PINPOINT TEST QA: Unable to Activate Self-Test/Network Communication Error: 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:
- unable to communicate with powertrain control module (PCM)
- unable to activate the PCM self-test
- incorrect self-test procedure
- harness circuits: ISP-R, PCMRC, PWRGND and VPWR
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 | B22, B50, B69, B70 | PWRGND |
| B30, B67, B68 | VPWR | ||
| B38 | PCMRC | ||
| B42 | ISP-R | ||
| E-Series 6.8L | 170 PIN | B10, B47, B48, B49, B50 | PWRGND |
| B35, B36 | VPWR | ||
| B37 | PCMRC | ||
| B31 | ISP-R | ||
| Edge 2.0L, Explorer 2.0L | 154 PIN | B1, B2, B4 | PWRGND |
| B5, B6 | VPWR | ||
| B27 | PCMRC | ||
| B15 | ISP-R | ||
| F-150 3.5L | 198 PIN | B50, B96, B97, B98, B99 | PWRGND |
| B101, B102, B103 | VPWR | ||
| B58 | PCMRC | ||
| B42 | ISP-R | ||
| Fiesta | 128 PIN | B35, B36, B47, B48 | PWRGND |
| B11, B12, B8 | VPWR | ||
| B1 | PCMRC | ||
| B8 | ISP-R | ||
| Flex 4V 3.5L, MKS 3.7L, MKT 3.7L, Taurus 4V 3.5L | 190-PIN | B66, B67, B68, B69, B70 | PWRGND |
| B51, B52, B53 | VPWR | ||
| B8 | PCMRC | ||
| B7 | ISP-R | ||
| Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, Taurus GTDI 3.5L | 190-PIN | B50, B67, B68, B69, B70 | PWRGND |
| B35, B36, B51 | VPWR | ||
| B38 | PCMRC | ||
| B42 | ISP-R | ||
| Focus | 154 PIN | B1, B2, B4, B50 | PWRGND |
| B5, B6 | VPWR | ||
| B27 | PCMRC | ||
| B15 | ISP-R | ||
| Fusion 3.5L, MKZ | 140 PIN | B66, B67, B68, B69 | PWRGND |
| B51, B52 | VPWR | ||
| B35 | PCMRC | ||
| B37 | ISP-R | ||
| MKX | 190-PIN | B66, B69, B70 | PWRGND |
| B67, B68 | VPWR | ||
| B38 | PCMRC | ||
| B42 | ISP-R | ||
| Motorhome / Stripped Chassis / Step Van | 190-PIN | B69, B70 | PWRGND |
| B67, B68 | VPWR | ||
| B38 | PCMRC | ||
| B42 | ISP-R | ||
| All other vehicles | 190-PIN | B50, B69, B70 | PWRGND |
| B67, B68 | VPWR | ||
| B38 | PCMRC | ||
| B42 | ISP-R |