Contents Wiring diagrams Section: Sun Roof/t-Top/convertible Top All sections

Sunroof: Overview Hummer H3 I

Circuit/System Description

The sunroof motor/actuator supplies voltage to the contacts of the sunroof switch through the sunroof switch close signal circuit and the sunroof switch open signal circuit. When the switch is operated, the contacts and signal circuit for the selected mode are closed to ground, the voltage is pulled low in the sunroof motor/actuator and the appropriate signal is recognized. The sunroof motor/actuator then internally applies battery positive voltage and ground to the appropriate circuits of the reversible power sunroof motor in order to move the sunroof glass panel to the open, close or vent position.