BENDIX BW2910 User Manual
Bendix® TABS-6™ Standard and Premium Trailer ABS Controller Checklist
• This checklist only takes a few minutes.
Follow all General Safety Guidelines (see back page.)
Front
of
Trailer
Step 1
What equipment does the trailer have?
Record the total of checked boxes:
Step 2
What Blink Code (BC) numbers are shown as active or intermittent?
______
c R. Front
Axle WSS
c Additional
Modulator
Valve?
c L. Front
Axle WSS
Wheel Speed Sensors (WSSs),
c R. Middle
Axle WSS
TABS -6
ABS
Controller
c L. Middle
Axle WSS
______
c R. Rear
Axle WSS
c Additional
Modulator
Valve?
c L. Rear
Axle WSS
Modulator Valves (MVs).
We recommend that you use a PC/laptop with associated RP1210 harne sses , etc . to conn ect to the trailer. The co mputer wi ll nee d the Ben dix®
ACom® Diagnostics software (version 6.5 and above). (For a free software download of Bendix ACom Diagnostics, visit www.bendix.com.)
Look up active and recurring/intermittent Diagnostic Trouble Codes (DTCs) and their equivalent BCs.
Record the active and recurring/intermittent BCs found using ACom Diagnostics here:
___________________________________
If a PC with ACom Diagnostics is not available, read the box below.
How to retrieve active DTCs, when ACom Diagnostics is not available:
1. Wait at least two seconds after switching the ignition ON.
2. Depress and release the stop lamp switch (or the brake pedal) three (3) times within 15 seconds after switching the ignition ON.
3. After a pause of ve (5) seconds, the ECU will begin responding with active Blink Codes (BCs).
For example, seven blinks... pause... two blinks = 7-2. There is a long pause before any further BCs.
To Obtain Inactive DTCs — Switch off and re- apply the ignition power. Then depress and release the stop lamp switch (or the brake pedal) four (4) times
within 15 seconds to display the BCs of all of the inactive diagnostic trouble codes.
Record the active and recurring/intermittent BCs found here:
Step 3
For each BC, use the table
to the right and find the
Blink Codes (BC)
recommended action code
to use. Open this document and follow
the troubleshooting checks for that code.
The actions shown will typically resolve
the issue.
See the Service Data Sheet for complete
troubleshooting information, and for any
other BCs not listed. Only go to Step 4
in cases where the troubleshooting
suggested, and any actions the technical
help line(s) recommend, do not resolve
the issue.
Bendix Technical Help
Line: 1-800-AIR-BRAKE
(1-800-247-2725), option 2-1,
Mon. - Fri., 8 a.m. - 6 p.m. ET.
1st code 2nd code
2 1-4 1 0-5 SL WSS Signal
3 1-4 2 0-5 SR WSS Signal
4 1-4, 6 3 0-5 , 13 SAL WSS Signal
5 1-4, 6 4 0-5 , 13 SAR WSS Signal
2 5 1 13 SL Tire Conguration
3 5 2 13 SR Tire Conguration
4 5 3 13 SAL Tire Conguration
5 5 4 13 SAR Tire Conguration
6 Any 251 3, 4, 13 Power
7 Any 42 3, 4, 5, 6, 12 Modulator 1 DTC
8 1-3 43 3, 4, 5, 6, 12 Modulator 2 DTC
9 1-3 44 3, 4, 5, 6, 12 Modulator 3 DTC
8 4 8 13 Modulator 2 Conguration Error
9 4 9 13 Modulator 3 Conguration Error
10 Any 1-7, 7-4, 7-7, 9-4 Modulator Common
11 Any 254 12, 13 Electronic Control Unit (ECU)
12 Any 250 3, 4, 5, 12 J1587 Diagnostic
13 Any 81 3, 4, 5, 12 Trailer-Mounted ABS Indicator Lamp
__________________________________________________________
Equivalent Diagnostic
Trouble Codes (DTCs)
SID
code
FMI code
Description
Open This
Document
and Take the
Action Code
Shown Below
Take Action Recommended in Step 3
Action
Code
Troubleshooting Checks To Make First
c Verify that the number of WSSs found in Step 1 match the stored conguration
c Verify that the sensor wiring has no visible damage or has no shorts to ground or battery
c Verify proper tire ination
c Check that the WSS’s face is touching the exciter ring/tone ring face
c Verify 950-1950 ohms across sensor leads. Reading: .............. ohms*,
c While turning the wheel at 0.5 revs/sec, verify a minimum of 0.25 AC volts across the sensor leads.
Reading: ........ volts*
Out of range? – go to the Bendix BW2453 WSS inspection guide
*
c Verify correct tire size as desired
c Verify proper tire ination
c Verify correct number of exciter ring teeth, on both sides of the axle
c Verify that the ECU has the proper tire size settings
c Ver i f y th a t th e wi r i n g an d co n n e c t i o n s ar e fr e e fro m damage
c Wit h igni tion po wer to the tr aile r, meas ure volta ge bet ween
the Ignition Power pin and the Ground pin of the ECU
harness connector. Repeat voltage measurement with
Brake La m p Power pin and Ground pin of the EC U ha r n e s s
connector. The operating range of the module is 8.0-16.0
VDC. Verify that voltage measurements are equal to
vehicle voltage at both ends of the harness.
Readings:
Ignition pin
Brake Lamp Power pin
_____
Vdc
_____
Vdc
(Incorrect? Then investigate the harnesses and connectors)
c If the proper voltage is measured at the ECU harness
connector, and no corrosion or damage is found on the
wiring connectors or ECU, then replace the module. Go
to Step 4.
Looking into
the system’s
main ECU wire
harness 18-Pin
connector
(Bendix®
TABS -6
Premium)
Pin 6 (Ignition Power), Pin 12 (Brake Lamp
Power), Pin 18 (Ground)
Looking into
the system’s
main ECU wire
harness 5-Pin
Connector
(TABS -6
Standard)
Pin B (Ignition Power)
Pin A (Brake Lamp Power) Pin E (Ground)
Then Do This
• Clear the Blink
Codes (BCs)
• Is the same BC
back?
c Yes – see the
Service Data sheet
Troubleshooting
section and/or
contact the Bendix
Tec h Team
(Looking
into the wire
harness
connector)
c If the BC is 7-1 or 7-2, clear the active BC and cycle the
power. Check the BC again, and if the same code is
returned, replace the module. Go to Step 4.
18- Pin
Connector
(TABS -6
Premium)
c Ch e ck th e fo l l o w i n g pi ns if the syste m is eq u i p p e d wi t h mo r e
than one modulator (Bendix TABS-6 Premium ECU only):
Pin 3 is MOD2 Common, Pin 4 is MOD3
• 3.0 to 8.0 Ohms across the Hold/Common connector pins
• 3.0 to 8.0 Ohms across the Exhaust/Common pins
• 6.0 to 16.0 Ohms across the Hold/Exhaust pins
Pin 9 is MOD2 exhaust, Pin 10 is MOD3
Pin 15 is MOD2 Hold, Pin 16 is MOD3
• No continuity should be measured from any modulator pin
to ground
• Vbat is not measured from any modulator connector pin
• Modulator/connector wiring and pins should not be damaged
or corroded
Looking into
Modulator
Connector
Pins:
Pin 1 (Release), Pin 2 (Common)
c Verify the correct ABS conguration using blink codes or other diagnostic tool(s).
If needed, reset to the default ABS conguration and power-up to initiate an auto-conguration.
c No – follow the
actions above for
any other remaining
BCs
Common
exhaust
Hold
Pin 3 (Hold)
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