SsangYong Actyon Sports II. Service manual - part 148

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4892-01

Front wheel speed sensor 

(4WD)

Located on the hub assembly.

Front disc

Front caliper assembly 

(2WD/4WD)

Located on the knuckle.

ABS hydraulic device and control unit

Located near the brake booster in engine compartment.

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3. ABS CONTROL LOGIC

The principal ABS control logic is the determination of the reference speed by choosing one wheel 

meeting a certain condition, while sensing the speed information from 4 wheel speed sensors when the 

vehicle is being driven.

For example, when the comparison of the reference speed with front right wheel speed shows a slip, the 

control signal is determined according to whether it's deceleration or acceleration. If the control 

conditions are met, the brake for the front right wheel will be got under control.

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4892-01

4. WARNING LAMPS

1) ABS Warning Lamp

ABS warning lamp module indicates the self diagnosis and malfunction.

ABS warning lamp ON:

When turning the ignition switch to ON position, ABS warning lamp comes on for 3 seconds for 

self diagnosis and goes off if the system is OK (initialization mode).

When the system is defective, the warning lamp comes on.

When disengaging the connector, the warning lamp comes on.

ABS is not available during lamp ON. In this condition, Only the conventional brake system 

without ABS function is available.

When the communication between warning lamp CAN modules in meter cluster is failed, the 

warning lamp comes on.

A.

B.

C.

D.

E.

ABS warning lamp

(2)

Brake warning lamp

(EBD warning lamp: two indicators come 

on simultaneously)

(1)

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2) EBD (Electronic Brake-force Distribution) Warning Lamp 

EBD warning lamps (brake warning lamp and ABS warning lamp) come on when the system performs 

the self diagnosis and when it detects the malfunction of EBD system. However, the brake warning lamp 

comes on regardless of EBD system when the parking brake is applied.

EBD warning lamp ON:

When turning the ignition switch to ON position, ABS warning lamp and the brake warning lamp 

comes on for 3 seconds for self diagnosis and goes off if the system is OK (initialization mode).

When applying the parking brake, the brake warning lamp comes on.

When the brake fluid is not sufficient, the brake warning lamp comes on.

When disengaging the connector, the warning lamp comes on.

When the system is defective, ABS warning lamp and the brake warning lamp come on 

simultaneously.

A.

B.

C.

D.

E.

When the solenoid valve is defective

When one or more wheel sensors are defective

When ABS HECU is defective

When the voltage is abnormal

When valve relay is defective

a.

b.

c.

d.

e.

When the communication between warning lamp CAN modules in meter cluster is failed, the 

warning lamp comes on.

F.