Alarm Led
The alarm diode is an LED used to indicate alarm status. The diode sits in the same housing as the sun sensor and twilight sensor. The diode is directly connected to the central electronic module (CEM).
The diode flashes about once every three seconds when the alarm is armed. If the alarm has been triggered, the diode will flash rapidly the next time the vehicle is unlocked. It will continue flashing until the remote key is inserted in the start unit.
There are diagnostics for the alarm diode.