OBD Operation Summary for Fiesta - MotorCraftService.com

Camshaft/Crankshaft Position CorrelationThis diagnostic monitors whether the mean camshaft signal is within a plausible range during the reference positionadaptation. The reference position adaptation is enabled if the target camshaft position is the reference one. This occursafter every engine start or during engine operation depending on the engine operating state.A mean camshaft position is calculated from several camshaft signals. If the mean camshaft position is outside thehysteresis area, an incorrect camshaft reference position is detected. If this position is within the hysteresis, area, thenthere is no malfunction. After detecting a malfunction, an anti-bounce counter is incremented; otherwise the counter isdecremented. If the counter exceeds an calibrated threshold, the appropriate DTC will be stored.Example 1:ExampleINLETValveliftAdjust.rangeHys. ADC Hys. RTDFailureWrongcamshaftreferencepositionTDC°CRKExample 2:Ref.AdaptationRef.AdaptationRef.AdaptationRef.AdaptationRef. AdaptationMean camshaft positionTheoretical camshaft positionAllowed hysteresis ADC/RTDOut of rangeWrong camshaftreference positionrecognisedCONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 74 OF 111