Flow of Diagnosis

1. Verify the customer's concern by operating the power windows/heated back window to duplicate the condition.
2. Inspect to determine if one of the following mechanical or electrical concerns apply:

VISUAL INSPECTION CHART

Mechanical
^ Front door power window regulator damaged.
^ Front window run damaged.
^ Front door window glass out of window run.
^ Front door window glass broken.

Electrical
^ Lighting control module.
^ Driver door module.
^ Circuits open/shorted.
^ Loose, corroded connectors.
^ Damaged window regulator control switch.
^ Damaged window regulator electric drive.
^ Power distribution box Fuse D 40 for heated back window concern; Circuit Breaker 14 (20 A), Circuit Breaker F (30 A) or window regulator safety relay for power window concern.
^ Fuse function panel Circuit Breaker 14 (20 A), Fuses 6 (10 A), 9 (5 A), 15 (15 A), Fuse 13 (10 A), Fuse 4 (10 A) or Circuit Breaker 12 (18 A).
^ Scratched grid.

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 remains after the 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 driver door module, go to Pinpoint Test A. A: No Communication With Driver Door Module

If the NGS responds with NO RESPONSE/NOT EQUIPPED for lighting control module, go to Pinpoint Test B. B: No Communication With Lighting Control Module

If the DATA LINK DIAGNOSTICS test is passed for the driver door module and lighting Control module, retrieve continuous Diagnostic Trouble Codes (DTCs) and execute self test diagnostics for the driver door module and lighting Control module to retrieve current DTCs.

5. If self test is passed arid no DTCs are retrieved, go to Symptom chart to continue diagnosis. Symptom Related Diagnostic Procedures
6. If DTCs are retrieved for the driver door module, go to the Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index to continue diagnosis. Driver Door Module Diagnostic Trouble Code Index

If DTCs are retrieved for the lighting Control module, go to the Lighting Control Module (LCM) DTC Index to continue diagnostics. LCM Diagnostic Trouble Code Index

7. If the driver door module cannot be accessed by the NGS tester, go to Pinpoint Test A. A: No Communication With Driver Door Module

If the lighting Control module cannot be accessed by the NGS, go to Pinpoint Test B. A: No Communication With Driver Door Module

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