System Testing: Notes
WARNING:
Deactivate air bag system before performing any service operation. 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.
CAUTION:
When battery is disconnected, vehicle computer and memory system may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES
article in GENERAL INFORMATION before disconnecting battery.
CAUTION:
Wiper motor contains ceramic magnets that may crack or shatter if motor is dropped or handled roughly.
Before performing any tests on 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.
Identify wiper/washer symptom and perform appropriate PINPOINT TEST. See PINPOINT TEST INDEX table. For individual component testing, see COMPONENT TESTING.
PINPOINT TEST INDEX
| Symptom | Pinpoint Test |
|---|---|
| Wipers Inoperative | A |
| Wipers Inoperative At High Speed | B |
| Wipers Inoperative At Low Speed | C |
| Wipers Inoperative At Interval Setting | D |
| Wipers Will Not Park Properly | E |
| Wipers Continue To Run When Switch Is Off | F |