Audible Warning Device Control Module: Description and Operation

The Multi-function Alarm Module sounds the Lights-on chime when the following three conditions are met:
^ Battery voltage at Conn C1 terminal "D" indicates that the Park or Headlights are on.
^ 0 volts at Conn C1 terminal "M" indicates that the Ignition Switch is in "OFF," "ACCY," or "LOCK."
^ Ground at Conn C1 terminal "H" indicates that the LH door is open.