PINPOINT TEST QA: Unable to Activate Self-Test/Network Communication Error: Introduction
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 |