Closed Valve Pintle Position

At key-on, the PCM sets the closed valve pintle position to 103 counts. Since the EGR valve pintle will not close to 0 counts, the PCM uses 103 counts as a reference point. The closed valve pintle position is updated only when the actual pintle position falls below 103 counts. If the closed valve pintle position is measured above 103 counts, the PCM will set a diagnostic trouble code. A DTC will also set if the pintle position falls below 9 counts. Closed valve pintle positions outside of this range indicate a pintle position sensor failure. Once the closed valve pintle position is established, the PCM uses this information to calculate the normalized pintle position.