GENERAL
The window defogger wire is attached to the inside of the rear window and defogs the window surface quickly when the 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.
If the window defogger system is operated when the auxiliary battery voltage is low, due to the electrical load limit control that gives voltage supply priority to the power steering system, the window defogger system may not operate. In this case, check the vehicle control history (RoB) of the power steering system and check that "Battery Voltage Drop: X208F" is not stored before proceeding with troubleshooting.
FUNCTION OF MAIN COMPONENTS
| 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 power distribution box assembly. |
| Power distribution box assembly | Receives a window defogger system activation request signal from the air conditioning amplifier assembly and supplies power to the back door glass (window defogger wire). |
| Back door glass (window defogger wire) | Receives power from the power distribution box assembly and heats the rear window using the back door glass (window defogger wire). |