Measuring condition

After warming-up
At idling

Fig 1: Crankshaft Position Sensor And Intake Camshaft Position Sensors Waveform (At Idling)
Courtesy of SUBARU OF AMERICA, INC.

Fig 2: ECM - Circuit Diagram (1 Of 4)
Courtesy of SUBARU OF AMERICA, INC.

Fig 3: ECM - Circuit Diagram (2 Of 4)
Courtesy of SUBARU OF AMERICA, INC.

Fig 4: ECM - Circuit Diagram (3 Of 4)
Courtesy of SUBARU OF AMERICA, INC.

Fig 5: ECM - Circuit Diagram (4 Of 4)
Courtesy of SUBARU OF AMERICA, INC.