Town Car V8-4.6L VIN W (1997)
occupants and luggage are removed from the vehicle.
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When the ignition switch is turned to RUN, Circuit 295 (LB/BK) is supplied B+.
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If there is an open in Circuit 1053 (LB/PK) or in its feed circuits, the control module will be inoperative and diagnostics cannot be entered.
Door Courtesy Lamp Switch Input
System responds to lamp switch as follows:
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The control module uses the door courtesy lamp switch input for two different functions:
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preventing vents when a door is open to avoid the possibility of the vehicle lowering and the door catching on an obstruction.
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servicing a correction immediately, if needed.
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The control module cannot sense which doors are open, only that one or more doors are open, or all doors are closed.
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If a damaged door lamp switch (always open) or a short to battery in Circuit 344 (BK/Y) exists, the control module will interpret that a door is
open and not vent unless vehicle speed is above 24 km/h (15 mph).
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Above 24 km/h (15 mph) the control module disregards all door signals.
