Front ABS Sensor

Front ABS Wheel Speed Sensor

INSPECTION
CHECK WITH SUBARU SELECT MONITOR
1. Connect the Subaru Select Monitor to the data link connector.
2. Select (Current Data Display & Save). Check if the speed indicated on the display changes in the same manner as the speedometer reading during acceleration/deceleration when the steering wheel is in the straight-ahead position.
3. If the speed indicated on the display does not change, check the ABS wheel speed sensor.

ABS WHEEL SPEED SENSOR
1. Check the tip of the ABS wheel speed sensor for foreign particles or damage. If necessary, clean the tip or replace the ABS wheel speed sensor.
2. Connect a 12 V power supply to No. 2 terminal of sensor connector as shown in the figure, then attach resistance to the No. 1 terminal. Rotate the wheel at about 2.75 km/h (2 MPH), and measure the voltage using an oscilloscope.





NOTE: Check the ABS wheel speed sensor cable for discontinuity. If necessary, replace with a new part.