Heated Glass Element: Description and Operation
REAR DEFOGGERWhen the ignition switch is turned to the RUN position, voltage is applied from the HVAC Fuse to the reat window defogger relay and the heater-A/C control. The rear window defogger relay receives battery voltage from the REAR DEFOG circuit breaker. When the rear defogger switch is pressed, voltage is momentarily applied to the solid state timer, sending a ground signal to the rear window defogger relay which in turn controls the rear window defogger. This relay will remain closed until the defog cycle is complete or the rear defogger switch is pressed a second time When the ignition switch is turned to the RUN position and the rear defogger switch is pressed for the First time the defog cycle lasts 10 minutes and further operation will result in 5 minute defog cycles.
The defog cycle is reset to 10 minutes when the ignition switch is turned to the OFF position and back to the RUN position. The defogger ON indicator is an LED that illuminates when the rear defogger is on.
OUTSIDE REARVIEW MIRRORS
When the ignition switch is in the RUN position and the rear defogger switch is in the ON position. voltage is supplied to circuit 293 from the rear window defogger relay. Voltage from circuit 293 is then applied to the HEATED MIRROR fuse. From the HEATED MIRROR Fuse voltage is applied to the outside rearview mirrors through circuit 267. This causes the defogger within the outside rearview mirrors to defog the mirrors. The defog cycle is the same as described above concerning the rear defogger.