Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: System Description

SYSTEM DESCRIPTION

1. OUTLINE OF THEFT DETERRENT SYSTEM

  • The theft deterrent system can be set/canceled by locking/unlocking the doors using the following operation:
    • Entry lock operation*1
    • Wireless lock operation*2
    • Key-linked lock operation
      • *1: w/ Smart Key System
      • *2: w/ Wireless Door Lock 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 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.

    HINT:

    The interior light is illuminated if the No. 1 room light assembly switch in DOOR position and the roof console box assembly switch DOOR position.

  • The theft deterrent system has the active arming mode. There are 4 states; a disarmed state, an arming preparation state, an armed 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.

(c) Armed state:

  • The theft deterrent system is operating.

(d) Alarm sounding state:

  • The alarm function is operating.

Alarm time:

Approximately 57 seconds

Alarm Methods and Time

Alarm Method

Headlights

Blinking

Taillights

Blinking

Hazard Warning Lights

Blinking

Interior Light

Illuminating

Vehicle Horns

Sounding

(approximately. 0.4-second cycles)

Security Horn

Sounding

(approximately. 0.4-second cycles)

Alarm Time

Approximately 57 seconds

2. FUNCTION OF MAIN COMPONENTS

Component

Function

Security indicator light

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).

Hood courtesy switch

Detects hood 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/ Wireless Door Lock System

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.

w/ 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:

  • With all doors and the engine hood closed, all doors are locked by wireless operation, entry operation or key linked operation.

In disarmed state 1, when the ignition switch is off, the engine hood is 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 opened.

Condition [2]

Allow approximately 30 seconds to elapse.

Condition [3]

  • All doors are unlocked by wireless operation, entry operation or key linked operation.
  • Any door is unlocked.
  • Any door is opened.
  • The ignition switch is turned to ACC or IG.
  • The battery is reconnected.

Condition [4]

  • The engine hood is opened when the engine hood 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 ignition switch is turned off, the ignition switch is turned to ON.

Condition [5]

  • The ignition switch is turned to ON and the engine is run for more than 2 seconds.
  • All doors are unlocked by wireless operation, entry operation or key linked operation.
  • Turn the ignition switch to ACC or ON within 5 seconds after the ignition switch is turned off.

Condition [6]

After approximately 57 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.
  • The ignition switch is turned to ACC or IG.
  • The battery is reconnected.
  • All doors are unlocked by wireless operation, entry operation or key linked operation.

Condition [9]

In disarmed state 1, when the ignition switch is off, the system state is switched if the following condition is met:

  • With all doors closed, and the engine hood opened, all doors are locked by wireless operation, entry operation or key linked operation.

In disarmed state 1, when the ignition switch is off, the engine hood is opened, and all doors are locked, the system state is switched if the following condition is met:

  • All doors are closed when any door is opened.

Condition [10]

The engine hood is opened

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 key cylinder:

  • With all doors, the engine hood closed, all doors are locked by wireless operation*1 or key linked operation.

In disarmed state 1, when the ignition switch is off, the engine hood is closed, and all doors are locked, the system state is switched if the following condition is met when the key is not in the key cylinder:

  • All doors are closed when any door is opened.

Condition [2]

Allow approximately 30 seconds to elapse.

Condition [3]

  • All doors are unlocked by wireless operation*1 or key linked operation.
  • Any door is unlocked.
  • Any door is opened.
  • Key is in the 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 battery is reconnected.
  • Any door is opened when all doors are closed.
  • Any door is unlocked when all doors are locked.
  • Turn the ignition switch to ON when the key is not in the key cylinder.

Condition [5]

  • The ignition switch is turned to ON and the engine is run for more than 2 seconds.
  • All doors are unlocked by wireless operation*1 or key linked operation.
  • Turn the ignition switch to ACC or ON when the key is in the key cylinder.

Condition [6]

  • After approximately 57 seconds, alarm stops and system returns to armed state.

Condition [7]

With the engine hood closed

Condition [8]

  • Any door is unlocked when all doors are locked.
  • Any door is opened.
  • Key is in the key cylinder.
  • Turn the ignition switch to ACC or ON.
  • The battery is reconnected.
  • All doors are unlocked by wireless operation or key linked power door lock operation.

Condition [9]

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 key cylinder:

  • With all doors closed, and the engine hood opened, all doors are locked by wireless operation*1 or key linked operation.

In disarmed state 1, when the ignition switch is off, the engine hood is opened, and all doors are locked, the system state is switched if the following condition is met when the key is not in the key cylinder:

  • All doors are closed when any door is opened.

Condition [10]

The engine hood is opened.

  • *1: w/ Wireless Door Lock System

4. FORCED DOOR LOCK CONTROL

(a) The forced door lock control prevents the vehicle from being tampered with. Immediately after a door is unlocked (armed starts), 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 key is not in the key cylinder.*
  • The theft deterrent system is in the armed state.
  • Any door is unlocked.
  • *: w/o Smart Key System

5. 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) at least once.

HINT:

Active arming mode: See Active Arming Mode.

6. PANIC ALARM CONTROL (w/ PANIC Switch)

HINT:

Security horn does not sound when the panic alarm control is operated.

(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 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 operation:

  • The ignition switch is turned to ON.
  • The panic switch is pressed again.
  • Any of the switches on the wireless transmitter (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 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.

7. 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

Output Signal from Main Body ECU (Multiplex Network Body ECU)

Actual Lighting Condition

Disarmed state (1), (2)

OFF

OFF (Engine immobiliser system unset)

BLINKING (Engine 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 seconds

ON

1.875 seconds

OFF

HINT:

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

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