SsangYong Musso. Manual — part 452
ANTILOCK BRAKE SYSTEM 4F-15
Description
!
Check each valve by using SCANNER's solenoid valve
overriding function.
!
Check connection of connector and terminals in the
ECU 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 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 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 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 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 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.
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
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
Ω
!
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
Ω
!
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 each valve by using SCANNER's pump motor
overriding function.
!
Check resistance between pump motor ground ter-
minal and battery negative terminal : total resistance
should be less than 15 m
Ω
!
Check body ground location.
!
Check relay supply voltage : IGN on : 11 - 14 V
!
Relay coil internal resistance : 70 - 80
Ω
!
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 Switch
Defect Code
20
21
22
24
27
ANTILOCK BRAKE SYSTEM 4F-17
Application
Power Voltage
Residual Temperature
Measurement (ABD only)
Acceleration Sensor Signal (wire)
Defect Code
28
29
42
Description
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
Ω
!
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
Ω
!
Resistance between ECU No.1 (ABS:NO.15) pin and
ignition terminal : less than 60 m
Ω
!
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)
4F-18 ANTILOCK BRAKE SYSTEM
Application
Defect Code
Description
!
Check connection between connectors.
!
Check relevant wires for open or short.
(When connector is removed)
!
Check and replace the acceleration sensor.
!
Replace the ECU.
!
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.51, ABS:No.10
pin and ABD:No39, ABS:No.30) pin
: 4.75 - 5.25 V
-
Signal voltage between ECU (ABD:No.51,
ABS:No.10 pin and ABD:No39, ABS:No.30) pin
: 1.95 V - 3.45 V
(Measure it by laying acceleration sensor horizon
tally and without external force)
43
Acceleration Sensor Signal (Signal)
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