Initial Inspection and Diagnostic Overview

1. Verify the customer's concern by operating the windshield wiper and washer system to duplicate the condition.
2. Inspect to determine if one of the mechanical or electrical concerns apply:

VISUAL INSPECTION CHART - FRONT WIPER/WASHER SYSTEMS

Mechanical
- Windshield wiper blade missing or damaged.
- Binding windshield wiper pivot arm.
- Binding windshield wiper mounting arm and pivot shaft.
- Empty windshield washer reservoir.
- Kinked or broken windshield washer hoses.

Electrical
- Open fuse junction panel Fuses:
^ 8 (5 A)
^ 12 (5 A)
^ 20 (5 A)
^ 23 (5 A)
^ 17 (30 A)
^ 2 (5 A)
- Damaged windshield wiper motor.
- Damaged windshield washer pump.
- Open connectors.
- Corroded connectors.
- Inoperative multi-function switch.
- Open thermal breaker internal to the wiper motor.
- Washer motor relay.

3. Visually inspect the components of the windshield wiper system.

VISUAL INSPECTION CHART - REAR WIPER/WASHER SYSTEMS

Mechanical
- Binding windshield wiper pivot arm.
- Damaged/stripped windshield wiper motor shaft.
- Damaged/stripped windshield wiper pivot arm.
- Corrosion.

Electrical
- Open fuse 19 (15 A) in fuse junction panel.
- Damaged rear windshield wiper/washer switch.
- Damaged rear windshield wiper motor.
- Loose or corroded electrical connectors.

4. If inspection reveals an obvious concern that is readily repaired, correct the concern before continuing with Inspection and Verification.
5. If a concern remains after the inspection, connect Rotunda New Generation STAR (NGS) Tester 418-F048 or equivalent to the Data Link Connector (DLC) located beneath the instrument panel to perform the Data Link Diagnostics Test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the Generic Electronic Module (GEM), GO to Pinpoint Test J. J: No Comm. With the Module-Generic Electronic Module (GEM)

If the Data Link Diagnostic test is passed for the GEM, retrieve continuous Diagnostic Trouble Code (DTCs) and execute self test diagnostics for the GEM.

6. If self test is passed and no DTCs are retrieved, go to Symptom Chart to continue diagnostics. Symptom Related Diagnostic Procedures
7. If DTCs are retrieved, go to GEM DTC Index. Diagnostic Trouble Code Tests and Associated Procedures