System Description

VEHICLE SECURITY (THEFT WARNING) SYSTEM


System Description


DESCRIPTION

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 any door 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 (security lamp illuminates) when the BCM receives LOCK signal from front door key cylinder switch, keyfob or Intelligent Key after all doors are closed.
- All doors are closed after front doors are locked by key or door lock and unlock switch.
The security indicator lamp illuminates for 30 seconds. then, the system automatically shifts into the "armed" phase.

Canceling the set vehicle security system
The armed phase is canceled when the driver unlocks the doors with the key, keyfob or Intelligent Key.

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 horn and flashes the headlamps for about 50 seconds.
1. Any door is opened before unlocking door with key, keyfob or Intelligent Key.
2. Door is unlocked without using key, keyfob or Intelligent Key.

POWER SUPPLY AND GROUND

Power is supplied at all times
- through 10A fuse [No.19, located in the fuse block (J/B)]
- to combination meter terminal 1 (security indicator lamp)
- through 50A fusible link (letter j, located in the fuse and fusible link box)
- to BCM terminal 70
- through 10A fuse [No. 21, located in the fuse block (J/B)]
- to BCM terminal 57
- through 10A fuse (No. 25, located in the fuse and fusible link box)
- to horn relay terminal 2
- through 15A fuse (No. 52, located in the IPDM E/R)
- to IPDM E/R internal CPU
- through 20A fuse (No. 53, 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 10A fuse [No. 6, located in the fuse block (J/B)]
- to BCM terminal 11.

With the ignition switch in the ON or START position, power is supplied
- through 10A fuse [No. 12, located in the fuse block (J/B)]
- to BCM terminal 38.

Ground is supplied
- to BCM terminal 67
- through body grounds M57 and M61.

INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the vehicle security system is controlled by the doors and trunk.
To activate the vehicle security system, BCM must receive signals indicating the ignition switch is OFF, doors and trunk are closed and locked.
When a door or trunk is open, BCM terminal 12, 13, 42, 47 or 48 receives a ground signal from each switch.
When front door LH is unlocked, BCM terminal 46 receives a signal from terminal 11 (without Automatic Close
Power Window) or terminal 2 (with Automatic Close Power Window) of main power window and door lock/unlock switch.
When front door RH is unlocked, BCM terminal 46 receives a signal from terminal 2 of power window and door lock/unlock switch RH.

VEHICLE SECURITY SYSTEM ALARM OPERATION
The vehicle security system is triggered by
- opening a door
- opening the trunk
- unlocking door or trunk without using the key, keyfob or Intelligent Key.
The vehicle security system will be triggered once the system is in armed phase, � when BCM receives a ground signal at terminals 12, 13, 47, 48 (front or rear door switch), or terminal 42
(trunk switch).
When the vehicle security system is triggered, ground is supplied intermittently
- from IPDM E/R terminal 13
- 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 must be unlocked with the key, keyfob or Intelligent Key.
When the key is used to unlock the driver door, BCM terminal 7 receives signal
- from terminal 5 of the front door key cylinder switch LH.
When the BCM receives this signal or unlock signal from keyfob or Intelligent Key or front door key cylinder switch LH, the vehicle security system is deactivated. (Disarmed phase)

PANIC ALARM OPERATION
Intelligent Key and 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 13
- to horn relay terminal 1.
The headlamp flashes and the horn sounds intermittently.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from keyfob or Intelligent
Key.