Initial Inspection and Diagnostic Overview

INSPECTION AND VERIFICATION
1. Verify the customer's original concern by opening the door(s) with the key in or headlamps on, or operating the vehicle to duplicate the condition.
2. Inspect to determine if one of the following electrical concerns apply:

VISUAL INSPECTION CHART

Electrical
- Check fuse junction panel Fuse: 12 (5 A), 5 (5 A), 23 (5 A), 20 (5 A), 5 (5 A).
- Check connectors for loose connection, damage, corrosion.
- Check circuits for shorts/opens.
- Damaged switches.

3. If inspection reveals an obvious concern that is readily serviced, correct the concern before continuing with Inspection and Verification.
4. If a concern remains after inspection, connect the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the Data Link Connector (DLC) located beneath the instrument panel to perform DATA LINK DIAGNOSTICS test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the Generic Electronic Module (GEM), go to Pinpoint Test A. A: No Communications With GEM Module If the DATA LINK DIAGNOSTICS test is passed for the GEM, retrieve continuous DTCs and execute Self Test Diagnostics for the GEM to retrieve current Diagnostic Trouble Code (DTCs).
5. If self test is passed and no DTCs are retrieved, go to the Symptom Chart. Symptom Related Diagnostic Procedures
6 If DTCs are retrieved, go to the GEM DTC Index. Diagnostic Trouble Code Tests and Associated Procedures
7. If the GEM cannot be accessed by the NGS, go to Pinpoint Test A. A: No Communications With GEM Module

Rotunda Service Bay Diagnostic System (SBDS) 001-00001 may also be used to diagnose this system.