The EGRVP sensor is a 3-wire non-contacting position sensor based upon the magneto-resistive effect (that is, a
non-contacting Hall-effect). The PCM supplies a 5 volt reference (VREF) signal which the EGR position sensor
uses to produce a linear analog voltage indicating EGRVP.
The PCM uses the EGRVP sensor to determine EGRVP and compares it to the calculated desired position.
IDS: EGRVP (volts) and EGR_A_ACT (%)