1998 SSANGYONG MUSSO lock

4F-8 ANTILOCK BRAKE SYSTEM
Temperature Model:
ABD operation is a high thermal load for the brakes.
To avoid any damages at the brakes, the disk temperature is calculated with a mathematical model for each driven
wheel separately. After ignition on, the calculation starts with 30°C and then three different phases are evaluated
separately and added:
ABD operation, braking and coling phase.
If the temperature is highter than 500°C, ABD is disabled for this wheel.
It is permitted again, if the model has calculated down the 350°C.
Lamp Concepts:
The system is equipped with an ABD information lamp, which is blinking during ABD operation.
The activation of the EBD, ABS warning lamp and the ABD info lampo is summarized in the following table:
Ignition
ONABS
OperationABD
OperationSystem failure
(EBD,ABS or ABD are
not distinguished)ABD passive due
to temperature
model
ABS warning
lamp
ABD info
lamp
EBD warning
lamp2s on for lamp
check
2s on for lamp
check
2s on for lamp
checkOFF
EBD operation
/ OFFOFFOFF
Dlinking
(Flashing)
OFFON
OFF
ONOFF
OFF
OFF

ANTILOCK BRAKE SYSTEM 4F-9
SELF DIAGNOSIS
ABS, ABS/ABD 5.3
Initialization
1. Turn the ignition switch to "ON" position.
2. Using a service connector, ground the No.13 terminal of
diagnosis socket and No.1 ground terminal for 3 - 4 seconds.
Notice
If it is over 5 seconds, initialization will not be performed.
3. After completing the initialization, ABS warning lamp will be
turned on until the ignition switch is turned to "OFF" position.
Output of Fault Code
1. Normal : 1 pulse (normal code 01)
2. Abnormal : 1 pulse (fault code)
Notice
lIf appeared initial fault code and above 2 differnt fault
code, perform again initialization.
lFault code will be output the numbers of fault code with
a interval of 1 second.(turn on : 0.75 sec., turn off : 0.25
sec.)
Fault Code Elimination
After repairing the defect parts, eliminate the fault from ECU.
1. Ground the diagnosis No.13 terminal to No.1 ground terminal
for over 5 seconds.
2. Turn the igniotion switch to "OFF" position.
Notice
lIf not eliminate the fault code, the code will be maintained.
lCheck and find the other defect parts with performing
the imitialization again, if the fault code will be output,
repair the defect parts completely.

4F-10 ANTILOCK BRAKE SYSTEM
Diagnosis the Flash Code
[Ex]
lTime Differences of Normal Code 01 : TW1 lTime Differences of Fault Code 15 : TW1 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 ³ 0.25 sec.
3. Elimination of Fault Code
Tb1 = 5.0 sec.

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
lOne pulse (normal code 01) indicates.
2. When the system is abnormal
lOne 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
lDefect code will be memorized in ECU unless the defect
code is not removed.
lRepeat the initializing procedure and check the other
defects.

4F-12 ANTILOCK BRAKE SYSTEM
Diagnosis the Flash Code
[ex]
lTime differences of nromal code 01 : TW1 lTime differences of fault code 15 : TW1 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 ³ 0.25 sec.
3. Elimination of fault code
Tb1 = 5.0 sec.

ANTILOCK BRAKE SYSTEM 4F-13
DEFECT CODES
Description
-
Replace the ECU
lCheck resistance of the wheel speed sensor :
1.280KW - 1.920KW
lCheck wire for ground and open.
lReplace the sensor.
lCheck resistance of the wheel speed sensor :
1.280KW - 1.920KW
lCheck wire for ground and open.
lReplace the sensor.
lCheck resistance of the wheel speed sensor :
1.280KW - 1.920KW
lCheck wire for ground and open.
lReplace the sensor.
lCheck resistance of the wheel speed sensor :
1.280KW - 1.920KW
lCheck wire for ground and open.
lReplace the sensor.
lCheck wire for ground and open.
lCheck connection of the wheel speed sensor connec-
tor and ECU side connector.
lMeasure air gap between wheel teeth and wheel speed
sensor and check installation of wheel tooth.
(Standard air gap : 0.35 - 1.60 mm)
lCheck 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 ³ 120 mV/P-P
lReplace the sensor.
lCheck wire for ground and open.
lCheck connection of the wheel speed sensor. con-
nector and ECU side connector.
lMeasure the air gap between wheel teeth and wheel
speed sensor and check installation of wheel tooth.
(Standard air gap : 0.35 - 1.60 mm)
lCheck output voltage of the sensor by rotating the
wheel 1/2 - 1 revolution per second and shaking sen-
sor wire. Defect Code
01
02
03
04
05
06
07
08Application
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 ³ 120 mV/P-P
lReplace the sensor.
lCheck wire for ground and open.
lCheck connection of the wheel speed sensor con-
nector and ECU side connector.
(Standard air gap : 0.15 - 1.20 mm)
lCheck 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 ³ 120 mV/P-P
lReplace the sensor.
lCheck wire for ground and open.
lCheck connection of the wheel speed sensor con-
nector and ECU side connector.
lMeasure air gap between wheel teeth and wheel
speed sensor and check installation of wheel tooth.
(Standard air gap : 0.15 - 1.20 mm)
lCheck 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 ³ 120 mV/P-P
lReplace the sensor.
lCheck number of teeth on the wheel rotor and its
condition.
- Number of teeth : 52
lCheck valve relay voltage.
lCheck connection of connector and terminals in the
ECU and hydraulic modulator.
lCheck ground.
lCheck terminals for open or short.
(When connector is removed)
lReplace the hydraulic modulator. Defect Code
09
10
11
12Application
Rear/left Wheel Speed
Sensor (Signal)
Rear/right Wheel Speed
Sensor (Signal)
Wheel Rotor
Valve Relay

ANTILOCK BRAKE SYSTEM 4F-15
Description
lCheck each valve by using SCANNER's solenoid valve
overriding function.
lCheck connection of connector and terminals in the
ECU hydraulic modulator.
lCheck each valve by using SCANNER's solenoid valve
overriding function.
lCheck connection of connector and terminals in the
ECU hydraulic modulator.
lCheck terminals for open or short.
(When connector is removed)
lReplace the hydraulic modulator.
lCheck each valve by using SCANNER's solenoid valve
overriding function.
lCheck connection of connector and terminals in the
ECU hydraulic modulator.
lCheck terminals for open or short.
(When connector is removed)
lReplace the hydraulic modulator.
lCheck each valve by using SCANNER's solenoid valve
overriding function.
lCheck connection of connector and terminals in the
ECU hydraulic modulator.
lCheck terminals for open or short.
(When connector is removed)
lReplace the hydraulic modulator.
lCheck each valve by using SCANNER's solenoid valve
overriding function.
lCheck connection of connector and terminals in the
ECU hydraulic modulator.
lCheck terminals for open or short.
(When connector is removed)
lReplace the hydraulic modulator.
lCheck each valve by using SCANNER's solenoid valve
overriding function.
lCheck connection of connector and terminals in the
ECU hydraulic modulator.
lCheck terminals for open or short.
(When connector is removed)
lReplace the hydraulic modulator.
lCheck each valve by using SCANNER's solenoid valve
overriding function.
lCheck connection of connector and terminals in the
ECU hydraulic modulator.
lCheck terminals for open or short. Application
Front / left INLET Valve
Front / left OUTLET Valve
Front / right INLET Valve
Front / right OUTLET Valve
Rear / left INLET Valve (ABD)
Rear / left OUTLET Valve
Rear / Right INLET Valve
Defect Code
13
14
15
16
17
18
19