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SsangYong Musso. Manual - part 451

ANTILOCK BRAKE SYSTEM 4F-11

ABS, ABS/ABD 5.0

Initializing

1. Set the ignition switch n “ON” position.

2. Connect the No.1 terminal (Ground) and the No.13 (ABS)

from diagnosis socket located in E/G room by use of service
connector for 3 - 4 seconds and initialize the flash code.

Notice

Be careful not to connect over 5 seconds.

3. ABS indicator warning light continuously comes on until the

ignition switch is “OFF”.

Dignosis Table

1. When the system is normal

One pulse (normal code 01) indicates.

2. When the system is abnormal

One pulse (defect code) indicates.

Notice

Repeat the initializing procedure when checking the

defect code Defect code is indicated once for 1 sec (light
on : 0.75 sec, light off : 0.25 sec).

Removal the Defect Code

1. Repair the defect code and remove the memorized defect

code in the ECU.

2. Connect the No. 13 terminal (ABS) from diagnosis socket

and No. 1 terminal (ground) for over 5 seconds.

3. Set the ignition switch in the “OFF” position.

Notice

Defect code will be memorized in ECU unless the defect
code is not removed.

Repeat the initializing procedure and check the other
defects.

4F-12 ANTILOCK BRAKE SYSTEM

Diagnosis the Flash Code

[ex]

Time differences of nromal code 01 : TW1<T<Te<TW2

Time differences of fault code 15 : TW1<T<Te<TW2

Time Characteristics

1. Initialization

Tba < 5.0 sec.

Tba 1.8 - 2.2 sec.

2. Output of fault code

TW1 = 1.8 - 2.2 sec.

TW2 = 1.8 - 2.2 sec.

T = 0.75 sec., Te

≥

0.25 sec.

3. Elimination of fault code

Tb1 = 5.0 sec.

ANTILOCK BRAKE SYSTEM 4F-13

DEFECT CODES

Description

Replace the ECU

Check resistance of the wheel speed sensor :

1.280K

Ω

- 1.920K

Ω

Check wire for ground and open.

Replace the sensor.

Check resistance of the wheel speed sensor :

1.280K

Ω

- 1.920K

Ω

Check wire for ground and open.

Replace the sensor.

Check resistance of the wheel speed sensor :

1.280K

Ω

- 1.920K

Ω

Check wire for ground and open.

Replace the sensor.

Check resistance of the wheel speed sensor :

1.280K

Ω

- 1.920K

Ω

Check wire for ground and open.

Replace the sensor.

Check wire for ground and open.

Check connection of the wheel speed sensor connec-

tor and ECU side connector.

Measure air gap between wheel teeth and wheel speed

sensor and check installation of wheel tooth.

(Standard air gap : 0.35 - 1.60 mm)

Check output voltage of the sensor by rotating the

wheel 1/2 - 1 revolution per second and shaking sen-

sor wire.

When measured by multi - meter (AC) :

output voltage > 70 mV

When measured in oscilloscope :

output voltage

≥

120 mV/P-P

Replace the sensor.

Check wire for ground and open.

Check connection of the wheel speed sensor. con-

nector and ECU side connector.

Measure the air gap between wheel teeth and wheel

speed sensor and check installation of wheel tooth.

(Standard air gap : 0.35 - 1.60 mm)

Check output voltage of the sensor by rotating the

wheel 1/2 - 1 revolution per second and shaking sen-

sor wire.

Defect Code

Application

Normal

Defective ECU

Front/left Wheel Speed

Sensor (Wire)

Front/right Wheel Speed

Sensor (Wire)

Rear/left Wheel Speed

Sensor (Wire)

Rear/right Wheel Speed

Sensor (Wire)

Front/left Wheel Speed

Sensor (Signal)

Front/right Wheel Speed

Sensor (Signal)

4F-14 ANTILOCK BRAKE SYSTEM

Description

When measured by multi - meter (AC) :

output voltage > 70 mV

When measured in oscilloscope :

output voltage

≥

120 mV/P-P

Replace the sensor.

Check wire for ground and open.

Check connection of the wheel speed sensor con-

nector and ECU side connector.

(Standard air gap : 0.15 - 1.20 mm)

Check output voltage of the sensor by rotating the

wheel 1/2 - 1 revolution per second and shaking sen-

sor wire.

When measured by multi - meter (AC) :

output voltage > 70 mV

When measured in oscilloscope :

output voltage

≥

120 mV/P-P

Replace the sensor.

Check wire for ground and open.

Check connection of the wheel speed sensor con-

nector and ECU side connector.

Measure air gap between wheel teeth and wheel

speed sensor and check installation of wheel tooth.

(Standard air gap : 0.15 - 1.20 mm)

Check output voltage of the sensor by rotating the

wheel 1/2 - 1 revolution per second and shaking sen-

sor wire.

When measured by multi - meter (AC) :

output voltage > 70 mV

When measured in oscilloscope :

output voltage

≥

120 mV/P-P

Replace the sensor.

Check number of teeth on the wheel rotor and its

condition.

Number of teeth : 52

Check valve relay voltage.

Check connection of connector and terminals in the

ECU and hydraulic modulator.

Check ground.

Check terminals for open or short.

(When connector is removed)

Replace the hydraulic modulator.

Defect Code

Application

Rear/left Wheel Speed

Sensor (Signal)

Rear/right Wheel Speed

Sensor (Signal)

Wheel Rotor

Valve Relay

Content .. 449 450 451 452 ..