PINPOINT TEST HH: Exhaust Gas Recirculation System Module (ESM): Introduction
WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2014 Lincoln Navigator, 2014 Lincoln MKZ, 2014 Lincoln MKX, 2014 Lincoln MKT, and 2014 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
This pinpoint test is intended to diagnose the following:
- ESM (9Y456)
- orifice tube assembly (9D477)
- differential pressure feedback exhaust gas recirculation (EGR) sensor pressure hoses
- vacuum lines
- harness circuits: DPFE, SIGRTN, EVR, VPWR and VREF
- PCM (12A650)
| Pin | Circuit |
|---|---|
| 1 | EVR (EGR Vacuum Regulator) |
| 4 | VPWR (Vehicle Power) |
| 6 | SIGRTN (Signal Return) |
| 5 | DPFE (Differential Pressure Feedback EGR) |
| 2 | VREF (Reference Voltage) |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to SECTION 6: REFERENCE VALUES .
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series | 190-PIN | E21 E64 E63 E64 E48 |
EVR SIGRTN VREF SIGRTN DPFE |
| Mustang | 190-PIN | E35 E32 B40, E20 E32 E21 |
EVR SIGRTN VREF SIGRTN DPFE |