|
|
4F-14 ANTILOCK BRAKE SYSTEM Description - When measured by multi - meter (AC) : output voltage > 70 mV - When measured in oscilloscope : output voltage ³ 120 mV/P-P l Replace the sensor. l Check wire for ground and open. l Check connection of the wheel speed sensor con- nector and ECU side connector. (Standard air gap : 0.15 - 1.20 mm) l 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 l Replace the sensor. l Check wire for ground and open. l Check connection of the wheel speed sensor con- nector and ECU side connector. l Measure air gap between wheel teeth and wheel speed sensor and check installation of wheel tooth. (Standard air gap : 0.15 - 1.20 mm) l 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 l Replace the sensor. l Check number of teeth on the wheel rotor and its condition. - Number of teeth : 52 l Check valve relay voltage. l Check connection of connector and terminals in the ECU and hydraulic modulator. l Check ground. l Check terminals for open or short. (When connector is removed) l 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 |