System Testing: Notes
WARNING:
Deactivate air bag system before performing any service operation involving steering column components. See AIR BAG RESTRAINT SYSTEM
article. Do not apply electrical power to any component on steering column without first deactivating air bag system. Air bag may deploy.
Before performing any tests on windshield wiper/washer system, check the following items to eliminate common problems:
- Wiper/Washer Related Fuses
- Damaged/Stripped Wiper Motor Shaft
- Damaged/Stripped Wiper Pivot Arm Shaft
- Damaged Washer Pump
- Loose Or Corroded Connections
- Damaged Wiring Harness
- Binding Windshield Wiper Pivot Arm
- Inoperative Multifunction Switch
- Speed Dependent Feature Deactivated
New Generation Star (NGS) Scan Tool (49-T088-0A0) is required for testing the windshield wiper/washer system. See ON-DEMAND SELF-TEST . Perform a complete visual inspection of system. Check for damaged or disconnected wiring and for loose or damaged connectors. For individual component testing, see COMPONENT TESTS . If all connections and components are okay, go to test procedure for appropriate symptom. See TEST DIRECTORY .
TEST DIRECTORY
| Symptom | Test No. |
|---|---|
| Windshield Washer Inoperative | 1 |
| Windshield Wipers Inoperative | 2 |
| No Wiper High Speed | 3 |
| No Wiper Low Speed | 4 |
| Wipers Work At Only One Interval Setting | 5 |
| Wipers Run With Switch Off | 6 |
| Windshield Washer Inoperative - No Interval Delay | 7 |