Nominal Voltage Nominal Current

1

Module Power

14V/28V (9~32V)

2

Not Used

—

—

3

J1939 Low

2.1-2.4V

85mA

4

J1939 High

2.6-2.9V

85mA

5

Not Used

—

—

6

Private Communications Low

5V

85mA

7

Private Communications High

5V

85mA

8

Ground GND (-)

0.000V

200mA/100mA

9

Ignition Wake-Up

14V/28V (9~32V)

20mA/10mA

Table 1 – Harness Connector Pins

6

200mA/100mA

2.6 SERIAL DATA (PRIVATE
COMMUNICATIONS)
TROUBLESHOOTING PROCEDURE
The Bendix™ FLC-20™ camera requires private network
messages to and from the Bendix 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-61-4963, Bendix® Fusion™ FLR-21™
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 sensor 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
diagnostic trouble codes 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. If the connector terminals are corroded, this may be
an indication of water intrusion into the wiring system
and possibly the camera sensor. Replacement of the
entire harness is recommended. If the terminals of the
camera sensor are corroded, replacement of the sensor
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
FLC-20 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
between harness pins 6 and 7. The reading should be
approximately 120 ohms. If it is not, the vehicle wiring
should be investigated.

2.7 P OWER TROUBLESHOOTING
PROCEDURES
1. U
nplug the camera. With the ignition switch ON, using
a multimeter, measure the voltage between harness
pin 9 and ground. The measurement should indicate
10 to 16 VDC (Volts DC). If this is not the case, the
vehicle wiring should be investigated using procedures
described by the manufacturer.
2. U
nplug the camera. With the camera ignition switch
OFF, using a multimeter, measure the voltage between
harness pin 9 and ground. The measurement should
indicate zero VDC. If this is not the case, the vehicle
wiring should be investigated using procedures
described by the manufacturer.
3. U
nplug the camera. With the ignition switch OFF, using
a multimeter, measure the voltage between harness
pin 1 and ground. The measurement should indicate
10 to 16 VDC. If this is not the case, the vehicle wiring
should be investigated using procedures described by
the manufacturer.
If the connector terminals are corroded or damaged, this
may be an indication of water intrusion into the wiring
system and possibly into the sensor. Replacement of
the entire harness is recommended. If the terminals of
the sensor are corroded, replacement of the sensor is
recommended.
4. C
heck for other J1939 devices which may be inhibiting
J1939 communication. The service technician should
consult the vehicle manufacturer’s procedures for
other J1939 troubleshooting procedures. 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 J1939 HIGH or J1939 LOW
input circuits.
5. U
nplug the camera harness. With the camera ignition
OFF, measure the resistance (ohms) using a multimeter
between harness pins 3 and 4. The reading should
be approximately 60 ohms. If this is not the case, the
vehicle wiring should be investigated.
7

2.8 COMMUNICATIONS (J1939)
TEST AND TROUBLESHOOTING
PROCEDURES
NOTE: Confirm there are no DTCs on other components.
If there are active DTCs, they should be addressed prior to
performing additional troubleshooting procedures.
The FLC-20 camera requires several J1939 messages
from various ECUs. The camera will set a DTC if one of the
messages from one of the expected ECUs is not present.
Go to the Service Data Sheet listed below for the particular
ECU for full troubleshooting information.
Reference Documents:
• Bendix® Fusion™ FLR-21™ Radar Sensor (SD‑61‑4963)
• Bendix® ESP® EC-80™ Controller (SD‑13‑4986)
• SafetyDirect® by Rand McNally® Web Portal
Processor (SD-65-21025)
• Bendix® Fusion™ FLR-25™ Radar Sensor
(SD-29-50022)
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 sensor that is greater than the
dimension of the mating connector. Damaged connector
pins will require the replacement of the harness.
2. Check for damaged or reversed J1939 wiring.
If the J1939 HIGH, or J1939 LOW, wiring circuits are
damaged, such as shorting together, the entire J1939
link will be lost. The problem may be intermittent,
enabling the J1939 link to operate normally sometimes.
If this occurs, multiple diagnostic trouble codes will
be logged in multiple engine and vehicle controllers.
If the J1939 HIGH, and J1939 LOW, wiring circuits are
reversed, communication over the entire J1939 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 poorly-crimped, corroded, contaminated, or
damaged wiring connector problems such as opens or
shorts to voltage or ground.

8

3.0 TYPICAL INSTALLATION
The Bendix FLC-20 camera is installed on the windshield at a position determined by Bendix engineering and the OEM.
See Figure 7 and refer to Table 2 for cameras mounted from the top of the windshield. See Figure 8 and refer to Table
3 for cameras mounted from the bottom of the windshield.
NOTE: When replacing a camera bracket, temporarily mark the location of the top of the original bracket to help position
the replacement.

IMPORTANT
Use only Bendix-approved windshield adhesive when re‑mounting a camera bracket (included with the bracket kit).
Bendix recommends replacing the bracket if the bracket and camera have been dislodged from the windshield.

TOP AND CENTER OF WINDSHIELD
VIEWED FROM INSIDE

TOP AND OFFSET OF CENTER OF WINDSHIELD
VIEWED FROM INSIDE

A

A small “Torpedo” Level is used to
make sure the top of the bracket
is level. The torpedo level has an
angular tolerance of +/-1º

A

the windshield

Center line of

the windshield

Center line of

B

NOTE: Kenworth® T680/880 and Peterbilt®
579/567 models do not have a rubber seal.
Measure down (at the center line mark) from
where the printed “frit” pattern’s solid black
part ends.

A

the windshield

B

Center line of

A

the windshield

Center
Line Mark

Center line of

SPECIAL NOTES FOR DISTANCE “A”

NOTE: International® vehicles (except HX®
Series models) must measure Distance “A”
from the bottom edge of the lower black trim
at the top of the windshield.
Refer to Table 2.

Figure 7 – Bracket Installation Coordinates from Top of Windshield

9

Camera Mounting from the Top of the Windshield
Vehicle OEM*

Vehicle
Model

Distance “A”

Distance “B”

Comments

T280, T380,
T480, T680,
T880, W990

1.4 in. + 1/8 in.
(35 mm + 3 mm)

0

Windshields have a mark at the center line. The camera
bracket is located Distance “A” downward from the
lower edge of the printed border.

T370

2.38 in. + 1/8 in.
(60.3 mm + 3 mm)

6 in. + 1/8 in.
(152 mm + 3 mm)

The camera bracket is offset to the passenger’s side
of the vehicle by Distance “B” from the center of the
windshield. The camera bracket is located Distance
“A” downward from the interior seal of the windscreen.

CHU / CXU

2 in. + 1/8 in.
(51 mm + 3 mm)

6 in. + 1/8 in.
(152 mm + 3 mm)

The camera bracket is offset to the passenger’s side
of the vehicle by Distance “B” from the center. The
camera bracket is located Distance “A” downward from
the lower edge of the rubber seal.

HX® Series

1.97 in. + 3/16 in.
(50 mm + 5 mm)

5.9 in. + 3/16 in.
(150 mm + 5 mm)

Kenworth®

Mack

®

International®

International®
IC Bus™

Peterbilt®

Volvo®

FCCC

ProStar®,
LT® Series,
RH™ Series,
LoneStar®,
DuraStar®

1.26 in. + 3/8 in.
(32 + 10 mm)

5.9 in. + 3/16 in.
(150 mm + 5 mm)

CE Series

7.125 in. + 1/8 in.
(180 mm + 3 mm)

6 in. + 1/8 in.
(152 mm + 3 mm)

The camera bracket is offset to the passenger’s side
of the vehicle by Distance “B” from the center of the
windshield. The camera bracket is located Distance
“A” downward from the bottom edge of the inner black
trim at the top of the windshield.

536, 537,
548, 579,
567

1.4 in. + 1/8 in.
(35 mm + 3 mm)

0

Windshields have a mark at the center line. The vertical
location is between the bracket’s uppermost surface
and the nearest surface of the windscreen seal. The
camera bracket is located Distance “A” downward from
the lower edge of the printed border.

337, 348

1.18 in. + 1/8 in.
(30 mm + 3 mm)

0

The camera bracket is located Distance “A” downward
from the bottom of the windscreen seal.

520

8.625 in. + 1/8 in.
(219 mm + 3 mm)

6 in. + 1/8 in.
(152 mm + 3 mm)

The camera bracket is offset to the passenger’s side
of the vehicle by Distance “B” from the center of the
windshield. The camera bracket is located at Distance
“A” from the interior upper seal of the windscreen.

VNM / VNL

1.3 in. + 1/8 in.
(34 mm + 3 mm)

0

Utilimaster

19.5 in. + 1/8 in.
(495 mm + 3 mm)

5.3 in. + 1/8 in.
(135 mm + 3 mm)

The camera bracket is located Distance “A”
downward from the lower edge of the rubber seal.
The camera bracket is positioned Distance “A” below
the upper edge of the aluminum windshield support,
measured to the top of the camera bracket. Distance
“B” is measured from the vehicle’s vertical center line
to the center plane of the camera bracket.