LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 2007 >> Grand Prix Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Data Communication System) >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with Class 2 Device >> Diagnostic Fault Information
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Fault Information

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Class 2 Serial Data 1 2* 1 -
Ground (DLC, terminal 5) - 1 - -
* An open between the data link connector (DLC) and JX 205, or DLC terminal 5 ground will only effect the communication with the scan tool. The vehicle modules will still communicate.
  1. No communication on any class 2 serial data module
  2. No communication on a specific class 2 serial data module
scientia non olet · About LEMON Manuals