Pinpoint Tests AE: Unable to Activate Self-Test/Network Communication Error: Introduction

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 powertrain control module (PCM)
unable to activate the PCM self-test
harness circuits VPWR, ISP-R, PCMRC and PWRGND

Fig 1: Identifying Exhaust Gas Recirculation (EGR) Valve Connector
Courtesy of FORD MOTOR CO.

Fig 2: Identifying Powertrain Control Module-B (PCM-B) Connector
Courtesy of FORD MOTOR CO.