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Symptoms - Lighting Systems: Notes

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  1. 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.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
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