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Home >> Buick >> 2003 >> Century Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 414 (Data Link Communication System) >> Diagnostic Information and Procedures >> Symptoms - Data Link Communications >> Notes
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Symptoms - Data Link Communications: Notes

WARNING: This page is about a different car, the 2004 Buick Regal and 2004 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: The following steps must be completed before using the symptom tables:
  1. Perform the Diagnostic System Check for the subsystem exhibiting the symptoms. Refer to Control Module References in Body Control System. The subsystem diagnostic system check will identify where to begin diagnosis of the data link communication system.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to Data Link Communications Description and Operation .
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