Pinpoint Tests HE: Exhaust Gas Recirculation (EGR) Systems: Introduction
This pinpoint test is intended to diagnose the following:
- differential pressure feedback exhaust gas recirculation (EGR) sensor (9J460)
- differential pressure feedback EGR sensor pressure hoses
- orifice tube assembly (9D477)
- EGR cooler
- harness circuits: DPFE, SIGRTN and VREF
- PCM (12A650)
| Pin | Circuit |
|---|---|
| 1 | DPFE (Differential Pressure Feedback EGR) |
| 2 | SIGRTN (Signal Return) |
| 3 | VREF (Reference Voltage) |
Powertrain Control Module (PCM) Connector
For PCM connector views or Reference values, Refer to TYPICAL DIAGNOSTIC REFERENCE VALUES .
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Corsair 2.5L, Escape/Kuga 2.5L |
198 PIN | E38 | DPFE |
| Explorer 3.3L, | 306 PIN | E32 | DPFE |
| Transit | |||
| F-150 | 306 PIN | E79 | DPFE |
| All other vehicles | 198 PIN | E37 | DPFE |