DeVille V8-4.6L VIN Y (1998)
Body Control Module: Description and Operation
Interior Lighting Control
The Body Control Module (PZM) provides control for following interior lighting items:
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The courtesy lamps
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The illuminated entry control of the courtesy lamps
The following inputs enable the courtesy lamps:
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The discrete input to the PZM from the door jamb switches
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The RFA transmitter activation (a function of the illuminated entry system)
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Using a key in order to unlock either front door (a function of the illuminated entry system)
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The air bag deployment
The PZM only enables the illuminated entry control of the courtesy lamps when the instrument cluster twilight photocell indicates darkness.
