Antitheft and Alarm Systems: Description and Operation

OPERATION FLOW

SETTING THE THEFT WARNING SYSTEM
Initial condition
(a) Close all doors.
(b) Close hood and trunk lid.
(c) Pull key out of ignition.

Disarmed phase
The theft warning system is in the disarmed phase when any door(s), hood or trunk lid is open and the ignition key is not in the ACC or ON position. The security indicator lamp blinks every 0.5 seconds. When the ignition key is turned to the ACC or ON position, the security indicator lamp turns off.
Pre-armed phase and armed phase
The theft warning system turns into the "pre-armed" phase when hood, trunk lid and all doors are closed and 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 2.5 seconds.)

CANCELLING THE SET THEFT WARNING SYSTEM
When the following (a) or (b) operation is performed, the armed phase is canceled.
(a) Unlock the doors or the trunk lid with the key or multi-remote controller.
(b) Open the trunk lid with the key. When trunk lid is closed after opening the trunk lid with the key, the system returns to the armed phase.

ACTIVATING THE ALARM OPERATION OF THE THEFT WARNING SYSTEM
Make sure the system is in the armed phase. (The security indicator lamp blinks every 2.6 seconds.)
When any of the following operations (a), (b) or (c) are performed, the system sounds the horns and flashes the headlamps for about 2.5 minutes. After 2.5 minutes the security indicator lamp will turn off. (At the same time, the system disconnects the starting system circuit.)
The starting system is kept dead even after the alarm turns off.
(a) Engine hood or trunk lid is opened before unlocking door with key or multi-remote controller.
(b) Door is unlocked without using key or multi-remote controller.
(c) Key cylinder is pulled out from either front door or the trunk lid.

POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times:
^ through 7.5 A fuse [No. (15), located in the fuse block (J/B)]
^ to security indicator lamp terminal (37)
^ to key switch terminal (1).
When the key switch is ON (ignition key is inserted in key cylinder), power is supplied:
^ though key switch terminal (2)
^ to smart entrance control unit terminal (24).
Power is supplied at all times:
^ through 25 A fusible link (letter (f), located in the fuse and fusible link box)
^ to circuit breaker terminal (1)
^ through circuit breaker terminal (2)
^ to smart entrance control unit terminal (1).
With the ignition switch in the ACC or ON position, power is supplied:
^ through 15 A fuse [No. (10), located in the fuse block (J/B)]
^ to smart entrance control unit terminal (17).
With the ignition switch in the ON or START position, power is supplied:
^ through 7.5 A fuse [No. (8), located in the fuse block (J/B)]
^ to smart entrance control unit terminal (11).
Ground is supplied:
^ to smart entrance control unit terminal (10)
^ through body grounds (M43), (M44) and (M60).

THEFT WARNING SYSTEM ACTIVATION (Without key or remote controller used to lock doors)
The operation of the theft warning system is controlled by the doors, hood and trunk lid.
To activate the theft warning system, the ignition key must be removed, doors, hood and trunk closed, and the doors locked.
When a door is open, smart entrance control unit terminals (15), (16), or (35) receives a ground signal from door switches.
When a door is unlocked, smart entrance control unit terminal (12), (13) or (14) receives a ground signal:
^ from terminal (4) of all the door unlock sensors
^ through terminal (2) of all the door unlock sensors
^ through body grounds (M43), (M44) and (M60) for the front doors and
^ through body grounds (B14) and (B17) for the rear doors.
When the hood is open, smart entrance control unit terminal (29) receives a ground signal:
^ from terminal (1) of the hood switch
^ through body grounds (E13) and (E25).
When the trunk lid is open, smart entrance control unit terminal (26) receives a ground signal:
^ from terminal (1) of the trunk room lamp switch
^ through body grounds (T9) and (T10).
If none of the described conditions exist, the theft warning system will activate automatically.

THEFT WARNING SYSTEM ACTIVATION (With key or remote controller used to lock doors)
If the key or remote controller is used to lock doors, terminal (30) receives a ground signal:
^ from terminal (1) of the door key cylinder switch LH
^ from terminal (2) of the door key cylinder switch RH
^ through body grounds (M43), (M44) and (M60).
If this signal is received by the smart entrance control unit, the theft warning system will activate automatically.
With the theft warning system activated, smart entrance control unit terminal (33) supplies ground to the security indicator lamp.

THEFT WARNING SYSTEM OPERATION
The theft warning system is triggered by:
^ opening a door or trunk lid without using the key
^ opening the hood
^ tampering with the key cylinder in the door
Once the theft warning system has been activated, it will be triggered if the smart entrance control unit receives a ground signal at terminals (15), (16), (26), (29), or (35). Also, when a door key tamper signal is received at the smart entrance control unit, the system will be triggered. The headlamps flash, the horn sounds intermittently, and the starting system is interrupted.
When a door key cylinder switch has been tampered with, smart entrance control unit terminal (28) receives a ground signal:
^ from terminal (3) of the front LH or RH door key cylinder switches
^ through body grounds (M43), (M44) and (M60).
If the theft warning system is triggered, ground is supplied:
^ from terminal (32) of the smart entrance control unit
^ to theft warning relay terminal (2).
With power and ground supplied, power to the clutch interlock relay (M/T models) or inhibitor relay (A/T models) is interrupted. The starter motor will not crank and the engine will not start.
When the theft warning system is triggered, ground is supplied intermittently:
^ from terminal (8) of the smart entrance control unit
^ to theft warning lamp relay terminal (2) and
^ to horn relay-2 terminal (2).
The headlamps flash and the horn sounds intermittently.
The alarm automatically turns off after 2 or 3 minutes but will reactivate if the vehicle is tampered with again.

THEFT WARNING SYSTEM DEACTIVATION
To deactivate the theft warning system, a door or the trunk lid must be unlocked with the key or remote controller.
When the key is used to unlock a door, smart entrance control unit terminal (31) receives a ground signal:
^ from terminal (2) of the door key cylinder switch LH
^ from terminal (1) of the door key cylinder switch RH.
When the key is used to unlock the trunk lid, smart entrance control unit terminal (27) receives a ground signal from terminal (1) of the trunk key cylinder switch.
When the smart entrance control unit receives either one of these signals, the theft warning system is deactivated.

PANIC ALARM OPERATION
Multi-remote control system may or may not operate theft warning system (horn and head lamps) as required.
When the multi-remote control system is triggered, ground is supplied intermittently:
^ from smart entrance control unit terminal (8)
^ to theft warning lamp relay terminal (2) and
^ to horn relay-2 terminal (2).
The headlamp flashes and the horn sounds intermittently:
The alarm automatically turns off after 30 seconds or when smart entrance control unit receives any signal from multi-remote controller.