REAR WIPER/WASHER SYSTEM

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Outline

•  The rear wiper and washer system operates the rear wiper and rear washer by operating the rear wiper and washer switch.

Function

•  The rear wiper and washer system is equipped with the following functions.
―  Continuous wiper function
―  Auto-stop function
―  Intermittent wiper function
―  Synchronized washer function

Structure/Construction


System structure

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System wiring diagram

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Operation


Continuous wiper operation

1.  When the rear wiper and washer switch is in the ON position (1), the instrument cluster detects (2) a rear wiper switch on signal.

2.  The instrument cluster sends (3) the rear wiper switch on signal to the BCM via CAN communication.

3.  When the BCM receives the rear wiper switch on signal, it sends (4) a rear wiper operation request signal to the ESU via CAN communication.

4.  When the ESU receives the rear wiper operation request signal, it turns FET A on (5).

5.  When FET A turns on, the rear wiper operates (6) continuously.

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Auto-stop operation

Note
•  The auto stop switch in the rear wiper motor operates as follows according to the operation position of the rear wiper.
―  Rear wiper in park position: Off
―  Rear wiper in position other than stop: On
Operation conditions
•  Rear wiper and washer switch turns off during continuous wiper operation
Operation
1.  When the rear wiper and washer switch is in the OFF position (1), the ESU turns FET A off (2).
2.  The rear wiper operates (3) continuously because the autostop switch is on.
3.  When the rear wiper stops at the park position, the autostop switch turns off (4).
4.  When the autostop switch turns off, the rear wiper stops (5).
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Intermittent wiper operation

1.  When the rear wiper and washer switch is in the INT position (1), the instrument cluster detects (2) a rear wiper switch INT signal.

2.  The instrument cluster sends (3) the rear wiper switch INT signal to the BCM via CAN communication.

3.  When the BCM receives the rear wiper switch INT signal, it sends (4) a rear wiper operation request signal to the ESU via CAN communication.

4.  When the ESU receives the rear wiper operation request signal, it turns FET A on (5).

5.  When FET A turns on, the rear wiper performs intermittent wiper operation (6).

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Synchronized washer operation

1.  When the rear wiper and washer switch is in the REAR WASHER position (1) with the main power switched ON (READY off or on), the instrument cluster detects (2) a rear washer switch on signal.

2.  The instrument cluster sends (3) the rear washer switch on signal to the BCM via CAN communication.

3.  When the BCM receives the rear washer switch on signal, it turns FET A and FET D on (4) and operates (5) the rear washer motor.

4.  When the BCM receives the rear washer switch on signal for a certain period of time, it sends (6) a rear wiper operation request signal to the ESU via CAN communication.

5.  When the ESU receives the rear wiper operation request signal, it operates (7) the rear wiper.

6.  When the rear washer switch is in the off position, the rear wiper stops after it operated twice.

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