SsangYong Actyon Sports II. Manual — part 139

09-4

2. SYSTEM OVERVIEW

1) Terms and Definition

CBS: Conventional Brake System

ABS: Anti-Lock Brake System

EBD: Electronic brake-Force Distribution

ESP: Electronic Stability Program

ABD: Automatic Braking Differential

ASR: Acceleration Slip Regulation

AYC: Active Yaw Control (Understeer and Oversteer Control)

HBA: Hydraulic Brake Assistant

ARP: Active Rollover Protection

HSA: Hill Start Assistant

Brake pad: Brake pad is a component of disk brakes used in automotive and other applications.

Brake pad is steel backing plates with friction material bound to the surface that faces the brake disc.

Brake disc: The brake disc is a device for slowing or stopping the rotation of a wheel while it is in

motion.

Brake caliper: To stop the wheel, friction material in the form of brake pads (mounted on a device

called a brake caliper) is forced hydraulically against both sides of the disc. Friction causes the disc

and attached wheel to slow or stop.

Brake master cylinder: The brake master cylinder is a control device that converts non-hydraulic

pressure (commonly from a driver's foot) into hydraulic pressure, in order to move other device(s)

which are located at the other end of the hydraulic system, such as one or more slave cylinders. As

piston(s) move along the bore of the master cylinder, this movement is transferred through the

hydraulic fluid, to result in a movement of the slave cylinder(s). The hydraulic pressure created by

moving a piston (inside the bore of the master cylinder) toward the slave cylinder(s) compresses the

fluid evenly, but by varying the comparative surface-area of the master cylinder and/or each slave

cylinder, one will vary the amount of force and displacement applied to each slave cylinder (relative to

the amount of force and displacement that was applied to the master cylinder).

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Function

Vehicle with CBS

Vehicle with ABS/EBD

Vehicle with ESP

ABS

Not applied

Applied

Applied

EBD

Applied

ABD

Not applied

ASR

AYC

HBA

ARP

2) Functions

09-5

4850-01

3) Parts Arrangement

Part name

Vehicle with

CBS

Vehicle with ABS/EBD

Vehicle with ESP

HECU

Not applied

Applied

Applied

Front wheel speed sensor

Rear wheel speed sensor

ABS warning lamp

EBD indicator

Longitudinal G sensor

2WD: N/A, 4WD: Applied

Not applied

Sensor cluster

(Yaw rate sensor,

lateral/longitudinal G sensor)

Not applied

Applied

ESP indicator

ESP OFF switch and warning

lamp

Steering wheel angle sensor

4) Components

ABS

ESP+ARP

2WD

4WD

2WD

4WD

Whhel speed sensor

4

4

4

4

Sensor cluster

N/A

N/A

Applied

Applied

G-sensor

N/A

Applied

N/A

N/A

2H G-sensor

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Operating

-

-

4H G-sensor

-

Operating

-

-

4L G-sensor

-

Operating

-

-

2H sensor cluster

-

-

Operating

Operating

4H sensor cluster

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-

Operating

Operating

4L sensor cluster

-

-

Operating

Operating

09-6

Lamp

Indicator/Warning Lamp

Description

EBD warning lamp

ON when EBD function is failed

ABS warning lamp

ON when ABS function is failed

ESP indicator

Blinking when ESP function is operating

ESP OFF indicator

ON when the ESP OFF switch is pressed

ESP warning lamp

ON when ESP function is failed

ESP buzzer

Sound when ESP function is operating

5) Indicators and Warning Lamps for ABS/ESP

09-7

4850-01

Problem

Possible Cause

Action

Noise or vehicle
vibration when applied

Incorrectly mounted back plate or caliper

Repair

Loosened bolt of back plate or caliper

Retighten

Uneven wear of brake disc

Replace

Brake pad contamination

Clean or replace

Sticking brake pad on contact surface

Replace

Wear or hardening of brake pad

Replace

Excessive clearance between caliper and pad

Repair

Uneven contact of pad

Repair

Lack of lubrication in sliding parts

Lubricate

Improper operation of caliper

Replace

Dust cover missing

Repair

Loosened suspension mounting bolt

Retighten

Pulls to one side when
braking

Unbalanced tire pressure between left and right

Adjust

Poor contact of brake pad

Repair

Oil or grease on brake pad

Replace

Scratch, uneven wear, distortion of brake disc

Replace

Improperly installed brake caliper

Repair

Improper operation of auto adjuster

Repair

Crack or distortion of brake pad

Replace

Poor braking

Oil leak or contamination

Repair or replace

Air in brake line

Bleed air

Improper operation of brake booster

Repair

Poor contact of brake pad

Repair

Oil or grease on brake pad

Replace

Improper operation of auto adjuster

Repair

Clogged brake line

Repair

Improper operation of proportioning valve

Repair

3. TROUBLESHOOTING