QA: Unable To Activate Self-Test/SCP Communication Error/DTC Not Listed Introduction

QA: Pinpoint Tests

Note

This Pinpoint Test is intended to diagnose the following:

• Standard corporate protocol (SCP) communication bus harness circuits: BUS+, BUS-, between DLC and PCM
• Data link connector harness circuits: chassis ground, power ground (PWR GND), battery positive voltage (B+)
• Powertrain control module (PCM) (12A650)

Note: Concerns found that affect the entire network are referred to in the Module Communication Network, Section 418-00 in the Workshop Manual.

Pinpoint Test Schematics and Connectors

 PCM CONNECTOR PIN NUMBERS

2.0L Contour/Mystique

LS6/LS8

All Others

QA: Pinpoint Tests