Pinpoint Test QA: Unable To Activate Self-Test/Network Communication Error: Introduction
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2009 Mercury Mountaineer, 2009 Mercury Milan, 2009 Mercury Mariner, 2009 Mercury Grand Marquis, and 2009 Lincoln Town Car. 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
| 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, Expedition, F-150 3V 4.6L, F-150 5.4L, Navigator |
190-Pin | B22, B69, B70 B67, B68 B38 B42 |
PWRGND VPWR PCMRC ISP-R |
| E-Series 6.8L, F-Super Duty |
170 Pin | B47, B48, B49, B50 B35, B36 B37 B31 |
PWRGND VPWR PCMRC ISP-R |
| Escape/Mariner, Focus |
190-Pin | B69, B70 B67, B68 B38 B42 |
PWRGND VPWR PCMRC ISP-R |
| Explorer, Explorer Sport Trac, Mountaineer, Mustang |
170 Pin | B47, B48, B49, B50 B35, B36 B37 B46 |
PWRGND VPWR PCMRC ISP-R |
| F-150 2V 4.6L | 190-Pin | B22, B69, B70 B67, B68 B40 B17 |
PWRGND VPWR PCMRC ISP-R |
| Fusion, Milan, MKZ |
140 Pin | B67, B68, B69 B51, B52 B35 B37 |
PWRGND VPWR PCMRC ISP-R |
| All other vehicles | 190-Pin | B67, B68, B69, B70 B51, B52, B53 B8 B7 |
PWRGND VPWR PCMRC ISP-R |