PINPOINT TEST HH: Exhaust Gas Recirculation System Module (ESM): Introduction
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2012 Lincoln Navigator L, 2012 Lincoln Navigator, 2012 Lincoln MKZ, 2012 Lincoln MKX, and 2012 Lincoln MKT. 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
- powertrain control module (PCM) (12A650)
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES article.
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series | 190-PIN | E21 | EVR |
| E64 | SIGRTN | ||
| E63 | VREF | ||
| E64 | SIGRTN | ||
| E48 | DPFE | ||
| Mustang | 190-PIN | E63 | EVR |
| E32 | SIGRTN | ||
| B40, E20 | VREF | ||
| E32 | SIGRTN | ||
| E21 | DPFE |