Diagnostic Method

When BTDC97°CA crankshaft position sensor signal is input, compare the camshaft position sensor signal number in past 4 times with camshaft position sensor signal number at normal. Increase NG judgment counter when each number does not correspond at once, judge OK and clear NG when the camshaft position sensor signal is normal.

Judgment Value 

Fig 1: Threshold Value Table

Courtesy of SUBARU OF AMERICA, INC.

1. Time Needed for Diagnosis:  6 revs.
2. Malfunction Indicator Light Illumination:  Illuminates as soon as malfunction occurs.