Outline Of Diagnosis

Detect the malfunction of crankshaft position sensor output property.

Compare the normal crankshaft position sensor signal with normal camshaft position sensor signal. When each input number does not correspond, judge NG.

Fig 1: Camshaft Position Sensor Circuit Graph

Courtesy of SUBARU OF AMERICA, INC.

• Cylinder judgment method 

  When BTDC97°CA crankshaft position sensor signal is input, judge what cylinder piston is brought to the top dead center of compression by camshaft position sensor signal number.

  Fig 2: Camshaft Position Sensor Table

  Courtesy of SUBARU OF AMERICA, INC.