Alarm Horn: Description and Operation

Circuit Description
The ETACM controls the keyless entry and burglar alarm system.

Burglar Alarm Operations
When the ETACM receives abnormal input signals (for instance, hood switch signal, left/right door unlock switch signal, tail gate unlock switch signal, etc.), the hazard relay coil is energized through the ETACM and battery voltage is supplied to the turn signal lamps. And the ETACM controls the siren.