Bonneville V8-4.6L VIN Y (2004)
Sunroof / Moonroof Limit Switch: Description and Operation
LIMIT SWITCH
The limit switch is part of the sunroof motor assembly and is to signal the sunroof module when the sunroof glass is closed flush with the roof or when it
reaches the comfort stop during the express open feature.
As the limit switch closes, the sunroof limit switch low reference circuit is applied to the sunroof limit switch soft stop signal circuit, pulling the 12 volt
reference down to 0 volts. The 0 volts at the sunroof limit switch soft stop signal input indicates that the sunroof glass has either reached the flush close
or the comfort stop position and that the voltage will be removed from the motor control circuits.
