AUTO WIPER SYSTEM OPERATION

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1.  The rain sensor installed in the windshield detects rainfall amount when the wiper and washer switch is turned to the AUTO position.

2.  The detected rainfall amount is converted to an electronic signal and transmitted to the auto light/wiper control module as a windshield wiper operation control signal.

3.  When the microcomputer in the auto light/wiper control module receives the control signal, current (1) flows to the transistor and the transistor is turned on.

4.  When the transistor turns on, the windshield wiper relay turns on.

5.  When the windshield wiper relay turns on, the current flows to the windshield wiper motor, and the wiper operates at low speed.

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Intermittent Operation

Low Speed Operation

•  If the windshield wipers are operating intermittently and the rain sensor detects an amount of rainfall specifc to wiper operation greater than low speed, but less than high speed, the wipers are operated continuously at low speed.

High Speed Operation

•  If the windshield wipers are operating at low speed or stopped and the rain sensor detects an amount of rainfall specific to high speed operation or greater, the wipers are operated two times at high speed. If the rain sensor receives a signal for high speed operation after the wipers are operated at high speed twice, the high speed operation is continued.