clips are released, the camera can be rotated
up and out of the clips. This may require the use of
screwdrivers to pry the camera from the clips.

Do NOT pry between the bottom of the camera and the
holder with tools. It is easily broken.
7. Check the holder for damage. If there is no damage,
return the holder to the bracket. Note that the hubs on
the holder fit into slots on the bracket and then can be
slid into place. Start with the hub on the right (curb)
side of the bracket. Once it is seated, push the other
side home, engaging the teeth on the holder with the
threads on the worm shaft.

Figure 10 – Camera Removal

30

8. It may be necessary to adjust the holder position back
to its initial position as previously noted (Step 1).

3.1 CAMERA CALIBRATION
Calibration is done as part of initial drive for service
cameras. It may take up to 20 minutes of driving above
25 mph (40 kph) on well-marked roads in clear weather for
the camera to be ready and fully calibrated. The camera
should not be returned for any calibration faults found in
this time period. If a calibration fault appears while driving,
check the camera for looseness or misalignment and
continue driving to clear the fault.

3.2 DASH SWITCH/LAMPS
Each OEM has their own method for displaying the system
status to the driver, and there will typically will be a switch
on the dash to allow the driver to temporarily disable the
system. Refer to the OEM Operator’s Manual for system
indicator lamp(s) used for the FLC-25 camera, and whether
there is a bulb-check illumination at vehicle power-up.
Additionally, the system self-monitors and will set a DTC
that will typically alert the driver using a similar icon on
the dash display or by a status lamp. Refer to Section 2.0:
Troubleshooting for more information.

3.3 MAINTENANCE
In normal use, the FLC-25 camera needs only a clean,
properly maintained windshield to ensure a clear view of
the road ahead. Protect the camera lens whenever the
inside of the windshield is cleaned.

3.4 CAMERA INTERCHANGEABILITY

Figure 12 – Worm Shaft Adjustment

When replacing cameras only, use replacements with the
same part number (or a direct superseding replacement
number supplied by Bendix). After replacing the camera,
run the engine for two (2) minutes and verify no faults are
present. Once confirmed no faults are shown with the
engine running, drive the vehicle for 5-20 miles (8-32 km)
or until the camera calibration fault is no longer indicated.

Cameras of different vehicle models and model
years must not be interchanged. The use of an
incorrect camera can lead to DTCs being set, and
performance degradation – including unnecessary
system interventions and the potential for situations
where interventions do not occur when they would
normally.
Cameras are designed specifically for a particular
vehicle and model. DTCs caused by relocating cameras
to an incorrect vehicle may result in the vehicle system
using the camera to be partially or fully unavailable.
31

TECHNICAL ASSISTANCE
For additional assistance, the Bendix Tech Team can be
reached by email at techteam@bendix.com or by phone
at 1-800-AIR-BRAKE (1-800-247-2725), option 2. Bendix
Tech Team representatives are available Monday through
Thursday, 8:00 a.m. – 6:00 p.m., and Friday, 8:00 a.m. –
5:00 p.m. ET.

24/7/365 ACCESS
FULL SERVICE AT YOUR FINGERTIPS

1-800-AIR-BRAKE (1-800-247-2725)
TECHTEAM@BENDIX.COM

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SAFETYDIRECT is a trademark of RAND MCNALLY.
The trademarks are the property of their respective companies.
Unless otherwise indicated, the trademarks used in this document, including Bendix, are United States trademarks
owned by, or licensed to, Bendix Commercial Vehicle Systems LLC.

32

SD-29-50024 Rev 000 © 2/2025 Bendix Commercial Vehicle Systems LLC, a member of Knorr-Bremse • All Rights Reserved