Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2004 >> SSR >> Repair and Diagnosis >> External Pages >> Different car >> Section 422 (Data Link Communication System) >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with Class 2 Device >> Circuit Description

Circuit Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. Connecting a scan tool to the DLC allows communication with the modules for diagnostic purposes.

scientia non olet · About Mike's Workshop Manuals