Primary Speed Sensor: Inspection

WARNING: This page is about a different variant/trim than selected.

Remove the instrument panel lower cover. Refer to INSTRUMENT PANEL LOWER COVER EI-63, REMOVAL, Instrument Panel Lower Cover.
Set the probe of oscilloscope to TCM harness connector.
Connector & terminal

(B54) No. 6 (+) - No. 1 (-):

Fig 1: Identifying Instrument Panel Lower Cover
Courtesy of SUBARU OF AMERICA, INC.
Start and warm up the engine.
Check the waveform of primary speed sensor with engine idling.

Fig 2: Identifying Curve Between Primary Speed Sensor With Engine Idling
Courtesy of SUBARU OF AMERICA, INC.