Heated Glass Element: Description and Operation

How the Circuit Works

With the ignition switch in ON (II), battery voltage is supplied through fuse 10 (in the under-dash fuse/relay box) to the rear window defogger switch and through fuse 9 (in the under-dash fuse/relay box) to the rear window defogger relay contacts.

When the rear window defogger switch (in the Heater control panel (Canada: DX) or Heater-A/C control panel (USA: Fit, Fit Sport; Canada: LX, Sport) is pressed, battery voltage is supplied to the rear window defogger relay coil, which energizes the relay. Battery voltage is supplied to the rear window defogger through the energized relay.

The rear window defogger is turned off by pressing the rear window defogger switch a second time.