Wiper and Washer Systems: Testing and Inspection

TROUBLESHOOTING HINTS

Windshield wiper and washer
1. Wipers do not operate.
1. Washer is not operative, either.
- Check multi-purpose fuse No. 1.
- Check ground.

2. Low-speed (or high-speed) wiper operation only is inoperative.
- Check wiper switch.

3. Wipers do not stop.
- Check wiper motor.
- Check intermittent wiper relay.
- Check wiper switch.

4. Intermittent wiper operation is inoperative.
- Check terminal voltage of steering-column switch (with a built-in intermittent wiper relay) with the intermittent wiper relay energized. (Refer to Fig.1)

Fig. 1:

5. The length of pause for intermittent operation cannot be varied.
- Check variable intermittent wiper control switch.
- Check intermittent wiper relay.

6. Washer is inoperative.
1. Wiper is operative on washer-wiper operation.
- Check washer motor.

2. Washer-wiper operation is inoperative also.
- Check washer switch.

7. Washer-wiper operation is inoperative.
- Check intermittent wiper relay.

Remote controlled mirror
Neither right nor left mirror operates.
1. Also cigarette lighter wiper does not operate.
- Check multi-purpose fuse No.7.

2. Windshield wiper operates.
- Check remote-controlled mirror switch.