WINDSHIELD WIPER SYSTEM OPERATION

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Low-Speed Continuous Operation

1.  When the windshield wiper switch is turned to the LO position, current (1) flows to the front wiper low relay in the BCM, turning on the front wiper low relay.

2.  When the front wiper low relay turns on, current flows to the windshield wiper motor causing the windshield wiper motor to operate at low speed.

3.  When the windshield wiper switch is set to the OFF position, the wipers stop in the park position by the auto-stop operation.

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Hi-Speed Continuous Operation

1.  When the windshield wiper switch is turned to the HI position, current (1) flows to the windshield wiper high relay in the BCM, and current (2) flows to the front wiper low relay, which turns on the front wiper high relay and the front wiper low relay.

2.  When the windshield wiper relay turns on, current flows to the windshield wiper motor, which causes the windshield wiper motor to operate at high speed.

3.  When the windshield wiper switch is set to the OFF position, the wipers stop in the park position by the auto-stop operation.

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Auto-stop Operation

1.  When the windshield wiper switch is set to the OFF position while the wipers are operating, current flows to the auto-stop switch, which is on, and the windshield wiper motor operates until it returns to the park position, stopping the wipers.

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One-touch Wiper Operation

1.  When the windshield wiper lever is pulled up, the one-touch switch is on and the current flows, causing the windshield wiper motor to operate at low speed.

2.  The windshield wipers operate at low speed while the windshield wiper lever is held up. When the windshield wiper lever is released, the wipers stop in the park position by the auto-stop operation.

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Intermittent Wiper Operation

1.  When the windshield wiper switch is moved to the INT position, current flows from the control circuit in the BCM to the transistor, and the windshield wiper motor operates at low speed.

2.  When a pre-set time has passed, current from the control circuit is stopped. Accordingly, current flow to the windshield wiper motor ceases, and the auto-stop operation causes the wipers to stop at the park position. This sequence repeats causing the wipers to operate intermittently.

3.  The wiper operation timing during intermittent operation can be set freely using the INT volume switch.

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Synchronized Washer and Wiper Operation

1.  When the windshield washer switch is turned on, current (1) flows to the washer relay (windshield) in the relay block and the washer relay (windshield) turns on.

2.  When the washer relay (windshield) turns on, the washer motor operates to spray washer fluid from the windshield washer nozzle. At the same time, a washer motor operation signal is sent to the control circuit causing the transistor to turn on. Accordingly, current (2) flows to the windshield wiper relay in the relay block and the windshield wiper relay turns on.

3.  When the windshield wiper relay turns on, the windshield wiper motor operates at low speed.

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