Warning Systems: Operation

Battery voltage for module operation is supplied to three pins. When the key is in the ignition switch, voltage is present at pin 7. See WIRING DIAGRAMS  . Pin 8 receives voltage from the light switch whenever the headlights or parking lights are ON. Pin 1 receives voltage when the ignition switch is in the RUN or START position.

To sound the seat belt warning, the module needs:

• Battery voltage at the ignition switch input.
• A ground at the seat belt switch.

This occurs when the seat belt switch is closed because the driver's seat belt is not buckled. The "fasten belt" light will also turn on along with the warning sound.

To sound the "key in ignition" alarm, both the ignition key warning switch and the driver's door jamb switch must be closed. This condition grounds pin 6 of the module. These switches are closed when the driver's door is open and the key is in the ignition.

The "lights on" warning sounds when:

• Voltage is present at the "lights on" input.
• Voltage is not present at the ignition switch input
• Driver's door jamb switch is closed (door is open).

If any of these change, lights off or ignition on, the "lights on" warning buzzer sound will stop.