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

Fig 1: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector

Courtesy of FORD MOTOR CO.

Fig 2: Throttle Position (TP) Sensor Connector

Courtesy of FORD MOTOR CO.

For PCM connector views or reference values, refer to REFERENCE VALUES .