Pinpoint Tests AE: Unable To Activate Self Test/Network Communication Error: Introduction
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2017 Ford Transit-350 HD, 2017 Ford Transit-350, 2017 Ford Transit-250, 2017 Ford Transit-150, and 2017 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.
This pinpoint test is intended to diagnose the following:
- Unable to communicate with the PCM
- Unable to activate the PCM self-test
- Harness circuits VPWR, ISP-R, PCMRC and PWRGND
| Pin | Circuit |
|---|---|
| 1 | SIGRTN (Signal Return) |
| 3 | VREF (Reference Voltage) |
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Transit | A | 2, 3, 42, 53, 7 17, 29, 5 48 39 |
PWRGND VPWR PCMRC ISP-R |
| All other vehicles | B | 70, 71, 72, 73, 74 67, 68, 69 38 42 |
PWRGND VPWR PCMRC ISP-R |