Glossary – Bendix Commercial Vehicle Systems M-40HF PMV SD User Manual
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SD-13-4958 © 2014 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group. 12/14. 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.
ESP — Electronic Stability Program. Full stability function that
includes RSP & YC subfunctions.
Diagnostic Trouble Code — 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.
YC — Yaw Control. Helps stabilize rotational dynamics of vehicle.
YRS — Yaw Rate Sensor.