REAR WIPER SYSTEM OPERATION

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Continuous Operation

1.  When the rear wiper switch is moved to the ON position, current (1) flows from the control circuit in the BCM to the transistor.

2.  When the transistor turns on, current (2) flows to the rear wiper motor and continuous operation starts.

3.  When the rear wiper switch is turned to the OFF position while the rear wipers are operating, the rear wiper motor performs an auto-stop operation and the wipers stop in the park position.

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Auto-stop Operation

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

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Intermittent Wiper Operation

1.  When the rear wiper switch is moved to the INT position, current (1) flows from the control circuit in the BCM to the transistor, and the rear wiper motor operation starts.

2.  When the transistor turns on, current (2) flows to the rear wiper motor and continuous operation starts.

3.  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.

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Washer Operation

1.  When the rear wiper switch is moved to the REAR WASHER position, current (1) flows to the rear washer relay in the BCM, turning on the rear washer relay.

2.  When the rear washer relay turns on, the washer motor operates to spray washer fluid from the rear 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 transistor in the BCM and the rear wiper motor operation starts.

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