Daewoo Korando. Manual - part 236

ANTILOCK BRAKE SYSTEM  4F-13

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

W

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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

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Check battery voltage.

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Resistance between ECU (ABD:No.28 & 29,

ABS:No.19) pins and battery negative terminal :

less than 20 m

W

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Resistance between ECU No.1 (ABS:No.15) pin and

ignition terminal : less than 60 m

W

l

Check that normal voltage is applied to ECU

(ABD:No.1, ABS:No.15) pin when ignition switch is

turned to "ON" or "OFF".

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Check ABS fuses of 15A and 80A.

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Replace the ECU.

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Check wire (ECU No.50) for open or loose contact.

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Check connection between connectors.

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Check relevant wires for open or short.

(When connector is removed)

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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

l

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-14  ANTILOCK BRAKE SYSTEM

Application

Defect Code

Description

l

Check connection between connectors.

l

Check relevant wires for open or short.

(When connector is removed)

l

Check and replace the acceleration sensor.

l

Replace the ECU.

l

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

l

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)

ANTILOCK BRAKE SYSTEM  4F-15

MAINTENANCE AND REPAIR

ON-VEHICLE SERVICE

WHEEL SPEED SENSOR

1 Bolt
2 Front Wheel Speed Sensor
3 Knuckle

4 Bolt
5 Rear Wheel Speed Sensor
6 Rear Axle

4F-16  ANTILOCK BRAKE SYSTEM

Removal & Installation Procedure

ABS Hydraulic Unit

1. Release the ABS wiring connector locking lever in arrow

direction and remove the connector.

Notice

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Do not force the connector when releasing in arrow

direction.

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For installation of the connetor, align and  firmly seat

the connector of the hydraulic unit and wiring connector
while keeping the locking lever upward and then push it
down.

2. Remove the hydraulic lines of the hydraulic unit.

During removal, be careful not to drip brake fuid on the
body.

Installation Notice

3. Unscrew hydraulic unit mounting nuts (2EA) and remove

the unit from the bracket.

Installation Notice

Tightening  Torque

9 - 12 Nm

Removal of the ABS / ABD Unit
Location : Under the front passenger's seat.

1. Remove the wiring connector of the ABS/ABD(or ABS :

Attached type) ECU.

2. Remove the ground wire.

3. Unscrew the mounting bolts and remove the ECU.

4. Installation should follow the removal precedure in the

reverse order.

Tightening Torque

12 - 16 Nm

Notice

When carrying a new unit, never recline it over 30°.