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Home >> Cadillac >> 2004 >> DeVille Protection Series >> Repair and Diagnosis >> Body & Frame >> Windows >> Door System, Mirror System & Window System >> Description and Operation >> Power Windows Description and Operation >> Rear Window Lockout Feature
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Rear Window Lockout Feature

The lockout feature is used to prevent both rear windows from being operated from their locally mounted switches. The rear window lockout switch is built into, and receives battery voltage and ground from, the Driver Door Switch Assembly (DDSA). When the lockout switch is pressed momentarily, the lockout switch contacts are briefly closed, the LED indicator is illuminated, and the DDSA receives the switch signal. The DDSA interprets the switch signal and sends it on, via class 2 serial data message, to the left rear door module (LRDM) and the right rear door module (RRDM). The LRDM and RRDM then prohibit the rear windows from being operated from the rear door window switches. When the lockout feature has been activated, both rear door windows can still be operated from the driver door by using the window switches built into the DDSA.