SsangYong Korando III (2010 year). Manual - part 547

11-8

G-sensor (only for 4WD)

▶

For the vehicle with the ABS, a speed difference 

between the wheels is not noticeable as all the 

wheels are slipping during abrupt braking. 

Therefore, the vehicle needs the speed 

information from other sensors other than the 

wheel speed sensor. On the 2WD vehicle, there 

is not large difference between the vehicle speed 

reduction and actual wheel speed reduction in 

the event of braking since the driving wheels are 

in the front. So, the ABS HECU can control the 

vehicle, based on a calculation value. But, on the 

4WD vehicle, if a speed reduction occurs in the 

front or rear of the vehicle, it affects the other side 

wheel. In other words, braking the rear wheels 

induces also a large speed reduction in the front 

wheels. The longitudinal acceleration sensor is 

used for this case. It controls the ABS by using 

the signals from the sensor during abrupt braking 

and acceleration.

G-sensor

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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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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 the self-diagnosis is performing, the warning lamp comes on.

When the HECU connector is disconnected, the warning lamp comes on.

ABS is not available during lamp ON. In this condition, Only normal brake system without ABS function 

is available.

When the communication between warning lamp CAN module in meter cluster, the warning lamp 

comes on.

1.

2.

3.

4.

5.

6.

ABS warning lamp

Brake warning lamp

(EBD warning lamp: ABS warning lamp + Brake warning lamp)

1.

2.

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

EBD warning lamp 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 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 the self-diagnosis is performing, the warning lamp comes on.

When the HECU connector is disconnected, the warning lamp comes on.

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

simultaneously.

1.

2.

3.

4.

5.

6.

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 module in meter cluster, the warning lamp 

comes on.

7.