Toyota Venza: System Description

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Theft Deterrent System(w/ Smart Key System) / System Description

SYSTEM DESCRIPTION

1. OUTLINE OF THEFT DETERRENT SYSTEM

The theft deterrent system can be set by locking the doors using the transmitter or key, or by opening and closing the doors (for details, refer to Active Arming Mode or Passive Arming Mode).
The alarm function will be activated when someone attempts to forcibly unlock any of the doors or open any of the doors, engine hood and back door while the system is in the armed state.
In the alarm sounding state, the system illuminates the interior light and blinks the hazard warning lights, the headlights and taillights. At the same time, the system sounds the vehicle horns and security horn to deter break-in and theft as well as to warn people around the vehicle.
The alarm can be canceled by unlocking the doors using the transmitter or key.
There are two arming modes for this system: active arming mode and passive arming mode. When the active arming mode has been set, the theft deterrent system will be set after the user locks the doors via the transmitter or key. When the passive arming mode has been set, the theft deterrent system will be set after the key is removed and the driver door is closed.

(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) Alarm sounding state:

The alarm function is operating.

Alarm time:

Approx. 60 seconds

Alarm Methods and Time

Alarm Method	Headlights	Blinking
	Taillights	Blinking
	Hazard Warning Lights	Blinking
	Interior Light	Illuminating
	Vehicle Horns	Sounding (approx. 0.8 second cycles)
	Security Horn	Sounding
Alarm Time	Approx. 60 seconds

HINT:

If any of the doors are unlocked when the key is not in the actuation area during the armed state, a forced door lock signal will be output (refer to Forced Door Lock Control).

2. FUNCTION OF MAIN COMPONENTS

Component	Function
Security indicator	Informs driver of theft deterrent system status.
Security horn	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.
Hazard warning lights	Blink when attempted break-in or theft is detected.
Interior light	Comes on when attempted break-in or theft is detected.
Vehicle horns	Sound when attempted break-in or theft is detected.
Door courtesy light switch	Detects door status (open or closed).
Door unlock detection switch	Detects door status (locked or unlocked).
Security courtesy switch	Detects engine hood status (open or closed).
Back door courtesy switch	Detects back door status (open or closed).

3. ACTIVE ARMING MODE

HINT:

Active arming mode starts the alarm control immediately after the doors are locked.

(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 terms "all doors" and "any door" used in the following table include the back door.

Condition	Item
Condition [1]	With all doors and engine hood closed, all doors are locked by key operation. With all doors and engine hood closed, all doors are locked by wireless operation or smart key system. With all door lock position switches locked and engine hood closed, all doors are closed then.
Condition [2]	Allow approx. 30 seconds to elapse.
Condition [3]	All doors are unlocked by wireless operation or smart key system. All doors are unlocked by key operation. Any door is unlocked. Any door is opened. The battery is reconnected. Turn the engine switch from off to on (IG).
Condition [4]	The engine hood is opened. The battery is reconnected. Any door is opened when all doors are closed. Any door is unlocked when all doors are locked. Turn the engine switch on (IG) when the key is not in the actuation area.
Condition [5]	All doors are unlocked by wireless operation or smart key system. All doors are unlocked by key operation. Turn the engine switch on (ACC or IG) within 5 seconds after turning it off. Turn the engine switch on (IG) and the engine is running for more than 2 seconds.
Condition [6]	After approx. 60 seconds, alarm stops and system returns to armed state.
Condition [7]	The engine hood is closed.
Condition [8]	Any door is unlocked when all doors are locked. Any door is opened. Turn the engine switch on (ACC or IG). The battery is reconnected. All doors are unlocked by wireless operation or smart key system. All doors are unlocked by key operation.
Condition [9]	With all doors closed and engine hood opened, all doors are locked by key operation. With all doors closed and engine hood opened, all doors are locked by wireless operation or smart key system. With all door lock position switches locked and engine hood opened, all doors are closed then.
Condition [10]	The engine hood is opened.

4. PASSIVE ARMING MODE

HINT:

Passive arming mode starts the alarm control after the key is removed from the actuation area and the doors are closed.
Passive arming mode can be switched ON/OFF using the Techstream.
The alarm is initially set (when shipped from the factory) to active arming mode (not passive arming mode).
During passive arming mode, the theft deterrent system goes into the armed state even if the doors are not locked.
Detecting that the doors are unlocked does not set off the alarm during passive arming mode.
A forced door lock signal is not output during passive arming mode (refer to Forced Door Lock Control).
Although the theft deterrent system detects that the doors are opened during passive arming mode, the alarm will not go off immediately because an entry delay time is set.
If condition [1] of active arming mode is met during passive arming mode, the theft deterrent system will switch to active arming mode.

(a) Passive arming mode:

This system operates as described in the diagram below when one of the items for each condition is met.

HINT:

The terms "all doors" and "any door" used in the following table include the back door.

Condition	Item
Condition [1]	When the key is not in the actuation area, any door is opened and then the engine switch is turned off. When the key is not in the actuation area, the engine switch is turned off and then any door is opened.
Condition [2]	With engine hood closed, any door is closed. With all doors closed, the engine hood is closed.
Condition [3]	All doors are unlocked by wireless operation or smart key system. All doors are unlocked by key operation. The battery is reconnected. The engine switch is turned on (IG or ACC).
Condition [4]	Approx. 30 seconds elapse after condition [1] is met.
Condition [5]	Any door is opened. The engine hood is opened.
Condition [6]	Any door is opened and the entry delay time* elapse. The engine hood is opened. The battery is reconnected. When 5 seconds or more have elapsed after the engine switch is turned off, the engine switch is turned on (IG).
Condition [7]	All doors are unlocked by wireless operation or smart key system. All doors are unlocked by key operation. The engine switch is turned on (IG) and the engine is running for more than 2 seconds. The engine switch is turned on (IG) within 5 seconds after it is turned off.
Condition [8]	Approx. 60 seconds elapse. (The alarm stops and the system returns to the armed state.)

HINT:

*: When any door is opened while all doors are closed during passive arming mode, the entry delay time starts. If the switch condition (armed state → disarmed state (1) or (2)) is met during the entry delay time, the theft deterrent system will return to disarmed state (1) or (2). However, if the switch condition for disarmed state (1) or (2) is not met, the theft deterrent system will recognize it as a theft and set off the alarm. Entry delay time of 0, 14 or 30 seconds can be selected by the customizing function.

5. FORCED DOOR LOCK CONTROL

(a) The forced door lock control prevents the vehicle from being tampered with. Immediately after a door is unlocked (alarm starts), all doors are forced to lock by a forced door lock signal.

(1) Conditions that force the doors to lock:

The key is not in the actuation area and both of the following conditions are met:

The theft deterrent system is in the alarm sounding state of active arming mode.
Any door is unlocked.

6. ALARM MEMORY FUNCTION

(a) If the alarm is set off (tampering is detected) while the theft deterrent system is armed, 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 you that the alarm has been set off.

(1) Conditions that cause the taillights to light up for 2 seconds:

The theft deterrent system has entered the alarm sounding state (tampering has been detected) even once and either of the following conditions has been met:

Switched to the disarmed state 1 from the armed state during active arming mode.
Switched to the disarmed state 1 from the armed state during passive arming mode.

HINT:

Active arming mode: See Active Arming Mode.

Passive arming mode: See Passive Arming Mode.

7. PANIC ALARM CONTROL

(a) The panic alarm control makes it possible to voluntarily set off the panic alarm by pressing the PANIC switch on the wireless transmitter.

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

The PANIC switch on the wireless transmitter is pressed under the following conditions:

The engine switch is off.
The theft deterrent system is not in the alarm sounding state. (This condition is common to both active arming mode and passive arming mode.)

(2) Conditions that cause the panic alarm control to shut off the alarm:

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

The engine switch is turned off.
The PANIC switch is pressed again.
Any of the switches on the wireless transmitter (LOCK/UNLOCK/POWER BACK DOOR) is pressed.
The panic alarm ends (approx. 60 seconds have elapsed).
The theft deterrent system switches to the alarm sounding state. Under this condition, the theft deterrent system is controlling 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. (This condition is common to both active arming mode and passive arming mode.)

HINT:

Active arming mode: See Active Arming Mode.
Passive arming mode: See Passive Arming Mode.

8. SECURITY INDICATOR OUTPUT

(a) The main body ECU (driver side junction block assembly) outputs a signal to come on the security indicator, according to the state of the theft deterrent system. However, some of the actual lighting conditions of the security indicator are different from the output signals of the main body ECU (driver side junction block assembly).

Output

State of Theft Deterrent System	Security Indicator
State of Theft Deterrent System	Output Signal from Main Body ECU (Driver Side Junction Block Assembly)	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
0.2 sec.	ON
1.8 sec.	OFF

HINT:

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

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use this procedure to troubleshoot the theft deterrent system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHO ...

Customize Parameters

CUSTOMIZE PARAMETERS HINT: The following items can be customized. NOTICE: After confirming whether the items requested by the customer are applicable or not for customization, perform ...

Other materials about Toyota Venza:

Installation
INSTALLATION PROCEDURE 1. INSTALL POWER BACK DOOR UNIT ASSEMBLY (a) Install the power back door unit with the 4 bolts. Torque: 13 N·m {133 kgf·cm, 10 ft·lbf} (b) Connect the connector. 2. ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the tab ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON and turn the Techstream on. (c) Enter the following menus: Body Electrical / Trouble Codes. (d) Check for DTCs. 2. CLEAR DTC (a) Connect the Techst ...