Initial Inspection and Diagnostic Overview

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

VISUAL INSPECTION CHART

Mechanical
- Window regulator electric drive
- Window glass

Electrical
- Central Junction Box (CJB) Fuse:
- 6 (5A)
- 8 (5A)
- 15 (5A)
- 20 (5A)
- Battery Junction Box (BJB) Fuse:
- 103 (50A)
- 110 (30A)
- Relay(s)
- CJB
- Window regulator control switch
- Window regulator electric drive
- GEM
- Circuitry
- Damaged wiring harness
- Loose or corroded connector(s)

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 correctly 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 Tester manual.
6. Carry out the DATA LINK DIAGNOSTIC TEST. If the NGS responds with:
- CKT914, CKT915 or CKT7O = ALL ECUS NO RESP/NOT EQUIP, refer to Information Bus.
- NO RESP/NOT EQUIP for 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 carry out self-test diagnostics for the Generic Electronic Module (GEM).

7. If the DTCs retrieved are related to the concern, go to the GEM Diagnostic Trouble Code Index. Diagnostic Trouble Code Tests and Associated Procedures
8. If no DTCs related to the concern are retrieved, proceed to Symptom Chart. Symptom Related Diagnostic Procedures