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Crankshaft Position Sensor (Method With Oscilloscope)

Prepare an oscilloscope.
Disconnect the ground cable from battery.
Remove the front pillar lower trim and console side panel lower RH of passenger's side.
Detach the floor mat of passenger's seat.
Remove the protect cover.

Fig 1: Locating Protect Cover Mounting Screws
Courtesy of SUBARU OF AMERICA, INC.
Remove the ECM from vehicle.

Fig 2: Locating ECM Mounting Bolts
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Connect the probe to ECM connector.

Fig 3: Connecting Probe To ECM Connector Terminals 17 And 25

G08543912

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Probe
17	+
25	-

Start the engine and let it idle.
Check the pattern is the same as the waveform and voltage shown below.

Fig 4: Crankshaft Position Sensor Output Waveform Display
Courtesy of SUBARU OF AMERICA, INC.
After inspection, install the related parts in the reverse order of removal.
Tightening torque:

7.5 N.m (0.8 kgf-m, 5.5 ft-lb)