2003 SSANGYONG MUSSO brake sensor

POWER BOOSTER 4C-3
Removal & Installation Procedure
1. Remove the oil level sensor connector.
2. Remove the tube from the master cylinder.Installation Notice Notice
Be careful not to drop the oil when removing the tube.
If the oil is dropped, promptly sweep up.
3. Remove the booster vacuum hose. Notice
Connect fully to the end of vacuum hose when installing.
4. Loosen the nut of master cylinder. Installation Notice
5. Remove the clevis pin and disconnect the pedal and brake booster push rod. Notice
Install in the upper hole when PBR brake.
Connect the snap pin in the hole of clevis pin fully.
Apply the grease around the hole of clevis pin.
Tightening Torque 14 - 22 Nm
Tightening Torque 15 - 19 Nm

FRONT DISC BRAKES 4D-3
Removal & Installation Procedure
1. MANDO Brake
Tightening Torque 25 - 35 Nm
2. PBR Brake Remove the eye-hose bolt and disconnect the hose. Installation Notice
Tightening Torque 15 - 18 Nm
3. Remove the wheel speed sensor (for ABS vehicies). Installation Notice
Tightening Torque 6 - 8 Nm
4. Remove the mounting bolts and then caliper assembly. Installation Notice
Tightening Torque 85 - 105 Nm
Remove the hose mounting nut and disconnect the hose. Installation Notice

FrontRear
Front Rear
SECTION 4F
ANTILOCK BRAKE SYSTEM
TABLE OF CONTENTS
Caution: Disconnect the negative battery cable before removing or installing any electrical unit or when a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting thiscable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCKunless otherwise noted.
SPECIFICATIONS
GENERAL SPECIFICATIONS
Application Model
ECUNumber of Pins
Operating TemperatureMotor Operating CurrentSolenoid Coil Resistance External Resistance Air Gap
Number of teeth Description
ABS 5.3 31
-40 ~ +120 °C
Below MAX 40A
1.28K - 1.92K
0.35 - 1.60 mm 0.15 - 1.20 mm 52 52 ABS/ABD 5.3
83
-40 ~ +85 °C
Below MAX 45A
8.04 - 9.04 except AV,
HSV 4.04 - 4.54
1.28K - 1.92K
0.35 - 1.60 mm 0.15 - 1.20 mm
52 52
Hydraulic System
Wheel Speed Sensor Impulse Ring
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 4F-1
General Specifications . . . . . . . . . . . . . . . . . . 4F-1
Schematic and Routing Diagrams . . . . . . . . 4F-2 ABS 5.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4F-2
ABS/ABD 5.0 . . . . . . . . . . . . . . . . . . . . . . . . . 4F-3
ABS 5.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4F-4
ABS/ABD 5.3 . . . . . . . . . . . . . . . . . . . . . . . . . 4F-5
Component Locator . . . . . . . . . . . . . . . . . . . 4F-6 ABS, ABS/ABD . . . . . . . . . . . . . . . . . . . . . . . . 4F-6
ABD System Description . . . . . . . . . . . . . . . 4F-7 Self Diagnosis . . . . . . . . . . . . . . . . . . . . . . . 4F-9
ABS, ABS/ABD 5.3 . . . . . . . . . . . . . . . . . . . . . 4F-9
ABS, ABS/ABD 5.0 . . . . . . . . . . . . . . . . . . . . 4F-11
Defect Codes . . . . . . . . . . . . . . . . . . . . . . . . 4F-13
Maintenance and Repair . . . . . . . . . . . . . . 4F-19
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . 4F-19
Wheel Speed Sensor . . . . . . . . . . . . . . . . . . 4F-19
Hydraulic Circuit . . . . . . . . . . . . . . . . . . . . 4F-21 ABS 5.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4F-21
ABS/ABD 5.3 . . . . . . . . . . . . . . . . . . . . . . . . 4F-24

4F-6 ANTILOCK BRAKE SYSTEM
ABS,ABS/ABD
COMPONENT LOCATOR
1 ABS Hydraulic Unit
2 ABS/ABD Hydraulic Unit
3 Diagnosis Socket
4 Front Wheel Speed Sensor
5 Front Impulse Ring 6 Rear Wheel Speed Sensor
7 Rear Impulse Ring
8 ABS Warning Indicator Light
9 TCS Indicator Light
1 0 ABS/ABD ECU

ANTILOCK BRAKE SYSTEM 4F-13
DEFECT CODES
Description
- Replace the ECU
Check resistance of the wheel speed sensor :1.280K - 1.920K
Check wire for ground and open.
Replace the sensor.
Check resistance of the wheel speed sensor :1.280K - 1.920K
Check wire for ground and open.
Replace the sensor.
Check resistance of the wheel speed sensor :1.280K - 1.920K
Check wire for ground and open.
Replace the sensor.
Check resistance of the wheel speed sensor : 1.280K - 1.920K
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 wheelspeed sensor and check installation of wheel tooth.(Standard air gap : 0.35 - 1.60 mm)
Check output voltage of the sensor by rotating thewheel 1/2 - 1 revolution per second and shaking sen- sor wire.
Defect Code
01 0203 0405 06 07 08 Application
Normal Defective ECUFront/left Wheel SpeedSensor (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 wheelspeed sensor and check installation of wheel tooth.(Standard air gap : 0.15 - 1.20 mm)
Check output voltage of the sensor by rotating thewheel 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 itscondition.
- 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
09 10
11
12 Application
Rear/left Wheel Speed Sensor (Signal) Rear/right Wheel Speed Sensor (Signal) Wheel Rotor
Valve Relay

4F-16 ANTILOCK BRAKE SYSTEM
Description
Check terminals for open or short. (When connector is removed)
Replace the hydraulic modulator.
Check each valve by using SCANNER's solenoid valve overriding function.
Check connection of connector and terminals in the
ECU hydraulic modulator.
Check terminals for open or short. (When connector is removed)
Replace the hydraulic modulator
Check solenoid internal resistance of the prime(ASV) valve and pilot valve(USV) : 8.04 - 9.04
Check each valve by using SCANNER's solenoid valve overriding function.
Check connection of connector and terminals in the
ECU and hydraulic modulator.
Check terminals for open or short.(When connector is removed)
Replace the hydraulic modulator
Check solenoid internal resistance of the prime(ASV)valve and pilot valve(USV) : 8.04 - 9.04
Check each valve by using SCANNER's solenoid valveoverriding function.
Check connection of connector and terminals in the
ECU and hydraulic modulator.
Check terminals for open or short.(When connector is removed)
Replace the hydraulic modulator
Check each valve by using SCANNER's pump motoroverriding function.
Check resistance between pump motor ground ter-minal and battery negative terminal : total resistanceshould be less than 15 m
Check body ground location.
Check relay supply voltage : IGN on : 11 - 14 V
Relay coil internal resistance : 70 - 80
Replace the hydraulic modulator
Check by using SCANNER's stop lamp switch diag-nosing function from sensor value output function.
Check connection of ECU connector side stop lamp switch terminal.
Check resistance of the stop lamp, switch.
- Each end resistance value of the switch
Application
Rear / Right OUTLET Valve Function and Response of The
Valve Function and Response of The
Valve Motor Relay / Circulation Pump Stop Lamp SwitchDefect Code
20 21 2224 27

ANTILOCK BRAKE SYSTEM 4F-17
Application
Power Voltage
Residual Temperature Measurement (ABD only) Acceleration Sensor Signal (wire)Defect Code
28 29 42Description
when switch knob (planger) is pressed by 3mm :
- Each ends resistance value of the switch when switch knob(plunger) is not pressed : less than 200 m
When brake is applied :
ECU (ABS:No.14, ABD:No.48) terminal 11 - 14 V
or VBattery.When brake is released : ECU (ABS:No.14, ABD:No.48) terminal 0 V
Check battery voltage.
Resistance between ECU (ABD:No.28 & 29,
ABS:No.19) pins and battery negative terminal :
less than 20 m
Resistance between ECU No.1 (ABS:NO.15) pin and
ignition terminal : less than 60 m
Check that normal voltage is applied to ECU
(ABD:No.1, ABS:No.15) pin when ignition switch is turned to "ON" or "OFF".
Check ABS fuses of 15A and 80A.
Replace the ECU.
Check wire (ECU No.50) for open or loose contact.
Check connection between connectors.
Check relevant wires for open or short.(When connector is removed)
Check voltage between ECU side ground (ABD:No.1,
ABS:No.15 pin) and acceleration sensor side ground(ABD:No.1, ABS:No.15 pin / ECU side ABD:No.39, ABS:No.30 pin)
(When connector is installed and power is applied)
- Voltage : less than 0.25 V
Check voltage among related terminals.(When connector is installed and power is applied)
- Voltage between ECU (ABD:No.43, ABS:No.28 pin
and ABD:No.39, ABS:No.30 pin) : 4.75 - 5.25 V
- Signal voltage between ECU (ABD:No.51, ABS:No.10) pin and (ABD:No.39, ABS:No.30) pin : 1.95 V - 3.45 V
(Measure it by laying acceleration sensor horizon- tally and without external force)