Symptoms - Lighting Systems: Notes
WARNING: This page is about a different car, the 2003 Cadillac CTS. 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 table.
- Perform the DIAGNOSTIC SYSTEM CHECK - LIGHTING SYSTEMS
before using the symptom tables in order to verify that all of the following are true:
- There are no DTCs set.
- The control modules can communicate via the serial data link.
- Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following: