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Home >> Toyota >> 2017 >> Corolla LE >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Theft Deterrent / Keyless Entry System - Diagnostics & Circuit Tests (Model Code: ZRE172) >> Theft Deterrent System >> System Description [08/2013 - ] >> System Description [08/2013 - ]
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System Description [08/2013 - ]

  1. OUTLINE OF THEFT DETERRENT SYSTEM 
    • The theft deterrent system can be set/canceled by locking/unlocking the doors using any of the following operations:
      • Entry lock operation*1
      • Wireless lock operation
      • Key linked lock operation
      • By opening and closing the doors*2
        • *1: w/ Smart Key System
        • *2: Only when setting the theft deterrent system.
    • The alarm function will be activated when someone attempts to forcibly unlock any of the doors or open any of the doors, engine hood or luggage compartment door while the system is in the armed state.
    • In the alarm sounding state, the system illuminates the interior lights and blinks the turn signal lights, the headlights and taillights. At the same time, the system sounds the vehicle horn and security horn assembly to deter break-in and theft as well as to warn people around the vehicle.

      HINT: 

      The interior lights are illuminated if the interior light door switch in the map light assembly and No. 1 room light assembly is on.

    • The theft deterrent system has an active arming mode. There are 4 states in this mode; a disarmed state, an arming preparation state, an armed state and an alarm sounding state.
    1. Disarmed state:
      • The alarm function is not operating.
      • The theft deterrent system is not operating.
    2. Arming preparation state:
      • The time until the system goes into the armed state.
      • The theft deterrent system is not operating.
    3. Armed state:
      • The theft deterrent system is operating.
    4. Alarm sounding state:
      • The alarm function is operating.

      Alarm time

      Approx. 57 seconds

      ALARM METHODS AND TIME

      Alarm Method Headlights Blinking
      Taillights Blinking
      Turn Signal Lights Blinking
      Interior Lights Illuminating
      Vehicle Horn Sounding
      (approx. 0.4-second cycles)
      Security Horn Assembly Sounding
      (approx. 0.4-second cycles)
      Alarm Time Approx. 57 seconds
  2. FUNCTION OF MAIN COMPONENTS 
    Component Function
    Security indicator light Informs driver of theft deterrent system status.
    Security horn assembly Sounds when attempted break-in or theft is detected.
    Headlights Blink when attempted break-in or theft is detected.
    Taillights
    • Blink when attempted break-in or theft is detected.
    • Come on when theft deterrent system has entered alarm sounding state.
    Turn signal lights Blink when attempted break-in or theft is detected.
    Interior lights Come on when attempted break-in or theft is detected.
    Vehicle horn Sounds when attempted break-in or theft is detected.
    • Front door courtesy light switch assembly (for LH/RH)
    • Rear door courtesy light switch assembly (for LH/RH)
    		 Detects door status (open or closed).
    Door unlock detection switch Detects door status (locked or unlocked).
    Engine hood courtesy switch (Hood lock assembly) Detects engine hood status (open or closed).
    Luggage compartment door lock assembly Detects luggage compartment door status (open or closed).
    Certification ECU (Smart key ECU assembly)*1
    • Receives wireless door lock/unlock signal.
    • Receives entry door lock/unlock signal.
    Main body ECU (Multiplex network body ECU)*2 Receives wireless door lock/unlock signal.
    • *1: w/ Smart Key System
    • *2: w/o Smart Key System
  3. ACTIVE ARMING MODE 
    1. This system operates as described in the diagram below when one of the items for each condition is met.

      HINT: 

      The term "all doors" used in this section refers to the driver door, front passenger door, rear door LH and rear door RH.

      GTY318862Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      W/ SMART KEY SYSTEM

      Condition Item
      Condition [1] In disarmed state 1, when the engine switch is off, the system state is switched if the following condition is met:
      • With all doors, the engine hood and luggage compartment door closed, all doors are locked by wireless operation, the smart key system or key linked power door lock operation.

      In disarmed state 1, when the engine switch is off, the engine hood and luggage compartment door are closed and all doors are locked, the system state is switched if the following condition is met:
      • All doors are closed when any door is open.
      Condition [2]
      • Allow approx. 30 seconds to elapse.
      Condition [3]
      • All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation.
      • Any door is unlocked.
      • Any door is opened.
      • The engine switch is pushed.
      • The engine switch is turned on (ACC) or on (IG).
      • The battery is reconnected.
      Condition [4]
      • The engine hood is opened when the engine hood is closed.
      • The luggage compartment door is opened when the luggage compartment door is closed.
      • The battery is reconnected.
      • Any door is opened when all doors are closed.
      • Any door is unlocked when all doors are locked.
      • When 5 seconds or more have elapsed after the engine switch is pressed, the power source mode is changed from off to on (IG) without pressing the engine switch.
      Condition [5]
      • The engine switch is turned on (IG) and the engine is running at 550 rpm for 2 seconds or more.
      • All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation.
      • The engine switch is turned on (ACC) or on (IG) within 5 seconds after the engine switch is pushed.
      Condition [6]
      • After approx. 57 seconds, the alarm stops and the system returns to the armed state.
      Condition [7]
      • The luggage compartment door is opened by wireless operation, the smart key system or key linked power door lock operation.
      Condition [8]
      • The luggage compartment door is closed when the engine hood is closed.
      • The engine hood is closed when the luggage compartment door is closed.
      Condition [9]
      • Any door is unlocked when all doors are locked.
      • Any door is opened.
      • The engine switch is pushed.
      • The engine switch is turned on (ACC) or on (IG).
      • The battery is reconnected.
      • All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation.
      Condition [10] In disarmed state 1, when the engine switch is off, the system state is switched if the following condition is met:
      • With all doors closed and the engine hood or the luggage compartment door open all doors are locked by wireless operation, the smart key system or key linked power door lock operation.

      In disarmed state 1, when the engine switch is off, the engine hood or the luggage compartment door are open and all doors are locked, the system state is switched if the following condition is met:
      • All doors are closed when any door is open.
      Condition [11]
      • The engine hood is opened.
      • The luggage compartment door is opened.
      • The luggage compartment door is opened by wireless operation or the smart key system.
      W/O SMART KEY SYSTEM

      Condition Item
      Condition [1] In disarmed state 1, when the ignition switch is off, the system state is switched if the following condition is met when the key is not in the ignition key cylinder:
      • With all doors, the engine hood and luggage compartment door closed, all doors are locked by wireless operation or key linked power door lock operation.

      In disarmed state 1, when the ignition switch is off, the engine hood and luggage compartment door are closed and all doors are locked, the system state is switched if the following condition is met when the key is not in the ignition key cylinder:
      • All doors are closed when any door is open.
      Condition [2]
      • Allow approx. 30 seconds to elapse.
      Condition [3]
      • All doors are unlocked by wireless operation or key linked power door lock operation.
      • Any door is unlocked.
      • Any door is opened.
      • Key is in the ignition key cylinder.
      • The ignition switch is turned to ACC or ON.
      • The battery is reconnected.
      Condition [4]
      • The engine hood is opened when the engine hood is closed.
      • The luggage compartment door is opened when the luggage compartment door is closed.
      • The battery is reconnected.
      • Any door is opened when all doors are closed.
      • Any door is unlocked when all doors are locked.
      • The ignition switch is turned to ON when the key is not in the ignition key cylinder.
      Condition [5]
      • The ignition switch is turned to ON and the engine is running at 550 rpm for 2 seconds or more.
      • All doors are unlocked by wireless operation or key linked power door lock operation.
      • The ignition switch is turned to ACC or ON when the key is in the ignition key cylinder.
      Condition [6]
      • After approx. 57 seconds, the alarm stops and the system returns to the armed state.
      Condition [7]
      • The luggage compartment door is opened by wireless operation.
      Condition [8]
      • The luggage compartment door is closed when the engine hood is closed.
      • The engine hood is closed when the luggage compartment door is closed.
      Condition [9]
      • Any door is unlocked when all doors are locked.
      • Any door is opened.
      • Key is in the ignition key cylinder.
      • The ignition switch is turned to ACC or ON.
      • The battery is reconnected.
      • All doors are unlocked by wireless operation or key linked power door lock operation.
      Condition [10] In disarmed state 1, when the ignition switch is off, the system state is switched if the following condition is met when the key is not in the ignition key cylinder:
      • With all doors closed and the engine hood or the luggage compartment door open all doors are locked by wireless operation or key linked power door lock operation.

      In disarmed state 1, when the ignition switch is off, the engine hood or the luggage compartment door are open and all doors are locked, the system state is switched if the following condition is met when the key is not in the ignition key cylinder:
      • All doors are closed when any door is open.
      Condition [11]
      • The engine hood is opened.
      • The luggage compartment door is opened.
      • The luggage compartment door is opened by wireless operation.
  4. FORCED DOOR LOCK CONTROL 
    1. The forced door lock control prevents the vehicle from being tampered with. Immediately after a door is unlocked (armed state), all doors are forced to lock by a forced door lock signal.
      1. If the following conditions are met, the forced door lock control is operated.
        • The theft deterrent system is in the armed state.
        • Any door is unlocked.
  5. ALARM MEMORY FUNCTION 
    1. If the alarm is set off (tampering is detected) while the theft deterrent system is in the armed state, it will be stored by the alarm memory function. Whenever the theft deterrent system is canceled, the alarm memory function causes the taillights to light up for 2 seconds in order to inform the user that the alarm has been set off.
      1. Condition that cause the taillights to light up for 2 seconds:

        The theft deterrent system has entered the alarm sounding state (tampering has been detected) at least once.

  6. PANIC ALARM CONTROL 
    1. Panic alarm control makes it possible to voluntarily set off the panic alarm by pressing the panic switch on the electrical key transmitter sub-assembly.
      1. Conditions that cause panic alarm control to set off the panic alarm:

        The panic switch on the electrical key transmitter sub-assembly is pressed under the following conditions:

        • The ignition switch is off.
        • The theft deterrent system is not in the alarm sounding state.
      2. Conditions that cause the panic alarm control to shut off the alarm:

        Any of the following conditions is met during panic alarm control operation:

        • The ignition switch is turned ON.
        • The panic switch is pressed again.
        • Any of the switches on the electrical key transmitter sub-assembly (lock/unlock/luggage open) is pressed.
        • The panic alarm ends (approx. 57 seconds have elapsed).
        • The theft deterrent system switches to the alarm sounding state. Under this condition, the theft deterrent system controls the alarm rather than the panic alarm control. In order to cancel this alarm, refer to the theft deterrent system alarm sounding state cancellation procedure.
  7. SECURITY INDICATOR LIGHT OUTPUT 
    1. According to the state of the theft deterrent system, the main body ECU (multiplex network body ECU) outputs a signal to turn the security indicator light on. However, some of the actual lighting conditions of the security indicator light are different from the output signals of the main body ECU (multiplex network body ECU).
      OUTPUT

      State of Theft Deterrent System Security Indicator Light
      Output Signal from Main Body ECU (Multiplex Network Body ECU) Actual Lighting Condition
      Disarmed state (1), (2) Off
      • Off (Immobiliser system unset)
      • Blinking (Immobiliser system set)
      Arming preparation state On On
      Armed state Off Blinking
      Alarm sounding state On On
      BLINKING CYCLE

      Time Security Indicator Light
      0.125 sec. On
      1.875 sec. Off

      HINT: 

      When the immobiliser system is set, the security indicator light blinks during both the disarmed state and the armed state due to output signals from the immobiliser system.

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