Pinpoint Test QA: Unable to Activate Self-Test/Network Communication Error: Introduction
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, 2010 Lincoln Town Car, and 2010 Lincoln Navigator L. 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
For PCM connector views or reference values, refer to REFERENCE VALUES .
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR PIN REFERENCE CHART
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Crown Victoria, Grand Marquis, Ranger, Town Car |
170 Pin | B47, B48, B49, B50 B35, B36 |
PWRGND VPWR |
| E-Series 4.6L, E-Series 5.4L |
190-Pin | B22, B69, B70 B67, B68 B38 B42 |
PWRGND VPWR PCMRC ISP-R |
| E-Series 6.8L, F-Series Super Duty |
170 Pin | B47, B48, B49, B50 B35, B36 B37 B31 |
PWRGND VPWR PCMRC ISP-R |
| Edge, Flex 4V 3.5L, MKS 3.7L, MKT 3.7L, MKX, Taurus 4V 3.5L |
190-Pin | B67, B68, B69, B70 B51, B52, B53 B8 B7 |
PWRGND VPWR PCMRC ISP-R |
| Explorer, Explorer SportTrac, Mountaineer, Mustang |
170 Pin | B47, B48, B49, B50 B35, B36 B37 B46 |
PWRGND VPWR PCMRC ISP-R |
| Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, Taurus GTDI 3.5L |
190-Pin | B67, B68, B69, B70 B35, B36, B51 B38 B42 |
PWRGND VPWR PCMRC ISP-R |
| Fusion 3.5L, MKZ |
140 Pin | B67, B68, B69 B51, B52 B35 B37 |
PWRGND VPWR PCMRC ISP-R |
| All other vehicles | 190-Pin | B69, B70 B67, B68 B38 B42 |
PWRGND VPWR PCMRC ISP-R |