Initial Inspection and Diagnostic Overview

1. The power window system is a Generic Electronic Module (GEM) controlled system.
2. Verify the customer concern by operating the power window system.
3. Visually inspect for obvious signs of mechanical and electrical damage.

VISUAL INSPECTION CHART

Mechanical
- Window regulator electric drive
- Window glass

Electrical
- Fuse(s)
- Wiring harness
- Loose or corroded connector(s)
- Circuitry

4. If the concern remains after the inspection, connect the New Generation Star (NGS) Tester to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the NGS menu. If the NGS does not communicate with the vehicle:
- Check that the program card is properly installed.
- Check the connections to the vehicle.
- Check the ignition switch position.
5. If the NGS still does not communicate with the vehicle, refer to the New Generation Star (NGS) Tester manual.
6. Perform the DATA LINK DIAGNOSTIC TEST. If the NOS responds with:
- CKT 914,CKT 915 or CKT 70 = ALL ECUS NO RESP/NOT EQUIP, refer to Information Bus.
- NO RESP/NOT EQUIP for the GEM, go to Pinpoint Test A. A: No Communication With the Generic Electronic Module
- SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the GEM.
7. If the DTCs retrieved are related to the concern, go the GEM Diagnostic Trouble Code (DTC) Index to continue diagnostics.
8. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Symptom Related Diagnostic Procedures