Vehicle Security (Theft Warning) System

System Description

DESCRIPTION

Operation Flow:

Operation Flow

Setting the vehicle security system

Initial condition
- Ignition switch is in OFF position.

Disarmed phase
- When the vehicle is being driven or when doors or trunk lid is open, the vehicle security system is set in the disarmed phase on the assumption that the owner is inside or near the vehicle.

Pre-armed phase and armed phase
- The vehicle security system turns into the "pre-armed" phase when hood, trunk lid and all doors are closed and locked by electronic key. The security indicator lamp illuminates for 30 seconds. then, the system automatically shifts into the "armed" phase.

Canceling the set vehicle security system
When one of the following operations is performed, the armed phase is canceled.
1. Unlock the doors with the key or the keyfob.
2. Open the trunk lid with the key or the keyfob. When the trunk lid is closed after opening the trunk lid with the keyfob, the system returns to the armed phase.

Activating the alarm operation of the vehicle security system
Make sure the system is in the armed phase.

When one of the following operations is performed, the system sounds the horns and flashes the head-lamps for about 50 seconds.
1. Any door is opened before unlocking door with key or keyfob.
2. Door is unlocked without using key or keyfob.
3. Trunk lid is opened without using key or keyfob.

POWER SUPPLY
Power is supplied at all times
- through 10 A fuse [No.19, located in the fuse block (J/B)]
- to security indicator lamp terminal 1 and
- through 50 A fusible link (letter f, located in the fuse and fusible link box)
- to BCM terminal 55
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to BCM terminal 42
- through 15 A fuse (No. 25, located in the fuse and fusible link box)
- to horn relay terminal 2
- through 15 A fuse (No. 34, located in the IPDM E/R)
- to IPDM E/R internal CPU.

With the ignition switch in the ACC or ON position, power is supplied
- through 10 A fuse [No. 6, located in the fuse block (J/B)]
- to BCM terminal 11.

INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the vehicle security system is controlled by the doors and trunk lid.

To activate the vehicle security system, BCM must receive signals indicating the doors and trunk lid are closed and the doors are locked.

When a door is open, BCM terminal 12, 13, 62 or 63 receives a ground signal from each door switch.

When front door LH is unlocked, BCM terminal 22 receives a signal from terminal 14 of main power window and door lock/unlock switch.

When front door RH or either rear door is unlocked, BCM terminal 22 receives a signal from terminal 16 of power window and door lock/unlock switch RH or the rear power window switch LH or RH.

When the trunk lid is open, BCM terminal 57 receives a ground signal
- from terminal 2 of the trunk lamp and trunk release solenoid switch
- through body grounds B7 and B19.

VEHICLE SECURITY SYSTEM ALARM OPERATION
The vehicle security system is triggered by
- opening a door
- opening the trunk lid
- unlocking door without using the key or keyfob.

The vehicle security system will be triggered once the system is in armed phase,
- when BCM receives a ground signal at terminals 12, 13, 62, 63 (door switch), or terminal 57 (trunk lamp switch and trunk release solenoid).

Power is supplied at all times
- to horn relay terminal 2
- through 15 A fuse (No. 25, located in fuse and fusible link box).

When the vehicle security system is triggered, ground is supplied intermittently
- from IPDM E/R terminal 51
- to horn relay terminal 1.

The headlamps flash and the horn sounds intermittently.

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

VEHICLE SECURITY SYSTEM DEACTIVATION
To deactivate the vehicle security system, a door or the trunk lid must be unlocked with the key or keyfob.

When the key is used to unlock a door, BCM terminal 22 receives signal
- from terminal 14 of the main power window and door lock/unlock switch.

When the BCM receives either one of these signals or unlock signal from keyfob or front door lock assembly LH (key cylinder switch), the vehicle security system is deactivated. (Disarmed phase)

PANIC ALARM OPERATION
Remote keyless entry system may or may not operate vehicle security system (horn and headlamps) as required.

When the remote keyless entry system is triggered, ground is supplied intermittently
- from IPDM E/R terminal 51
- to horn relay terminal 1.

The headlamp flashes and the horn sounds intermittently.

The alarm automatically turns off after 50 seconds or when BCM receives any signal from keyfob.

CAN Communication System Description
Refer to Information Bus.