Rear Window Defogger Control
WARNING: This page is about a different car, the 2011 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
BCM turns rear window defogger relay ON when rear window defogger switch turns ON.
Power supply is supplied to soft top control unit when rear window defogger relay turns ON.
Soft top control unit judges soft top open/close state. Soft top control unit supplies power supply to rear window defogger when soft top is closed. Power supply is not supplied when sift top is open.
Indicator illuminates when rear window switch is pressed while soft top is open and power supply is not supplied to rear window defogger.