Testing Notes

NOTE: You should enter this Pinpoint Test only when directed here.

REMEMBER: This Pinpoint Test is intended to diagnose the following:

- Differential Pressure Feedback Electronic (DPFE) EGR Sensor.

- Exhaust Gas Recirculation (EGR) Valve.

- Electronic Vacuum Regulator (EVR).

- Orifice Tube Assembly.

- DPFE Sensor Pressure Hoses.

- Vacuum Lines.

- Harness Circuits: VREF, DPFE, SIG, SIG RTN, EVR, EVR PWR.

- Powertrain Control Module (PCM).