4
Knorr-Bremse Group
PD-203-500
Doc. No. Y250905 (EN - Rev. 000)
July 2016
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KB4TA D System Overview
P r o d u c t D a t a
Configuration of the KB4TA D ECU
ABS Auto Configuration
When manufactured the KB4TA D ECU has a default ABS configuration of 2S/2M. If the ABS configuration has not
been manually set using the diagnostic tool ECU
talk
®
then, at power up, if the KB4TA D detects additional sensors
it will perform an auto-configuration. An auto-configuration only adjusts upward (e.g. from 2S/2M to 4S/2M).
A
configuration will not be accepted if a wheel speed signal is generated at the time of configuration
.
A 4S/3M configuration cannot be realised automatically, this requires manual configuration with the diagnostic tool
ECU
talk
®
.
ABS manual Configuration
Depending upon the required ABS configuration it may be necessary to use the diagnostic tool ECU
talk
®
to manually
configure the KB4TA D ECU, i.e. 4S/3M ABS configuration.
Once manually configured, the KB4TA D ECU will no longer auto-configure, unless the “Reset ABS Configuration”
option is used in the diagnostic tool ECU
talk
®
.
Auxiliary Configuration
The KB4TA D ECU supports the configuration of auxiliary functions on AUXIO1 and AUXIO2 using the diagnostic
tool ECU
talk
®
. However, the associated pins can only be configured as AUXIO if they are not already configured as
4S/3M and stop lamp power respectively.
Non Standard Tyre Sizes
The KB4TA D ECU allows for tyre rolling radius and sensing ring tooth count parameters to be set for each axle
using a diagnostic tool ECU
talk
®
. This setting is necessary for the ECU to accurately calculate the vehicle speed
and determine the odometer mileage. Wheels of the same axle must be set to the same rolling radius and sensing
ring tooth count. In most cases, these parameters are set by the trailer OEM and do not need to be adjusted. In the
case of a service replacement unit, always check that these parameters are set to match the vehicle. Refer to the
manufacturer’s tyre specification for correct values. Sensing ring tooth count is defaulted to 100 teeth, but can be
adjusted between 60 and 120 teeth.
Y026787: 006: EN: Released: Fri Nov 11 11:18:50 CET 2016:
