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SD-13-4958 Rev. 001 © 2018 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 10/18 • All Rights Reserved
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GLOSSARY
See the Service Data Sheet for the vehicle’s Electronic
Control Unit for more information.
ABS -
Antilock Brake System.
ABS Event -
Impending wheel lock situation that causes the
ABS controller to activate the modulator valve(s).
ABS Indicator Lamp -
An amber lamp which indicates the
operating status of an antilock system. When the indicator lamp
is on, ABS is disabled and the vehicle reverts to normal brake
operation.
ATC -
Automatic Traction Control. An additional ABS function
in which engine torque is controlled and brakes are applied
differentially to enhance vehicle traction.
ATC / ESP Lamp -
A lamp that indicates when stability functions,
including traction control, roll stability program, or yaw control
are operating.
ECU -
Electronic Control Unit.
ESC / ESP
®
-
Electronic Stability Program. Full stability system,
offering both roll and yaw stability to help provide loss of control
and rollover mitigation.
Diagnostic Trouble Code (DTC) -
A condition that interferes with
the generation or transmission of response or control signals in
the vehicle's ABS system that could lead to the functionality of
the ABS system becoming inoperable in whole or in part.
J1939 -
A high speed data link used for communications between
the ABS ECU engine, transmission, and retarders.
PMV -
Pressure Modulator Valve. An air valve which is used to
vent or block air to the brake chambers to limit or reduce brake
torque.
QR -
Quick Release. Quick release valves allow faster release
of air from the brake chamber after a brake application.
RSP -
Roll Stability Program. An all-axle ABS solution that helps
reduce vehicle speed by applying all vehicle brakes as needed,
reducing the tendency to roll over.
SAS -
Steering Angle Sensor.
TCV -
Traction Control Valve.
YC -
Yaw Control. Helps stabilize rotational dynamics of vehicle.
YRS -
Yaw Rate Sensor.
