Pressure Feedback ELEC. (PFE) EGR Sensor/Delta PFE Sensor
- Faults in sensor or circuit should set a service code. If service code has not been set, install Breakout Box (014-00322). Connect PCM to breakout box. Connect hand vacuum/pressure pump to sensor. Connect DVOM to SIG RTN test terminal and ground. Monitor DVOM while applying vacuum or pressure and compare to specifications. See DELTA PRESSURE FEEDBACK ELECTRONIC (DPFE) EGR SPECIFICATIONS or PRESSURE FEEDBACK ELECTRONIC (PFE) EGR SPECIFICATIONS table. Replace sensor if not within specification.
- The resistance substrate can be checked using an analog ohmmeter connected between VREF terminal and PFE or DPFE terminal. Exercise sensor with hand vacuum/pressure pump and watch for jerks or jumps toward infinity. No specific resistance specifications are available.
DPFE SENSOR SPECIFICATIONS
| Pressure (psi) |
Vacuum (In. Hg) |
Volts |
| 4.34 |
8.83 |
4.56 |
| 3.25 |
6.62 |
3.54 |
| 2.17 |
4.41 |
2.51 |
| 1.08 |
2.21 |
1.48 |
| 0 |
0 |
0.45 |
PFE SENSOR SPECIFICATIONS
| Pressure (psi) |
Vacuum (In. Hg) |
Volts |
| 1.82 |
3.70 |
4.75 |
| 1.36 |
2.79 |
4.38 |
| 0.91 |
1.85 |
4.00 |
| 0.46 |
0.94 |
3.63 |
| 0 |
0 |
3.25 |
| -2.47 |
-5.03 |
1.22 |
| -3.63 |
-7.40 |
0.25 |