Vehicle Security System Alarm Operation

WARNING: This page is about a different car, the 2006 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

The vehicle security system is triggered by:

opening a door
opening the trunk lid
detection of battery disconnect and connect.

Once the vehicle security system is in armed phase, if the smart entrance control unit receives a ground signal at terminal 28 or 29 (door switch) or 38 (trunk room lamp switch), the vehicle security system will be triggered.

The headlamps flash and the horn sounds intermittently.

Power is supplied at all times:

through 15A fuse (No. 39, located in fuse and fusible link box)
to vehicle security lamp relay terminal 3,
through 15A fuse (No. 40, located in fuse and fusible link box)
to vehicle security lamp relay terminal 6,
through 10A fuse (No, 35 located in fuse and fusible link box)
to vehicle security lamp relay terminal 1
through 10A fuse (No. 33, located in fuse and fusible link box)
to horn relay terminals 1 and 5.

When the vehicle security system is triggered, ground is supplied intermittently:

from smart entrance control unit terminal 4
to horn relay terminal 2 and
to vehicle security lamp relay terminal 2.

The headlamps flash and the horn sounds intermittently.

The alarm automatically turns off after about 50 seconds but will reactivate if the vehicle is tampered with again.