Antitheft and Alarm Systems: Description and Operation
System DescriptionDESCRIPTION
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 multi-remote controller. (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 multi-remote controller, 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 following operation 1) or 2) is performed, the horn and headlamps operate intermittently for about 2.5 minutes. (At the same time, the system disconnects the starting system circuit.)
1. Engine hood or any door is opened before unlocking door with key or multi-remote controller.
2. Door is opened without first using key or multi-remote controller.
POWER SUPPLY AND GROUND
Power is supplied at all times
- 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 7.5 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
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 (Crew Cab) 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 the doors are locked with key or multi-remote controller and none of the described conditions exist, the vehicle security system will automatically shift to armed phase.
VEHICLE SECURITY SYSTEM ACTIVATION (WITH KEY OR REMOTE CONTROLLER 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 or
- through front door key cylinder switch LH terminal 2
- through body grounds M14 and M68.
If this signal or lock signal from remote controller 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 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
Once the vehicle security system is in armed phase, if the smart entrance control unit receives a ground signal at terminal 1, 2, or 3 (Crew Cab) or 6 (hood switch), the vehicle security system will be triggered. 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 7.5 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 7.5 A fuse (No. 31, located in fuse and fusible link box)
- to vehicle security lamp relay terminal 2.
When the vehicle security system is triggered, power is supplied intermittently
- to vehicle security lamp relay terminal 1
- through smart entrance control unit terminal 39
When the vehicle security system is triggered, ground is supplied intermittently
- to horn relay terminal 2
- through smart entrance control unit terminal 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 remote controller.
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 or
- through front door key cylinder switch LH terminal 2
- through body grounds M14 and M68.
When the smart entrance control unit receives this signal or an unlock signal from remote controller, the vehicle security system is deactivated (disarmed phase).
PANIC ALARM OPERATION
Multi-remote control system may or may not operate vehicle security system (horn and headlamps) as required.
When the multi-remote control system is triggered, power is supplied intermittently
- to vehicle security lamp relay terminal 1
- to smart entrance control unit terminal 39
When the multi-remote control system is triggered, ground is supplied intermittently
- to horn relay terminal 2
- through smart entrance control unit terminal 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 multi-remote controller.