Vehicle Security Theft Warning System
VEHICLE SECURITY (THEFT WARNING) SYSTEMSystem 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 doors are 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 all doors are closed and locked. 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.
2. Unlock the doors with the keyfob.
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 headlamps 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.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
- through 10 A fuse [No.19, located in the fuse block (J/B)]
- to combination meter (security indicator lamp) terminal 3 and
- through 50 A fusible link (letter g, located in the fuse and fusible link box)
- to BCM (body control module) terminal 70
- through 10 A fuse [No. 18, located in the fuse block (J/B)]
- to BCM terminal 57
- through 15 A fuse (No. 30, located in the fuse and fusible link box)
- to horn relay terminal 2
- through 20 A fuse (No. 52, located in the IPDM E/R) and
- through 20 A 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 10 A fuse [No. 4, located in the fuse block (J/B)]
- to BCM terminal 11.
Ground is supplied
- to BCM terminal 67
- through body grounds M57, M61 and M79 and
- to IPDM E/R terminals 38 and 59
- through body ground E9, E15 and E24.
INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the vehicle security system is controlled by the doors.
To activate the vehicle security system, BCM must receive signals indicating the doors are closed and locked.
When a door is open, BCM terminal 12, 13, 43, 47 or 48 receives a ground signal from each door switch.
When front door LH or RH is unlocked, BCM terminal 46 receives a signal from terminal 11 of main power window and door lock/unlock switch or terminal 2 of power window and door lock/unlock switch RH.
When the back door is open, BCM terminal 43 receives a ground signal
- from terminal 3 of the back door switch
- through terminal 1 of the back door switch
- through body grounds D406 and D652.
VEHICLE SECURITY SYSTEM ALARM OPERATION
The vehicle security system is triggered by
- opening a door
- 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, 47, 48 (door switch) or terminal 43 (back door switch).
When the vehicle security system is triggered, ground is supplied intermittently
- from IPDM E/R CPU
- to headlamp high relay and
- from IPDM E/R terminal 45
- 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 or keyfob. When the key is used to unlock a door, BCM terminal 7 receives signal
- from terminal 3 of front door lock assembly LH (key cylinder switch) or back door key cylinder switch.
When the BCM receives either one of these signals or unlock signal from keyfob or key cylinder switch, the vehicle security system is deactivated. (Disarmed phase)
PANIC ALARM OPERATION
Remote keyless entry system can 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 CPU
- to headlamp high relay and
- from IPDM E/R terminal 45
- 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.
CAN Communication System Description
Refer to "Information Bus".