Glossary – Bendix Commercial Vehicle Systems M-40HF PMV SD User Manual

Page 8

BW2899

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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.

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