Antitheft and Alarm Systems: Description and Operation
VEHICLE SECURITY (THEFT WARNING) SYSTEM
1.Operation Flow
2.Setting the Vehicle Security System Initial condition
1. Close all doors.
2. Close hood.
Disarmed phase
The vehicle security system is in the disarmed phase when any door(s) or hood is opened. The security indicator lamp blinks every second.
Pre-armed phase and armed phase
The vehicle security system turns into the "pre-armed" phase when hood and all doors are closed and the doors are locked by key or keyfob. (The security indicator lamp illuminates.) After about 30 seconds, the system automatically shifts into the "armed" phase (the system is set). (The security indicator lamp blinks every 2.6 seconds.)
3.Canceling the Set Vehicle Security System
When the doors are unlocked with the key or keyfob, the armed phase is canceled.
4.Activating the Alarm Operation of the Vehicle Security System
Make sure the system is in the armed phase. (The security indicator lamp blinks every 2.6 seconds.)
When the engine hood or any door is opened before unlocking door with key or keyfob the horn, and headlamps operate intermittently for about 50 seconds. (At the same time, the system disconnects the starting system circuit.)
POWER SUPPLY AND GROUND
Power is supplied at all times
- through 15 A fuse [No. 37, located in the fuse block (J/B)]
- to vehicle security lamp relay terminal 7.
- through 15 A fuse [No. 38, located in the fuse block (J/B)]
- to security lamp relay terminal 5.
- through 7.5 A fuse [No. 28, located in the fuse block (J/B)]
- to smart entrance control unit terminal 49
- to key switch terminal 1 and
- to security indicator lamp terminal 1.
With the ignition switch in the ACC or ON position, power is supplied
- through 7.5 A fuse [No. 20, located in the fuse block (J/B)]
- to smart entrance control unit terminal 26.
With the ignition switch in the ON or START position, power is supplied
- through 10 A fuse [No. 5, located in the fuse block (J/B)]
- to smart entrance control unit terminal 27.
Ground is supplied
- to smart entrance control unit terminals 43 and 64
- through body grounds M14 and M68.
INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the vehicle security system is controlled by the doors and hood.
To activate the vehicle security system, the smart entrance control unit must receive signals indicating the doors and hood are closed and the doors are locked.
When a door is open, smart entrance control unit terminal 1, 2, or 3 receives a ground signal from the corresponding door switch.
When the hood is open, ground is supplied
- to smart entrance control unit terminal 6
- through hood switch terminal +
- through hood switch terminal -
- through body grounds E12 and E54.
When smart entrance control unit receives lock signal from key cylinder or keyfob and none of the described conditions exist, the vehicle security system will automatically shift to armed phase.
VEHICLE SECURITY SYSTEM ACTIVATION (WITH KEY OR KEYFOB USED TO LOCK DOORS)
If the key is used to lock doors, ground is supplied to smart entrance control unit terminal 11
- through front door key cylinder switch LH terminal 1
- through front door key cylinder switch LH terminal 2
- through body grounds M14 and M68 or
- through back door key cylinder switch terminal 1
- through back door key cylinder switch terminal 2
- through body grounds D402 and D404.
If this signal or lock signal from keyfob is received by the smart entrance control unit, the vehicle security system will activate automatically.
Once the vehicle security system has been activated, smart entrance control unit terminal 38 supplies ground to security indicator lamp terminal 2.
The security indicator lamp will illuminate for approximately 30 seconds and then blink. The vehicle security system is now in armed phase.
VEHICLE SECURITY SYSTEM ALARM OPERATION
The vehicle security system is triggered by
- opening a door
- opening the hood
- unlocking door without using a key or keyfob.
Once the vehicle security system is in armed phase, if the smart entrance control unit receives a ground signal at terminal 1, 2, 3 (door switch) or 6 (hood switch), the horn and headlamps operate intermittently and the starting system is interrupted.
With the ignition switch in the ON or START position, power is supplied
- through 10 A fuse [No. 5, located in the fuse block (J/B)].
- to vehicle security relay terminal 2.
If the vehicle security system is triggered, ground is supplied
- to vehicle security relay terminal 1
- through smart entrance control unit terminal 40.
With power and ground supplied, starter motor circuit is interrupted. The starter motor will not crank and the engine will not start.
Power is supplied at all times
- through 15 A fuse (No. 37, located in fuse and fusible link box)
- to vehicle security lamp relay terminal 7.
- through 15 A fuse (No. 38, located in fuse and fusible link box)
- to vehicle security lamp relay terminal 5.
- through 15 A fuse (No. 32, located in fuse and fusible link box)
- to horn relay terminals 2.
When the vehicle security system is triggered, ground is supplied intermittently
- to vehicle security lamp relay terminal 1
- to horn relay terminal 1
- through smart entrance control unit terminals 39 and 42.
The horn and headlamps operate 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 the door, smart entrance control unit terminal 10 receives a ground signal
- through front door key cylinder switch LH terminal 3
- through front door key cylinder switch LH terminal 2
- through body grounds M14 and M68 or
- through back door key cylinder switch terminal 3
- through back door key cylinder switch terminal 2
- through body grounds D402 and D404.
When the smart entrance control unit receives this signal or an unlock signal from keyfob, the vehicle security system is deactivated. (Disarmed phase)
PANIC ALARM OPERATION
When the remote keyless entry system is triggered, ground is supplied intermittently
- to vehicle security lamp relay terminal 1 and
- to horn relay terminal 2
- through smart entrance control unit terminals 39 and 42.
The horn and headlamps operate intermittently.
The alarm automatically turns off after 30 seconds or when smart entrance control unit receives any signal from keyfob.