DIFFERENTIAL PRESSURE FEEDBACK (D.P.F.) EGR SENSOR INSPECTION [YF (2.0L Zetec)]

1. Remove the D.P.F. EGR sensor with the connector still connected.

2. Install the vacuum pump to the narrower diameter of the D.P.F. EGR sensor.

3. Connect the WDS or the equivalent.

4. Turn the ignition switch to the ON position.

5. Using WDS or equivalent, verify that the D.P.F. EGR PID value is as indicated in the table.

• If not within the specification even though the related wiring harnesses have no malfunction, replace the D.P.F. EGR sensor. (See DIFFERENTIAL PRESSURE FEEDBACK (D.P.F.) EGR SENSOR REMOVAL/INSTALLATION [YF (2.0L Zetec)].)

D.P.F. EGR sensor standard

Measurement condition	DPFEGR PID value
Vacuum pump vacuum 0 kPa	0.2-1.3 V
Vacuum pump vacuum 27-30 kPa	More than 4.0 V
Within 3 s just after releasing air from the vacuum	Less than 1.5 V