Courtesy Lamps
Inspection and Verification - Courtesy Lamps1. Verify the customer's concern by operating the interior lamps to duplicate the condition.
Visual Inspection Chart:
2. Inspect to determine if one of the mechanical or electrical concerns from the Visual Inpsection Chart apply.
3. If the inspection reveals obvious concerns that can be readily serviced, correct the concern before continuing with Inspection and Verification.
4. If the concern(s) remains after the inspection, use Rotunda New Generation (NGS) Tester 007-00500 or equivalent, connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute Self Test Diagnosucs for the lighting control module.
5. If self test is passed and no diagnostic trouble codes (DTCs) are retrieved, go to the Symptom Chart to continue diagnosis. Courtesy Lamps
6. If diagnosis trouble codes (DTCs) are retrieved, go to Lighting Control Module (LCM) Diagnostic Trouble Codes (DTCs) Index to continue diagnosis.
7. If the lighting control module cannot be accessed by the NGS, go to Pinpoint Test AA. AA - No Communication With Lighting Control Module (LCM)