BENDIX M-40QR Service Data - Page 8

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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.

GLOSSARY

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.

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