Audible Warning Device: Description and Operation

The Audio Alarm Module generates a single tone for: Lights "ON" Warning, Ignition Key Warning and Fasten Belts Warning.

Lights "ON" Warning
When the Headlamp Switch is in "PARK" or "HEAD," voltage is applied to the Lights "ON" Input of the Audio Alarm Module. When the Ignition Switch is turned out of the "RUN" position, voltage is removed from the Ignition Switch Input of the Audio Alarm Module. When voltage is present at the Lights "ON" Input and no voltage applied to the Ignition Switch Input, the Audio Alarm Module will sound the Lights "ON" Warning.

Ignition Key Warning
The Audio Alarm 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 Audio Alarm Module senses a voltage drop at the Ignition Key Input and will sound the Ignition Key Warning.

Fasten Belts Warning
The Audio Alarm Module applies voltage to the Seat Belt Switch at all times. The Audio Alarm 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 Audio Alarm Module senses voltage at the Seat Belt Input. When the Ignition Switch is turned to "RUN," voltage is applied to the Audio Alarm Module Ignition Switch Input. When voltage is present at the Ignition Switch Input and zero volt at the Seat Belt Input, the Audio Alarm Module will sound the Fasten Belts Warning for 5 to 8 seconds. If voltage is present at the Ignition Switch Input and the Seat Belt Input, the Audio Alarm Module will disable the Fasten Belts Warning.

When the Ignition Switch is turned to "RUN," the Audio Alarm Module senses voltage at the Ignition Switch Input. When voltage is applied to the Ignition Switch Input, the Audio Alarm Module applies voltage to the Fasten Belts Indicator for 5 to 8 seconds independent of the Seat Belt Switch and Fasten Belts Warning.

The Audio Alarm Module generates a single tone for: Lights "ON" Warning, Ignition Key Warning and Fasten Belts Warning.

Lights "ON" Warning
When the Headlamp Switch is in "PARK" or "HEAD," voltage is applied to the Lights "ON" Input of the Audio Alarm Module. When the Ignition Switch is turned out of the "RUN" position, voltage is removed from the Ignition Switch Input of the Audio Alarm Module. When voltage is present at the Lights "ON" Input and no voltage applied to the Ignition Switch Input, the Audio Alarm Module will sound the Lights "ON" Warning.

Ignition Key Warning
The Audio Alarm 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 Audio Alarm Module senses a voltage drop at the Ignition Key Input and will sound the Ignition Key Warning.