Lumina V6-191 3.1L VIN T MFI (1993)
Audible Warning Device: Description and Operation
CIRCUIT OPERATION
The Chime Module generates three audible warnings which are: Lights "ON" Warning, Ignition Key Warning and Fasten Belts Warning. The
Lights "ON" Warning is a tone pulsed approximately once every one half second, sounding the quickest. The Ignition Key Warning is a tone
pulsed once every second. The Fasten Belts Warning is a continuous tone.
LIGHTS "ON" WARNING
When the Headlight Switch is in "PARK" or "HEAD," voltage is applied to the Lights "ON" Input of the Chime Module. When the Ignition
Switch is turned out of the "RUN" position, voltage is removed from the Ignition Switch Input of the Chime Module. When voltage is present at
the Lights "ON" Input and no voltage applied to the Ignition Switch Input, the Chime Module will sound the Lights "ON" Warning.
IGNITION KEY WARNING
The Chime Module applies voltage at all times to the Ignition Key Warning Switch. When the Ignition Key is placed into the Ignition Switch, the
Ignition Key Warning Switch is closed. When the LH front door is open, the LH Front Door Jamb Switch closes the circuit to ground. The Chime
Module senses a voltage drop at the Ignition Key Input and will sound the Ignition Key Warning.
FASTEN BELTS WARNING
The Chime Module applies voltage to the Seat Belt Switch at all times. The Chime Module senses a voltage drop at the Seat Belt Input through the
closed contacts of the Seat Belt Switch when the driver's seat belt is unlatched. When the driver's seat belt is latched, the Seat Belt Switch is
opened and the Chime Module senses voltage at the Seat Belt Input. When the Ignition Switch is turned to "RUN," voltage is applied to the Chime
Module Ignition Switch Input. When voltage is present at the Ignition Switch Input and zero volt at the Seat Belt Input, the Chime Module will
sound the Fasten Belts Warning for 4 to 8 seconds. If voltage is present at the Ignition Switch Input and the Seat Belt Input, the Chime Module
will disable the Fasten Belts Warning.
