PINPOINT TEST B: Powertrain Control Module (PCM) Power Relay: 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:
- harness circuits: B+, IGN START/RUN, INJPWRM, ISP-R, PCMRC, VPWR and GND
- PCM power relay (12A646)
- 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 4.6L, E-Series 5.4L | 190-PIN | B21 | INJPWRM |
| B30, B67, B68 | VPWR | ||
| B42 | ISP-R | ||
| B38 | PCMRC | ||
| E-Series 6.8L | 170 PIN | E23 | INJPWRM |
| B35, B36 | VPWR | ||
| B31 | ISP-R | ||
| B37 | PCMRC | ||
| Edge 3.5L, Edge 3.7L, MKX | 190-PIN | B33 | INJPWRM |
| B67, B68 | VPWR | ||
| B42 | ISP-R | ||
| B38 | PCMRC | ||
| Edge 2.0L, Explorer 2.0L | 154 PIN | B5, B6 | VPWR |
| B15 | ISP-R | ||
| B27 | PCMRC | ||
| Explorer 3.5L, F-150 6.2L, F-150 5.0L, F-150 3.7L | 190-PIN | B67, B68 | VPWR |
| B42 | ISP-R | ||
| B38 | PCMRC | ||
| F-150 3.5L | 198 PIN | B101, B102, B103 | VPWR |
| B42 | ISP-R | ||
| B58 | PCMRC | ||
| Fiesta | 128 PIN | B11, B12, B8 | VPWR |
| B8 | ISP-R | ||
| B1 | PCMRC | ||
| Flex 4V 3.5L, MKS 3.7L, MKT 3.7L, Taurus 4V 3.5L | 190-PIN | B33 | INJPWRM |
| B51, B52, B53 | VPWR | ||
| B7 | ISP-R | ||
| B8 | PCMRC | ||
| Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, Taurus GTDI 3.5L | 190-PIN | B21 | INJPWRM |
| B35, B36, B51 | VPWR | ||
| B42 | ISP-R | ||
| B38 | PCMRC | ||
| Focus | 154 PIN | B21 | INJPWRM |
| B5, B6 | VPWR | ||
| B15 | ISP-R | ||
| B27 | PCMRC | ||
| Fusion 3.5L, MKZ | 140 PIN | B45 | INJPWRM |
| B51, B52 | VPWR | ||
| B37 | ISP-R | ||
| B35 | PCMRC | ||
| All other vehicles | 190-PIN | B21 | INJPWRM |
| B67, B68 | VPWR | ||
| B42 | ISP-R | ||
| B38 | PCMRC |