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
| 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 |