Cayman (987) F6-2.9L (2009)
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The monitor runs immediately after a shift to large valve lift for approximately 3 sec. This strategy enables the diagnosis to also detect a slow shifting
cylinder bank.
The diagnosis is disabled at:
-
power stage error of solenoid valves
-
oil temperature > threshold
-
during catalyst heating +
-
lambda control not active
Diagnosis via deviation of camshaft speed fluctuation
If both solenoid valves have a malfunction the diagnosis is performed according to the following scheme:
