Vehicle Security System: Component Description
ITEM FUNCTION CHART
| Item | Function |
|---|---|
| BCM | Verifies the received signal from ignition key, then informs ECM whether to allow engine start. |
| Door switch | Provides the BCM with the status of each monitored door. |
| Security indicator | Indicates the status of the security system. |
| IPDM E/R | Controls the horn and headlamps operation. |
| Horn | Sounds when the vehicle security system is triggered. |