Seville STS V8-4.6L VIN 9 (1998)
EGR Valve Position Sensor: Description and Operation
EGR Pintle Position Sensor
The PCM monitors the EGR valve pintle position input to ensure that the valve responds properly to commands from the PCM and to detect a fault if the
pintle position sensor and control circuits are open or shorted. If the PCM detects a pintle position signal voltage outside the normal range of the pintle
position sensor, or a signal voltage than is not within a tolerance considered acceptable for proper EGR system operation, the PCM will set a DTC.
