LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2018 >> Regal GS >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System - Diagnostic Information And Procedures (B388B-P0504) And Symptoms >> Diagnostic Information and Procedures >> Symptoms - Lighting >> Notes

Symptoms - Lighting: Notes

NOTE:

The following steps must be completed before using a symptom table.

  1. Perform the Diagnostic System Check - Vehicle before using a symptom table in order to verify that all of the following conditions are true:
    • There are no DTCs set.
    • The control modules can communicate via the serial data link.
  2. Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following:
scientia non olet · About LEMON Manuals