Front Wheel Speed Sensor: Inspection

Remove the bulkhead wiring harness connector from TCM. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION CONTROL MODULE (TCM)>REMOVAL .
Set the ST (CHECK BOARD) between the TCM and bulkhead wiring harness.
Set the probe of oscilloscope to the check board connector.
Terminals:

No. 12 (+) - No. 26 (-):

Courtesy of SUBARU OF AMERICA, INC.
Lift up the vehicle and raise the vehicle speed up to 20 km/h (12 MPH).
Check the waveform of front wheel speed sensor when vehicle speed is at 20 km/h (12 MPH).
NOTE: The waveform cycle changes as the speed changes.

Courtesy of SUBARU OF AMERICA, INC.