Alarm Horn: Description and Operation

Theft Deterrent / Horns
When the theft deterrent system is activated, the relay in the ECU turns ON and OFF cycles of approximately 0.2 Sec., causing the theft deterrent horn to blow.

When the theft deterrent system is activated, it causes the Tr in the ECU to switch ON and OFF in cycles.

This switches the horn relay ON and OFF, thus the horns blow.

In this condition, if any of the following operations is done, the relay in the ECU turns OFF thus stopping the theft deterrent horn from blowing:

1. Unlock the front LH or RH door with a key.
2. Turn the ignition switch to ACC or ON position.
3. Unlock the doors with the wireless door lock control system.
4. Wait for approximately 60 seconds.
5. Push the panic switch of the wireless door lock control system.