GENERAL
The back window glass (rear window defogger wire) is attached to the inside of the rear window and defogs the window surface quickly when the rear window defogger switch is pressed. The indicator light on the switch illuminates while the system is operating. This system automatically turns off after approximately 15 minutes.
Note
If the auxiliary battery voltage is low, the window defogger system may not operate. When "Operation of Electrical Items Restricted." is not displayed on the multi-information display in the combination meter assembly, check the Data List item "Battery Control Count (Body ECU)".
Tech Tips
The window defogger system is linked with the mirror heater function.
FUNCTION OF MAIN COMPONENT
| Component | Outline |
|---|---|
| Air Conditioning Control Assembly | Sends signals to the air conditioning amplifier assembly to operate the window defogger system. |
| Air Conditioning Amplifier Assembly | Sends a window defogger system activation request signal to the semiconductor pwr integration ECU. |
| Semiconductor Pwr Integration ECU | Receives a window defogger system activation request signal from the air conditioning amplifier assembly and supplies power to the back window glass (rear window defogger wire). |
| Back Window Glass (Rear Window Defogger Wire) | Receives power from the semiconductor pwr integration ECU and heats the rear window using the back window glass (rear window defogger wire). |