Toyota Corolla Cross: System Description

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Theft Deterrent System / System Description

SYSTEM DESCRIPTION

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/unlock operation
- Wireless lock/unlock operation
- Key linked lock/unlock operation
- Opening and closing the doors*
  - *: 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 or the engine hood 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 and the exterior lights. At the same time, the system sounds the vehicle horns 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 switches in the map light assembly is on.
The theft deterrent system has an active arming mode. There are 5 states in this mode; a disarmed state, an arming preparation state, an armed state, a pre alarm sounding state and an alarm sounding state.

(a) Disarmed state:

The alarm function is not operating.
The theft deterrent system is not operating.

(b) Arming preparation state:

The time until the system goes into the armed state.
The theft deterrent system is not operating.

The theft deterrent system is operating.

(d) Pre alarm sounding state:

The door is unlocked with a mechanical key and a small warning sound is being emitted.

Alarm time:

Approximately 10 seconds

Pre Alarm Methods

Alarm Method	Exterior Lights Low Beams Taillights	Blinking
	Turn Signal Lights	Blinking
	Interior Lights	Illuminating
	Vehicle Horns	Sounding (Approximately 0.1-second on / 1.9 second off cycles)

(e) Alarm sounding state:

The alarm function is operating.

Alarm time:

Approximately 57 seconds

Alarm Methods

Alarm Method	Exterior Lights Low Beams Taillights	Blinking
	Turn Signal Lights	Blinking
	Interior Lights	Illuminating
	Vehicle Horns	Sounding (Approximately 0.4-second cycles)
	Security Horn Assembly	Sounding (Approximately 0.4-second cycles)

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.
Low beams	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	Comes on when attempted break-in or theft is detected.
Vehicle horns	Sound when attempted break-in or theft is detected.
Front door courtesy light switch assembly (LH/RH) Rear door courtesy light switch assembly (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).
Back door lock with courtesy light switch assembly	Detects back door status (open or closed).
Certification ECU (Smart key ECU assembly)	Receives wireless door lock/unlock signal. Receives entry door lock/unlock signal.

ACTIVE ARMING MODE (w/ Power Back Door System)

(a) Active arming mode:

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, rear door RH and back door.

Condition	Item
Condition [1]	In disarmed state 1, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood closed, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is closed and all door locks are in the lock position.
Condition [2]	In disarmed state 1, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood opened, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is opened and all door locks are in the lock position.
Condition [3]	Any of the following conditions have been met: 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 ignition switch is turned to ACC or ON. (Not using the remote start.*) The auxiliary battery is reconnected.
Condition [4]	The engine hood is opened when it was closed.
Condition [5]	Approximately 30 seconds elapse.
Condition [6]	The engine hood is closed.
Condition [7]	Any of the following conditions have been met: The ignition switch is turned to ON and the engine is running at 550 rpm for 2 seconds or more. (Not using the remote start.) All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation. The ignition switch is turned to ACC or ON within 5 seconds after the engine switch is pushed. (Not using the remote start.)
Condition [8]	All doors are unlocked by key linked power door lock operation.
Condition [9]	Any of the following conditions have been met: The engine hood is opened when it was closed. The auxiliary battery is reconnected while the engine hood or any door is open, or any door is unlocked. 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 since the engine switch is pressed, the power source mode is changed from off to ON without pressing the engine switch. (Not using the remote start.*)
Condition [10]	In pre alarm sounding state 1, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood closed, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is closed and all door locks are in the lock position.
Condition [11]	In pre alarm sounding state 2, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood opened, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is opened and all door locks are in the lock position.
Condition [12]	Approximately 10 seconds elapse.
Condition [13]	Approximately 57 seconds elapsed with the engine hood closed.
Condition [14]	Any of the following conditions have been met: The engine hood is opened when it was closed. The auxiliary battery is reconnected while the engine hood or any door is open, or any door is unlocked. 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 since the engine switch is pressed, the power source mode is changed from off to ON without pressing the engine switch. (Not using the remote start.*)
Condition [15]	Approximately 57 seconds elapsed with the engine hood opened.
Condition [16]	Any of the following conditions have been met: Any door is unlocked when all doors are locked. Any door is opened. The power back door stops or operates in the reverse direction during a closing operation, or any of the doors are opened during a power back door closing operation. The engine switch is pushed. The ignition switch is turned to ACC or ON. (Not using the remote start.*) The auxiliary battery is reconnected. All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation.
Condition [17]	When the ignition switch is off or remote start is operating* and a door other than the back door is closed, a door other than the back door is locked by the power back door reservation lock function.
Condition [18]	When the engine hood is closed, all doors are locked by the power back door reservation lock function.
Condition [19]	When the engine hood is open, all doors are locked by the power back door reservation lock function.
Condition [20]	The engine hood is closed.

*: w/ Remote Engine Start Function

ACTIVE ARMING MODE (w/o power Back Door System)

(a) Active arming mode:

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, rear door RH and back door.

Condition	Item
Condition [1]	In disarmed state 1, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood closed, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is closed and all door locks are in the lock position.
Condition [2]	In disarmed state 1, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood opened, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is opened and all door locks are in the lock position.
Condition [3]	Any of the following conditions have been met: 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 ignition switch is turned to ACC or ON. (Not using the remote start.*) The auxiliary battery is reconnected.
Condition [4]	The engine hood is opened when it was closed.
Condition [5]	Approximately 30 seconds elapse.
Condition [6]	The engine hood is closed.
Condition [7]	Any of the following conditions have been met: The ignition switch is turned to ON and the engine is running at 550 rpm for 2 seconds or more. (Not using the remote start.) All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation. The ignition switch is turned to ACC or ON within 5 seconds after the engine switch is pushed. (Not using the remote start.)
Condition [8]	All doors are unlocked by key linked power door lock operation.
Condition [9]	Any of the following conditions have been met: The engine hood is opened when it was closed. The auxiliary battery is reconnected while the engine hood or any door is open, or any door is unlocked. 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 since the engine switch is pressed, the power source mode is changed from off to ON without pressing the engine switch. (Not using the remote start.*)
Condition [10]	In pre alarm sounding state 1, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood closed, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is closed and all door locks are in the lock position.
Condition [11]	In pre alarm sounding state 2, when the ignition switch is off or the remote start is operating*, the system state is changed if any of the following conditions are met: With all doors and the engine hood opened, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. A door is closed when the engine hood is opened and all door locks are in the lock position.
Condition [12]	Approximately 10 seconds elapse.
Condition [13]	Approximately 57 seconds elapsed with the engine hood closed.
Condition [14]	Any of the following conditions have been met: The engine hood is opened when it was closed. The auxiliary battery is reconnected while the engine hood or any door is open, or any door is unlocked. 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 since the engine switch is pressed, the power source mode is changed from off to ON without pressing the engine switch. (Not using the remote start.*)
Condition [15]	Approximately 57 seconds elapsed with the engine hood opened.
Condition [16]	The engine hood is closed.

*: w/ Remote Engine Start Function

FORCED DOOR LOCK CONTROL

(a) 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.

ALARM MEMORY FUNCTION

(a) 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.

HINT:

Active arming mode: See Active Arming Mode.

PANIC ALARM CONTROL

(a) Panic alarm control makes it possible to voluntarily set off the panic alarm by pressing the panic switch on the key.

(1) Conditions that cause panic alarm control to set off the panic alarm:

The panic switch on the key 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 to ON.
The panic switch is pressed again.
Any of the switches on the key (lock/unlock) is pressed.
The panic alarm ends (approximately 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.

SECURITY INDICATOR LIGHT OUTPUT

(a) 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
State of Theft Deterrent System	Output Signal from Main Body ECU (Multiplex Network Body ECU)	Actual Lighting Condition
Disarmed state (1), (2)	Off	Off (Immobiliser function unset) Blinking (Immobiliser function set)
Arming preparation state (1), (2)	On	On
Armed state (1), (2)	Off	Blinking
Pre Alarm sounding state (1), (2)	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 function is set, the security indicator light blinks during both the disarmed state and the armed state due to output signals from the immobiliser function.

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