Daewoo KORANDO Service Manual page 952

4F-10 ANTILOCK BRAKE SYSTEM
Defect Code
Rear/left Wheel Speed
09
Sensor (Signal)
Rear/right Wheel Speed
10
Sensor (Signal)
Wheel Rotor
11
Valve Relay
12
Application
Description
output voltage > 70 mV
- When measured in oscilloscope :
output voltage ³ 120 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 ³ 120 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 ³ 120 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.