REAR WINDOW DEFOGGER/HEATED OUTER MIRROR/WINDSHIELD WIPER DE-ICER

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Outline

•  The rear window defogger removes fogging from the rear window glass surface.
•  The heated outer mirrors remove fogging from the surface of outer mirror glass. (With heated outer mirrors)
•  The windshield wiper de-icer warms the glass around windshield wipers when the windshield wiper is stuck due to freezing. (With windshield wiper de-icer)

Functions

•  Fogging on the rear window glass/outer mirror is removed by heating the rear window glass using the rear window defogger/heated outer mirror filaments to vaporize moisture on the window.
•  Freezing on the windshield wipers is melted by heating the glass around the windshield wiper using the windshield wiper de-icer filaments.

Personalization feature

•  The operation time setting (initial setting 15 min) for the rear window defogger/heated outer mirror/windshield wiper de-icer can be changed. For details on the personalization features, refer to the [GLASS/WINDOW/MIRROR PERSONALIZATION]. (See GLASS/WINDOWS/MIRRORS PERSONALIZATION.)


Structure/Construction


Structural view

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System wiring diagram

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•  The rear window defogger filaments are located on the cabin side of the rear window glass.
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•  The heated outer mirror filaments are built into the outer mirror glass.
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•  The windshield wiper de-icer is located on the lower part of the windshield.
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Operation


Rear window defogger operation time is set to “15 minutes”

1.  When the rear window defogger switch is turned on with the ignition switched ON (engine off or on), the climate control unit sends a rear window defogger operation request signal (1) to the instrument cluster via CAN communication.

2.  The instrument cluster sends the rear window defogger operation signal (2) to the FBCM.

3.  When the FBCM receives the rear window defogger operation signal, it turns the rear window defogger relay on (3).

4.  When the rear window defogger relay turns on, the windshield wiper de-icer relay turns on (4).

5.  The rear window defogger timer operates at the same time the rear window defogger relay and windshield wiper de-icer relay turn on. In addition, voltage is supplied (5) to the rear window defogger/heated outer mirror/windshield wiper de-icer filaments and the filaments are heated to warm the glass around the rear window glass/outer mirror glass/windshield wipers.

Note
•  When approx. 15 min have elapsed after the rear window defogger timer started operation, the FBCM turns the rear window defogger relay off and stops the rear window defogger/heated outer mirror/windshield wiper de-icer operation.

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Rear window defogger operation time is set to “Continuous”

1.  When the rear window defogger switch is turned on with the ignition switched ON (engine off or on), the climate control unit sends a rear window defogger operation request signal (1) to the instrument cluster via CAN communication.

2.  The instrument cluster sends the rear window defogger operation signal (2) to the FBCM.

3.  When the FBCM receives the rear window defogger operation signal, it turns the rear window defogger relay on (3).

4.  When the rear window defogger relay turns on, the windshield wiper de-icer relay turns on (4).

5.  The rear window defogger timer operates at the same time the rear window defogger relay and windshield wiper de-icer relay turn on. In addition, voltage is supplied (5) to the rear window defogger/heated outer mirror/windshield wiper de-icer filaments and the filaments are heated to warm the glass around the rear window glass/outer mirror glass/windshield wipers.

6.  When the front body control module (FBCM) receives an ambient temperature signal of 0 degrees C {32 degrees F} or less from the PCM after approx. 15 min have elapsed since it received the rear window defogger operation request signal, it continues turning the rear window defogger relay on (6). (Ambient temperature of 0 degrees C {32 degrees F} or less detected)

7.  When the front body control module (FBCM) receives an ambient temperature signal of 1 degrees C {34 degrees F} or more after approx. 15 min have elapsed since it received the rear window defogger operation request signal, it turns the rear window defogger relay off to stop the rear window defogger/heated outer mirror/windshield wiper de-icer operation (7). (Ambient temperature of 1 degrees C {34 degrees F} or more detected)

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Fail-safe

•  Not applicable