Geely CK Series 2007 Workshop Manual page 298

IV. ABS Operation Inspection
1. Check the Wheel Speed Sensor Output Voltage
1
Check whether the clearance between the wheel speed sensor and the ring gear is within the specification
For front wheel standard value, refer to "Front Wheel Sensor Installation Drawing"
For rear wheel standard value, refer to "Rear Wheel Sensor Installation Drawing"
3
Jack up the wheel and release the manual brake
2
Remove the ABS wire harness, measure at the wire harness connector
4
Rotate the wheel at the speed of 1/2 turn/second, and use the multimeter or oscilloscope to measure the
output voltage
Terminal 1-2
Terminal 19-20
Terminal 5-6
Terminal 22-23
Output Voltage
When use the multimeter to measure
For front wheel, refer to "Front Wheel Sensor Drawing".
For rear wheel, refer to "Rear Wheel Sensor Drawing".
When use the oscilloscope to measure
For front wheel, refer to the related standard.
For rear wheel, refer to the related standard.
5
The fact that the output voltage is not within the above range may result from the following causes:
Excessive clearance between the sensor and the ring gear.
Sensor fault.
Check the sensor resistance£¨1.0 - 1.3k¦¸£©.
Select the 4 points on the ring gear to check the clearance (ring gear distortion) between the ring
gear and the wheel speed sensor.
2.Check the Hydraulic Control Unit (HCU).
1
Jack up the vehicle, make sure the wheel can rotate freely.
2
Release the manual brake.
3
Turn the ignition switch to ON after connecting the scan meter, do not start the engine this time.
4
Refer to the HCU Diagnosis for inspection.
Note: when connecting or removing the scan meter, the ignition switch must be turned to OFF.
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