Pressure Feedback Exhaust Sensor: Testing and Inspection

Inspection
1. Connect SST (NGS) to data link connector.
2. Warm-up engine and run it at idle.
3. Access DPFEGR PID and record value.







4. If not as specified, perform the following:
a. Turn ignition switch ON. Access DPFEGR PID on NGS.
b. Disconnect tubes from sensor.
c. Connect hand vacuum pump to intake manifold side (downstream side = smaller diameter) of DPFE sensor.
d. Apply vacuum and check PID. If not at specification. replace the differential pressure feedback EGR sensor.