Bendix Commercial Vehicle Systems TABS-6 ADVANCED SINGLE CHANNEL - Manual (Page 33)

33
1. Check that the Electronic Control Unit (ECU) is installed correctly (expected orientation to vehicle).
Each Bendix
® TABS‑6 ™ Advanced ECU comes preconfigured for a certain orientation (0/90/180/270 degrees from
the vehicle driving direction). See the Figure below. Use Bendix ® ACom ® Diagnostics software to view the current
configured orientation of the Bendix TABS-6 Advanced ECU on the controller configuration screen. Then use the
Figure below to verify that the TABS-6 Advanced ECU is installed per the configured orientation. If it is determined
that the ECU is not installed per the configured orientation, then verify that the configured orientation is correct for
the part number of the ECU. This will require contacting a Bendix representative at 1-800-AIR-BRAKE (1-800-247-
2725). If the configured orientation matches the orientation for the specific ECU part number then reinstall the ECU
to match the configured orientation. After reinstalling the ECU for the correct orientation perform an End-of-Line Test
(installation test) using Bendix ACom Diagnostic software or a Bendix ® Trailer Information Module.
If the configured orientation of the ECU does not match the orientation for the specific part number, it is possible
that the configured orientation was manually configured using Bendix ACom Diagnostic software at a previous date.
If possible, change the configured orientation back to the correct orientation for the given part number. This may
require assistance from a Bendix representative at 1-800-AIR-BRAKE (1-800-247-2725). After reconfiguring the
orientation of the ECU, reinstall per the new orientation if required. Perform an End-of-Line Test (installation test).
2. Check if the wheel speed sensors SC and SD are swapped.
Since this Diagnostic Trouble Code (DTC) is caused by the ECU comparing the difference in wheel speed readings
between left and right wheel speed sensors to cross‑check with the on‑board lateral accelerometer’s data, if the
sensors are reversed, a DTC can be triggered. The correct installation location of wheel speed sensors SC and SD
are specific to the ECU’s orientation. Each TABS-6 Advanced ECU comes preconfigured for a certain orientation.
Use Bendix ACom Diagnostics software to view the orientation on the controller configuration screen. Then use
the Figure below to verify the correct installation of wheel speed sensors for this orientation. Use Bendix ACom
Diagnostics software to run the TABS-6 Advanced End-of-Line Test (installation test) to verify if the installation of
wheel speed sensors SC and SD is correct.
SECTION G: TROUBLESHOOTING THE ECU AND WHEEL SPEED SENSOR
(Note: The indicator lamp for this condition is illuminated only after the vehicle moves.)
Turn off the power to the module.
TA
BS
AD
V
TABS
ADV
TA
BS
AD
V
TABS
ADV
Right - “Curb Side”